JP2018189431A - Full water test equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive water filling test device for easily performing a water filling test by allowing almost no test water to overflow with the use of a stop balloon.SOLUTION: A water filling test device includes: a lid member 1 that has an aperture being the same as that of an opening/closing lid of a cleaning port arranged in a drain vertical tube and also has sealing property; and two through-holes 2, 3 penetrating the lid member 1 from an inside to an outside. The one through-hole 2 constitutes an air passage 4 for allowing air to circulate from a pneumatic source 9 to an expandable stop balloon 5 to be inserted to the drain vertical tube located under the cleaning port together with an air hose 8. The other through-hole 3 constitutes a drain passage 7 with a drain hose 10, where a tip end 23 is extended to a part close to an upper surface 18 of the stop balloon 5 inserted to the drain vertical tube and also a rear end 24 is extended to a position lower than the upper surface 18 of the stop balloon 5 on an outer side of the drain vertical tube.SELECTED DRAWING: Figure 5

Description

    The present invention relates to a full water test apparatus used for checking the presence or absence of water leakage in a drainage pipe system constructed in a building such as a multi-story house.

    Conventionally, as a method of testing for leaks in drainage vertical pipes constructed in buildings, the drainage vertical pipe system is filled with water, and after a certain period of time, the water level is checked to check for water leakage. A full water test is known. In order to achieve this full water condition, a cast iron full water joint is provided in the middle of the drainage vertical pipe, or a rubber stop balloon that expands and contracts by controlling the air pressure from the cleaning port normally provided in the middle of the drainage vertical pipe Is introduced above the vertical pipe to block the drain vertical pipe.

To explain this further, as shown in FIG. 7 of Patent Document 1, the fully-fitted joint brings in a valve body separately prepared from the joint side opening and closing to the inside of the joint during the test, operates the valve body, The inside of the pipe is closed, and after the closing, water is poured into the pipe above the valve body and the test is carried out. This water-filled joint has a relatively complicated structure and is made of cast metal. Therefore, it has the disadvantage that it is expensive, very heavy, and has poor piping workability. Was unsuitable.
As a simple full water test method free from the drawbacks of such a full water joint, a rubber stop balloon having the above structure is introduced from the cleaning port provided in the drainage vertical pipe to the upper side of the drainage vertical pipe, and the pressure in the balloon is A full water test is also performed by sending air into the vertical pipe to close the drain vertical pipe, and pouring water into the pipe above the balloon.

Japanese Patent No. 5869710

In general, the full water test is carried out in a state where only the piping work of the drainage piping system has been completed, that is, in a state where living equipment such as a bathtub or a toilet is not connected. Piping work is carried out sequentially from the lower floor to the upper floor, and as shown in FIG. 1, the drainage vertical pipe c and the side branch pipe d are connected to the collective pipe joint b provided through the floor slab a of the building. Although connected, the full water test is in an open state in which a device such as a bathtub is not connected to the end of the side branch pipe d, and the drainage piping system of the entire building is not completed, for example, the piping is completed up to the fifth floor Done in In a full water test using a stop balloon, a stop balloon h connected to an air pressure source k via an air hose g as shown in FIG. 2 is used. This stop balloon h removes the circular opening / closing lid f of the cleaning port e which is usually provided in order to introduce a cleaning tool for cleaning the inside of the drainage vertical tube c, and as shown in FIG. 3 and FIG. It introduce | transduces into the drainage vertical pipe c of the upper direction from e, and then injects the test water i into the vertical pipe above the balloon, and measures the presence or absence of the fall of the water surface. When the air inside the balloon h is removed immediately after the test is finished, the test water accumulated above the balloon overflows from the open cleaning end and the open end of the lower branch pipe d. Since the lower floor will be submerged in water and inconvenience will be caused to the construction work, it is necessary to extract the test water from the drainage pipe, and then to drain the air. Had to be prepared separately. Further, it is difficult for the drainage pump to sufficiently drain the test water above the stop balloon h, so that a considerable amount of test water remains and overflows from the cleaning port e to the outside of the drainage vertical pipe. The cleaning port e has a simple structure in which the inside is simply provided with an opening / closing lid f for inserting the cleaning tool into the tube, and is made of synthetic resin and lightweight.
SUMMARY OF THE INVENTION An object of the present invention is to provide an inexpensive full water test apparatus that can easily perform a full water test using a stop balloon introduced from a cleaning port without almost overflowing the test water to the outside of the drainage vertical pipe. Is.

  In the present invention, in order to solve the above-mentioned problems, a lid member having the same diameter and sealing property as an opening / closing lid for closing a cleaning port provided in a drainage vertical pipe of a building, and two pieces penetrating the lid member in and out. One of the through holes constitutes an air passage through which air is circulated from an external air pressure source to an inflatable / stoppable stop balloon inserted into the drainage vertical pipe below the cleaning port together with the air hose. The other through-hole extends with the drainage hose to the vicinity of the upper surface of the stop balloon inserted into the drainage vertical pipe, and the rear end extends to the position below the upper surface of the stopballoon outside the drainage vertical pipe Configured. The stop balloon inserted into the drainage vertical pipe below the cleaning port is connected to one end of the one through hole through an air hose, and the pneumatic source is connected to the other end of the through hole through an air hose. A short drainage hose extending to the vicinity of the upper surface of the stop balloon inserted in the drainage vertical pipe is connected to one end of the other through-hole and the other end of the through-hole is connected to the outside of the drainage vertical pipe It is preferable that a long drain hose extending to a position below the upper surface of the stop balloon is connected. Further, the air passage may be constituted by a communication type air hose inserted through one through hole, and the drainage passage may be constituted by a communication type drain hose inserted through the other through hole. The longitudinal drain hose is preferably connected to the other end of the through hole via a water stop valve.

    After removing the opening and closing cover of the synthetic resin cleaning port provided in the middle of the drainage vertical pipe, after inserting the stop balloon and the drainage hose that constitutes the drainage passage from the cleaning port into the drainage vertical pipe below this The cleaning port is closed with a lid member, and the drainage passage is blocked by a water stop valve. Next, the inside of the drainage vertical pipe is closed by inflating by sending pressurized air from the air pressure source to the stop balloon through the air passage. Then, test water is poured until the inside of the drainage vertical pipe above the balloon where the water leakage test is scheduled and the side branch pipe connected to the balloon is full, and after maintaining the water pressure of 30 kPa for 60 minutes for a predetermined time, the water level in the pipe decreases. Measure the presence or absence of water leakage due to poor connection of pipe connections.

When the full water test is completed, the water stop valve is opened and the test water in the vertical drainage pipe is drained from the drainage passage into the container. The tip of the drainage passage is located close to the top surface of the stop balloon, and the rear end of the drainage passage is located below the top surface of the stop balloon outside the drainage vertical pipe. Not only the test water above the cleaning port but also the test water below the cleaning port can be automatically drained, and it is not particularly necessary to prepare a drain pump. Then, the stop balloon is evacuated and reduced, and the lid member is removed from the cleaning port. At this time, almost no test water remains in the drainage vertical pipe, so the water filling test can be performed safely without overflowing from the cleaning port. Since the device configuration is a simple configuration in which a stop balloon and an air pressure source are connected to the lid member via an air hose and a drain hose, the device can be manufactured at low cost. In addition, if the air passage is configured with a continuous air hose inserted through the through-hole and the drainage passage is configured with a continuous drainage hose inserted through the through-hole, the configuration of these passages is simplified and manufactured at a lower cost. it can.

Explanatory drawing of the full water test situation Illustration of a conventional stop balloon Cutting side view of a general drainage vertical pipe with a cleaning port Illustration of conventional full water test Partially cut side view of an embodiment of the present invention Sectional plan view taken along line 6-6 in FIG. Explanatory drawing which shows the use start state of the full water test apparatus of this invention Explanatory drawing which shows the attachment state of the full water test apparatus of this invention Explanatory drawing of the state which inflated the stop balloon in the state of FIG. Explanatory drawing of the full water test state of the device of the present invention Partially cut side view of another embodiment of the present invention

    The embodiment of the present invention will be described with reference to the drawings. In FIGS. 5 and 6, reference numeral 1 denotes the opening and closing lid of the cleaning port provided in the middle of the drainage vertical pipe and can be attached in a sealed state to the cleaning port. A cover member made of a synthetic resin is shown, and the cover member 1 is formed with two through holes 2 and 3 penetrating inward and outward. One through hole 2 constitutes an air passage 4 together with an air hose 8, and the other through hole 3 constitutes a drainage passage 7 together with a drain hose 10. For example, as shown in FIG. 8, the air passage 4 is connected to the rubber-made inflatable stop balloon 5 (commercially available) inserted into the drainage vertical pipe 16 below the cleaning port 17. Pressure air from an air pressure source 9 consisting of an external hand-pushed air pump is introduced. Further, the drainage passage 7 has a distal end 23 extending to the vicinity of the upper surface 18 of the stop balloon 5 inserted into the drainage vertical pipe 16 and a rear end 24 thereof from the upper surface 18 of the stop balloon 5 outside the drainage vertical pipe 16. Is also configured to extend to a lower position. In the example of FIG. 5, the drainage hose 10 is disposed below the upper surface of the stop balloon 5 from the through hole 3 to the vicinity of the upper surface 18 of the stop balloon 5 and the short drainage hose 19 extending from the through hole 3 through the water stop valve 11. A long drainage hose 13 extends to a drainage container 12 such as a plastic tank provided at a position. Reference numeral 14 is an exhaust valve, and 15 is a seal ring for sealing the lid member 1 to the cleaning port. For the drainage vertical pipe 16 and the cleaning port 17, a fireproof two-layer structure in which an inner pipe 20 made of PVC is covered with an outer pipe 21 of fiber-mixed mortar is used.

    5 is used as shown in FIG. 7 to FIG. 10. The open / close lid of the cleaning port 17 provided in the middle of the drainage vertical pipe 16 is removed and the drainage from the cleaning port 17 is performed. The stop balloon 5 and the drainage hose 10 in a reduced state are inserted below the vertical tube 16, and the lid member 1 is turned and sealed to seal the cleaning port 17 (FIG. 8). The water stop valve 11 is stopped, air is fed from the pneumatic source 9 until the stop balloon 5 is inflated to block the inside of the drainage vertical pipe 16 (FIG. 9), and the drainage vertical pipe 16 on the full water test floor above the stop balloon 5. And the inside of the lateral branch pipe is filled with the test water 22 (FIG. 10). Then, after a predetermined time has passed, the presence or absence of water leakage is measured by looking at the water surface in the pipe.

As shown in FIG. 5, the end of the longitudinal drain hose 13 is disposed below the upper surface 18 of the stop balloon 5, so that the water stop valve 11 is opened after the full water test to discharge the test water to the drainage container 12. Then, most of the test water above the stop balloon 5 can be discharged to the drainage container 12 without using a drain pump due to the siphon phenomenon, and when the stop balloon 5 is reduced and taken out from the cleaning port 17, the test water is drained vertically. There is no overflowing to the outside of the 16.

As shown in FIG. 11, the air hose 8 constituting the air passage 4 can also be constituted by a single communication type air hose 25 passing through the through hole 2, and a long drainage hose constituting the drainage passage 7. 13 and the short drainage hose 19 can be configured by a single continuous drainage hose 26 that passes through the through-hole 3. In this case, since there is no need for connecting parts such as nipples, there is an advantage that manufacturing is easy and inexpensive. In addition, a sealing material 27 for preventing water leakage is provided around the hoses 25 and 26 as necessary.

DESCRIPTION OF SYMBOLS 1 Lid member, 2 Through-hole, 3 Through-hole, 4 Air passage, 5 Stop balloon, 7 Drain passage, 8 Air hose, 9 Air pressure source, 10 Drain hose, 11 Water stop valve, 13 Long drain hose, 16 Drain vertical Pipe, 17 cleaning port, 18 upper surface, 19 short drain hose, 23 tip, 24 rear end, 25 communication air hose, 26 communication drain hose,

Claims (4)

A lid member having the same diameter as the open / close lid provided in the vertical drainage pipe of the building and having a sealing property, and two through holes penetrating the lid member inward and outward; The through-hole of the air pipe and the air hose constitute an air passage that allows air to flow from an external pneumatic pressure source to the inflatable stop balloon inserted into the drainage vertical pipe below the cleaning port. A full water test characterized in that the front end extends to the vicinity of the upper surface of the stop balloon inserted into the drainage vertical pipe, and the rear end constitutes a drainage passage extending to a position below the upper surface of the stop balloon outside the drainage vertical pipe apparatus. The stop balloon inserted into the drainage vertical pipe below the cleaning port is connected to one end of the one through hole via an air hose, and the air pressure source is connected to the other end of the through hole via an air hose. A short drainage hose extending to the vicinity of the upper surface of the stop balloon inserted into the drainage vertical pipe is connected to one end of the other through-hole and the other end of the through-hole is connected to the outside of the drainage vertical pipe. The full water test apparatus according to claim 1, wherein a long drainage hose extending to a position below the upper surface of the stop balloon is connected.     The air passage is constituted by a communication type air hose inserted through one through hole, and the drainage passage is constituted by a communication type drainage hose inserted through the other through hole. Full water test device as described. The full water test apparatus according to claim 2, wherein the longitudinal drainage hose is connected to the other end of the through hole via a water stop valve.

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