JP3492674B1 - Piping method of water storage tank and tool used therefor - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To be able to connect a pipe to a water storage tank in which water is stored. SOLUTION: A flange 30 is adhered to an outer surface of a water storage tank 2, and after the flange 30 is adhered with a predetermined strength, a flow path in a horizontal direction is connected to the flange 30 through a T-shaped connection pipe 36. And a vertical valve 39 communicating vertically with the flow path. Open the horizontal valve 38 and insert the drilling tool 40. With the vertical valve 39 opened, a circular hole is made in the wall surface of the water tank 2 with the tool 40, and the fine chips on the wall surface are discharged downward from the vertical valve 39 together with the discharged water. Thereafter, the vertical valve 39 is closed, the tool 40 is pulled out to a position closer to the outlet than the horizontal valve 38, and the horizontal valve valve 38 is closed. Thereafter, the tool 40 is removed, and the pipe 48 is connected to the valve 38 or the valve 39.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe construction method for connecting a pipe from the outside to a water storage tank having water stored therein, and a tool used therefor.

[0002]

2. Description of the Related Art A water pipe is connected to a water tank to send out water, or water is supplied to the water tank. The purpose of connecting pipes to the water tank is not limited to such water supply and drainage, but for connecting a water treatment device that takes out water from the water tank, performs sterilization treatment, water quality improvement, etc., and then returns it to the water tank again. There is also a pipe connection.

As such a water treatment apparatus, the present inventors have developed a new type water treatment apparatus and submitted it separately (Japanese Patent Application No. 2002-223495). The water treatment device takes in water from a water storage tank and performs electric field treatment to perform sterilization treatment to improve water quality. There are various other water treatment devices, and all of them are common in that they take water from the water storage tank, treat it to improve the water quality, and return it to the water storage tank again. It is also common in that it is connected to the tank.

In the construction for connecting the pipe to the water tank,
When the water tank is empty, it suffices to make a hole in the wall surface, fix the pipe mounting flange for connecting the pipe from the outside, and connect the pipe to it, and there is no technical problem. However, if the pipe is connected to the water storage tank in which water is stored without draining water, the situation changes completely, and the pipe connection construction is not performed under such a condition.

[0005]

There is a great demand for connecting some kind of water treatment device to an existing water storage tank or adding piping. Generally, pipe connection work is performed with the water tank empty. In that case, during the construction period, the supply of water to the customers who are supplied with water from the water storage tank is naturally stopped and the water supply is cut off. However, if the water tank is tap water that is used on a daily basis, water cutoff must be avoided as much as possible, and it is required to connect pipes with water stored in the water tank.

Therefore, the present invention provides a construction method for connecting an auxiliary device such as a water treatment device or another pipe to a water storage tank in which water is stored,
The object is to provide a tool used for that purpose.

[0007]

The pipe construction method of the present invention is a method of connecting a pipe from the outside to a water storage tank having water stored therein, including the following steps. (A) A step of fixing a pipe mounting flange at a position lower than the water level on the outer wall surface of the water storage tank in which water is stored inside, (B) Flowing horizontally through a connecting pipe branched to the flange. Attaching a horizontal valve communicating with the passage and a vertical valve communicating with the passage in the vertical direction (C), then inserting a drilling tool having a blade for making a circular hole at the tip through the horizontal valve, D) With the vertical valve opened, a hole is made in the outer wall surface of the water storage tank by the drilling tool, and fine chips generated during the drilling are discharged from the vertical valve together with the water in the water tank. And (E) a step of removing the drilling tool and connecting a pipe to either of the valves.

According to the pipe construction method of the present invention, when a hole is made in the outer wall surface of the water tank, the chips produced during the hole are discharged from the vertical valve together with the water in the water tank. Scrap will not enter the water tank.

Further, when a hole is opened on the outer wall surface of the water tank, two valves have already been attached to the outside of the hole. Therefore, if the drilling tool is removed and the two valves are closed, the water tank is removed from the water tank. The drainage of water will stop. After that, the pipe connection is completed by connecting the pipe to either of the valves. During this pipe construction period, it is not necessary to stop the supply of water from the water tank to the customer, and the pipe connection can be made in the state of uninterrupted water.

In step (E), for example, after the chips are discharged from the vertical valve, the vertical valve is closed,
It is possible to connect the pipes after removing the drilling tool and closing the horizontal valve.

An example of the step of fixing the flange in the step (A) is a step of using an adhesive. In that case, it is preferable to fix the flange to the outer wall surface of the water storage tank by using an auxiliary mechanism until the adhesive has a predetermined adhesive strength.

There are two types of water tanks, a single plate type whose wall surface is made of one plate material and a composite plate type whose wall surface is made of a plurality of plate materials. In the case of the composite plate type, in order to prevent water from entering between the laminated plates, the outer wall surface to which the flange is fixed in the step (A) is the outer wall surface of the plate material that comes into contact with water at the innermost side.

The pipe to be connected is not particularly limited, but one example thereof is a pipe connected to a water treatment device that takes in water from the water storage tank, processes it, and returns it to the water storage tank again.
In that case, two pipes, a pipe for supplying water to the water treatment device and a pipe for returning water from the water treatment device, are connected to the water storage tank.

The position at which the two pipes connected to the water treatment device are connected is preferably the positions farthest from each other with respect to the position on the plane. This makes it possible to treat a wide range of water in the water tank.

Further, among the connection positions of the two pipes in the water storage tank, the connection position of the pipe for returning water from the water treatment device is near the supply outlet for supplying water from the water storage tank to the water supply port of the consumer. It is preferable to arrange them. This allows
Treated water can be easily supplied to the water inlet of the consumer.

The tool of the present invention is a drilling tool used in the pipe construction method according to the present invention, and includes a cap that can be fixed to one end of a pipe, a shaft that is rotatably passed through the center of the cap, and a tip of the shaft. And a blade capable of making a circular hole in a plate-shaped object by rotating its shaft. By using this tool, the pipe construction method according to the present invention can be easily carried out.

Since the pipe construction method according to the present invention is performed on the existing water storage tank, it may be difficult to operate the tool because it is narrow depending on the grounding location of the water storage tank. Therefore, if a flexible shaft is used as the shaft of the tool, piping work in such a narrow space becomes easy.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 schematically shows a water tank to which a pipe connection is applied according to the present invention and a water treatment device as an example. The water tank 2 is an existing water tank installed on the roof of a building such as an office building or a condominium. Water is supplied from a supply outlet 4 provided at a lower portion of the water storage tank 2 to a plurality of water supply ports in the building. Water is supplied from the pumping pipe to the upper part of the water storage tank 2 through the valve 6, and the water level gauge 8 adjusts the amount of the water 3 in the water storage tank 2 to be always constant. In this embodiment, a facility such as the water treatment device 10 is connected by piping while water is stored in the water storage tank 2.

The water treatment device 10 is an example, but the water treatment device by the above electric field treatment, which the present inventors have separately proposed, is given as an example. In this water treatment device 10, the water storage tank 2
The water is taken in by the pump 14 from the valve via the valve 12. The taken-in water is sent to the electrolysis unit 16 equipped with an electrode and electrolyzed. In this electrolysis, chlorine ions in water become hypochlorite ions and chlorine, and active oxygen is also generated by electrolysis of water. Water is sterilized by the sterilizing action of such hypochlorite ions, chlorine, and active oxygen. Reference numeral 18 denotes a mineral replenishment unit, which is filled with granular barley stone, coral sand, or the like, and elutes and replenishes minerals in water. The treated water that has passed through the mineral supply unit 18 is returned to the water tank 2 from the valve 22 through the filter 20. The filter 20 also has a gas venting function, and is for releasing gas generated by electrolysis or for preventing fine particles from being generated in the mineral supply unit 18 from entering the water tank 2. is there.

Reference numeral 19 denotes a residual chlorine concentration sensor, which is arranged in parallel with the electrolysis unit 16 and has the electrolysis unit 1
The residual chlorine concentration of water before being supplied to 6 is detected. Two
Reference numeral 4 denotes an operation panel for controlling the operation of the water treatment device, which drives the pump 14 to detect the residual chlorine concentration of water taken into the water treatment device by the residual chlorine concentration sensor 19 continuously or periodically. However, when the detected residual chlorine concentration is higher than a predetermined value, the electrolysis treatment of water by the electrolysis unit 16 is stopped, and when the residual chlorine concentration becomes equal to or lower than the predetermined value, the electrolysis treatment of water by the electrolysis unit 16 is started. It controls the operation.

In the present invention, this water treatment device 10 is used as a water tank 2.
Connect the pipes at the two positions. Either of the two positions may be on the top or at the same height, but water pressure is applied to both positions and chips are discharged together with water when a hole is drilled from the outside. The position. Therefore, it is preferable to arrange the two connection positions at a position lower than half the height of the water storage tank 2.

The position connecting the two pipes leading to the water treatment apparatus 10 is most distant from each other when viewed from the top of the water tank 2
It is located in the position. Thereby, a wide range of water in the water storage tank 2 can be treated.

Further, among the connection positions of the two pipes in the water storage tank 2, the connection position of the pipe for returning the water from the water treatment device 10 via the valve 22 supplies the water from the water storage tank 2 to the water supply port of the consumer. It is arranged near the supply outlet 4. As a result, the water immediately after being treated can be easily supplied to the water supply port of the consumer.

The water treatment device 10 connected to the water storage tank 2 is not limited to this example, and all water treatment devices are applicable.
It can also be applied as a construction work in which the drainage pipe is simply connected to the water storage tank 2, and the number of pipe connection points may be any number.

Next, an embodiment of a construction method for connecting pipes in a state where water is stored in the water storage tank 2 will be concretely described with reference to FIGS. 2 and 3. (A) The flange 30 is bonded to the outer surface of the water storage tank 2. Although the wall surface of the water storage tank 2 is made of various materials, one example is FRP (glass fiber reinforced plastic). Water 3 is stored in the water storage tank 2.

The flange 30 is for connecting a pipe, is made of metal, and has a cylindrical base end portion that spreads like a brim, and a screw is formed on the outer peripheral surface of the cylindrical portion. There is.

The flange 30 is bonded to the outer wall surface of the water storage tank 2 with an adhesive. Although various adhesives can be used as the adhesive between the outer wall surface of the water tank 2 and the flange 30,
For example, Quick Mender (registered trademark, manufactured by Konishi Co., Ltd.) can be mentioned. After the flange 30 is fixed to the outer surface of the water tank 2 with an adhesive, the flange 30 is prevented from coming off by an appropriate reinforcing mechanism 32 until the adhesive is cured and a predetermined adhesive strength is obtained. Is preferably fixed while being pressed against the water tank 2.

Before the flange 30 is bonded to the outer wall surface of the water tank 2, it is preferable to clean the surface of the outer wall surface of the water tank 2 and to roughen it with a sander or the like in order to increase the adhesive strength. .

In order to further secure the fixation of the flange 30, it is preferable to reinforce the adhesion from above the flange portion of the flange 30. As an example thereof, for example, fixing the glass fiber mat 30 and the adhesive from above the flange portion of the flange 30 can be mentioned.

(B) After the flange 30 is adhered with a predetermined strength, it flows in a vertical direction with a horizontal valve 38, which has a flow passage in the horizontal direction, through a connecting pipe 36 branched into a T shape on the flange 30. Install a vertical valve 39 that connects to the passage. The types of the valves 38 and 39 are not particularly limited, and various mechanisms such as a ball valve can be used. The horizontal valve 38 needs to have a shape in which a passage runs in a straight line in order to insert a drilling tool later.

In this state, it is preferable to inspect the adhesive strength of the flange 30 and the valve connecting portion to confirm that the predetermined strength is maintained. As a test for such confirmation, a water pressure gauge is connected to one valve, the other valve is closed, and the water pressure gauge is used to set a predetermined water pressure, for example, 0.7.
It is left for 1 hour while applying 5 MPa, and if the water pressure does not decrease, it is determined that the connection is good.

(C) Open the horizontal valve 38 and insert the drilling tool 40. The drilling tool 40 is a tool which will be described later with reference to FIG.
Insert it until it reaches the wall surface of the water tank 2. A blade 42 for making a circular hole in a plate-like member is attached to the tip of the tool 40, and the blade 42 contacts the wall surface of the water tank 2. The shaft of the tool 40 is rotatably passed through a cap 44, and the cap 44 is fixed to the tip of a pipe 46 connected to the valve 38. A screw is formed on the inside of the cap 44, and the cap 44 can be fixed by being screwed into the screw at the opening end of the pipe 46.

After that, with the vertical valve 39 opened, the tool 40 is manually or attached to a drill and rotated to make a circular hole in the wall surface of the water tank 2 with the blade 42.

When a hole is opened in the wall surface of the water storage tank 2, the water 3 in the water storage tank 2 is discharged by hydraulic pressure through the hole. When making a hole in the wall surface of the water tank 2 with the blade 42, a circular chip corresponding to the shape of the hole formed with the fine chip on the wall surface is generated, and the fine chip is discharged vertically along with the discharged water. It is discharged downward through the valve 39. Round chips are blades 4
It stays in a state of being pressed into the inside of 2.

Then, when all the fine chips have been discharged, the vertical valve 39 is closed and the tool 40 is pulled out to a position in the outlet direction (rightward in the figure) with respect to the horizontal valve 38. Then, the horizontal valve 38 is closed. In this state, both valves 38 and 39 are closed, and the discharge of water from the water storage tank 2 is stopped. Then, the cap 44 is removed and the tool 40 is removed.

(D) A pipe 48 is connected to either the horizontal valve 38 or the vertical valve 39. This piping 48
Is a pipe connected to the water treatment device 10. Since the pipes are connected to the water tank 2 at two positions in FIG.
And the steps described with reference to FIG. 3 will be performed for each pipe.

FIG. 4 shows a drilling tool 40 used in this embodiment.
It shows an example of. A blade 42 is attached to the tip of a shaft 41 of the tool 40. The blade 42 has a cylindrical shape, and the blade is provided at the opening at the tip thereof.

At the center of the cylinder provided with the blade 42,
The blade 43 of the positioning drill may be provided so as to project forward from the blade 42. The blade 43 of the drill is convenient for holding the chips corresponding to the circular holes formed in the wall surface of the water storage tank 2 and taking them out together with this tool.

The cap 44 has a hole through which the shaft 41 passes, and a screw 47 for screwing and fixing to the pipe is provided inside the hole. In order to minimize the gap between the cap 44 and the shaft 41 and the gap between the cap 44 and the pipe fixing the cap 44 to prevent water from being discharged from the cap 44 to the outside, the packing 50 is provided. It is fitted on the shaft 41. The packing 50 can move along the shaft 41, and enters the inside of the cap 44 so as to intervene between the packing 50 and a pipe to which the cap 44 is screwed and fixed.

In order to rotate this tool 40 manually,
A hole through which the handle 52 is inserted is opened at the tip. As the tool 40, in addition to such a manually rotating tool, a tool having a tip which is mounted on a drill and electrically driven may be a prism.

Such piping connection work may not have sufficient space depending on the installation location of the water tank. In order to cope with such a situation, the shaft 41 of the tool can be made bendable and flexible. In that case, the drilling work can be performed even in a narrow space.

As the structure of the wall surface of the water tank, in addition to the single plate type consisting of one plate, two or more plates are laminated with a heat insulating material such as urethane foam interposed therebetween. Some are composite plates that have been made.

As shown in FIG. 5, when the structure of the wall surface of the water storage tank is the composite plate, the construction is performed by making a hole in the innermost wall surface which is in contact with the stored water. As a construction method therefor, a hole of an appropriate size is made in the outer wall surface 2b, the heat insulating material 60 appearing in the hole is removed, and the innermost wall surface 2a is removed by the method described in FIGS. The flange 30 is bonded and the pipe is connected. After that, the portion from which the heat insulating material has been removed is filled with the heat insulating material again, and the hole of the outer wall surface 2b is closed by the plate 62 for repair.

The pipe construction method of the present invention is not limited to the case where the water treatment device is connected to the water storage tank that stores water as in the embodiment, but is not limited to the case where any pipe is connected to the water storage tank that stores water. Can be applied.

[0045]

According to the pipe construction method of the present invention, the pipe mounting flange is fixed at a position lower than the water level on the outer wall surface of the water storage tank in which water is stored, and the connection branched to the flange is attached. Install a horizontal valve that has a horizontal flow path through the pipe and a vertical valve that has a vertical flow path, and then insert a drilling tool with a blade for making a circular hole at the tip through the horizontal valve. , With the vertical valve open, use the drilling tool to make a hole in the outer wall surface of the water tank, and discharge the fine chips generated during the drilling along with the water in the tank from the vertical valve, and then open the hole. Since the tool was removed and the pipe was connected to either of the valves, the chips generated during drilling did not enter the water tank, and when the hole was opened on the outer wall surface of the water tank. Denizo Since two valves are attached to the outside of the hole, removing the drilling tool and closing the two valves will stop the discharge of water from the water tank. It is not necessary to stop the water supply, and the pipes can be connected in the state of uninterrupted water. The tool of the present invention is a cap that can be fixed to one end of a pipe, a shaft that is rotatably passed through the center of the cap, and that is fixed to the tip of the shaft. Rotation of the shaft causes a circular hole in a plate-shaped object. It is provided with a blade that can be opened, and by using this tool, the pipe construction method according to the present invention can be easily carried out.

[Brief description of drawings]

FIG. 1 is a flow path diagram schematically showing a water tank to which a pipe connection is applied according to the present invention and a water treatment device as an example.

FIG. 2 is a front sectional view of an essential part showing an embodiment of a construction method for connecting pipes in a state where water is stored in a water storage tank.

FIG. 3 is a flowchart showing the embodiment.

FIG. 4 is a perspective view showing a drilling tool used in the embodiment.

FIG. 5 is a front sectional view of an essential part showing an embodiment of a construction method when the wall surface of the water storage tank is a composite plate.

[Explanation of symbols]

2 water tank 4 supply outlet Water in 3 water tanks 10 Water treatment equipment 14 pumps 16 Electrolysis unit 30 flange 36 Connection pipe 38 Horizontal valve 39 Vertical valve 40 drilling tools 42 blades 44 cap 48 piping

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F16L 41/04 E03B 11/00 F16L 1/00

Claims (10)

(57) [Claims] 1. A method of constructing a water tank pipe, which comprises the step of connecting a pipe from the outside to a water tank having water stored therein, including the following steps. (A) A step of fixing a pipe mounting flange at a position lower than the water level on the outer wall surface of the water storage tank in which water is stored inside, (B) Flowing horizontally through a connecting pipe branched to the flange. Attaching a horizontal valve communicating with the passage and a vertical valve communicating with the passage in the vertical direction (C), then inserting a drilling tool having a blade for making a circular hole at the tip through the horizontal valve, D) With the vertical valve opened, a hole is made in the outer wall surface of the water storage tank by the drilling tool, and fine chips generated during the drilling are discharged from the vertical valve together with the water in the water tank. And (E) a step of removing the drilling tool and connecting a pipe to either of the valves. 2. The step (E) comprises closing the vertical valve after chips have been discharged from the vertical valve, removing the drilling tool and closing the horizontal valve, and then removing the pipe. The pipe construction method according to claim 1, which is performed so as to be connected. 3. The pipe construction method according to claim 1, wherein the step of fixing the flange in the step (A) is an adhesion step using an adhesive. 4. The pipe construction method according to claim 3, wherein the flange is fixed to the outer wall surface of the water tank by using an auxiliary mechanism until the adhesive has a predetermined adhesive strength. 5. The outer wall surface to which the flange is fixed in the step (A) is an outer wall surface of the plate member which is in contact with water at the innermost side when the wall surface of the water storage tank is a composite plate composed of a plurality of plate members. The piping construction method according to any one of 1 to 4. 6. The connected pipe is a pipe connected to a water treatment device that takes in water from the water storage tank, processes the water, and returns the water to the water storage tank, and supplies water to the water treatment device in the water storage tank. Plumbing,
The pipe construction method according to claim 1, wherein two pipes for returning water from the water treatment device are connected. 7. The connection position of the two pipes in the water tank is farthest from each other when viewed from above the water tank.
Piping construction method according to claim 6 is that position. 8. A connection position of a pipe for returning water from the water treatment device among connection positions of the two pipes in the water storage tank is arranged near a supply outlet for supplying water from the water storage tank to a water supply inlet. The pipe construction method according to claim 7. 9. A drilling tool for use in the piping construction method according to claim 1, further comprising: a cap that can be fixed to one end of the pipe; and a shaft that is rotatably passed through the center of the cap. A drilling tool, comprising: a blade fixed to the tip of the shaft and capable of making a circular hole in a plate-shaped object by rotation of the shaft. 10. The drilling tool according to claim 9, wherein the shaft is flexible.