JP2013170595A - Fluid pipe branching device and method of branching fluid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid pipe branching device which can be formed compactly and enables hole drilling and branching work to be done easily, and to provide a method of branching a fluid.SOLUTION: A fluid pipe 1 is fitted externally by a case body 3 in a sealed state with at least a partially required space S formed between the case body and the outer circumferential surface of the fluid pipe 1. The case body 3 includes: a working pipe part 15 for drilling a branch hole 13; a branch pipe part 11 communicated with the working pipe part 15 via the required space S; and a valve element 9 capable of opening and closing the working pipe part 15 and the branch pipe part 11 by its movement in the required space S of the case body 3. The valve element 9 is structured to open the working pipe part 15 by closing the branch pipe part 11 and to open the branch pipe part 11 by closing the working pipe part 15.

Description

  The present invention relates to a fluid pipe branching device for branching a fluid flowing in a fluid pipe in a direction different from the predetermined direction in an uninterrupted flow state through a branch hole formed by drilling from the fluid pipe in a predetermined direction. The present invention relates to a fluid branching method.

  A fluid pipe branching device and a fluid branch for branching a fluid flowing in the fluid pipe in a direction different from the predetermined direction in an uninterrupted state through a branch hole formed by drilling from a predetermined direction of a conventional fluid pipe As a method, a case body provided with a branch pipe part and a work pipe part that open to the side and upward is mounted on the outer peripheral surface of a water main pipe (fluid pipe), and the perforation attached to the work pipe part. A branch hole is drilled on the upper surface of the water main by a machine. Thereafter, the drilling machine is removed, the valve body is attached to the working pipe portion, the branch hole is temporarily blocked by the valve body, and the branch pipe is connected to the branch pipe portion. And the tap water (fluid) is branched to the branch pipe side from a water main by raising a valve body and opening a branch hole (for example, refer to patent documents 1).

Japanese Patent No. 3752321 (page 3, FIG. 6)

  However, in Patent Document 1, it is necessary to separately attach a valve body to the working pipe portion, and the structure of the fluid pipe branching device becomes large, so that the manufacturing and installation of the fluid pipe branching device takes cost and labor. There was a thought. Further, since the branch hole is directly closed by the valve body, the dimensional accuracy and position accuracy of the branch hole and the valve body are required, and there is a problem that the closing of the branch hole becomes a complicated operation.

  The present invention has been made paying attention to such problems, and it is possible to form a fluid pipe branching device in a compact manner, and to easily perform drilling and branching operations and a fluid branching device. It aims to provide a method.

In order to solve the above problems, a fluid pipe branching device of the present invention is
A fluid pipe branching device for branching a fluid flowing in the fluid pipe through a branch hole formed by drilling from a predetermined direction of the fluid pipe in a non-continuous flow state in a direction different from the predetermined direction,
The fluid pipe is externally fitted in a sealed manner in a state where at least a part of the required space is formed between the fluid pipe and the outer circumferential surface of the fluid pipe. A working pipe part, a branch pipe part communicating with the working pipe part via the required space, and a valve body capable of opening and closing the working pipe part and the branch pipe part by moving in the required space of the case body And are provided,
The valve element is provided so as to close the branch pipe part and open the work pipe part, and close the work pipe part and open the branch pipe part.
According to this feature, since the valve body that moves in the required space of the case body is provided in the case body, there is no need to provide separate on-off valves or the like in the work pipe section and the branch pipe section, and the fluid pipe branch The structure of the apparatus can be made compact. Furthermore, when a branch hole is drilled in the fluid pipe, the branch pipe section is closed by opening the work pipe section with the valve body, and the branch hole that requires dimensional accuracy or position accuracy is opened and closed with the valve body. In addition, when the fluid is branched in a direction different from the predetermined direction, the working tube portion is closed by opening the branch tube portion, so that the drilling and branching operations can be easily performed.

The fluid pipe branching device of the present invention is
An annular seal member is provided on the peripheral edge of the working tube portion and the branch tube portion.
According to this feature, by providing the annular seal member, the sealing performance can be improved when the working tube portion and the branch tube portion are closed, and the valve body slides while contacting the seal member. Therefore, damage due to sliding with the inner peripheral surface of the case body is prevented.

The fluid pipe branching device of the present invention is
The case body is characterized in that an operation portion capable of operating the valve body from the outside is provided.
According to this feature, the work tube portion and the branch tube portion can be easily closed or opened from the outside of the case body.

The fluid pipe branching device of the present invention is
The case body is composed of a plurality of divided bodies, and one of the divided bodies is provided with the working tube portion and the branch tube portion.
According to this feature, since the working tube portion and the branch tube portion are collectively provided in one divided body among the plurality of divided bodies, it is possible to easily assemble and remove the fluid pipe.

The fluid pipe branching device of the present invention is
A rust-proof core is fitted in the branch hole.
According to this feature, the rust-proof core can be easily fitted into the branch hole using the work tube portion having the branch hole.

The fluid branching method of the present invention comprises:
A fluid branching method for branching a fluid flowing in the fluid pipe in an uninterrupted state in a direction different from the predetermined direction through a branch hole formed by drilling from a predetermined direction of the fluid pipe,
A fluid pipe is formed by a case body provided with a valve body capable of opening and closing the work pipe section and the branch pipe section by communicating the work pipe section and the branch pipe section through the required space and moving in the required space. Next, the branch pipe portion is closed with the valve body and the working pipe portion is opened, and a branch hole is drilled in the fluid pipe using the drilling means through the working pipe portion. At the same time, a branch pipe is connected to the branch pipe section, and then the working pipe section is closed by the valve body and the branch pipe section is opened to allow the fluid flowing in the fluid pipe to pass through the branch hole to the branch pipe section side. It is characterized by the fact that it is made to flow through.
According to this feature, the case body is provided with a valve body capable of opening and closing the work pipe section and the branch pipe section by moving in the required space, so that the work pipe section and the branch pipe section are provided with different levels. There is no need to provide an on-off valve or the like, and the space for the fluid branching method can be made compact. Furthermore, when drilling a branch hole in the fluid pipe, the branch pipe is closed by opening the work pipe with the valve body, and the branch hole requiring dimensional accuracy or position accuracy is opened and closed with the valve body. When the fluid flowing in the fluid pipe is branched, the work pipe part is closed by opening the branch pipe part, so that the drilling and branching work is simplified and the work is facilitated. Can do.

It is front sectional drawing of a fluid pipe branching apparatus. It is a side view of a fluid pipe branching device. It is front sectional drawing which shows the state which the cutter before fluid pipe | tube drilling waits in the upper position of a working valve. It is front sectional drawing which shows the state which has drilled the branch hole in the fluid pipe | tube. It is front sectional drawing which shows the state which removed the cutter and the work valve, fitted the antirust core into the branch hole, and obstruct | occluded the work pipe part with the valve body. It is front sectional drawing which shows the state which connected the branch pipe to the branch pipe part obstruct | occluded with the valve body. It is front sectional drawing which shows the state which constructed | assembled the branch flow path in the branch pipe part open | released by the valve body.

  EMBODIMENT OF THE INVENTION The form for implementing the fluid pipe branching apparatus and the fluid branching method which concern on this invention is demonstrated below based on an Example.

  A fluid pipe branching apparatus and a fluid branching method according to an embodiment will be described with reference to FIGS. As shown in FIGS. 1 and 2, the fluid pipe 1 of the present embodiment is made of, for example, ductile cast iron for waterworks buried in the ground, is formed in a substantially circular shape in cross section, and an inner peripheral surface is illustrated. Not covered with resin powder coating or mortar layer. The fluid pipe according to the present invention may be made of metal such as cast iron or steel, or made of vinyl chloride, polyethylene or polyolefin. Furthermore, in the present embodiment, the fluid in the fluid pipe 1 is clean water, but the fluid flowing in the fluid pipe is not necessarily limited to clean water. For example, in addition to industrial water, agricultural water, sewage, etc., gas or gas It may be a gas-liquid mixture of liquid and liquid.

  The fluid pipe 1 is externally fitted by a case body 3 composed of an upper case body 3a and a lower case body 3b, which is a divided body of the present invention, and more specifically, between the case body 3 and the outer peripheral surface of the fluid pipe 1. At least a part of the required space S is formed in a sealed manner. The case body of the present invention may have a divided structure composed of a plurality of three or more divided bodies, or does not have a divided structure, and is continuously formed by a mold, welding, machining, or the like. It does not matter. Further, the material of the case body 3 is made of a metal material such as cast iron. However, various materials can be used as in the case of the fluid pipe described above as long as the material is applied according to the material of the fluid pipe. May be.

  The dividing surface of the upper case body 3a and the lower case body 3b divided into two is inclined at approximately 45 degrees with respect to the vertical plane passing through the tube axis of the fluid pipe 1, both of which are in the required space S via the packing 5. In order to prevent fluid from flowing out, the bolts and nuts 7 are joined in a sealed manner. The upper case body 3a includes a work tube portion 15 for drilling a branch hole 13 substantially vertically above the fluid tube 1, and a split specification branch extending in a direction substantially orthogonal to the work tube portion 15. A tube portion 11. The branch pipe part 11 and the work pipe part 15 communicate with the required space S at the inner part.

  The branch pipe part 11 will be described in more detail. The branch pipe part 11 includes a receiving part 11a extending in a substantially horizontal direction of the case body 3, and a connecting pipe 11b inserted and connected to the receiving part 11a. It is comprised by connecting the receiving part 11a and the connecting pipe 11b with the connector 4. FIG. Further, since the sealing ring 8 is interposed in the gap between the inner peripheral surface of the receiving portion 11a and the outer peripheral surface of the connecting pipe 11b, it can be connected in a sealed manner. In addition, the branch pipe part is not limited to the above-described configuration, and may be, for example, a branch pipe part extended from the case body alone, and the tip shape of the branch pipe part connected to the branch pipe is: For example, a receptacle shape, an insertion shape, or a cut end face shape may be used.

  Further, the case body 3 is provided with a valve body 9 that extends in an arc shape in cross section and moves in the required space S along the inner peripheral surface, and a work tube portion 15 on the inner peripheral surface of the case body 3. In addition, annular seal members 6 a and 6 b are provided on the peripheral edge portion of the branch pipe portion 11. Therefore, the valve body 9 comes to slide while abutting against the seal members 6a and 6b, and thereby the work tube portion 15 and the branch tube portion 11 can be opened and closed. Further, the valve body 9 is designed to open the work tube portion 15 when closing the branch tube portion 11 and to open the branch tube portion 11 when closing the work tube portion 15. It can be operated by an operation unit 10 (see FIG. 2) provided on the outside. A drive mechanism (not shown) such as a gear that meshes with the valve body 9 is provided at the tip of the operation unit 10, and the valve body 9 is rotated by the operation unit 10 so that the valve body 9 is in the case body 3. It moves along the inner peripheral surface.

  The work tube portion 15 is provided with a sealing lid 17 that prevents the flow of fluid flowing out from the work opening portion 15a. Although the attachment of the sealing lid 17 is not described in detail, the flange 15b of the working tube portion 15 is flange-joined via a sealing member. Further, the perforated part of the branch hole 13 of the fluid pipe 1 perforated by the cutter 23 (see FIG. 4) which is a perforating means in the present invention is provided with a rust preventive member 14a on the outer peripheral part to prevent corrosion. The rust prevention core 14 is fitted.

  Next, a process of assembling the fluid pipe branching device in an uninterrupted state and a fluid branching method will be described with reference to FIGS. As shown in FIG. 3, an operation shaft sliding guide case body 25 of the cutter 23 is connected in a sealed manner above the work tube portion 15 via a flange short tube 30, and the cutter 23 is at an upper position. Waiting. At this time, the valve body 9 closes the flow path in the branch pipe portion 11, and the seal member 6 b is in pressure contact with the gap between the case body 3 and the valve body 9, thereby the branch pipe portion 11. The inner flow path is sealed. Therefore, the flow path in the working tube portion 15 is in an open state. Further, a plug member 12 that closes the end of the branch pipe part 11 is attached in advance to an end part of the branch pipe part 11 facing the fluid pipe 1 side. In addition, you may make it attach this plug member when making the flow path in the branch pipe part 11 into an open state.

  As shown in FIG. 4 from the standby state of the cutter 23 in FIG. 3, the cutter 23 is lowered toward the top of the fluid pipe 1, and the top of the fluid pipe 1 is cut to form the branch hole 13. At this time, since the flow path in the branch pipe portion 11 is maintained in the closed state by the valve body 9, the fluid ejected from the fluid pipe 1 to the required space S through the branch hole 13 is downstream of the valve body 9. There is no flow. Further, by opening the drain 26 provided in the operation shaft sliding guide case body 25, chips generated when the branch holes 13 are drilled are multiplied by the fluid ejected into the required space S and discharged to the outside.

  After the branch hole 13 is formed in the fluid pipe 1, the flow path in the working pipe portion 15 is once closed by the valve body 9. At this time, the seal member 6a is pressed into contact with the gap between the case body 3 and the valve body 9, and the flow path in the working tube portion 15 is sealed. On the other hand, although the flow path in the branch pipe part 11 is in an open state, the end part of the branch pipe part 11 is closed by the plug member 12, so that no fluid leaks outward.

  Although not shown here, a core insertion machine is installed in place of the cutter 23, and the flow path in the working tube portion 15 is opened again by the valve body 9. Next, as shown in FIG. 5, using the core insertion machine, the rust preventive core 14 is fitted and fitted into the branch hole 13 so as not to be detached, and then the flow path in the working tube portion 15 is closed by the valve body 9, While maintaining the state, the operating shaft sliding guide case body 25 and the flange short tube 30 are removed from the working tube portion 15 and removed, and the sealing lid 17 is hermetically joined to the flange 15b of the working tube portion 15.

  Next, as shown in FIG. 6, the valve body 9 closes the flow path of the branch pipe section 11, removes the plug member 12, and seals the branch pipe 27 at the outer end of the branch pipe section 11. Insert and join. At this time, the flow path of the working tube portion 15 is in an open state, but the fluid does not leak out from the working tube portion 15 by the sealing lid 17.

  Finally, as shown in FIG. 7, if the valve body 9 is slid upward to open the flow path in the branch pipe portion 11, a part of the fluid flowing through the flow path of the fluid pipe 1 is branched into the branch hole 13. A flow path that can flow toward the branch pipe 27 connected to the branch pipe portion 11 branched in the substantially horizontal direction of the fluid pipe 1 through the required space S is secured. In addition, since the branch pipe part 11 is comprised by the division | segmentation specification which consists of the receiving port part 11a and the connecting pipe 11b as mentioned above, for example, after the branch pipe 27 installation, the flow path of the branch pipe part 11 by the valve body 9 is used. The pipe laying is freely closed, and another piping member or a valve body or a lid member is provided in the receiving portion 11a from which the branch pipe 27 and the connecting pipe 11b are removed. The degree increases.

  In the fluid pipe branching device in the present embodiment, the valve body 9 that moves in the required space S of the case body 3 is provided in the case body 3, so that the work pipe section 15 and the branch pipe section 11 are separated from each other. There is no need to provide an on-off valve or the like, and the structure of the fluid pipe branching device can be made compact. Further, when the branch hole 13 is formed in the fluid pipe 1, the branch pipe part 11 is closed by opening the work pipe part 15 by the valve body 9, and the branch hole in which dimensional accuracy, position accuracy, etc. are required. 13 is not required to be opened and closed by the valve body 9, and when the fluid is branched in a direction different from the predetermined direction, the work tube portion 15 is closed by opening the branch tube portion 11. Work can be done easily.

  And the annular seal members 6a and 6b are provided on the peripheral portions of the work tube portion 15 and the branch tube portion 11, thereby enhancing the sealing performance when the work tube portion 15 and the branch tube portion 11 are closed. In addition, since the valve body 9 slides while being in contact with the seal members 6a and 6b, the valve body 9 is prevented from being damaged by sliding with the inner peripheral surface of the case body 3.

  Furthermore, the operation tube portion 15 and the branch tube portion 11 can be easily closed or opened from the outside of the case body 3 by the operation unit 10 provided outside the case body 3.

  Further, the case body 3 is divided into two in the vertical direction, and the dividing surface is inclined at approximately 45 degrees with respect to the vertical plane passing through the tube axis of the fluid pipe 1, that is, the upper case body 3a which is one of the divided bodies Since the part 15 and the branch pipe part 11 are provided together, the assembly and removal work to the fluid pipe 1 can be performed easily.

  When the rust prevention core 14 is fitted into the branch hole 13, the rust prevention core 14 can be easily fitted into the branch hole 13 by using the work tube portion 15 having the branch hole 13 formed therein.

  Further, in the fluid branching method in the present embodiment, the case body 3 is provided with the valve body 9 capable of opening and closing the work pipe portion 15 and the branch pipe portion 11 by moving in the required space S. Therefore, it is not necessary to provide a separate on-off valve or the like in the working pipe portion 15 and the branch pipe portion 11, and the space for the fluid branching method can be made compact. Further, when the branch hole 13 is formed in the fluid pipe 1, the branch pipe part is closed by opening the working pipe part 15 by the valve body 9, and the dimensional accuracy, the position accuracy, etc. are required. When the fluid flowing in the fluid pipe 1 is branched, the work pipe part 15 is closed by opening the branch pipe part 11, so that the drilling and branching work is not necessary. It is simplified and can be done easily.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, the case body 3 includes the work pipe portion 15 extending substantially upward in the vertical direction of the fluid pipe 1 and the branch pipe portion 11 extending in a direction substantially orthogonal to the work pipe portion 15. By being provided, the approach to the fluid pipe 1 can be easily performed without interfering with each other. Especially, even if the working pipe section and the branch pipe section are not arranged in an orthogonal state, It does not matter as long as the extending directions of both the pipe sections of the working pipe section and the branch pipe section are different.

  Further, a plurality of work tube portions may be provided so that operations such as drilling can be performed from various directions, or a plurality of branch tube portions may be provided so as to be branched in various directions. Further, in the embodiment, the required space S is formed between both the upper case body 3a and the lower case body 3b constituting the case body 3 and the outer peripheral surface of the fluid pipe 1. In addition, a required space is formed only between the upper case body and the outer peripheral surface of the fluid pipe 1, and the outer case is externally fitted to the fluid pipe 1 in a state where the lower case and the outer peripheral surface of the fluid pipe 1 are in contact with no gap. May be.

  In addition, the seal member is not necessarily provided. For example, the valve body is formed of a material having elasticity, and the work pipe portion or the branch pipe portion is formed by directly contacting the inner peripheral surface of the case body. It may be sealed.

  In the above-described embodiment, the angle of the dividing surface of the case body is limited to about 45 degrees or the number of case bodies is divided into two. However, the angle of the dividing surface and the number of divisions are limited to this. However, it is appropriately selected depending on the application environment of the fluid pipe branching device, the material and size of the parts, and the like. Further, the planar cross-sectional shape of the branch hole formed in the fluid pipe is not limited to a circle or an ellipse, but may be a rectangular shape, and is appropriately selected in consideration of the type of cutter to be used, a required branch flow rate, and the like. Accordingly, it goes without saying that the rust-proof core is manufactured in accordance with the formed branch hole.

1 Fluid pipe 3 Case body 3a Upper case body (divided body)
3b Lower case body (divided body)
6a, 6b Seal member 9 Valve body 10 Operation part 11 Branch pipe part 13 Branch hole 14 Rust prevention core 15 Work pipe part 23 Cutter (drilling means)
27 Branch pipe S Required space

Claims (6)

A fluid pipe branching device for branching a fluid flowing in the fluid pipe through a branch hole formed by drilling from a predetermined direction of the fluid pipe in a non-continuous flow state in a direction different from the predetermined direction,
The fluid pipe is externally fitted in a sealed manner in a state where at least a part of the required space is formed between the fluid pipe and the outer peripheral surface of the fluid pipe, and the case body is provided with the branch hole. A working pipe part, a branch pipe part communicating with the working pipe part via the required space, and a valve body capable of opening and closing the working pipe part and the branch pipe part by moving in the required space of the case body And are provided,
The valve body is provided so as to close the branch pipe part and open the working pipe part, and to close the work pipe part and open the branch pipe part. Branch device.   The fluid pipe branching device according to claim 1, wherein an annular seal member is provided at a peripheral edge of the working pipe part and the branch pipe part.   The fluid pipe branching device according to claim 1 or 2, wherein the case body is provided with an operation portion capable of operating the valve body from the outside.   The fluid according to any one of claims 1 to 3, wherein the case body includes a plurality of divided bodies, and the working pipe section and the branch pipe section are provided in one of the divided bodies. Pipe branching device.   The fluid pipe branching device according to any one of claims 1 to 4, wherein a rust prevention core is fitted into the branch hole. A fluid branching method for branching a fluid flowing in the fluid pipe in an uninterrupted state in a direction different from the predetermined direction through a branch hole formed by drilling from a predetermined direction of the fluid pipe,
A fluid pipe is formed by a case body provided with a valve body capable of opening and closing the work pipe section and the branch pipe section by communicating the work pipe section and the branch pipe section through the required space and moving in the required space. Next, the branch pipe portion is closed with the valve body and the working pipe portion is opened, and a branch hole is drilled in the fluid pipe using the drilling means through the working pipe portion. At the same time, a branch pipe is connected to the branch pipe section, and then the working pipe section is closed by the valve body and the branch pipe section is opened to allow the fluid flowing in the fluid pipe to pass through the branch hole to the branch pipe section side. A fluid branching method characterized in that the fluid is allowed to flow.

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