JP4541843B2 - Continuous water flow path forming device for existing fluid pipes - Google Patents

Description

  The present invention relates to a continuous water flow path forming apparatus for an existing fluid pipe, which can form a flow path of an existing fluid pipe such as a water and sewage pipe and a gas pipe without temporarily blocking the flow of an internal fluid.

  A conventional continuous flow channel forming device for an existing fluid pipe is mounted on a peripheral surface of an existing fluid pipe in a watertight manner, and after cutting the existing fluid pipe inside the casing, the cut surface of the existing fluid pipe A flow path forming device such as a partition is installed between them (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 4-29188 (page 1, Fig. 3)

  However, in Patent Document 1, when the partition body is installed between the cut surfaces of the existing fluid pipe after the existing fluid pipe is cut, when the partition body is moved downward from the upper side toward the installation position, Since the sealing material provided on both side surfaces of the partition is deformed by sliding contact with the inner surface of the housing, there is a problem that the sealing effect of the partition cannot be maintained at the installation position.

  The present invention has been made paying attention to such a problem, and when the partition body is installed between the cut surfaces of the existing fluid pipe after the existing fluid pipe is cut, the partition body is set to the installation position from above. An object of the present invention is to maintain a sealing effect and prevent fluid leakage at the installation position of the partition without causing deformation of the seal material disposed on both side surfaces of the partition when the downward movement is performed. And

In order to solve the above-described problem, the continuous fluid flow path forming device for an existing fluid pipe according to claim 1 of the present invention provides:
The outer peripheral surface of the existing fluid pipe is sealed with a casing capable of securing at least three-direction flow paths, and the existing fluid pipe is cut in an indefinite water state, and a partition is installed inside the casing having at least a bottom surface and a side surface. And a continuous water flow path forming device for an existing fluid pipe that forms another flow path,
The partition body includes a partition wall that blocks at least one flow path of the fluid in the housing, and a fluid guide portion having a guiding curved surface, and a sealing material is provided on at least both side surfaces and a bottom surface of the peripheral surface of the partition wall. And at least one pair of contact surfaces on the inner side surface of the casing, on which the sealing material provided on both side surfaces of the partition wall abuts, is formed as a thick side step on the inner side surface of the casing. is Rutotomoni, the bottom surface of the housing is a installation position of the partition member, the abutment surface which the sealing member abuts watertight manner in the bottom surface of the partition wall, the bottom stage of the thickness on the bottom of the housing At least one strip is formed as a portion and is continuous with the side stepped portion, and the upper surface of the bottom stepped portion that forms a contact surface with the sealing material faces the upstream side of the existing fluid pipe. It is characterized in that provided on the downward slope Te
According to this feature, it is possible to secure a contact surface that contacts both side surfaces of the partition wall only by processing and forming the side surface step portion and surface treatment of the side surface step portion. Compared to what is to be done, the process formation is simple and inexpensive.
In addition, since thick step portions are formed on the inner side surface and inner bottom surface of the housing, the size and shape of the partition necessary for blocking the flow path in the pipe are compared with those of the housing without the step portion. Since it can be kept small, the partition can be reduced in size and weight, and the installation work of the partition is simplified.
Furthermore, the chips are less likely to adhere to the upper surface of the bottom step due to the water flow in the pipe of the existing fluid pipe and the gradient of the upper surface of the bottom step.

The existing fluid pipe continuous water flow path forming apparatus according to claim 2 of the present invention is the existing fluid pipe continuous water flow path forming apparatus according to claim 1, wherein the partition wall extends from the upper part to the lower part. It has a narrow taper shape, and is characterized in that the side stepped portion is formed so as to increase in thickness from the upper part to the lower part so as to correspond to the change in the width dimension of the partition wall.
According to this feature, when the partition body is installed, the sealing material provided on both side surfaces of the partition wall is hardly compressed by sliding contact with the inner surface of the housing during the lowering operation of the partition body. In the installation position, the seal material provided on both side surfaces of the partition wall contacts the inner surface of the housing almost simultaneously, so that fluid leakage due to deformation of the seal material can be prevented.

The continuous fluid flow path forming device for an existing fluid pipe according to claim 3 of the present invention is the continuous water flow path forming device for an existing fluid pipe according to claim 1 or 2, wherein the casing is at least vertically divided into two. The side surface stepped portion of the casing is joined by welding from the outer peripheral surface side to form the side surface stepped portion that is continuous in the vertical direction. Yes.
According to this feature, when the post-weld deformation generated in the butt portion at the side stepped portion is polished, the position of the polishing portion can be easily identified by the stepped portion of the side stepped portion, and the wall thickness can be increased. Since it is formed as a stepped portion, a polishing margin can be secured.

The continuous fluid flow path forming device for an existing fluid pipe according to claim 4 of the present invention is the continuous water flow path forming device for an existing fluid pipe according to any one of claims 1 to 3 , wherein the peripheral surface of the partition wall A sealing material integrally connected to the bottom surface and both side surfaces by a convex R surface, and the bottom surface step portion and the side surface step portion of the housing are integrally connected to the concave R surface. It is said.
According to this feature, at the position where the partition is installed inside the housing, the sealing surface is integrally connected to the bottom surface and both side surfaces of the partition wall by the convex R surface, and the bottom surface step portion and the side surface step portion of the housing. The load continuously applied to the sealing material on the bottom surface of the partition wall that has received a downward pressing force and then gradually applied to the sealing material on both side surfaces via the R surface. Therefore, it is possible to prevent the sealing material on the bottom surface from being deformed in the lateral direction, and the sealing effect on the contact surface can be maintained.

The existing fluid pipe continuous water flow path forming device according to claim 5 of the present invention is the existing fluid pipe continuous water flow path forming device according to any one of claims 1 to 4 , wherein It is characterized in that at least two pairs of side step portions are formed.
According to this feature, the change direction of the flow path can be selected as appropriate by changing the installation position of the partition in the housing in which at least two pairs of side step portions are formed in advance. Accordingly, it is not necessary to change the formation portion of the side step portion of the casing, and the effort and cost of designing and manufacturing the casing can be reduced.

  Examples of the present invention will be described below.

  An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 shows the entire piping in which a continuous water flow path forming device is attached to an existing water pipe 1 in the first embodiment of the present invention and a new water pipe 3 is connected in communication. It is a top view which shows an image. (A) is a plan view showing a state in which the continuous water channel forming device is attached to the existing water pipe 1 and the new water pipe 3 is connected in communication and the flow direction of the fluid in the pipe, and (b) is a continuous water channel. It is the top view which showed the state which cut | disconnected the existing water pipe 1 inside a formation apparatus, and the flow direction of the fluid in a pipe | tube, (c) is the partition 4 in an unrestricted water flow path formation apparatus, after cutting the existing water pipe 1 It is the top view which showed the state which installed and the flow direction of the fluid in a pipe | tube. Fig.2 (a) is a perspective view which shows the partition body 4 in this invention, (b) is a perspective view which shows the whole image of a continuous water flow path formation apparatus. FIG. 3A is a view showing a side surface and a partial cross section of the partition 4, and FIG. 3B is a front view of the partition 4. FIG. 4A is a plan view showing the entire image of the continuous water flow path forming device 2, and FIG. 4B is a plan view showing the position where the partition body 4 is similarly installed. FIG. 5 is a cross-sectional view of the housing 10 taken along the line ff showing the step portions 15 and 16 provided integrally and continuously on the inner side surface and the inner bottom surface of the housing 10. FIG. 6A is a longitudinal sectional view of the housing 10 at a midpoint where the partition 4 is moved downward from the top of the housing 10 toward the installation position, and FIG. 6B is a diagram illustrating the partition 4 being installed. It is a longitudinal cross-sectional view of the housing | casing 10 in the point installed in the position. FIG. 7 is an enlarged cross-sectional view taken along lines aa and bb in FIG. 4A, showing a butting portion that joins the upper housing 11 and the lower housing 12 which are divided into upper and lower parts by welding. ) Is an enlarged cross-sectional view showing a butt portion before welding, (b) is an enlarged cross-sectional view showing a butt portion after welding, and (c) an enlarged cross-section showing a butt portion after polishing. FIG. FIG. 8A is a plan view showing the guide pieces 20, 20 ′, 21, 21 ′ in the housing 10, FIG. 8B is a dd sectional view of FIG. 8A, and FIG. Similarly it is cc sectional drawing. FIG. 9 is a side sectional view showing the steady pin 22 at the installation position in the housing 10 of the partition 4. FIG. 10 is a schematic view showing a piercing cutter 32 for cutting a pipe inside the continuous water flow path forming device 2. FIG. 11 is a schematic view showing an insertion machine 34 for installing the partition body 4 inside the continuous water flow path forming device 2. FIG. 12 is a cross-sectional view taken along the line ee of FIG. 6B in a state where the partition body 4 is installed inside the continuous water flow path forming device 2. FIG. 13 (a) is a perspective view showing an entire image of the continuous water flow path forming apparatus 2 ′ in the second embodiment of the present invention, and FIG. 13 (b) is a plan view of the continuous water flow path forming apparatus 2 ′. . FIG. 14 is a perspective view showing a modification of the partition.

  As shown in FIG. 1 (a), the piping situation after installation of the continuous water flow path forming device 2 in the first embodiment of the present invention is as follows, with respect to the flow direction of the fluid in the pipe of the existing water pipe 1 that is a water pipe. For example, a continuous water flow path comprising the casing 10 in the first embodiment of the present invention is provided at two upstream and downstream pipe portions sandwiching a specific area E that needs to be removed or repaired in a part of the existing water pipe 1. The forming apparatus 2 is water-tightly attached to the outer peripheral surface of the existing water pipe 1 and the new water pipe 3 that connects the two continuous water flow path forming apparatuses 2 in communication is disposed, and then the existing water pipe 1 inside the housing 10 is disposed. A part is cut | disconnected (FIG.1 (b)), the partition body 4 is mounted | worn with a cutting | disconnection location, and it has the structure which detours the existing flow path of the existing water pipe 1, as shown in FIG.1 (c).

  Due to the new installation of the detour route by the arrangement of the continuous water flow path forming device 2 and the newly installed water pipe 3, the fluid in the pipe does not flow down to the specific area E of the existing water pipe 1, so that it is located in the specific area E. Work such as removal or repair of the pipe part becomes possible.

  As shown in FIG. 2 and FIG. 9, the external shape of the continuous water flow path forming device 2 in the first embodiment of the present invention is composed of a partition 4 that changes the flow path of an existing water pipe and a housing 10. 10 can be divided into two upper and lower parts composed of an upper housing 11 and a lower housing 12. The casing 10 is formed in a cylindrical shape having an inner diameter larger than the outer diameter of the existing water pipe 1. A circular upper opening U that opens upward is formed on the upper surface, and a horizontal opening is also formed on the side surface. Three circular side openings A, A ′ and B are formed.

  As shown in FIGS. 2 and 4, of the side openings A, A ′ and B, the side openings having the same central axis C in the horizontal direction and located opposite to each other on the side surface of the housing 10. The inner diameters of the portion A and the side opening A ′ are formed to be substantially the same or slightly larger than the outer diameter of the existing water pipe 1, and the inner surfaces of the side openings A and A ′ in the vicinity of both ends are watertight. A typical sealing material 8c is provided. Further, the central axis D of the side opening B is formed in a horizontal direction substantially orthogonal to the central axis C.

  Reinforcing ribs 14 are provided on the outer surface of the upper housing 11 and the lower housing 12 and on the outer bottom surface of the housing 12, and the bottom surface of the housing 12 is installed inside the housing 10. Drainage ports 13 that can be opened and closed are provided at two locations sandwiching the partition 4 from the front and back sides.

  The attachment of the continuous water flow path forming device 2 to the existing water pipe 1 will be described with reference to FIG. 2B. The upper housing 11 and the lower housing 12 are respectively connected to the central axis C from above and below the existing water pipe. Attach to the outer periphery of the existing water pipe at a position that matches the center axis of the existing water pipe. A butt portion of the upper housing 11 and the upper housing 12 attached to the outer peripheral portion of the existing water pipe is formed with a groove portion 18 for welding, and as will be described later with reference to FIG. The upper housing 11 and the lower housing 12 are joined by welding from the outer surface of the lower housing 12. Moreover, the outer periphery of the housing | casing 10 and the existing water pipe 1 is inserted in the opening part A and opening part A 'between the flange 17 by the side of the housing | casing 10, and the pushing ring | wheel 17' of a division structure in the opening part A '. Join the surface.

  The inside of the housing 10 becomes watertight by joining the upper housing 11 and the lower housing 12 by welding, and joining the both ends of the opening A and the opening A ′ and the outer peripheral surface of the existing water pipe. Yes.

  Here, as shown in FIG. 1 and described above, after installing the continuous water flow path forming device 2 at two locations, the upstream portion and the downstream portion sandwiching the specific area E of the existing water pipe 1, the respective openings are opened. A new water pipe 3 connected in watertight communication with the part B is disposed. As a result, as shown in FIG. 1 (a), the internal space of the continuous water flow path forming device 2 and the newly installed water pipe 3 in the upstream portion and the downstream portion sandwiching the specific area E is a closed space integrally connected. Yes and watertight.

  Next, the work process will be described with reference to FIGS. 10 and 11. In the continuous water flow path forming device 2 disposed on the upstream side, the upper opening U can be opened and closed at the upper opening U, and in the closed state. Is provided with an on-off valve 30 that can maintain the water tightness inside the continuous water flow path forming device 2, and the on-off valve 30 after the arrangement is kept closed. Subsequently, a perforation blade 32a having an inner diameter and a height larger than the outer diameter of the existing water pipe 1 and disposed downward on the peripheral edge of the lower end, and having the same central axis as the perforation blade 32a, from the perforation blade 32a An inner hollow cylindrical drilling cutter 32 having a center drill 32b disposed downward at a lower position and a hook 32c provided at the front of the center drill 32b is provided in the inner space of the body 31. The body 31 is opened and closed so that the central axis of the cylindrical piercing cutter 32 is substantially vertically oriented and intersects the central axis of the existing water pipe 1 in the housing 10 in a direction substantially perpendicular to the central axis. A watertight communication connection is made above 30.

  Next, the punching cutter 32 is moved by the stroke 33 that the punching blade 32a moves forward and backward so as to pass through the entire cross section of the existing water pipe 1 while the on-off valve 30 is opened and the drilling cutter 32 is rotated. Move down. By rotating and lowering the drilling cutter 32, the existing water pipe 1 is gradually cut downward from the outer peripheral surface of the upper surface of the existing water pipe 1 at two cut surfaces between the diameters of the bottom edge of the drilling cutter 32. The existing water pipe 1 is cut at two cut surfaces at a point where the perforated blade 32a is lowered so as to pass through the entire cross section of the existing water pipe 1, and the existing water pipe is cut between the two cut surfaces. The piece 1 ′ is cut off from the existing water pipe 1. As shown in FIG. 4B, the cut surface 1 a of the existing water pipe 1 is formed in an arc shape in plan view by cutting with the piercing cutter 32.

  In the above-described cutting operation of the existing water pipe 1, the existing water pipe 1 is in an undisrupted water state, and therefore, the existing water pipe 1 is filled with water pressure, and in the cutting operation by the drilling cutter 32, the center drill 32 b When the fluid reaches the inside of the existing water pipe 1 from the outer peripheral surface of the upper surface of the existing water pipe 1, the fluid inside the existing water pipe 1 leaks out of the pipe, and the fuselage is connected to the inner space and the upper side of the housing 10. The inside of the new water pipe 3 that is connected to the side opening B and the inner space of the continuous water flow path forming device 2 that is mounted on the downstream side is filled. However, as shown in FIG. 1 (a), the two continuous water flow path forming devices 2 and the new water pipe 3 are connected in a watertight manner, so that the fluid leaking from the existing water pipe 1 is constantly It does not leak out of the water flow path forming device 2 and the new water pipe 3. Therefore, the cutting operation can be performed while the fluid in the existing water pipe 1 remains in an undisrupted state. Further, this cutting operation is performed while opening the drainage port 13 shown in FIG. 10 and discharging the chips generated at the time of cutting the existing water pipe 1 to the outside.

  In the upstream continuous water flow path forming device 2, after the cutting operation of the existing water pipe 1, the cutting cutter 32 disposed inside the fuselage 31 and the existing cut-off device hooked on the hooking piece 32 c of the center drill 32 b. The water pipe piece 1 'is carried out to the outside.

  Next, also in the continuous water flow path forming device 2 disposed on the downstream side, the same operation as described above of the punching cutter 32 disposed in the body 31 having the same specifications above the on-off valve 30 is performed. Thus, the existing water pipe 1 is cut and the perforating cutter 32 and the existing water pipe piece 1 'are carried out to the outside.

  At the end of the operation of cutting the existing water pipe 1 and carrying out the existing water pipe piece 1 'in the continuous water flow path forming device 2 arranged on the upstream side and the downstream side, the piping path of the fluid pipe is as shown in FIG. The flow path of the fluid in the fluid pipe is the same as that before the cutting operation, and the downstream flow is bypassed in the upstream water flow path forming device 2 by the path flowing down in the existing water pipe 1. A flow that flows down in the water pipe 3 and joins and flows back into the existing water pipe 1 in the downstream continuous water flow path forming device 2 becomes a coexisting state.

  Subsequently, inside the continuous water flow path forming device 2 on the downstream side, the cut generated in the cut surface of the existing water pipe 1 when cutting the existing water pipe 1 and remaining in the housing 10 without being discharged from the drain port 13. The powder is discharged from the upper opening U by a discharge device (not shown).

  Next, in the existing water pipe piece 1 ′ and the continuous water flow path forming device 2 on the downstream side after discharging the chips, as shown in FIG. 11, the body 31 in which the partition body 4 and the insertion machine 34 are disposed. After 'is connected to the on-off valve 30 in a watertight manner, the on-off valve 30 is opened, and the partition body 4 is pressed by the insertion machine 34 from above to below.

  Here, as shown in FIG. 2 (a), the partition 4 includes two communicating ports 7a and 7b communicating with each other, and a communicating tube 7 made of an elbow-shaped bent tube that changes an existing flow path. The communication tube 7 includes a partition wall 6 to which the communication tube 7 is fixed by the communication tube support member 9a and the bottom plate 9b, and a circular upper lid portion 5 provided in the horizontal direction and integrally connected to the upper end portion of the partition wall 6.

  A sealing material 8 a provided on the peripheral surface of the upper lid portion 5 is formed so as to be in watertight pressure contact with a step portion 19 provided on the inner side surface of the housing 10. Similarly, a sealing material 8b including a sealing material 81b provided on both side surfaces of the partition wall 6 and a sealing material 82b provided on the bottom surface is provided on the inner side surface of the housing 10 at the installation position of the partition body 4. The side surface step portion 15 and the bottom surface step portion 16 in which a part of the bottom surface of the housing 10 bulges are formed in a watertight manner.

  As shown in FIGS. 4B and 6B, the diameter of the communication pipe 7 is formed to be approximately the same as the diameters of the existing water pipe 1 and the new water pipe 3. In addition, at the position where the partition 4 is installed on the bottom step 16 formed in advance in the housing 10, one communication port 7 a of the communication pipe 7 is disposed in the vicinity of the cut surface of the existing water pipe 1. Thus, the center of the communication port 7a is substantially coaxial with the central axis of the existing water pipe 1.

  Similarly, at the position where the partition 4 is installed in the housing 10, the other communication port 7 b of the communication pipe 7 is arranged in the vicinity of the side opening B on the new water pipe 3 side, The center of the communication port 7 b is substantially coaxial with the central axis of the newly installed water pipe 3.

  Therefore, since the existing flow path leads from the cut surface of the existing water pipe 1 to the new water pipe 3 via the communication pipe 7 having substantially the same diameter, the fluid in the existing water pipe 1 is likely to be disturbed. Instead, it flows down through the communication pipe 7 and the newly established water pipe 3.

  As shown in FIG. 11, when the partition 4 is pressed downward by the insertion machine 34 and installed inside the housing 10 shown in FIG. 6B, the fluid flowing down from the upstream side of the opening A is obtained. The flow path is changed substantially orthogonally in the horizontal direction by the communication pipe 7 and is formed so as to flow out from the opening B to the downstream side.

  Next, in the upstream continuous water flow path forming apparatus 2, similarly, after discharging the existing water pipe piece 1 ′ and chips, the partition body 4 is disposed inside the continuous water flow path forming apparatus 2.

  When the partition body 4 is disposed in the upstream and downstream continuous water flow path forming devices 2, the pipe path of the water pipe is as shown in FIG. 1 (c), and the flow of fluid in the existing water pipe 1 The path is such that the flowing-down fluid bypasses in the upstream continuous water flow path forming device 2, flows down in the new water pipe 3, and flows back into the existing water pipe 1 in the downstream continuous water flow path forming apparatus 2. Become. Accordingly, since the fluid does not flow down into the pipe of the specific area E that is the existing flow path, it is possible to remove or repair the pipe portion located in the specific area E.

  Next, each part of the continuous water flow path forming device 2 will be described in detail.

  In the continuous water flow path forming device 2 at the installation position of the partition body 4, as shown in FIG. 5, the contact surface with the bottom surface of the partition wall 6 is formed in a thick stepped portion. When cutting the existing water pipe 1 by 32, the chips generated and dropped from the cut surface of the existing water pipe 1 and adhering to the abutting surface of the bottom surface step portion 16 flow down in the existing water pipe 1 Alternatively, due to the turbulent water flow generated by the rotating operation of the cylindrical piercing cutter 32, the vicinity of the inner bottom surface of the housing 10 is irregularly swung and falls from the contact surface of the bottom stepped portion 16. When the partition body 4 is installed, the sealing material 82b provided on the bottom surface of the partition wall 6 is pressed by the bottom surface step portion 16 without inserting chips, and the sealing performance can be improved. As shown in FIG. 11 (a), the width of the upper surface of the bottom step 16 is suppressed to a narrow size necessary to accommodate the width of the sealing material 82b. It becomes difficult for chips to adhere to the upper surface of 16.

  Further, as shown in FIG. 6A, a sealing material 8b including sealing materials 81b and 82b integrally connected to both side surfaces and a bottom surface of the partition wall 6 by a convex R surface is provided. Also on the inner surface, the side surface step portion 15 and the bottom surface step portion 16 are integrally formed to be continuous with a concave R surface.

  Thereby, as shown in FIG. 6B, at the position where the partition 4 is installed inside the housing 10, the lower end corners of the partition wall 6 and the both ends of the bottom step 16 of the housing 10 are in contact with each other. Since the contact surfaces coincide with each other on the corresponding R surfaces, when the partition 4 is installed inside the housing 10, the load applied to the bottom sealing material 82b can be gradually borne on both side sealing materials 81b. It becomes possible, the horizontal deformation of the sealing material 82b on the bottom surface can be prevented, and the sealing effect on the contact surface can be maintained.

  Further, as shown in FIG. 6A, the partition wall 6 has a narrow taper shape from the upper part to the lower part, and the inner side surface of the housing 10 corresponds to a change in the width dimension of the partition wall 6. As described above, the side surface step portion 15 inside the housing 10 is formed so as to become narrower from the upper part to the lower part.

  Therefore, in the case where the partition body 4 is installed, during the descending operation of the partition body 4, the sealing material 81 b provided on both side surfaces of the partition wall 6 is almost compressed by sliding contact with the inner surface of the housing 10. In the installation position, the sealing material 8b provided on both side surfaces and the bottom surface of the partition wall 6 contacts the inner surface of the housing 10 almost simultaneously, so that fluid leakage due to deformation of the sealing material 8b can be prevented.

  Further, as shown in FIG. 6B, when the partition 4 is installed inside the housing 10, the sealing material 8b provided on both side surfaces and the bottom surface of the partition wall 6 and the inner surface of the housing 10 are in contact with each other. After the contact, the load applied to the sealing material 82b on the bottom surface of the partition wall 6 that receives the downward pressing force can be gradually applied to the sealing material 81b on both side surfaces via the R surfaces at both ends of the bottom surface. Therefore, it is possible to prevent lateral deformation of the bottom sealing material 82b and maintain the sealing effect on the contact surface.

  In addition, since both side surfaces of the partition wall 6 are tapered in front view, the weight of the partition body 4 is the sealing material on the bottom surface of the partition wall 6 at the installation position in the housing 10 of the partition body 4. Since the pressing force is evenly applied not only to 82b but also to the sealing material 81b provided on both side surfaces and deformation of the bottom sealing material 82b can be suppressed, the sealing effect can be further increased.

  Further, as shown in FIG. 5, the contact surface on the inner surface of the housing 10 of the partition wall 6 is formed as a thick step portion slightly inward from the other inner surfaces. Compared with the case where the inner surface of the casing 10 is used as the contact surface of the sealing material 8b described above, the contact surface that contacts the both side surfaces of the partition wall 6 can be ensured only by processing the side step portion 15. Formation is simple and inexpensive.

  Moreover, since the contact surface with the partition wall in the inner side surface and inner bottom surface of the housing | casing 10 forms the side surface step part 15 and the bottom face step part 16 in the inner side of the housing | casing 10, the outer peripheral surface of the existing water pipe Within the larger casing 10, the size and shape of the partition 4 can be kept small, and the labor for installing the partition 4 can be reduced.

  In addition, the continuous water flow path forming device 2 of the present invention has a structure that is divided into upper and lower parts at a substantially central height, and a method for joining the casings 10 having the divided structure will be described below. The housing 10 has a structure in which the upper housing 11 and the lower housing 12 are joined by welding from the outer surface side. As shown in FIG. 7A, the upper housing 11 and the lower housing 12 are joined. The butt portion with the body 12 has a groove portion 18 on the outer surface.

  As shown in FIG. 7B, a part of the melted and solidified welding material is formed as a build-up portion on the inner side surface of the casing 10 by welding from the outer side surface of the casing 10. Therefore, in order to maintain the above-described sealing effect, in order to smooth the contact surface with the partition wall 6 on the inner side surface of the housing 10, the contact portion with the partition wall (polishing portion) of the build-up portion. K) is subjected to a surface treatment by polishing.

  In the case of joining by conventional welding, since there is no side step portion inside the housing, the location of contact between the partition wall and the inside surface of the housing cannot be specified, and the polishing location cannot be limited. Therefore, there is a problem that a wide surface must be polished in advance, and the casing body must be thick in order to secure a polishing margin.

  In the case of the present embodiment, only the contact surface with the partition wall 6 on the inner side surface of the housing 10 is formed on the thick side surface step portion 15, so that as shown in FIG. It is easy to specify the position of the contact point (polishing point K) with the wall, and since it is formed as a thick step on the inner surface, a polishing margin can be secured. Therefore, it is not necessary to polish a wide surface, and it is not necessary to make the casing 10 main body thick.

  Further, as shown in FIGS. 6 and 8, the guide piece 20 is provided at two positions on the inner side surface of the housing 10 in the upper and lower positions sandwiching the partition wall 6 from the front and back in a state where the partition body 4 is installed. 21, 20 ′, 21 ′ are fixed. As shown in FIG. 6A, the guide pieces 20 ′ and 21 ′ and the guide pieces 20 and 21 (not shown) guide the partition 4 while being in sliding contact with the front and back surfaces of the partition wall 6. The displacement of the contact position between the side surface of the partition wall 6 and the contact surface of the side surface step portion 15 that occurs when moving downward from the upper side toward the installation position in the housing 10 can be prevented. In this case, the installation work of the partition 4 is facilitated.

  Further, even when the contact position shifts due to the load of the fluid flowing down in the pipe at the midpoint where the partition body 4 is lowered from above, the front and back surfaces of the partition wall 6 fixed to the upper part in the housing 10 are obtained. Since the pair of guide pieces 20 and 21 are formed in an upwardly opening tapered shape, the insertion work is easy at the initial insertion of the partition wall 6, and the partition body 4 is between the pair of front and back guide pieces 20 and 21 in the upper part. The robot moves downward while correcting the initial deviation.

  In addition, a pair of front and back guide pieces 20 ′ and 21 ′ of the partition wall 6 fixed to the lower part in the housing 10 are formed to face each other substantially in parallel, and upper end portions of these guide pieces 20 ′ and 21 ′. 24, since the notch portion that is expanded upward is formed, as shown in FIG. 6 (a), the partition body 4 moves downward while being corrected for deviation toward a predetermined installation position. When continuing, the bottom end of the partition wall 6 is guided between the pair of front and back guide pieces 20 ′ and 21 ′ without contacting the upper end 24 of the lower guide piece. After the correction of the deviation, the deviation is further corrected, and the partition body 4 is accurately installed at a predetermined installation position as shown in FIG. 6B without being inclined.

  As shown in FIG. 4B, the communication port 7a is disposed in the vicinity of the cut surface 1a of the existing water pipe 1 at the position where the partition 4 is installed in the housing 10, and similarly, the communication port 7b. Is arranged in the vicinity of the side opening B ′ on the new water pipe 3 side.

  Further, the communication port 7a is formed in the same arc shape in plan view so as to match the arc shape in plan view of the cut surface 1a of the existing water pipe 1. Similarly, the shape of the communication port 7b is formed so as to match the circular arc shape in plan view of the side opening B '.

  Therefore, when the fluid in the existing pipe flows down through the communication pipe 7, the partition 4 is less likely to receive a load such as vibration near the communication ports 7a and 7b. The surface sealability can be maintained for a long time.

  A state in which the partition 4 is installed at a predetermined position inside the housing 10 is shown in FIG. 6B, and the sealing materials 8 a and 8 b provided on the side and bottom surfaces of the partition wall 6 and the peripheral surface of the upper lid 5. The side surface step portion 15, the bottom surface step portion 16, and the step portion 19 provided on the inner side surface and the inner bottom surface of the housing 10 are in close contact with each other in a watertight manner, and the flow of the fluid in the pipe is blocked by the partition wall 6.

  In this case, when the entire pipe is viewed in a plan view, as shown in FIG. 1 (c), the existing pipe of the existing water pipe 1 is blocked inside the continuous water flow path forming device 2, and the pipe blocked from the upstream is opened. It will be connected to the newly established water pipe 3 through the part B.

  Further, as shown in FIG. 9, four steady rest pins 22 are arranged on the inner surface of the housing 10 at predetermined intervals at a height position where the partition 4 is in contact with the lower surface of the upper lid portion 5. ing. Further, six fixed plug screws 23 screwed from the outer surface to the inner surface of the housing 10 are disposed at predetermined intervals at a height position where the fixing member 4 is in contact with the upper surface of the upper lid portion 5. Has been.

  At the installation position of the partition 4, six fixed plug screws 23 are screwed from the outer surface of the housing 10, so that the tip of the fixed plug screw 23 is in sliding contact with the upper surface of the upper lid portion 5. Since it approaches toward the inner center, the partition 4 can be fixed in a state where it is pressed downward.

  When uneven pressing force is applied to the lower side of the partition 4, any one of the four steady rest pins 22 having the same height position is in contact with the lower surface of the upper lid 5 and receives as a stopper. The partition body 4 can be pressed and fixed downward without applying an excessive total load to the sealing materials 8a and 8b while maintaining the horizontal direction.

  Therefore, since the sealing material 8b provided on the side surface and the bottom surface of the partition wall 6 is evenly loaded downward, water tightness can be ensured.

  Thus, even when the pipe inner surface of the communication pipe 7 facing the flowing fluid is subjected to a fluid force after the partition body 4 is installed, the steady rest pin 22 receives the fluid force particularly in the upper part of the partition body 4. The partition body 4 is fixedly held, and similarly, in the lower part of the partition body 4, the lower guide pieces 20 ′ and 21 ′ disposed at positions where the partition wall 6 is sandwiched receive the fluid force to securely fix the partition body 4. Hold.

  Further, as shown in FIG. 9, after the partition body 4 is installed, even if a load such as water pressure is applied to the inner curved surface of the communication pipe 7 facing the flowing fluid and a rotational force is generated in the partition body 4, the upper lid portion 5. Since the upper lid portion 5 is fixed and held from above and below by the fixed plug screw 23 abutted on the upper surface and the steady pin 22 in proximity to or abutted against the lower surface of the upper lid portion 5, the displacement of the partition 4 is reduced. It is restrained within the range of elastic deformation of the sealing materials 8a and 8b, and the sealing effect of the partition 4 can be maintained.

  Further, a pair of front and back guide pieces 20 ′ and 21 ′ are provided below the inner side surface of the housing 10 shown in FIG. 8 so as to sandwich the partition wall 6 shown in FIG. Since these guide pieces 20 ′ and 21 ′ receive a load such as water pressure applied to the partition wall 6, the displacement of the partition body 4 is effectively suppressed.

  Next, a continuous water flow path forming device for an existing fluid pipe according to a second embodiment will be described with reference to FIG. In addition, the same structure as the said embodiment and the overlapping structure are abbreviate | omitted.

  As shown in FIG. 13, the housing 10 ′ in this embodiment includes a side step 15, a bottom step 16, a side step 15 a, and a bottom step 16 a that are integrally formed from the inner side to the inner bottom. Two pairs are provided so as to intersect each other at substantially right angles in plan view, and guide pieces 20 and 21 and guide pieces 20a and 21a are provided on both sides of each side step.

  Therefore, since the partition 4 is formed so that it can be installed on any two steps in the casing 10 ', for example, as shown in FIG. 1 (c), the existing water pipe 1 is specified. When the casings 10 ′ and 10 ′ are installed on the upstream side and the downstream side across the area E, and the partition bodies 4 are respectively disposed, the partition bodies 4 are installed in the casings 10 ′ and 10 ′. Arrangement is possible only by changing the position.

  In other words, it is not necessary to change the arrangement specification of the stepped portion in the housing 10 'according to the direction of changing the pipeline between the existing water pipe 1 and the new water pipe 3, so it is time and effort for design and production related to the specification change. And costs are reduced.

  Further, in the present embodiment, a new flow path is formed from the existing water pipe 1 to the new water pipe 3 through the communication pipe 7 at the position where the partition 4 is installed in the housing 10 '. In 10 ', the flow in the new flow path smoothly flows down in the pipe by the side surface of the partition wall 6 and the other side surface step portion and bottom surface step portion which are not in contact with each other without being influenced by the flow.

  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 not departing from the gist of the present invention are included in the present invention. It is.

  For example, in the above embodiment, as shown in FIG. 1A, after installing the continuous water flow path forming device 2 across the specific area E of the flow path of the existing water pipe 1, the upstream continuous water flow path formation is performed. Although the existing water pipe 1 inside the apparatus 2 was cut and then the existing water pipe 1 on the downstream side was cut, the order of cutting the existing water pipe 1 may be performed from either the upstream side or the downstream side.

  Moreover, in the said Example, after cut | disconnecting the existing water pipe 1 inside the upstream and downstream infinite water flow path formation apparatus 2 on both sides of the specific area E, it partitions in the inside of the downstream continuous water flow path formation apparatus 2 The body 4 was installed, and then the partition body 4 was also installed on the upstream side. However, the order of installation of the partition body 4 may be performed from either the upstream side or the downstream side.

  Further, in the above embodiment, the side step 15 in the housing 10 is formed so as to become narrower from the top to the bottom, but the side step 15 is not formed, and The inner side surface may be formed so as to become narrower from the upper part to the lower part.

  Further, in the above embodiment, the number of the steady rest pins is four and the number of the fixing plug screws is six. However, the number is not necessarily limited to these numbers, and the purpose of fixing and holding the partition body 4 is as follows. Any number is possible as long as it can be achieved.

  In the above embodiment, the pipe fluid of the existing water pipe 1 is clean water, but the pipe fluid may be sewage or gas.

  Further, in the above embodiment, the cutting means for the existing water pipe 1 inside the continuous water flow path forming device 2 is the hollow cylindrical drilling cutter 32, but if the existing water pipe 1 can be cut, the cutting means will be drilled. The cutter 32 is not limited to this.

The upper surface of the bottom step part 16, as shown in FIG. 12, that is disposed in the downward slope toward the upstream side of the existing water pipe 1. Due to the water flow in the pipe of the existing water pipe 1 and the gradient of the upper surface of the bottom surface step portion 16 , the chips are more difficult to adhere to the upper surface of the bottom surface step portion 16 .

  Furthermore, in the said Example, as FIG. 5 showed, although joining with the upper housing | casing 11 and the lower housing | casing 12 was performed by welding, if a watertightness can be maintained, a joining method will not be restricted to welding. . For example, a flange may be provided at a joint portion of each housing, a sealing material such as rubber packing may be sandwiched between the joint surfaces, and the joints may be joined with bolts, nuts, or the like.

  Moreover, in the said Example, although the existing flow path was changed by the communicating pipe 7 which consists of a curved pipe which connects two communicating ports 7a and 7b as shown in FIG. 2 (a) and FIG. The channel changing means only needs to have a guiding curved surface that guides the fluid in the channel, and is not necessarily a curved pipe. For example, as shown in FIG. 14, the communication path 25 having no inner curved side surface portion may be used.

  In the above embodiment, the partition 4 has a structure in which the communication pipe 7 for guiding the fluid is fixed to the separate partition wall 6 as shown in FIG. It may have an integral structure from the beginning as long as the fluid is guided by blocking the pipeline. For example, the partition body is a block body provided with a sealing material on the outer peripheral surface that comes into contact with the inner surface of the housing. At least two communication ports are formed on the outer surface of the block body, and the communication body is formed inside the block body. A tunnel portion that communicates the mouth via a guiding curved surface may be formed.

  Further, in the second embodiment, the partition body 4 includes a single side step 15 and a bottom step provided with a sealing member 8b formed in the peripheral surface of the flat partition wall 6 in the housing 10 '. However, the partition wall does not necessarily have to be a flat plate if the fluid in the existing water pipe 1 can be stopped on the front and back sides of the partition wall in the casing 10 ′. For example, a sealing material is provided on the peripheral surface of the partition wall formed in a substantially right-angle shape in plan view, and comes into contact with two stepped portions provided so as to intersect in a substantially right-angle shape in plan view in the housing 10 ′. It may be possible to install at a position.

It is a top view which shows the whole image of piping which equip | installed the continuous water flow path formation apparatus to the existing water pipe 1 in 1st Embodiment of this invention, and connected the new water pipe 3 in communication. (A) is a plan view showing a state in which the continuous water channel forming device is attached to the existing water pipe 1 and the new water pipe 3 is connected in communication and the flow direction of the fluid in the pipe, and (b) is a continuous water channel. It is the top view which showed the state which cut | disconnected the existing water pipe 1 inside a formation apparatus, and the flow direction of the fluid in a pipe | tube, (c) is the partition 4 in an unrestricted water flow path formation apparatus, after cutting the existing water pipe 1 It is the top view which showed the state which installed and the flow direction of the fluid in a pipe | tube. (A) is a perspective view which shows the partition body 4 in this invention, (b) is a perspective view which shows the whole image of a continuous water flow path formation apparatus. (A) is the figure which showed the side surface and partial cross section of the partition body 4, (b) is a front view of the partition body 4. FIG. (A) is a top view which shows the whole image of a continuous water flow path formation apparatus, (b) is the top view which showed the position where the partition body 4 was similarly installed. FIG. 5 is a cross-sectional view of the housing 10 taken along the line ff showing the step portions 15 and 16 provided integrally and continuously on the inner surface and the inner bottom surface of the housing 10. (A) is the longitudinal cross-sectional view of the housing | casing 10 in the middle point in which the partition body 4 descend | falls toward the installation position from the upper direction of the housing | casing 10, (b) is the partition body 4 in an installation position. It is a longitudinal cross-sectional view of the housing | casing 10 in the installed point. It is the aa and bb expanded sectional view of Fig.4 (a) which showed the butt | matching part which joins the upper housing | casing 11 divided into upper and lower parts and the lower housing | casing 12 by welding, (a) is welding processing It is the expanded sectional view which showed the front butt | matching part, (b) is the expanded sectional view which showed the butt | matching part after welding processing, (c) It is the expanded sectional view which showed the butt | matching part after grinding | polishing process. (A) is the top view which showed the guide pieces 20, 20 ', 21, and 21' in the housing | casing 10, (b) is dd sectional drawing of (a), (c) is also c FIG. FIG. 5 is a side cross-sectional view showing a steady pin 22 at an installation position in a housing 10 of a partition body 4. It is the schematic which showed the cutter 32 for a piercing | punching which cut | disconnects the pipe | tube inside the continuous water flow path formation apparatus 2. FIG. It is the schematic which showed the insertion machine 34 which installs the partition body 4 inside the continuous water flow path formation apparatus 2. FIG. It is ee sectional drawing of FIG.6 (b) in the state in which the partition body 4 was installed in the indefinite water flow path formation apparatus 2. FIG. (A) is a perspective view which shows the whole image of the continuous water flow path formation apparatus 2 'in 2nd Embodiment of this invention, (b) is a top view of the continuous water flow path formation apparatus 2' similarly. It is the perspective view which showed the modification of the partition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Existing water pipe 1a Cut surface 2 Unbreakable water flow path formation apparatus 3 New water pipe 4 Partition 5 Upper cover part 6 Partition wall 7 Communication pipe 7a Communication port (existing water pipe side)
7b Communication port (new water pipe side)
8b Seal material (partition wall peripheral surface)
81b Sealing material (partition wall side)
82b Sealing material (bottom of partition wall)
9a Communicating tube support member 9b Bottom plate 10 Housing 11 Upper housing 12 Lower housing 15 Side step
16 bottom step (top slope)
18 Groove part 19 Step part (for upper cover part)
20 Upper guide piece (front side)
21 Upper guide piece (back side)
22 Stabilizing pin 23 Fixed plug screw 25 Communication path 32 Drilling cutter A Side opening (upstream side of existing water pipe)
B side opening (new water pipe side)
E Specific area

Claims (5)

The outer peripheral surface of the existing fluid pipe is sealed with a casing capable of securing at least three-direction flow paths, and the existing fluid pipe is cut in an indefinite water state, and a partition is installed inside the casing having at least a bottom surface and a side surface. And a continuous water flow path forming device for an existing fluid pipe that forms another flow path,
The partition body includes a partition wall that blocks at least one flow path of the fluid in the housing, and a fluid guide portion having a guiding curved surface, and a sealing material is provided on at least both side surfaces and a bottom surface of the peripheral surface of the partition wall. And at least one pair of contact surfaces on the inner side surface of the casing, on which the sealing material provided on both side surfaces of the partition wall abuts, is formed as a thick side step on the inner side surface of the casing. is Rutotomoni, the bottom surface of the housing is a installation position of the partition member, the abutment surface which the sealing member abuts watertight manner in the bottom surface of the partition wall, the bottom stage of the thickness on the bottom of the housing At least one strip is formed as a portion and is continuous with the side stepped portion, and the upper surface of the bottom stepped portion that forms a contact surface with the sealing material faces the upstream side of the existing fluid pipe. existing, characterized in that provided on the downward slope Te Constant water flow path forming apparatus body vessel.   The partition wall has a narrow taper shape from the top to the bottom, and the side stepped portion becomes thicker from the top to the bottom so as to correspond to the change in the width dimension of the partition wall. The continuous water flow path forming device for an existing fluid pipe according to claim 1, wherein   The case has a structure in which the casing has at least the two side stepped portions vertically, and the side stepped portion that is continuous in the vertical direction is formed by joining the split surfaces of the casing by welding from the outer peripheral surface side. 3. The continuous water flow path forming device for an existing fluid pipe according to claim 1 or 2, which has a structure that can be formed. A seal member integrally connected with a convex R surface on at least a bottom surface and both side surfaces of the peripheral surface of the partition wall, and the bottom surface step portion and the side surface step portion of the housing are integrally concave R surfaces. The continuous water flow path forming device for an existing fluid pipe according to any one of claims 1 to 3 , which is continuous with the above. The indefinite water flow path forming device for an existing fluid pipe according to any one of claims 1 to 4 , wherein at least two pairs of the side step portions are formed on the inner side surface of the casing.

Images