JP5129912B2 - Vertical pipe connection method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vertical pipe connection structure that connects a lower end of an upper vertical pipe to an upper end of a lower vertical pipe disposed below to form a pipe line, and particularly relates to a vertical bottom made of a large-diameter resin concrete. The present invention relates to a vertical pipe connecting method that is preferably applied when a water pipe is laid in a human hole.
[0002]
[Prior art]
Conventionally, when installing a large-diameter resin concrete (FRPM) vertical sewage pipe in a human hole, the vertical pipe disposed below and the vertical sewage pipe disposed above are stacked at both ends. The portion is a tube receiving port, and is connected to the inside of the central portion through a cylindrical joint in which a ring-shaped flange capable of simultaneously contacting both the end face of the upper end and the end face of the lower end protrudes.
[0003]
Usually, large-diameter FRPM pipes are heavy, and when they are stacked to form a vertical pipe, the upper pipe is suspended with a wire or the like, and is placed along a guide rail or the like provided on the inner wall of the human hole. Is lowered and inserted into the pipe receptacle of the joint waiting below.
[0004]
In this case, a water stop ring is provided on the outer peripheral surface of each pipe end of the lower vertical pipe and the upper vertical pipe or / and the inner peripheral surface of the joint pipe receiving port for water stop. Due to the tube swinging or mounting error of the vertical pipe mounting bracket that is pre-installed on the inner wall of the human hole, the pipe axes of the upper vertical pipe and the lower vertical pipe are installed in a zigzag manner. , There was a problem that the water stoppage deteriorated at that point.
[0005]
That is, since the water stop is performed by a water stop ring provided between the side wall surfaces of the pipe and the joint, the pipe outlet should be inclined into the pipe receiving opening of the joint. Even if it descends, it will be fixed as if the tube was crushed.
[0006]
[Problems to be solved by the invention]
In the present invention, particularly when a large-diameter FRPM vertical sewage pipe is installed in a human hole, the pipe axes of the upper vertical pipe and the lower vertical pipe are bent and installed in a zigzag manner. This was made for the purpose of providing a vertical pipe connecting method that is excellent in water-stopping properties.
[0007]
[Means for Solving the Problems]
The vertical pipe connection method of the present invention for solving the above-described problems is a vertical pipe connection in which a lower end of an upper vertical pipe is connected to an upper end of a lower vertical pipe disposed below to form a pipe line. A ring-shaped method in which both end portions are tube receiving openings having substantially the same size as the outer diameter of the vertical tube, and can be brought into contact with either the end surface of the upper end portion or the end surface of the lower end portion inside the center portion. Attaching a water stop ring to the lower surface of the flange of the cylindrical joint with the flange projecting, and inserting one pipe receiving port of the joint into the upper end of the lower vertical pipe, And abutting the pipe end surface with a water stop ring attached to the lower surface of the flange of the joint,
The joint is made of any one of thermoplastic resin, fiber reinforced thermosetting synthetic resin, resin concrete,
By pushing the upper vertical pipe downward, the heel is compressed and deformed by the end face of the lower end of the upper vertical pipe and the end face of the upper end of the lower vertical pipe, and the water-stop ring attached to the heel is lowered vertically. It is characterized by being compressed and deformed by the end face of the upper end portion of the tube and the ridge.
[0008]
The cylindrical joint is a joint in which a groove is provided along the circumferential direction at the center of at least one of the upper surface and the lower surface of the flange, and the upper end pipe end surface of the lower vertical pipe or the lower end of the upper vertical pipe A water stop ring that fits into the groove is attached to at least one of the pipe end faces, the lower pipe receiving port of the joint is inserted into the upper end of the lower vertical pipe, and the upper vertical pipe is located above the joint. The water stop ring may be fitted into the concave groove by being inserted into the pipe receiving port and pushing the upper vertical pipe downward.
[0009]
The joint body only needs to have a strength as a joint for connecting pipes having a large diameter and a large weight and excellent corrosion resistance. For example, thermoplastic synthetic resin, fiber reinforced thermosetting synthesis Resin (FRP), resin concrete (FRPM), etc. are mentioned.
[0010]
In any of the inventions, the inlet diameter of the pipe receiving port of the joint is substantially the same as the outer diameter of the vertical pipe and is slightly increased. However, it is desirable that the depth is as large as the outer diameter of the tube as much as possible. In this way, when the pipe end is inserted into the joint receptacle, it is easy to insert even if there is some vibration in the vertical pipe. This is because it coincides with the pipe axis of the joint and there is almost no risk of zigzag. Further, in order to facilitate the insertion of the vertical pipe, the pipe receiving port of the joint may have a tapered shape in which a part thereof is slightly expanded in diameter toward the end portion.
[0011]
The kite is not particularly limited as long as it has strength that does not buckle and is excellent in corrosion resistance even if it is deformed in response to the weight of the vertical tube stacked above it. For example, thermoplastic synthetic resin, fiber, etc. Examples thereof include synthetic resins such as reinforced thermosetting synthetic resin (FRP) and resin concrete (FRPM); metals such as stainless steel and aluminum; and elastic bodies such as natural rubber, synthetic rubber and water-absorbing rubber.
[0012]
The water stop ring is deformed in response to the weight of the vertical pipes stacked above, but it is not particularly limited as long as it is made of a material that can withstand the weight and keep the water stop, but for example, Elastic resins such as polyethylene, polypropylene and nylon; Flexible synthetic resins such as fiber reinforced thermoplastic elastic resin and fiber reinforced thermosetting elastic resin; Elastic bodies such as natural rubber, synthetic rubber and water absorbing rubber; Copper, Metals such as brass, aluminum, and stainless steel, and those obtained by elastically processing them; composite materials using the above materials in combination. Further, the cross-sectional shape is not limited, and a water-stop ring having a normal circular cross-section, an elliptical shape, or other shapes may be used.
[0013]
In the case of using the water stop ring, collar but it may also have been the material of a hard, such as the same material or metal fitting body. For reference, when waterstop ring is not used, elastically processed metals such as stainless steel and aluminum; elastic materials such as natural rubber, synthetic rubber and water-absorbing rubber are used. is Ru.
[0014]
The width of the flange on the material and the weight of the vertical tubes of the tube, but only needs to be determined by appropriately selecting the cumulative weight or the like, usually substantially be the same as or slightly smaller and the tube thickness of the vertical tube. That is, as described above, when the ridge is deformed in response to the weight of the vertically stacked vertical pipe, it is desirable that a part of the deformed ridge does not protrude in the inner peripheral direction of the vertical pipe.
[0015]
It is desirable that the diameter of the water stop ring is set so as not to protrude in the inner peripheral direction of the vertical pipe when deformed in response to the weight of the vertical pipe stacked above.
[0016]
The water stop ring is provided on both surfaces or at least one surface of the ridge.
[0017]
A concave groove may be provided along the circumferential direction in the central portion of at least one of the upper surface and the lower surface of the ridge. At least one of the upper end pipe end surface of the lower vertical pipe or the lower end pipe end face of the upper vertical pipe is fitted with a water stop ring that fits into the groove, and the lower pipe receiving port of the joint is attached to the upper end portion of the lower vertical pipe. Is inserted, the upper vertical pipe is inserted into the upper pipe receiving port of the joint, and the upper vertical pipe is pushed downward so that the water stop ring is fitted into the concave groove.
[0018]
In this case, the heel may be a hard material or an elastic material, but the water stop ring is preferably a material having elasticity such as natural rubber, synthetic rubber, water-absorbing rubber, etc. It may be attached to only one side or both sides.
[0019]
(Function)
In the present invention, the upper vertical pipe and the lower vertical pipe are connected via a joint, and the water stop between the joint and the upper or lower vertical pipe is attached to the ridge or ridge surface protruding from the inner peripheral surface of the joint. Since the water stop ring is compressed by compressing the pipe end face of each vertical pipe, reliable water stop is possible. In addition, since there is no water stop ring on the pipe side of the connection part, the pipe and the joint are less likely to be fixed in a state of being twisted, and the inner diameter of the joint pipe receiving port is made substantially the same as the outer diameter of the vertical pipe. When the pipe ends of the vertical pipes are inserted into the pipe receptacles of the joints, the pipe axes almost coincide with each other. Therefore, the upper and lower vertical pipes do not zigzag.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described with reference to the drawings. FIG. 1 to FIG. 6 are half sectional views showing an example of the embodiment of the present invention.
[0021]
In FIG. 1, a flange 11 protrudes from the central inner peripheral surface of the cylindrical joint 10 made of FRPM, both joint end portions serve as pipe receiving ports 121 and 122, and the lower vertical pipe 21 is connected to the lower pipe receiving port (121). The upper end is inserted, and the lower end of the upper vertical pipe 22 is inserted into the upper pipe receiving port (122).
[0022]
The upper and lower surfaces of the eaves 11 can be brought into contact with any one of the upper and lower vertical pipes 21 and 22 without any gap, and a water stop ring (upper water stop ring 132 in FIG. 1) is provided on one surface thereof. It is installed. Mounting water cutoff ring is not limited to this example, it is mounted only on the other surface as shown in FIG. 2, also have good optionally be mounted on either side of the plane as shown in FIG.
[0023]
The flange 11 is formed at the same time as the joint 10 is manufactured and is integrated with the joint 10 . As a reference example of a different material , when the water stop ring is not used as shown in FIG. 4, the flange 11 itself is made of an elastic body such as rubber and fixed to a predetermined position in the joint 10. good. Further, at this time, the convex ridge 111 provided along the circumferential direction at its center to the upper and lower surfaces of the collar 11, which Ru is substituted for the water stop ring.
[0024]
As the water stop rings 131 and 132, a general object having a circular cross section is often used, but the cross section may be an ellipse, a rectangle, a trapezoid, or other shapes. Regardless of the shape, the water stop rings 131 and 132 and the flange 11 or the pipe end surfaces of the upper or lower vertical pipes 21 and 22 are in uniform contact with each other over the entire length of the water stop rings 131 and 132. It is necessary to be. As described above, the upper and lower side surfaces of the eaves 11 are made to uniformly contact the pipe end surfaces of the upper and lower vertical pipes 21 and 22, respectively, so that the water stop rings 131 and 132 are not evenly contacted. This is because the pipe axis of the joint 101 and the pipe axes of the vertical pipes 21 and 22 are shifted.
[0025]
When the upper vertical pipe 22 is pushed downward, the gutter 11 and the water stop rings 131 and 132 are deformed by receiving a compressive force and express water stop performance. By being compressed, both the eaves 11 and the water stop rings 131 and 132 are deformed so as to protrude in the inner side of the pipe, but it is not desirable to protrude into the pipe so that the inner peripheral surface of the pipe is not smooth. Therefore, no protrusion or protrusion amount must be minimized.
[0026]
Accordingly, the inner diameters of the eaves 11 and the water stop rings 131 and 132 are the respective materials, the total weight of the vertical pipes stacked above, the amount of water such as sewage flowing down the vertical pipe, the surface pressure of the pipe end face of the vertical pipe, Taking into account the cross-sectional shape of the ring and the like, the amount of deformation may be estimated individually, and may be selected and determined as appropriate according to the site.
[0027]
FIG. 5 is a cross-sectional view of an example in which concave grooves 113 and 114 into which the water stop rings 131 and 132 can be fitted along the circumferential direction are provided in the central portion of the flange 11. In this case, when the upper vertical pipe 22 is pushed downward, the water stop rings 131 and 132 are pushed into the concave grooves 113 and 114, so that the water stop is completed and the water stop rings 131 and 132 are deformed. However, since the position does not shift, the tube axis does not shift. However, it goes without saying that the concave grooves 113 and 114 must have a shape and size that can completely store the deformed water stop rings 131 and 132.
[0028]
Further, the material of the ridge 11 in this case may be a hard material or a material having elasticity. However, when the ridge 11 itself is deformed, the deformed portion is a pipe line. As described above, it must be prevented from protruding inward.
[0029]
The concave grooves 113 and 114 into which the water stop rings 131 and 132 can be fitted may be provided on both upper and lower surfaces of the flange 11, or may be provided on only one surface of the flange 11, or provided only on one surface. The water stop ring may or may not be used on the opposite surface. Needless to say, when the water stop ring is not used, the flange portion 11 must be made of an elastic material. In addition, when the ditch | groove is provided as mentioned above except having illustrated in FIG. 5, since the structure of the water stop and connection can be easily guessed from FIG. 5, it is not illustrated.
[0030]
As shown in the case of the upper pipe receiving port 122 in FIG. 6, the pipe receiving ports 121 and 122 of the joint 10 have a tapered surface 1221 whose diameter is slightly enlarged in the vicinity of the inlet. Also good. In this case, the pipe end of the upper vertical pipe 22 is easy to be inserted along the inlet tapered surface 1221 of the pipe receiving port 122 of the joint and is not tapered after the insertion. The axis does not shift.
[0031]
【Effect of the invention】
As described above, the pipe connection method in the vertical direction of the present invention is particularly suitable for the case where a large-diameter FRPM vertical sewage pipe is installed in a human hole. The pipe shafts are not bent and installed in a zigzag manner, and the pipe connection method in the vertical direction is excellent in waterstop.
[Brief description of the drawings]
FIG. 1 is a half sectional view showing a reference example in which a water stop ring is attached only between an upper vertical pipe and a ridge.
FIG. 2 is a half sectional view showing an example in which a water stop ring is mounted only between a lower vertical pipe and a ridge.
FIG. 3 is a half sectional view showing an example in which a water stop ring is mounted between an upper vertical pipe and a ridge and between a lower vertical pipe and a ridge.
FIG. 4 is a half sectional view showing a reference example in which a water stop ring is not attached.
FIG. 5 is a half cross-sectional view of an example in which a concave groove in which a water stop ring can be fitted along the circumferential direction is provided at the center of the heel.
FIG. 6 is a cross-sectional view showing a part of an example of the structure of a joint pipe receiving port.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Cylindrical joint 11 １１１ 111 鍔 Lower convex 鍔 112 鍔 Upper convex 畦 113 鍔 Lower concave groove 114 鍔 Upper concave groove 121 Lower pipe receiving port 122 Upper pipe receiving port 1221 Tapered surface 131 Lower water stopping ring 132 Upper water stopping ring 21 Lower vertical pipe 22 Upper vertical pipe

Claims (2)

A pipe connection method in the vertical direction in which a lower end of an upper vertical pipe is connected to an upper end of a lower vertical pipe disposed below to form a pipe line, and both ends are substantially the same as the outer diameter of the vertical pipe. A water stop ring on the bottom surface of a cylindrical joint collar in which a ring-shaped collar that can be brought into contact with either the end face of the upper end or the end face of the lower end is protruded inside the central portion. And inserting one pipe receiving port of the joint into the upper end of the lower vertical pipe, and bringing the pipe end surface of the upper end of the lower vertical pipe into contact with the water stop ring attached to the lower surface of the joint flange And having a process
The joint is made of any one of thermoplastic resin, fiber reinforced thermosetting synthetic resin, resin concrete,
By pushing the upper vertical pipe downward, the heel is compressed and deformed by the end face of the lower end of the upper vertical pipe and the end face of the upper end of the lower vertical pipe, and the water-stop ring attached to the heel is lowered vertically. A pipe connecting method in a vertical direction, wherein the pipe is deformed by being compressed by an end face of an upper end portion of the pipe and a ridge.   The cylindrical joint is a joint in which a groove is provided along the circumferential direction at the center of at least one of the upper surface and the lower surface of the flange, and the upper end pipe end surface of the lower vertical pipe or the lower end of the upper vertical pipe A water stop ring that fits into the groove is attached to at least one of the pipe end faces, the lower pipe receiving port of the joint is inserted into the upper end of the lower vertical pipe, and the lower end of the upper vertical pipe is connected to the lower end of the upper vertical pipe. The vertical pipe connecting method according to claim 1, wherein the water stop ring is inserted into the concave groove by being inserted into the upper pipe receiving port of the joint and pushing the upper vertical pipe downward.

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