JP4615691B2 - Elbow fitting - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe joint mainly used in the plant field, and more particularly to an elbow pipe joint that can be attached with a sensor or the like.
[0002]
[Prior art]
Conventionally, a pipe joint shown in FIG. 3 is known as this type of pipe joint. That is, a general-purpose pipe joint having a branch portion 52 is used as the main body 50, and the end face of the large diameter portion of the different diameter socket 53 is joined to the end face of one receiving port 51 of the main pipe. There is known a pipe joint constituted by adhering a socket 54 provided with a hole 55 for attaching a sensor or the like to the end face of a small diameter portion.
[0003]
[Problems to be solved by the invention]
However, the configuration of the above-described pipe joint has a problem in that a special sensor having a long sensing portion is required because the mounting position of the sensor or the like and the distance to the main pipe of the pipe joint become long. In addition, when used for piping for ultrapure water , a large amount of stagnant water is generated in the branch portion, and there is a possibility that the quality of the fluid may become a problem. Moreover, in the above configuration, there is a problem in that the manufacturing cost increases because it must be manufactured manually.
[0004]
Therefore, an object of the present invention is to provide a pipe joint that can be attached with a small sensor, does not generate stagnant water, and has a reduced manufacturing cost.
[0005]
[Means for Solving the Problems]
In order to achieve such an object, according to the present invention, the other diameter expansion receiving port is at an angle of 90 degrees with respect to one diameter expansion receiving port through the elbow body, and the base end portion of one diameter expansion receiving port. Is formed integrally so that a part of the outer peripheral wall abuts a part of the outer peripheral wall of the base end of the other diameter expansion receiving port, and the radius of curvature of the inner peripheral surface of the back part of the elbow body is By setting the intersection of the two pipe shafts of the enlarged diameter receiving port as the center of the radius of curvature, the inner area of the back portion sandwiched between the two pipe shafts is a circumferential surface, and A seat is formed by integral molding with the elbow body around the position where the tube axis of one of the diameter expansion receptacles intersects with the back portion, and the seat is formed by integral molding with the elbow body. the tapered female screw towards and assumed to be threadably set through.
[0006]
(Function)
In the present invention, a part of the outer peripheral wall of the base end portion of the one enlarged diameter receiving port is the other enlarged diameter receiving port through the elbow body at an angle of 90 degrees with respect to the one enlarged diameter receiving port. It is integrally formed so as to be in contact with a part of the outer peripheral wall of the base end portion of the enlarged diameter receiving port, and the radius of curvature of the inner peripheral surface of the back portion of the elbow body is two tubes of the both enlarged diameter receiving ports. By setting the intersection of the shafts as the center of the radius of curvature, the inner area of the back portion sandwiched between the two tube shafts is a circumferential surface, and the tube of either one of the enlarged diameter receiving ports A seat that protrudes so that the end surface is flat around the position where the shaft and the back part intersect is formed by integral molding with the elbow body, and a tapered female screw penetrates the seat toward the inside of the elbow body Having in so that the threaded set by instrument such as a sensor directly in that portion can wall thickness and strength to ensure that can be attached to, a recess in conduit peripheral surface Since no Jill, standing water co the small sensor or the like is attachable does not occur. Further, since only threaded set the female screw hole integrally molded with the seat, can be reduced automation can manufacturing cost of production.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Fig.1 (a) is sectional drawing which shows one Embodiment of this invention. In FIG. 1 (a), reference numeral 10 denotes an elbow pipe joint according to the embodiment. The seat 12 is provided on the back part 112 of the elbow body 11 which has two diameter expansion receiving holes 111 for connecting pipes and is bent by 90 degrees. Here, the elbow body 11 refers to a portion excluding the diameter-enlarged receiving port 111 from the entire elbow pipe joint, and the back portion 112 refers to a wall surface on the side that is largely curved. The seat 12 is provided with a position m at which the tube axis of one of the diameter expansion receiving ports 111 intersects the back portion 112 as the center of the seat 12.
[0008]
In addition, the curvature radius R of the inner peripheral surface of the elbow body 11 in the cross-sectional view including the tube axis is made smaller than that of an elbow pipe joint that is a general general-purpose product. That is, the intersection point O in the tube axis of the two enlarged diameter socket 111 and the center of curvature radius R, 2 pieces of inner range of tube axis sandwiched by the back section 112 (m-n) a circumferential surface and It is preferable to do this. The end surface of the seat 12 is projected so as to be a flat surface, and is formed by integral molding with the elbow body 11 . The seat 12 is provided with a hole 13 that passes through the inside of the main body 11 so that an instrument such as a sensor can be attached thereto.
[0009]
Here, examples of the instrument attached to the seat 12 include a temperature sensor for sensing the temperature of the fluid in the pipe line, a component analysis sensor for identifying the fluid component, and a valve. When the valve is mounted, it can be used as a drain for the pipeline when positioned on the lower side and as an air vent when positioned on the upper side.
[0010]
The seat 12 has a flat end surface, and the height protruding from the outer peripheral surface is calculated from the strength when a device such as a sensor is attached. The outer diameter of the seat 12 is preferably 1.5 times or more the maximum inner diameter of the hole 13.
[0011]
The hole 13 is provided with a female screw when a device such as a sensor is attached with a screw. The hole 13 is preferably formed in a truncated cone shape. Since it is not necessary to provide a stopper for insertion of the tip of a plate (not shown) on which a male screw that is screwed into the female screw is formed, it is possible to match the tip of the plate with the inner peripheral surface of the main body 11. This is because no longer occurs.
[0012]
Next, a reference example will be described. FIG. 2 is a sectional view showing a reference example of the elbow pipe joint 20 . In the reference example , a branch socket 15 is provided on the seat 12 of the first embodiment. One end of the branch socket 15 is formed as a difference port 151. The end surface opposite to the differential port 151 is joined to the seat 12 of the main body 11. By doing so, it is possible to attach a new instrument or plug it at the time of the first piping, and to connect a new pipeline through the branch socket 15 when necessary after piping.
[0013]
【The invention's effect】
As described above in detail, according to the present invention, the other diameter expansion receiving port is at an angle of 90 degrees with respect to one diameter expansion receiving port through the elbow body, and the base end portion of the one diameter expansion receiving port. A part of the outer peripheral wall is integrally formed so as to come into contact with a part of the outer peripheral wall of the base end of the other enlarged diameter receiving port, and the radius of curvature of the inner peripheral surface of the back part of the elbow body is determined by By setting the intersection of the two tube axes of the diameter receiving port as the center of the radius of curvature, the inner area of the back portion sandwiched between the two tube shafts is a circumferential surface, and either A seat is formed by integral molding with the elbow body around the position where the tube axis of one of the diameter expansion ports and the back portion intersect, and the seat is formed by integral molding with the elbow body. since tapered female screw towards has to be threadably set through, wall thickness and strength that can be attached to the instrument such as a sensor directly to the portion secured That. Since the instrument can be directly attached to the seat, no concave portion is formed on the inner peripheral surface of the pipe, and when a small sensor or the like can be attached, no stagnant water is generated. Further, since only threaded set the female screw hole integrally molded with the seat, can be reduced automation can manufacturing cost of production.
[Brief description of the drawings]
FIG. 1A is a sectional view showing an embodiment of the present invention, and FIG. 1B is a bottom view thereof.
FIG. 2 is a cross-sectional view showing a reference example .
FIG. 3 is a cross-sectional view showing a conventional pipe joint.
[Explanation of symbols]
10, 20 Elbow pipe joint 11 Elbow body 111 Diameter expansion receiving port 112 Back portion 12 Seat 13 Hole 15 Branch socket 151 Port

Claims (1)

One diameter expansion receiving port is connected to the other diameter expansion receiving port through the elbow body at an angle of 90 degrees, and a part of the outer peripheral wall of the base end of one diameter expansion receiving port is the other diameter expansion receiving port. Are integrally formed so as to contact a part of the outer peripheral wall of the base end of the
The radius of curvature of the inner peripheral surface of the back portion of the elbow body is such that the back between the two pipe shafts is located at the intersection of the two pipe shafts of the two enlarged diameter receiving ports. A seat that is formed so that the inner surface of the portion is a circumferential surface, and the end surface is a flat surface around the position where the tube axis of one of the enlarged diameter receiving ports and the back portion intersect. Is formed by integral molding with the elbow body,
Elbow joints tapering internal thread in the seat towards the inside elbow body, characterized in that it is threaded set to penetrate.

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