JP2002106776A - Elbow pipe joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe joint capable of installing a small sensor and preventing generation of retained water at a reduced producing cost. SOLUTION: A seat protruding in a manner to have a plane surface end is formed by integrally molding with a main body at a position on a back part of the main body to which a pipe axis of one of sockets is extended. A hole penetrating into the main body is provided on the seat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint mainly used in the field of plants, and more particularly to an elbow pipe joint capable of mounting a sensor or the like.

[0002]

2. Description of the Related Art Conventionally, a pipe joint of this type is shown in FIG.
The following are known. 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 socket 53 is joined to the end face of one of the receiving ports 51 of the main pipe. A hole 55 for mounting a sensor or the like at the end on the end face of the small diameter portion.
There is known a pipe joint formed by bonding a socket 54 provided with a pipe.

[0003]

However, the structure of the above-mentioned pipe joint has a problem that the distance between the mounting position of the sensor and the like and the main pipe of the pipe joint is long, and a special sensor having a long sensing portion is required. Was. In addition, when used for ultrapure piping, a large amount of stagnant water is generated in the branch portion, and there is a possibility that deterioration of the fluid may become a problem. In addition, in the above configuration, since it has to be manufactured manually,
There is a problem that the manufacturing cost increases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pipe joint to which a small sensor can be attached, no water is generated, and the production cost is reduced.

[0005]

In order to achieve the above object, according to the present invention, an end face is flat at the back of the main body, at a position where the tube axis of one of the receiving ports is extended. The protruding seat is formed by integral molding with the main body,
The seat is provided with a hole penetrating the inside of the main body.

(Operation) In the present invention, the seat is formed by integral molding with the main body, so that the thickness and strength can be secured so that an instrument such as a sensor can be directly attached to that portion.
Since no concave portion is formed on the inner peripheral surface of the conduit, no water is generated when a small sensor or the like can be attached. In addition, since only holes are formed in the integrated molding and the seat, production can be automated and manufacturing costs can be reduced.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a sectional view showing an embodiment of the present invention. In FIG. 1A, reference numeral 10 denotes a pipe joint according to the embodiment. A seat 12 is provided at the back 112 of the main body 11 having two pipe connection ports 111 and bent at 90 degrees.
Is provided. Here, the main body 11 refers to a portion excluding the pipe connection port 111 from the entire pipe joint, and the back portion 112 refers to a largely curved wall surface. The seat 12 is provided with a position m where the pipe axis of one of the pipe connection ports 111 intersects the back 112 as the center of the seat 12.

The radius R of the curved surface of the inner peripheral surface of the main body 11 in a sectional view including the pipe axis is smaller than that of an elbow pipe joint which is a general-purpose product. That is, the intersection point O of the pipe axes of the two pipe connection ports 111 is set as the center of the radius R of the curved surface, and the area (mn) inside the back portion 112 sandwiched between the two pipe axes is set as the curved surface. preferable. The end face of the seat 12 is projected so as to be flat, and is formed integrally with the main body. Seat 12
Is provided with a hole 13 penetrating inside the main body 11 so that an instrument such as a sensor can be attached thereto.

Here, the instruments attached to the seat 13 include:
In addition to a temperature sensor for sensing the temperature of the fluid in the pipeline, a component analysis sensor for identifying a fluid component, and the like, there are valves and the like.
When the valve is mounted, it can be used as a drain for the pipeline when it is located on the lower side, and as an air vent when it is located on the upper side.

The seat 12 has a flat end surface, and the height protruding from the outer peripheral surface is calculated from the strength when an instrument such as a sensor is attached. The outer diameter of the seat 12 is preferably at least 1.5 times the maximum inner diameter of the hole 13.

The hole 13 is provided with a female screw when an instrument such as a sensor is attached with a screw. Preferably, the hole 13 is formed in a truncated cone shape. There is no need to provide a stopper for the insertion of the tip of a plate (not shown) in which a male screw is screwed to the female screw, and the tip of the plate and the inner peripheral surface of the main body 11 can be made to coincide with each other. Is not generated at all.

Next, a second embodiment will be described.
FIG. 2 is a sectional view showing a second embodiment of the present invention. In the second embodiment, 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 port 151. The end face opposite to the spout 151 is joined to the seat 12 of the main body 11. By doing so, the instrument is attached or plugged at the time of the first piping, and if necessary after the piping, the branch socket 1
5, a new pipeline can be connected.

[0013]

As described in detail above, according to the present invention, the seat is formed integrally with the main body, so that the thickness and the strength enabling the attachment of an instrument such as a sensor directly to that portion are provided. Can be secured. Since the instrument can be directly attached to the seat, no recess is formed on the inner peripheral surface of the pipeline, and no stagnant water is generated when a small sensor or the like can be attached. In addition, since only holes are formed in the integrated molding and the seat, production can be automated and manufacturing costs can be reduced.

[Brief description of the drawings]

FIG. 1A is a cross-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 another embodiment of the present invention.

FIG. 3 is a sectional view showing a conventional pipe joint.

[Description of Signs] 10, 20 Pipe joint 11 Main body 111 Pipe connection port 112 Back part 12 Seat 13 Hole 15 Branch socket 151 Spout

Claims (1)

[Claims] 1. A seat, which is formed integrally with a main body, is formed on a back portion of the main body at a position intersecting with a pipe axis of one of the receiving ports so that an end surface thereof becomes flat. Is an elbow fitting characterized by having a hole penetrating inside the body.