KR0116879Y1 - Insulating unionnut - Google Patents

Abstract

This design prevents current flow by the union nut used when connecting gas pipes or gas pipes and gas meters when electricity generated by sources such as static electricity or leakage of gas pipes buried beneath the ground of a building. The present invention relates to an insulation unit for gas piping designed to avoid the risk of gas explosion. The through-hole 15 and the locking jaw 16 are formed on the inner circumferential surface of the hexagonal inner hole 11 of the metal hexagon outer shell 10 forming the union nut. And the insulator 14 is formed so that the screw hole 17 is formed at the center portion thereof, and the insulator 14 is formed on the central portion thereof. It is to be able to perform the insulation function at the same time as the union nut function by being prevented from being separated and rotated by being caught by.

Description

Insulated Union Nuts for Gas Piping

1 is a schematic view showing a conventional gas pipe insulation structure.

(A), (b) of FIG. 2 is a partially cutaway perspective view and a longitudinal cross-sectional view of the insulating union nut of this invention.

(A) and (b) of FIG. 3 are front and rear perspective views of the metal hexagonal outline used in the present article.

Figure 3a is a cross-sectional view showing a state that the present invention is manufactured to be insulated.

4 is a cut-away view showing the state of use of the present article.

＊ Explanation of symbols for main parts of drawing

10: metal hexagon outer body 11: hexagonal inner hole

12: departure prevention stone 13: groove

14 insulator 15 through hole

16: locking jaw 17: screw hole

The present invention relates to a union nut used to connect gas pipes, and in particular, it is not known that electricity generated due to causes such as static electricity or leakage of gas pipes buried beneath the ground of a building flows along the granular gas pipes to indoor gas pipes. The present invention relates to an insulating union nut for gas piping designed to be blocked.

Conventionally, the current interruption flowing along the gas pipe is provided with an insulation joint 4 in the middle of the gas pipe 1 to which the gas meter 1 or the gas valve 2 is connected as shown in FIG. By preventing the current flowing into the indoor gas pipe, the risk of indoor gas explosion is prevented in advance, but this current blocking method requires additional installation of a relatively expensive insulation joint (4) manufactured separately to insulate the insulator. In addition to the increase in material purchase costs, the inefficiency of the piping work caused a problem that caused a rise in labor costs.

Therefore, as a result of studying how to cut off the current without installing the insulation joint (4), the union that is insulated from the connection between the gas pipes or the connection between the gas meter and the gas pipe must be used. This led to the development of the nut.

The main purpose of this paper is to prevent the explosion risk by providing the union nut for the gas pipe to be insulated so that the current flowing along the gas pipe can be cut off, and the other purpose is that the insulator formed integrally with the union nut To provide a union nut for gas piping having an insulating structure that does not deviate or rotate during piping work, another object is to provide a gas pipe insulation parts that can be manufactured at a low cost to insulate among the gas piping components used ( By providing union nuts, the company aims to reduce material costs and improve piping efficiency.

In order to achieve the above object, the present invention is made of metal material to form an insulator so that a screw hole, a through hole, and a locking jaw are formed in a hexagonal outer body inner hole forming a union nut so that the insulator is formed on the inner body hole. As it is to be made of a structure that does not rotate and deviate, it will be described in more detail based on the accompanying drawings, as follows.

In this proposal, the hexagonal metal hexagonal body 10 forms a hexagonal shape as a metal material, and before and after the hexagonal inner hole 11 formed therein, the separation preventing protrusions 12 and the recesses 13 are formed, respectively. The inner circumferential surface of the hexagonal inner hole 11 is formed so that the entire surface of the inner circumferential surface is covered with the insulator 14, but the through hole 15, the locking jaw 16, and the screw hole 17 are formed in the insulator 14, respectively. .

In the drawings, reference numeral 1a denotes a meta group connecting screw part, 5 is a building, 6 is a connecting pipe, 7 is a gas pipe, 8 is a packing, 20, 20 'is a mold, 21 is an injection hole, and 22 is a spiral core.

In this way, this proposal is composed of a hexagonal inner hole 11 inside the metal hexagon outer body 10 and a separation preventing protrusion 12 and grooves in the front and rear portions thereof, as shown in (a) and (b) of FIG. 3. (13) is formed to be formed so that the insulator 14 is thickly adhered to the inner circumferential surface of the hexagonal inner hole 11 by the mold 20, 20 ', as shown in Figure 3c, wherein the spiral core ( 22 is formed such that the through-hole 15, the locking jaw 16 and the screw hole 17 are formed in the insulator 14, and the spiral core 22 is rotated as shown in the imaginary line after the molding is completed. By moving, the spiral state of the screw hole 17 is not broken and is formed precisely.

Therefore, the subject matter of the present invention is that the through hole 15, the locking jaw portion 16, and the screw hole 17 are formed in the insulator 14, so that the connection pipe 6 is formed as the through hole 15 as shown in FIG. Is penetrated and the locking jaw portion 16 is engaged with the flange 6a of the connecting pipe 6, and the screw hole 17 has a structure in which the meta group connecting screw portion 1a can be fastened. Since the connecting pipe 6 and the meta group connecting screw portion 1a to which the gas pipe 7 is connected do not contact the metal hexagon outer shell 10 of the union nut, only the insulator 14 is connected and connected thereto. The insulator 14 itself is insulated from each other by electricity.

In addition, since the union nut is rotated for the connection, the insulator 14 is bonded within the hexagonal inner hole 11 of the metal hexagon outer body 10 to be integrally coupled even when a circumferential external force is applied to the insulator 14. Since the metal hexagon shell 10 is separated from the metal hexagon outer body 10 and not rotated (rotated), it is fastened, and the insulator 14 is caught by the separation preventing protrusion 12 and the recess 13. The insulator 14 is not separated in the front-back direction of the outer body 10.

As described in the above description, since the union nut has an insulation function, it is used for the connection between the gas meter 1 and the gas pipe 3 during gas piping work, or as it is used for the connection between the gas pipes 3, Not only can it block the flow of the insulator, but also the insulator 14 can not be rotated or dislodged, so that it can faithfully perform its function as a union nut. It is a useful design that can achieve the effect of reducing the material cost and improving the work efficiency.

Claims (1)

In the hexagonal shape having a through hole 15, a locking jaw portion 16 and a screw hole 17 in the center, before and after the hexagonal inner hole 11 formed in the metal hexagon outer body 10, The separation preventing protrusion piece 12 and the groove 13 are formed so that the entire inner circumferential surface of the hexagonal inner hole 11 is covered with the insulator 14 so as to be thickly coated, but the well-known through-hole 15 is caught inside the insulator 14. Insulation union nut for gas piping, characterized in that the jaw portion 16 and the screw hole 17 is configured to be formed respectively.