FLEXIBLE GAS HOSE

Abstract

This utility model relates to gas equipment, specifically flexible hoses for connecting gas equipment. The technical result of this utility model is to expand the range of means for connecting gas equipment that provide electrical isolation, and to simplify the design.The stated problem is solved due to the fact that the proposed flexible gas supply line comprises a fitting having a proximal and distal ends, made of a material that is non-conductive of electrical current; sealing rings; a tubular metal end piece having a distal end and a proximal end, provided with annular grooves for the sealing rings and a groove for a retaining ring, installed inside a sleeve and sealed relative to it (the sleeve) by means of sealing rings with the possibility of rotation; a retaining ring, the outer part of which is located in the groove of the sleeve, and the inner part - in the groove of the end piece, such that the retaining ring fixes the sleeve on the end piece; a metal hose connected to the said distal end of the end piece. Moreover, the aforementioned end piece is made of metal.The aforementioned end piece is provided with at least two annular grooves and at least two sealing rings installed in said grooves. The aforementioned end of the hose is connected to the aforementioned end piece by welding or soldering. The outer surface of the aforementioned proximal end of the first portion of the fitting is provided with facets for turning with a key.

Description

[0001] FIELD OF TECHNOLOGY TO WHICH THE UTILITY MODEL BELONGS

[0002] The utility model relates to the field of gas equipment, or more precisely, to flexible piping for connecting gas equipment.

[0003] STATE OF THE ART

[0004] A large number of sources are known from which flexible metal hoses for gas and / or other fluid media that provide an electrical break are known (CN 213685646 U, CN 113639109 A, CN 215293967 U, CN 105090648 A, CN 204879203 U, RU 2272212 C1, NL 7603410 A, DE 3147595 A1, EP 2085676 A1).

[0005] These well-known devices are used, among other things, to prevent corrosion that occurs when metals come into contact with aggressive liquids.

[0006] From the Russian Federation patent for utility model No. 217025, a flexible gas supply line is known, comprising a tubular metal end piece, having an outer surface provided with annular grooves for sealing rings and for a locking ring, a metal hose having an end provided with the said end piece; fittings, each of which has a proximal end and a distal end with a thread, made with the possibility of a threaded connection; the said proximal end of the fitting contains a metal outer part and, at least partially, a metal sleeve placed inside it, separated from the said outer part by means of a dielectric layer, wherein the said metal sleeve has a groove on its inner surface for the said locking ring; in which the said fitting is fixed on the said end piece by means of the said locking ring with the possibility of rotation and is sealed by means of sealing rings.

[0007] DISCLOSURE OF UTILITY MODEL

[0008] The objective of this utility model is to create a device that solves the same problems as its closest analogue by using different design techniques and possessing, in particular, a combination of the following qualities:

[0009] providing electrical break (which prevents the hose from being burned by electrical sparks and arcs, which can lead to gas leakage);

[0010] ensuring the ability to relatively freely rotate the connected products (which eliminates the possibility of twisting the hose, which can lead to its destruction).

[0011] The technical result of the utility model consists in expanding the arsenal of means for connecting gas equipment that provide electrical disconnection, and simplifying the design.

[0012] The stated problem is solved due to the fact that the proposed flexible gas supply line comprises a fitting having a proximal and distal ends, made of a material that is non-conductive of electrical current; sealing rings; a tubular metal end piece having a distal end and a proximal end, provided with annular grooves for the sealing rings and a groove for a retaining ring, installed inside the sleeve and sealed relative to it (the sleeve) by means of sealing rings with the possibility of rotation; a retaining ring, the outer part of which is located in the groove of the sleeve, and the inner part is in the groove of the end piece, so that the retaining ring fixes the sleeve on the end piece; a metal hose connected to the said distal end of the end piece. Moreover, the aforementioned end piece is made of metal.The aforementioned end piece is provided with at least two annular grooves and at least two sealing rings installed in said grooves. The aforementioned end of the hose is connected to the aforementioned end piece by welding or soldering. The outer surface of the aforementioned proximal end of the first portion of the fitting is provided with facets for turning with a key.

[0013] It is necessary to understand that in this text the device is characterized only by those features that are sufficient to solve the stated problem, realize the purpose and achieve the selected technical result; a special mention of all features and utilitarian characteristics of the device without exception is not required if specialists should know that products of the same kind possess such features and utilitarian characteristics and without them the main purpose cannot be realized; moreover, it is not necessary to limit generalized features to any specific variants if such should be known to specialists and (or) can be selected according to known rules.

[0014] IMPLEMENTATION OF A UTILITY MODEL

[0015] The claimed utility model is illustrated by the drawing: Fig. 1 - section of the fitting.

[0016] The declared flexible gas supply contains:

[0017] a fitting having proximal and distal ends, made of a non-conductive material; sealing rings;

[0018] a tubular metal end piece having a distal end and a proximal end provided with annular grooves for sealing rings and a groove for a retaining ring, installed inside a sleeve and sealed relative to it (the sleeve) by means of sealing rings with the possibility of rotation;

[0019] A retaining ring, the outer part of which is located in the groove of the sleeve, and the inner part of which is located in the groove of the end piece, so that the retaining ring fixes the sleeve on the end piece;

[0020] a metal hose connected to the said distal end of the tip.

[0021] The aforementioned end piece is made of metal. The aforementioned end piece is provided with at least two annular grooves and at least two sealing rings installed in the aforementioned grooves. The aforementioned end of the hose is connected to the aforementioned end piece by welding or soldering. The outer surface of the aforementioned proximal end of the first part of the fitting is provided with flats for turning with a key.

[0022] The proposed connection can be used to connect gas equipment, for example, to a gas pipeline.

[0023] This ensures an electrical break, which prevents the hose from being burned by electrical sparks and arcs in the event of a gas equipment malfunction or electrical breakdowns on the body of the gas appliances.

[0024] Also, the fact that the fitting at one end of the hose can rotate prevents the hose from twisting, which can lead to damage or increased hydraulic resistance. This type of twisting often occurs due to improper installation or when moving connected equipment, if the hose doesn't bend in one plane.

[0025] The device has a non-disassemblable design to ensure safe use.

Claims

1. Flexible gas supply line containing: a fitting having proximal and distal ends; sealing rings; a tubular metal end piece having a distal end and a proximal end provided with annular grooves for sealing rings and a groove for a retaining ring, installed inside a sleeve and sealed relative to it (the sleeve) by means of sealing rings with the possibility of rotation; a retaining ring, the outer part of which is located in the groove of the sleeve, and the inner part is located in the groove of the end piece, so that the retaining ring fixes the sleeve on the end piece; a metal hose connected to the said distal end of the end piece; characterized in that the fitting is made of a material that does not conduct electrical current.

2. The device according to claim 1, wherein the above-mentioned end switch is made of metal.

3. The device according to claim 1, wherein the above-mentioned end piece is provided with at least two annular grooves and at least two sealing rings installed in the above-mentioned grooves.

4. The device according to claim 1, wherein said end of the hose is connected to said end piece by welding or soldering.

5. The device according to claim 1, in which the outer surface of said proximal end of the first part of the fitting is provided with edges for turning with a key.

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