Natural gas conveying anti-explosion metal hose

A technology for metal hoses and natural gas pipes, applied in the direction of hoses, pipes/pipe joints/fittings, pipes, etc., can solve the problems of low strength and high flow rate of metal hoses, achieve frictional static suppression, prolong service life, reduce Effect of Minor Accident Rate

Pending Publication Date: 2020-11-17

兰州天亿石化设备维修技术有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0004] The invention provides an explosion-proof metal hose for natural gas pipeline transportati...

Method used

[0036] In the whole, the steel strip 7 adopts a superimposed design to set three or more layers. In this embodiment, a three-layer structure is adopted, as shown in FIG. 8, which is divided into a bottom layer, an intermediate layer and a surface layer. The gaps between the three layers are misplaced to achieve the effects of explosion protection and buffering leakage. The buffering effect is shown in Figure 9.

[0043] In order to make the metal hose 5 high-strength and high pressure resis...

Abstract

The invention relates to the field of metal hoses, in particular to a natural gas conveying anti-explosion metal hose, and aims to solve the problems that an existing metal hose is low in strength andhigh in flow speed. The natural gas conveying anti-explosion metal hose comprises a metal hose body, wherein a fixing set of a flange and a loose flange is arranged on one side of the metal hose body; a butt welding flange is arranged on the other side of the metal hose and used for fixing; the metal hose is covered with a steel belt of a multi-layer structure; the two ends of the metal hose andthe two ends of the steel belt are fixed through cooperation of metal nipples and pressing clamp rings; and the metal hose is wound with a reinforcing ring. According to the natural gas conveying anti-explosion metal hose, the structure of an existing metal hose is optimized. The reinforcing ring is designed in the metal hose, so that the strength of the metal hose is improved, and the double anti-explosion effect of the metal hose is achieved. Meanwhile, the structure that the an existing metal hose is wound with a steel belt is optimized, all layers of the steel belt with which the outer layer of a corrugated pipe is wrapped are in staggered contact through the change of the winding sequence, and generation of friction static electricity is restrained.

Application Domain

Flexible pipes

Technology Topic

PhysicsSteel belt +4

Image

Examples

Experimental program(2)

Example Embodiment

[0032] Example one:

[0033] Such as Figure 1-9 An explosion-proof metal hose for natural gas pipeline transmission is shown to solve the problem of static sparks and electrostatic flashing caused by friction with the nozzle due to the high flow rate of natural gas leakage. In order to solve the above problems, this device uses different steel belts 7 design. The specific installation is as follows:

[0034] Such as figure 1 with figure 2 As shown, this device uses a metal hose 5 as a base, and a steel belt 7 is wrapped on the outer surface of the metal hose 5. At both ends of the metal hose 5, metal short sections 3 with a cylindrical structure are installed. In order to stabilize the contact between the metal sub 3 and the metal hose 5, an end ring 8 is provided between the metal sub 3 and the metal hose 5, such as Figure 5 Shown.

[0035] In order to keep the metal sub 3, the metal hose 5 and the steel belt 7 stable, a compression ring 4 structure is selected. Installation structure such as image 3 As shown, the compression ring 4 is fixedly welded to the metal puppet 3, and the second welding port 11 is welded. The welding port adopts a fillet weld according to the on-site welding situation, such as Image 6 Shown. Before welding the metal nipple 3 and the compression ring 4, place the end of the steel strip 7 between the metal nipple 3 and the compression ring 4 to ensure the stability of the steel strip 7 after welding, and then the metal nipple 3. The compression ring 4, the metal hose 5 and the steel belt 7 form a stable whole.

[0036] In the whole, the steel strip 7 adopts a superposition design to set three or more layers. In this embodiment, a three-layer structure is adopted, such as Figure 8 As shown, it is divided into bottom layer, middle layer and surface layer. The gaps between the three layers are all misaligned to achieve the effect of explosion protection and buffer leakage. The buffer effect is as follows Picture 9 Shown.

[0037] After forming the whole, the whole needs to be installed and fixed, such as figure 1 As shown, the installation end of the combined structure of the small flange 1 and the loose flange 2 is adopted at the left end of the whole, and the installation end of the butt welding flange 9 is adopted at the right end of the whole, which is then fixed by the bolt structure.

[0038] The two metal pup joints 3, the small flange 1 and the butt welding flange 9 are all welded by the first weld 10, and the weld is Y-shaped weld.

Example Embodiment

[0039] Embodiment two:

[0040] Such as Figure 1-9 The shown kind of explosion-proof metal hose for natural gas pipeline transmission aims to solve the problem of low strength of ordinary metal hose and weak high pressure resistance, which causes the metal hose to burst and leak. In order to solve the above problems, this device adopts the additional design of the reinforcing ring 6. The specific installation is as follows:

[0041] Such as Figure 1-9 An explosion-proof metal hose for natural gas pipeline transmission is shown to solve the problem of static sparks and electrostatic flashing caused by friction with the nozzle due to the high flow rate of natural gas leakage. In order to solve the above problems, this device uses different steel belts 7 design. The specific installation is as follows:

[0042] Such as figure 1 with figure 2 As shown, this device uses a metal hose 5 as a base, and a steel belt 7 is wrapped on the outer surface of the metal hose 5. At both ends of the metal hose 5, metal short sections 3 with a cylindrical structure are installed. In order to stabilize the contact between the metal sub 3 and the metal hose 5, an end ring 8 is provided between the metal sub 3 and the metal hose 5, such as Figure 5 Shown.

[0043] In order to make the metal hose 5 high strength and high pressure resistance, the metal hose 5 adopts a spiral corrugated pipe structure, the specific structure is as Figure 7 Shown. A reinforcing ring 6 is wound on the metal hose 5 of the spiral corrugated pipe structure. A gap is reserved between the reinforcing ring 6 and the metal hose 5 as expansion compensation. At the same time, the reinforcing ring 6 is made of stainless steel, which can double explosion-proof effect on the metal hose and strengthen the strength of the metal hose 5.

[0044] In order to keep the metal sub 3, the metal hose 5 and the steel belt 7 stable, a compression ring 4 structure is selected. Installation structure such as image 3 As shown, the compression ring 4 is fixedly welded to the metal puppet 3, and the second welding port 11 is welded. The welding port adopts a fillet weld according to the on-site welding situation, such as Image 6 Shown. Before welding the metal nipple 3 and the compression ring 4, place the end of the steel strip 7 between the metal nipple 3 and the compression ring 4 to ensure the stability of the steel strip 7 after welding, and then the metal nipple 3. The compression ring 4, the metal hose 5 and the steel belt 7 form a stable whole.

[0045] After forming the whole, the whole needs to be installed and fixed, such as figure 1 As shown, the installation end of the combined structure of the small flange 1 and the loose flange 2 is adopted at the left end of the whole, and the installation end of the butt welding flange 9 is adopted at the right end of the whole, which is then fixed by the bolt structure.

[0046] The two metal pup joints 3, the small flange 1 and the butt welding flange 9 are all welded by the first weld 10, and the weld is Y-shaped weld.

PUM

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

high strength
reduce accident rate

Natural gas conveying anti-explosion metal hose

A technology for metal hoses and natural gas pipes, applied in the direction of hoses, pipes/pipe joints/fittings, pipes, etc., can solve the problems of low strength and high flow rate of metal hoses, achieve frictional static suppression, prolong service life, reduce Effect of Minor Accident Rate

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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