CN212776103U

CN212776103U - High-safety pipeline for natural gas transportation

Info

Publication number: CN212776103U
Application number: CN202021519661.2U
Authority: CN
Inventors: 陈国峰; 叶锐钧; 陈俊彬; 冯均利
Original assignee: Shenzhen Customs Industrial Products Testing Technology Center
Current assignee: Shenzhen Customs Industrial Products Testing Technology Center
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-03-23
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a high-safety pipeline for conveying natural gas, which comprises a first outer pipe, a second outer pipe is screwed on the surface of the first outer pipe, an elastic seal rod is clamped inside a seal groove, a limit spring is sleeved on the surface of the elastic seal rod, a mounting seat is screwed on the inner wall of an expansion hose, an inner conveying pipe is clamped inside the first outer pipe and the second outer pipe through the elastic clamp ring to form a primary seal structure, the secondary sealing is carried out through the fixed flange, the natural gas leakage is avoided, the inner conveying pipe is protected through the first outer pipe and the second outer pipe, the damage to the inner conveying pipe is avoided, when the pressure in the inner conveying pipe is overlarge, the elastic sealing rod is separated from the sealing groove and is in butt joint with the exhaust groove, the excessive pressure enters the expansion hose through the gap and the exhaust hole, the excessive pressure is effectively released, and the quality and the safety of conveying the explosive natural gas are high.

Description

High-safety pipeline for natural gas transportation

Technical Field

The utility model belongs to the technical field of the natural gas is carried, specifically speaking relates to a high security pipeline for natural gas is carried.

Background

Natural gas is a mixture of hydrocarbon and non-hydrocarbon gas naturally accumulated in a stratum, in petroleum geology, generally, oil field gas and gas field gas are generally used as oil field gas and gas field gas, the natural gas is mainly present in oil fields and natural gas fields, a small amount of natural gas is also present in coal beds, the natural gas is mainly used as fuel, carbon black, chemicals and liquefied petroleum gas can be produced, propane and butane produced by the natural gas are important raw materials of modern industry, the natural gas is transported through pipelines, a common natural gas pipeline is of a single-layer structure, the natural gas pipeline is easy to crack and easily generate leakage due to external force in the transportation process, meanwhile, a buffer structure is not arranged in the pipeline, and when the transportation pressure in the pipeline is too high, the pipeline is easy to crack or explode, so that certain danger exists.

In view of this, the present invention is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art, provides a high security pipeline for natural gas transport, for solving above-mentioned technical problem, the utility model discloses a technical scheme's basic design is:

a high-safety pipeline for conveying natural gas comprises a first outer pipe, wherein a second outer pipe is screwed on the surface of the first outer pipe, an inner conveying pipe is screwed on the inner portions of the first outer pipe and the second outer pipe, an elastic snap ring is welded on the surface of the inner conveying pipe, a clamping groove is formed in the second outer pipe, the elastic snap ring is clamped in the clamping groove, a fixing flange is welded on the surface of the first outer pipe and the surface of the second outer pipe, a fixing bolt is screwed on the inner portion of the fixing flange, an installation sleeve is welded on the surface of the inner conveying pipe, an installation plate is welded on the surface of the installation sleeve, the installation plate is screwed on the inner walls of the first outer pipe and the second outer pipe, a supporting spring is welded on the inner walls of the first outer pipe and the second outer pipe, an expansion pipe is screwed on the surface of the inner conveying pipe, and an elastic sealing rod is slidably connected inside the expansion pipe, the inside of expansion pipe is equipped with the seal groove, elasticity sealing rod joint is in the inside of seal groove, and the inside of expansion pipe is equipped with the air discharge duct, and elasticity sealing rod butt joint has cup jointed spacing spring in the inside of air discharge duct, and elasticity sealing rod welding is at the inner wall of mount pad, the mount pad spiro union is at the inner wall of expansion hose, expansion hose spiro union is at the inner wall of first outer tube and second outer tube.

The diameter of interior conveyer pipe is less than the internal diameter of first outer tube and second outer tube, and snap ring is isosceles trapezoid elasticity annular structure, and snap ring's inner wall welding is on the surface of the interior conveyer pipe of first outer tube, and snap ring's surface joint is in the inside in joint groove, and mounting flange welds on the link surface of first outer tube and second outer tube.

The installation cover is the ring column structure, and the installation cover is provided with the multiunit, and the skin weld of every group installation cover has multiunit mounting panel and supporting spring, and the mounting panel is rectangle platelike structure, and the mounting panel welding is on the outside surface of installation cover, and the inside of first outer tube and second outer tube is equipped with mounting groove and spring groove, and the mounting panel spiro union is in the mounting groove, and the inside supporting spring welding of first outer tube is at the inner wall in spring groove.

The expansion pipe is circle tubular structure, the outside surface of conveyer pipe including the expansion pipe spiro union and with interior conveyer pipe in communicate, elasticity seal pole comprises round bar and isosceles trapezoid elastic ring, the inner wall welding of isosceles trapezoid elastic ring is on the surface of round bar, the inside of isosceles trapezoid elastic ring's surface joint at the seal groove.

The seal groove sets up in the outer end of air discharge duct, and elasticity seal pole sliding connection is in the inside of expansion pipe, and the isosceles trapezoid elasticity ring butt joint on the elasticity seal pole is in the inside of air discharge duct, and the round bar welding on the elasticity seal pole is at the inner wall of mount pad.

The mounting seat is of a circular frame structure, the expansion pipe is connected inside the concave part of the mounting seat in a sliding mode, the protruding part of the mounting seat is internally provided with an exhaust hole, and the horizontal part of the mounting seat is connected to the inner wall of the expansion hose in a threaded mode.

After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has.

Interior conveyer pipe passes through the snap ring joint in first outer tube and second outer tube, form preliminary seal structure, carry out secondary seal through mounting flange, avoid producing natural gas and leak, protect the inner conveyer pipe through first outer tube and second outer tube, avoid the inner conveyer pipe to damage, when interior conveyer pipe internal pressure is too big, elasticity seal rod breaks away from the seal groove and docks in the air discharge duct, surplus pressure passes through in clearance and the exhaust hole entering inflation hose, effectively release surplus pressure, the quality and the security that the explosion natural gas carried, moreover, the steam generator is simple in structure, and is suitable for being generalized.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection structure of the inner conveying pipe and the mounting sleeve of the present invention;

fig. 3 is an enlarged view of a structure a in fig. 1.

In the figure: a first outer tube 1; a second outer tube 2; an inner delivery pipe 3; an elastic snap ring 4; a clamping groove 5; a fixed flange 6; a mounting sleeve 7; a mounting plate 8; a support spring 9; an expansion tube 10; an elastic seal rod 11; a seal groove 12; an exhaust groove 13; a limit spring 14; a mounting seat 15; the hose 16 is inflated.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

Referring to fig. 1, 2 and 3, a high safety pipeline for natural gas transportation includes a first outer pipe 1, a second outer pipe 2 is screwed on the surface of the first outer pipe 1, an inner transportation pipe 3 is screwed on the inner parts of the first outer pipe 1 and the second outer pipe 2, an elastic snap ring 4 is welded on the surface of the inner transportation pipe 3, a clamping groove 5 is arranged in the second outer pipe 2, the elastic snap ring 4 is clamped in the clamping groove 5, a fixing flange 6 is welded on the surface of the first outer pipe 1 and the second outer pipe 2, a fixing bolt is screwed on the inner part of the fixing flange 6, the diameter of the inner transportation pipe 3 is smaller than the inner diameter of the first outer pipe 1 and the inner diameter of the second outer pipe 2, the elastic snap ring 4 is in an isosceles trapezoid elastic ring structure, the inner wall of the elastic snap ring 4 is welded on the surface of the inner transportation pipe 3 in the first outer pipe 1, the surface of the elastic snap ring 4 is clamped in the clamping groove 5, the fixing flange 6 is welded on the, the inner conveying pipe 3 is effectively protected through the first outer pipe 1 and the second outer pipe 2, the inner conveying pipe 3 is prevented from being damaged due to external force, the elastic clamping ring 4 is fixed in the clamping groove 5 to form a primary sealing structure, then the fixing bolt is fixed in the fixing flange 6 to form a secondary sealing fixing structure, natural gas leakage is avoided, and natural gas conveying quality is guaranteed;

referring to fig. 1 and 2, a mounting sleeve 7 is welded on the surface of an inner conveying pipe 3, a mounting plate 8 is welded on the surface of the mounting sleeve 7, the mounting plate 8 is screwed on the inner walls of a first outer pipe 1 and a second outer pipe 2, a supporting spring 9 is welded on the surface of the mounting sleeve 7, the supporting spring 9 is welded on the inner walls of the first outer pipe 1 and the second outer pipe 2, the mounting sleeve 7 is in a circular ring structure, the mounting sleeve 7 is provided with a plurality of groups, a plurality of groups of mounting plates 8 and supporting springs 9 are welded on the surface of each group of mounting sleeve 7, the mounting plates 8 are in a rectangular plate structure, the mounting plates 8 are welded on the outer side surface of the mounting sleeve 7, mounting grooves and spring grooves are arranged inside the first outer pipe 1 and the second outer pipe 2, the mounting plates 8 are screwed in the mounting grooves, the supporting springs 9 inside the first outer pipe 1 are welded on the, a buffer structure is formed, and the supporting spring 9 returns to a normal state after the pressure in the inner conveying pipe 3 is normal;

referring to fig. 3, an expansion pipe 10 is screwed on the surface of an inner conveying pipe 3, an elastic sealing rod 11 is slidably connected inside the expansion pipe 10, a sealing groove 12 is formed inside the expansion pipe 10, the elastic sealing rod 11 is clamped inside the sealing groove 12, the expansion pipe 10 is of a circular tubular structure, the expansion pipe 10 is screwed on the outer side surface of the inner conveying pipe 3 and is communicated with the inner side of the inner conveying pipe 3, the elastic sealing rod 11 consists of a circular rod and an isosceles trapezoid elastic ring, the inner wall of the isosceles trapezoid elastic ring is welded on the surface of the circular rod, the surface of the isosceles trapezoid elastic ring is clamped inside the sealing groove 12, when the pressure in the inner conveying pipe 3 returns to normal, a limiting spring 14 is reset and stretched, the elastic sealing rod 11 is clamped in the sealing groove 12 again, a sealing structure is formed, the natural gas in the inner conveying pipe 3 cannot;

referring to fig. 3, an exhaust groove 13 is arranged inside an expansion pipe 10, an elastic sealing rod 11 is butted inside the exhaust groove 13, a limiting spring 14 is sleeved on the surface of the elastic sealing rod 11, the elastic sealing rod 11 is welded on the inner wall of a mounting seat 15, a sealing groove 12 is arranged at the outer end of the exhaust groove 13, the elastic sealing rod 11 is slidably connected inside the expansion pipe 10, an isosceles trapezoid elastic ring on the elastic sealing rod 11 is butted inside the exhaust groove 13, a round rod on the elastic sealing rod 11 is welded on the inner wall of the mounting seat 15, when the pressure inside the inner conveying pipe 3 is too high, the elastic sealing rod 11 is separated from the sealing groove 12 and enters the exhaust groove 13, so that the pressure inside the inner conveying pipe 3 is exhausted through the expansion pipe 10 and the exhaust hole, and the pressure condition inside the inner conveying pipe 3 is effectively relieved;

referring to fig. 1 and 3, a mounting seat 15 is screwed on the inner wall of an expansion hose 16, the expansion hose 16 is screwed on the inner walls of a first outer pipe 1 and a second outer pipe 2, the mounting seat 15 is a circular frame structure, the expansion pipe 10 is slidably connected inside a concave part of the mounting seat 15, an exhaust hole is arranged in a protruding part of the mounting seat 15, a horizontal part of the mounting seat 15 is screwed on the inner wall of the expansion hose 16, excess pressure overflowing from the inner conveying pipe 3 enters the inside of the expansion hose 16, so that the expansion hose 16 expands, the pressure condition in the inner conveying pipe 3 is effectively relieved, and the conveying safety of natural gas is ensured.

The working principle is as follows: before natural gas is conveyed, the first outer pipe 1 is butted on the surface of the second outer pipe 2, the elastic snap ring 4 slides into the second outer pipe 2, the elastic snap ring 4 is clamped and fixed in the clamping groove 5 under the elastic action, primary fixing of the first outer pipe 1 and the second outer pipe 2 is realized, then a fixing bolt is screwed together through a fixing hole on the fixing flange 6, secondary sealing and fixing of the first outer pipe 1 and the second outer pipe 2 are realized, the arrangement of a multi-stage sealing structure is adopted, natural gas leakage is avoided, meanwhile, the inner conveying pipe 3 is fixed in the first outer pipe 1 and the second outer pipe 2 through the mounting sleeve 7, the inner conveying pipe 3 is effectively protected through the first outer pipe 1 and the second outer pipe 2, natural gas conveying is prevented from being influenced by external force, when the internal pressure of the inner conveying pipe 3 is overlarge in the conveying process, the supporting spring 9 is compressed to the outer end, and the expansion pipe 10 slides towards the inside of the mounting seat 15, elasticity seal pole 11 breaks away from seal groove 12 and docks in exhaust duct 13, inflation pipe 10 is not in encapsulated situation this moment, the inside of excessive natural gas in the interior conveyer pipe 3 permeating to expansion hose 16 through clearance and exhaust hole, after pressure is normal, supporting spring 9 and spacing spring 14 reply to normal condition, make elasticity seal pole 11 joint again in seal groove 12, realize the sealing to inflation pipe 10, guarantee the security that the natural gas carried, moreover, the steam generator is simple in structure, and is suitable for being promoted.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.

Claims

1. A high-safety pipeline for natural gas transportation, comprising a first outer pipe (1), characterized in that: the surface of the first outer pipe (1) is screwed with the second outer pipe (2), the first outer pipe (1) is screwed with the inner conveying pipe (3) in the inner part of the second outer pipe (2), the surface of the inner conveying pipe (3) is welded with an elastic snap ring (4), the inner part of the second outer pipe (2) is provided with a clamping groove (5), the elastic snap ring (4) is clamped in the clamping groove (5), the surfaces of the first outer pipe (1) and the second outer pipe (2) are welded with a fixing flange (6), the inner part of the fixing flange (6) is screwed with a fixing bolt, the surface of the inner conveying pipe (3) is welded with an installation sleeve (7), the surface of the installation sleeve (7) is welded with an installation plate (8), the installation plate (8) is screwed with the inner wall of the first outer pipe (1) and the second outer pipe (2), and the surface of the installation sleeve (7) is welded with a support spring (9, supporting spring (9) welding is at the inner wall of first outer tube (1) and second outer tube (2), and the surface spiro union of interior conveyer pipe (3) has expansion pipe (10), the inside sliding connection of expansion pipe (10) has elasticity sealing rod (11), and the inside of expansion pipe (10) is equipped with seal groove (12), elasticity sealing rod (11) joint is in the inside of seal groove (12), and the inside of expansion pipe (10) is equipped with air discharge duct (13), and elasticity sealing rod (11) butt joint is in the inside of air discharge duct (13), and spacing spring (14) have been cup jointed on the surface of elasticity sealing rod (11), and elasticity sealing rod (11) welding is at the inner wall of mount pad (15), mount pad (15) spiro union is at the inner wall of expansion hose (16), expansion hose (16) spiro union is at the inner wall of first outer tube (1) and second outer tube (2).

2. The high-safety pipeline for natural gas transportation according to claim 1, wherein the diameter of the inner transportation pipe (3) is smaller than the inner diameters of the first outer pipe (1) and the second outer pipe (2), the elastic clamping ring (4) is of an isosceles trapezoid elastic annular structure, the inner wall of the elastic clamping ring (4) is welded on the surface of the inner transportation pipe (3) in the first outer pipe (1), the surface of the elastic clamping ring (4) is clamped in the clamping groove (5), and the fixing flange (6) is welded on the surface of the connecting end of the first outer pipe (1) and the second outer pipe (2).

3. The high-safety pipeline for natural gas conveying according to claim 1, wherein the installation sleeve (7) is of a circular ring-shaped structure, multiple groups of installation sleeves (7) are arranged, multiple groups of installation plates (8) and supporting springs (9) are welded on the surface of each group of installation sleeves (7), the installation plates (8) are of a rectangular plate-shaped structure, the installation plates (8) are welded on the outer side surface of the installation sleeves (7), installation grooves and spring grooves are formed in the first outer pipe (1) and the second outer pipe (2), the installation plates (8) are in threaded connection in the installation grooves, and the supporting springs (9) inside the first outer pipe (1) are welded on the inner wall of the spring grooves.

4. The high-safety pipeline for natural gas transportation according to claim 1, wherein the expansion pipe (10) is of a circular tubular structure, the expansion pipe (10) is screwed on the outer side surface of the inner transportation pipe (3) and is communicated with the inner transportation pipe (3), the elastic sealing rod (11) is composed of a circular rod and an isosceles trapezoid elastic ring, the inner wall of the isosceles trapezoid elastic ring is welded on the surface of the circular rod, and the surface of the isosceles trapezoid elastic ring is clamped inside the sealing groove (12).

5. The high-safety pipeline for natural gas transportation according to claim 1, wherein the sealing groove (12) is arranged at the outer end of the exhaust groove (13), the elastic sealing rod (11) is slidably connected inside the expansion pipe (10), an isosceles trapezoid elastic ring on the elastic sealing rod (11) is butted inside the exhaust groove (13), and a round rod on the elastic sealing rod (11) is welded on the inner wall of the mounting seat (15).

6. The high-safety pipeline for natural gas transportation according to claim 1, wherein the mounting seat (15) is a circular frame structure, the expansion pipe (10) is slidably connected inside a concave part of the mounting seat (15), a vent hole is arranged in a protruding part of the mounting seat (15), and a horizontal part of the mounting seat (15) is screwed on the inner wall of the expansion hose (16).