CN112682604B - Large-displacement protection device for field gas pipeline - Google Patents
Large-displacement protection device for field gas pipeline Download PDFInfo
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- CN112682604B CN112682604B CN202011517147.XA CN202011517147A CN112682604B CN 112682604 B CN112682604 B CN 112682604B CN 202011517147 A CN202011517147 A CN 202011517147A CN 112682604 B CN112682604 B CN 112682604B
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- positioning block
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Abstract
The invention relates to the field of gas pipelines, and particularly discloses a large displacement protection device for a field gas pipeline, which comprises a plurality of sections of gas pipelines, wherein a protection pipe is arranged between every two adjacent gas pipelines, the protection pipe is sleeved on the end part of the gas pipeline, spherical cavities are formed at two ends of the protection pipe, hollow spheres are rotatably connected in the spherical cavities, and the spheres are sleeved and fixedly connected on the end part of the gas pipeline; the protective pipe is internally provided with a corrugated pipe, and two ends of the corrugated pipe are respectively communicated with corresponding gas pipelines; the protective pipe comprises two symmetrically arranged connecting pipes, sliding grooves distributed in a circular array are formed in opposite surfaces of the connecting pipes, a positioning block is arranged between every two adjacent connecting pipes, the inner wall of the positioning block is fixedly connected with the middle of the corrugated pipe, a plurality of sliding rods are arranged at two ends of the positioning block, and the sliding rods are connected in the corresponding sliding grooves in a sliding mode; the gas pipelines are fixedly connected with bases, and the bases are fixedly connected with the ground; the invention aims to solve the problem of gas leakage caused by gas pipeline fracture due to large displacement of rock-soil bodies in an earthquake.
Description
Technical Field
The invention relates to the technical field of gas pipelines, and particularly discloses a large-displacement protection device for a field gas pipeline.
Background
The gas pipeline is a pipeline specially used for conveying gas, and has the characteristics of convenient connection, convenient use, long service life and the like, and because the gas resources in China are extremely unevenly distributed, the mined gas needs to be transported through the gas pipeline, so that most of the gas pipelines are in the field environment, and after an earthquake and other conditions occur, the rock-soil body is easy to generate large displacement, and the large displacement of the rock-soil body is easy to generate large displacement, so that the gas pipelines on two sides have height difference, and the joint of the gas pipelines is easy to generate fracture; in a field environment, workers cannot repair the gas pipeline in time, so that a large amount of gas is leaked, and national safety is affected.
Disclosure of Invention
The invention aims to provide a large-displacement protection device for a field gas pipeline, and aims to solve the problem of gas leakage caused by gas pipeline fracture due to large displacement of rock and soil bodies during an earthquake.
In order to achieve the purpose, the basic scheme of the invention is as follows:
a large displacement protection device for a field gas pipeline comprises a plurality of gas pipeline sections, wherein a protection pipe is arranged between adjacent gas pipeline sections, the protection pipe is sleeved on the end part of the gas pipeline, spherical cavities are formed in two ends of the protection pipe, hollow spheres are rotatably connected in the spherical cavities, and the spheres are sleeved and fixedly connected to the end part of the gas pipeline; the protective pipe is internally provided with a corrugated pipe, and two ends of the corrugated pipe are respectively communicated with corresponding gas pipelines; the protective pipe comprises two symmetrically arranged connecting pipes, sliding grooves distributed in a circular array are formed in opposite surfaces of the connecting pipes, a positioning block is arranged between every two adjacent connecting pipes, the inner wall of the positioning block is fixedly connected with the middle of the corrugated pipe, a plurality of sliding rods are arranged at two ends of the positioning block, and the sliding rods are connected in the corresponding sliding grooves in a sliding mode; the gas pipeline is fixedly connected with a base, and the base is fixedly connected with the ground.
Optionally, a coaxial cavity is arranged in the chute, and hydraulic oil is sealed in the chute; a piston with the same center of circle is fixed on the sliding rod, an overflow gap is reserved between the piston and the inner wall of the cavity, and a buffer spring is arranged between the piston and the end part of the cavity.
Optionally, a plurality of limit rings are fixed in the chamber and distributed at equal intervals, one surface of each limit ring, which is far away from the positioning block, is an inclined surface, and a gap is reserved between each limit ring and the piston; the end part of the sliding rod is provided with a vertical groove, a stop block is axially and slidably connected in the groove and is abutted against the inclined plane of the limit ring, and a reset spring is arranged between the stop block and the groove.
Optionally, a plurality of adjusting cavities concentric with the sliding rod are formed in the positioning block, and adjacent adjusting cavities are communicated with each other; coaxial gears are rotatably connected in the adjusting cavities, and adjacent gears are meshed with each other; the end parts of the sliding rods extend into the adjusting cavities and are fixedly connected with the corresponding gears, nuts attached to the positioning blocks are fixed on the sliding rods, and accommodating cavities for accommodating the nuts are formed in the opposite end faces of the connecting pipes; the limiting ring is an arc section.
Optionally, annular protective shells are fixed on both sides of the positioning block, and the protective shells are slidably sleeved on the connecting pipe.
Optionally, a sealing rubber ring is arranged at the notch of the chute.
The working principle and the beneficial effects of the scheme are as follows:
1. in the scheme, the corrugated pipes are connected with the gas pipelines at two ends, when the gas pipelines generate large displacement, the stability of gas delivery between the gas pipelines is guaranteed through the expansion and contraction of the metal corrugated pipes, and the gas pipelines are prevented from being broken due to the large displacement until the gas leaks; and the connecting pipe is pulled when the gas pipeline displaces, and the protective pipe is kept connected with the gas pipeline through the matching of the sliding rod and the sliding groove and the matching of the ball body and the spherical cavity, so that the corrugated pipe is protected, and the corrugated pipe is prevented from being damaged by external factors.
2. In the scheme, the cavity is divided into a first cavity and a second cavity by the piston, and in the process that the piston is driven by the slide rod to move towards the direction of the buffer spring, the volume of the first cavity where the buffer spring is located is reduced, the pressure of hydraulic oil is increased, the hydraulic oil is forced to flow into the second cavity through an overflow gap between the cavity and the piston, and meanwhile, the buffer spring is compressed to perform energy consumption buffering on the slide rod; because the area of reserving the clearance compares to be little a lot with the piston area, therefore liquid speed is very high when reserving the clearance, produces very big resistance to play the cushioning effect to the slide bar, prevent that the gas pipeline's tensile force in the twinkling of an eye is too big and cause connecting pipe and locating piece to break away from, lead to the damage of protective tube, can't play the guard action to the bellows.
3. In this scheme, utilize the cooperation between dog, reset spring and the spacing ring, make slide bar one-way slip, play the effect of stabilizing the connecting pipe, prevent that gas pipeline from receiving the reciprocal rocking of earthquake influence to drive the bellows and make a round trip to stretch, cause metal fatigue and impaired, cause the gas to leak.
4. In this scheme, when the staff overhauls, rotate the nut through the spanner, can make all slide bars rotate through the gear to rotate the dog to no limit ring's region, make the slide bar can reverse movement, reset gas pipeline to the same difference in height again, make the connecting pipe slide and reset, accomplish the restoration to the pipeline circuit, whole reset process is simple and efficient.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a longitudinal cross-sectional view of an embodiment of the present invention;
fig. 3 is an enlarged schematic view of a point a in fig. 2.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the gas pipeline comprises a gas pipeline 1, a connecting pipe 2, a corrugated pipe 3, a positioning block 4, a ball 5, a sliding rod 6, a base 7, a piston 8, a buffer spring 9, a limiting ring 10, a stop block 11, a return spring 12, an adjusting cavity 13, a gear 14, a nut 15 and a protective shell 16.
Examples
As shown in fig. 1, 2 and 3:
a large displacement protection device for a field gas pipeline comprises a plurality of gas pipeline sections 1, a protection pipe is arranged between every two adjacent gas pipeline sections 1, the protection pipe is sleeved on the end part of each gas pipeline section 1, spherical cavities are formed in the two ends of each protection pipe, hollow spheres 5 are rotatably connected in the spherical cavities, and the spheres 5 are sleeved and fixedly connected to the end part of each gas pipeline section 1; a corrugated pipe 3 is arranged in the protective pipe, and two ends of the corrugated pipe 3 are respectively communicated with the corresponding gas pipelines 1; the protective pipe comprises two symmetrically arranged connecting pipes 2, sliding grooves distributed in a circular array are formed in opposite surfaces of the connecting pipes 2, a positioning block 4 is arranged between every two adjacent connecting pipes 2, the inner wall of each positioning block 4 is fixedly connected with the middle of the corrugated pipe 3, a plurality of sliding rods 6 are arranged at two ends of each positioning block 4, and the sliding rods 6 are connected in the corresponding sliding grooves in a sliding manner; the gas pipeline 1 is fixedly connected with a base 7, and the base 7 is fixedly connected with the ground.
The corrugated pipe 3 is used for connecting the gas pipelines 1 at two ends, when the gas pipelines 1 are displaced greatly, the stability of gas delivery between the gas pipelines 1 is guaranteed through the expansion and contraction of the metal corrugated pipe 3, and the gas pipelines 1 are prevented from being broken due to large displacement and leaking gas; the connecting pipe 2 is pulled while the gas pipeline 1 is displaced, so that the sliding rod 6 slides in the sliding groove, the connecting pipe 2 moves relative to the positioning block 4, and the protective pipe is matched with the corrugated pipe 3 to extend; meanwhile, the ball body 5 rotates in the spherical cavity, so that the protective pipe can deflect sufficiently, the protective pipe is kept connected with the gas pipeline 1, the corrugated pipe 3 is protected, the corrugated pipe 3 is prevented from being bent too much while the stretching of the corrugated pipe 3 is ensured, the corrugated pipe is prevented from being broken due to metal fatigue, and the corrugated pipe 3 is prevented from being damaged by external factors.
Optionally, a coaxial cavity is arranged in the chute, and hydraulic oil is sealed in the chute; a concentric piston 8 is fixed on the sliding rod 6, an overflow gap is reserved between the piston 8 and the inner wall of the cavity, and a buffer spring 9 is arranged between the piston 8 and the end part of the cavity.
The cavity is divided into a first cavity and a second cavity by a piston 8, the piston 8 is driven to move towards the direction of a buffer spring 9 while the slide rod 6 slides, in the moving process of the piston 8, the volume of the first cavity where the buffer spring 9 is located is reduced, the pressure of hydraulic oil is increased, the hydraulic oil is forced to flow into the second cavity through an overflow gap between the cavity and the piston 8, and meanwhile, the buffer spring 9 is compressed to perform energy consumption buffering on the slide rod 6; because the area of the reserved gap is much smaller than that of the piston 8, the speed of liquid is very high when the gap is reserved, and great resistance is generated, so that the buffer effect is achieved on the sliding rod 6, the connecting pipe 2 is prevented from being separated from the positioning block 4 due to overlarge instantaneous stretching force of the gas pipeline 1, the damage to the protective pipe is caused, and the protective effect on the corrugated pipe 3 cannot be achieved
Optionally, a plurality of limit rings 10 distributed at equal intervals are fixed in the chamber, one surface of each limit ring 10, which is far away from the positioning block 4, is an inclined surface, and a gap is reserved between each limit ring 10 and the piston 8; the end of the slide bar 6 is provided with a vertical groove, a stop block 11 is axially and slidably connected in the groove, the stop block 11 abuts against the inclined plane of the limit ring 10, and a return spring 12 is arranged between the stop block 11 and the groove.
Optionally, a plurality of adjusting cavities 13 concentric with the sliding rod 6 are formed in the positioning block 4, and adjacent adjusting cavities 13 are communicated with each other; coaxial gears 14 are rotatably connected in the adjusting cavities 13, and the adjacent gears 14 are meshed with each other; the end part of the slide bar 6 extends into the adjusting cavity 13 and is fixedly connected with the corresponding gear 14, the slide bar 6 is fixed with a nut 15 attached to the positioning block 4, and the opposite end surfaces of the connecting pipes 2 are provided with accommodating cavities for accommodating the nuts 15; the limiting ring 10 is a circular arc section.
When the staff overhauls, rotate nut 15 through the spanner, can make all slide bars 6 rotate through gear 14 to rotate dog 11 to the region that does not have stop ring 10, make slide bar 6 can reverse movement, reset gas pipeline 1 to the same difference in height again, make connecting pipe 2 slide and reset, accomplish the restoration to the pipeline circuit, whole reset process is simple and efficient.
Optionally, annular protective shells 16 are fixed on both sides of the positioning block 4, and the protective shells 16 are slidably sleeved on the connecting pipe 2.
During the sliding process of the connecting pipe 2, the sliding rod 6 is exposed, so that the bellows 3 is partially exposed, and the protective shell 16 can relatively seal the area, thereby protecting the sliding rod 6 and the bellows 3.
Optionally, a sealing rubber ring is arranged at the notch of the chute.
Through setting up the sealing rubber circle, avoid hydraulic oil to expose, cause the power consumption efficiency to reduce, can not play better power consumption guard action to the protective tube.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.
Claims (6)
1. The utility model provides an open-air gas pipeline large displacement protector which characterized in that: the gas pipeline protection device comprises a plurality of gas pipeline sections, wherein a protection pipe is arranged between adjacent gas pipelines, the protection pipe is sleeved on the end part of the gas pipeline, spherical cavities are formed in two ends of the protection pipe, hollow spheres are rotatably connected in the spherical cavities, and the spheres are sleeved and fixedly connected to the end part of the gas pipeline; the protective pipe is internally provided with a corrugated pipe, and two ends of the corrugated pipe are respectively communicated with corresponding gas pipelines; the protective pipe comprises two symmetrically arranged connecting pipes, sliding grooves distributed in a circular array are formed in opposite surfaces of the connecting pipes, a positioning block is arranged between every two adjacent connecting pipes, the inner wall of the positioning block is fixedly connected with the middle of the corrugated pipe, a plurality of sliding rods are arranged at two ends of the positioning block, and the sliding rods are connected in the corresponding sliding grooves in a sliding mode; the gas pipeline is fixedly connected with a base, and the base is fixedly connected with the ground.
2. The large displacement protection device for the field gas pipeline according to claim 1, wherein: a coaxial cavity is arranged in each sliding chute, and hydraulic oil is sealed in each sliding chute; a piston with the same center of circle is fixed on the sliding rod, an overflow gap is reserved between the piston and the inner wall of the cavity, and a buffer spring is arranged between the piston and the end part of the cavity.
3. The large displacement protection device for the field gas pipeline as claimed in claim 2, wherein: a plurality of limit rings which are distributed at equal intervals are fixed in the cavity, one surface of each limit ring, which is far away from the positioning block, is an inclined surface, and a gap is reserved between each limit ring and the piston; the end part of the sliding rod is provided with a vertical groove, a stop block is axially and slidably connected in the groove, the stop block is abutted against the inclined plane of the limiting ring, and a reset spring is arranged between the stop block and the groove.
4. The field gas pipeline large displacement protection device of claim 3, wherein: a plurality of adjusting cavities concentric with the sliding rod are formed in the positioning block, and adjacent adjusting cavities are communicated with each other; coaxial gears are rotatably connected in the adjusting cavities, and adjacent gears are meshed with each other; the end parts of the sliding rods extend into the adjusting cavities and are fixedly connected with the corresponding gears, nuts attached to the positioning blocks are fixed on the sliding rods, and accommodating cavities for accommodating the nuts are formed in the opposite end faces of the connecting pipes; the limiting ring is an arc section.
5. The field gas pipeline large displacement protection device of claim 4, wherein: annular protective shells are fixed on two sides of the positioning block and are sleeved on the connecting pipe in a sliding mode.
6. The field gas pipeline large displacement protection device of claim 5, wherein: and a sealing rubber ring is arranged at the notch of the sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011517147.XA CN112682604B (en) | 2020-12-21 | 2020-12-21 | Large-displacement protection device for field gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011517147.XA CN112682604B (en) | 2020-12-21 | 2020-12-21 | Large-displacement protection device for field gas pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN112682604A CN112682604A (en) | 2021-04-20 |
| CN112682604B true CN112682604B (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011517147.XA Active CN112682604B (en) | 2020-12-21 | 2020-12-21 | Large-displacement protection device for field gas pipeline |
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Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DD247951A1 (en) * | 1983-10-28 | 1987-07-22 | Leipzig Chemieanlagen | ARRANGEMENT FOR LEADING OVERLANGER WELL TUBE COMPENSATORS WITH PIPING FORCED |
| DE4141064C2 (en) * | 1991-06-27 | 1997-05-22 | Hans Rattay Gmbh & Co Kg | Joint compensator |
| CN1262781C (en) * | 2004-09-20 | 2006-07-05 | 葛文宇 | Method of elastic connecting pipeline |
| CN101608726B (en) * | 2009-08-06 | 2012-02-08 | 陈墅庚 | Two-way multifunctional displacement absorption compensator |
| LU91921B1 (en) * | 2011-12-19 | 2013-06-20 | Wurth Paul Sa | Compensation joint for a fluid conduit |
| CN102537555A (en) * | 2011-12-22 | 2012-07-04 | 大连益多管道有限公司 | Anti-settling compensator |
| CN202868186U (en) * | 2012-11-19 | 2013-04-10 | 浙江乐鼎波纹管有限公司 | Gas pipeline ripple compensator |
| CN204573438U (en) * | 2015-03-11 | 2015-08-19 | 石家庄巨力科技有限公司 | A kind of anti-settling sleeve expansion joint |
| CN105546261A (en) * | 2016-02-29 | 2016-05-04 | 江苏宝金来管道成套设备有限公司 | Intensified-type double corrugated compensator |
| CN108278431B (en) * | 2018-03-13 | 2024-02-20 | 江苏五星波纹管有限公司 | Spherical corrugated pipe compensator and production method thereof |
| CN109458513A (en) * | 2018-12-05 | 2019-03-12 | 太原航空仪表有限公司 | A kind of external bellows universal compensator |
| CN211716015U (en) * | 2019-12-08 | 2020-10-20 | 苏州莱顺管道设备安装有限公司 | Gas pipeline expansion joint |
| CN211450015U (en) * | 2020-01-09 | 2020-09-08 | 江苏亚光波纹管有限公司 | Double-sleeve compensator |
| CN111594690B (en) * | 2020-07-02 | 2021-09-14 | 中国地震局工程力学研究所 | Shockproof pipeline connecting piece |
| CN111765307B (en) * | 2020-07-08 | 2021-08-31 | 中国地震局工程力学研究所 | Gas pipeline large displacement protector |
-
2020
- 2020-12-21 CN CN202011517147.XA patent/CN112682604B/en active Active
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