CN210532092U

CN210532092U - Stress-strain nondestructive monitoring device for long-distance oil and gas pipeline

Info

Publication number: CN210532092U
Application number: CN201921691238.8U
Authority: CN
Inventors: 陈洪鑫; 崔均; 姜雪梅; 高星; 王保涛; 周秀丽; 闫雪芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-05-15
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses a long-distance oil and gas pipeline stress strain nondestructive monitoring device, which comprises a sensing device, wherein the sensing device comprises three outer edge rods, the sensing device is arranged around a pipeline and is positioned on three corners of a regular triangle, one end of each outer edge rod, which is close to the pipeline, is fixedly connected with a base, the left side and the right side of the base are fixedly connected with springs, the other end of each spring is fixedly connected with a fixed column, each outer edge rod penetrates through the fixed column and is in sliding connection, one side of each fixed column, which is close to the pipeline, is symmetrically and fixedly connected with a pressing sheet, and one side of the base, which is close to the pipeline, is fixedly connected with an arc sheet. And the response range of the monitoring device is improved and timely reminding is carried out through the alarm.

Description

Stress-strain nondestructive monitoring device for long-distance oil and gas pipeline

Technical Field

The utility model relates to a pipeline stress monitoring technology field specifically is long oil gas pipeline stress strain nondestructive monitoring device.

Background

The pipeline technology has unique advantages in long-distance transmission of media such as petroleum, natural gas and the like, and with the development of western oil and gas resources and the massive purchase of overseas energy, pipeline transportation will occupy more and more important positions in national economy of China. Therefore, the stress and strain of the long oil and gas pipeline are accurately and timely monitored, the deformation degree of the long oil and gas pipeline is within an allowable range, and therefore the long oil and gas pipeline leakage prevention device has important significance.

In the prior art, a common monitoring technology is only used for monitoring the interior of a pipeline, the external environment change cannot be reflected in time, and meanwhile, the detection data of a single point is not representative and is easy to generate misjudgment. Therefore, the technical personnel in the field provide a long oil and gas pipeline stress strain nondestructive monitoring device to solve the problems in the background art.

Disclosure of Invention

An object of the utility model is to provide a long oil gas pipeline stress strain nondestructive monitoring device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the nondestructive monitoring device for stress strain of the long oil and gas pipeline comprises a sensing device, wherein the sensing device comprises three outer edge rods, the sensing device is arranged around the pipeline and is positioned on three corners of a regular triangle, one end, close to the pipeline, of each outer edge rod is fixedly connected with a base, springs are fixedly connected to the left side and the right side of each base, the other end of each spring is fixedly connected with a fixed column, each outer edge rod penetrates through the fixed column and is in sliding connection with the fixed column, pressing sheets are symmetrically and fixedly connected to one side, close to the pipeline, of each fixed column, an arc sheet is fixedly connected to one side, close to the pipeline, of each base, an arc gasket is slidably connected to the lower side of the arc sheet, each arc gasket is in sliding connection with the corresponding pressing sheet, an elastic block I is fixedly connected to the pipeline below the arc gasket, a vibrating string type strain gauge is installed between each elastic block, the response sensitivity of the pipeline to the change of the external environment is improved;

as a further aspect of the present invention: one side of the pressing sheet close to the pipeline is fixedly connected with an elastic block II, a resistance-type strain gauge is mounted in the elastic block II in a manner of being tightly attached to the surface of the pipeline and used for detecting the strain in the pipeline, one end, far away from an outer edge rod, of the pressing sheet is fixed with a flange, an elastic block III is clamped between the flanges of the two pressing sheets, one side of the elastic block III is arc-shaped, the inside of the elastic block III is filled with a whole metal block, the strength of the elastic block III is improved, the deformation of the elastic block III is reduced, the flanges of the two pressing sheets are connected through bolts, the bolts penetrate through the elastic block III, the vibrating string type strain gauge and the resistance-type strain gauge are electrically connected, the vibrating string type strain gauge and the resistance-type strain gauge are connected with a control box above the elastic block III through wires, the lower side of the control box is fixedly, Signal generator, signal receiver, alarm and controller.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses simple structure, when external change influences the pipeline, detects through outer edge pole and vibrating wire formula strainometer to through the control box, start the alarm and inform control center.

2. When the pressure in the pipeline changes, the pressure is transmitted back to the control box through the resistance-type strain gauge and transmitted back to the control center, so that the response range of the monitoring device is enlarged, and timely reminding is performed through the alarm.

Drawings

FIG. 1 is a schematic structural diagram of a long oil and gas pipeline stress-strain nondestructive monitoring device.

FIG. 2 is a schematic structural diagram of A in the long oil and gas pipeline stress-strain nondestructive monitoring device.

FIG. 3 is a schematic structural diagram of a device B in the long oil and gas pipeline stress-strain nondestructive monitoring device.

FIG. 4 is a schematic view of a three-dimensional structure of a rubber block in the long oil and gas pipeline stress-strain nondestructive monitoring device.

In the figure: 1. an outer edge bar; 2. a base; 3. a spring; 4. an arc-shaped sheet; 5. fixing a column; 6. tabletting; 7. a first elastic block; 8. a vibrating wire strain gauge; 9. a second elastic block; 10. a resistance strain gauge; 11. an elastic block III; 12. a metal block; 13. a bolt; 14. a control box; 15. an arc-shaped gasket; 16. a wire; 17. and (4) connecting the pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in the embodiment of the present invention, a nondestructive monitoring device for stress and strain of a long oil and gas pipeline includes a sensing device, the sensing device includes an outer edge rod 1, three sensing devices are disposed around the pipeline and located at three corners of a regular triangle, one end of the outer edge rod 1 near the pipeline is fixedly connected to a base 2, both left and right sides of the base 2 are fixedly connected to springs 3, the other end of each spring 3 is fixedly connected to a fixed column 5, the outer edge rod 1 penetrates the fixed column 5 and is slidably connected thereto, one side of the fixed column 5 near the pipeline is symmetrically and fixedly connected to a pressing sheet 6, one side of the base 2 near the pipeline is fixedly connected to an arc sheet 4, the lower side of the arc sheet 4 is slidably connected to an arc gasket 15, the arc gasket 15 is slidably connected to the pressing sheet 6, the lower side of the arc gasket 15 is fixedly connected to an elastic block 1, a vibrating string type strain gauge 8 is closely, the external force applied to the pipeline is amplified through the outer edge rod 1, and the response sensitivity of the pipeline to the external environment change is improved through the detection of the vibrating wire strain gauge 8;

one side of the pressing sheet 6 close to the pipeline is fixedly connected with an elastic block II 9, a resistance type strain gauge 10 is tightly attached to the surface of the pipeline in the elastic block II 9 and used for detecting the strain in the pipeline, one end of the pressing sheet 6 far away from the outer edge rod 1 is fixed with a flange, an elastic block III 11 is clamped between the flanges of the two pressing sheets 6, one side of the elastic block III 11 is arc-shaped, the whole metal block 12 is filled in the elastic block III 11 and used for improving the strength of the elastic block III 11 and reducing the deformation amount of the elastic block III 11, the flanges of the two pressing sheets 6 are connected through a bolt 13, the bolt 13 penetrates through the elastic block III 11, the vibrating string type strain gauge 8 and the resistance type strain gauge 10 are electrically connected, the vibrating string type strain gauge 8 and the resistance type strain gauge 10 are connected with a control box 14 above through a lead 16, the lower side of the control box 14 is fixedly connected with a connecting pipe 17, the lead 16 is located in the connecting pipe 17, and the control box 14 comprises a storage battery, a signal generator, a signal receiver, an alarm and a controller.

The utility model discloses a theory of operation is: when in installation, the vibrating wire strain gauge 8 and the elastic block I7 are tightly attached to the right upper part of the pipeline, the resistance type strain gauge 10 and the elastic block II 9 are tightly attached to one third of the pipeline, the sensing device and the pressure piece 6 which are arranged right above are fixed on the outer surface of the pipeline through the bolt 13, the tightness of the bolt 13 is adjusted according to data transmitted back by the control box 14, after installation, the control box 14 is buried in the surface of the ground and is again calibrated, and when the pressure in the pipeline changes, the data are transmitted back to the control box 14 through the resistance type strain gauge 10 and transmitted back to the control center, whether the data are in a normal state or not is judged through comparing the data, when the external change affects the pipeline, the external change is detected by the outer edge rod 1 and the vibrating wire strain gauge 8, and through the control box 14, the alarm is started and the control center is informed to warn the surroundings, and the control center judges whether the scene needs to be arrived.

The utility model discloses simple structure, when external change influences the pipeline, detects through outer edge pole 1 and vibrating wire formula strainometer 8 to through control box 14, start the alarm and inform control center, when the intraductal pressure changes, pass back control box 14 through resistance-type foil gage 10, and pass back control center, improved monitoring devices's response range, and carry out timely warning through the alarm.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The stress-strain nondestructive monitoring device for the long oil and gas pipeline comprises a sensing device and is characterized in that the sensing device comprises three outer edge rods (1) which are arranged around the pipeline and are positioned at three corners of a regular triangle, one end, close to the pipeline, of each outer edge rod (1) is fixedly connected with a base (2), springs (3) are fixedly connected to the left side and the right side of each base (2), fixing columns (5) are fixedly connected to the other ends of the springs (3), the outer edge rods (1) penetrate through the fixing columns (5) and are in sliding connection, pressing sheets (6) are symmetrically and fixedly connected to one sides, close to the pipeline, of the fixing columns (5), arc-shaped sheets (4) are fixedly connected to one sides, close to the pipeline, of the bases (2), arc-shaped gaskets (15) are slidably connected to the lower sides of the arc-shaped sheets (4), the arc-shaped gaskets (15) are slidably connected with the pressing sheets (6), and elastic blocks (7, a vibrating wire strain gauge (8) is tightly attached to the pipeline between the first elastic block (7) and the pipeline;

one side fixed connection that preforming (6) is close to the pipeline has elastic block two (9), hugs closely with the pipeline surface in elastic block two (9) and installs resistance-type foil gage (10), the one end of outer edge pole (1) is kept away from in preforming (6) is fixed with the flange, and the joint has elastic block three (11) between the flange of two preforming (6), and the flange of two preforming (6) passes through bolt (13) and connects, and bolt (13) run through elastic block three (11), control box (14) of top are connected through wire (16) to string formula strainometer (8) and resistance-type foil gage (10) that shakes, and the downside fixedly connected with connecting pipe (17) of control box (14), connecting pipe (17) are through metal folding tube connection preforming (6), and wire (16) are located connecting pipe (17).

2. The nondestructive monitoring device for stress and strain of long oil and gas pipelines according to claim 1, wherein one side of the third elastic block (11) is arc-shaped, and the whole metal block (12) is filled inside the third elastic block.

3. The nondestructive stress-strain monitoring device for long oil and gas pipelines according to claim 1, wherein the vibrating wire strain gauge (8) and the resistance-type strain gauge (10) are electrically connected.

4. The nondestructive stress-strain monitoring device for long oil and gas pipelines according to claim 1, wherein the control box (14) comprises a storage battery, a signal generator, a signal receiver, an alarm and a controller.

5. The nondestructive monitoring device for stress and strain of long oil and gas pipelines according to claim 1, wherein the spring (3) is positioned inside the fixed column (5).

6. The nondestructive monitoring device for stress and strain of long oil and gas pipelines according to claim 1, wherein a sealing gasket is fixedly arranged at the joint of the fixed column (5) and the outer edge rod (1).