CN212251707U - Deformation detection device for long-distance pipeline - Google Patents

Abstract

The utility model discloses a deformation detection device of long-distance pipeline, which comprises a first barrel, a second barrel, a plurality of measuring arms arranged on the outer surface of the second barrel, a plurality of numerical control boxes and a plurality of mileage wheels, wherein the second barrel is connected with the first barrel and is positioned at the rear part of the first barrel, the first barrel and the second barrel are respectively provided with a front leather cup and a rear leather cup, the front leather cup is arranged at the front end of the first barrel and the front end of the second barrel through a front flange, the rear leather cup is arranged at the rear end of the first barrel and the rear end of the second barrel through a rear flange, a plurality of the mileage wheels are arranged on the rear flange of the second barrel, a cylinder is respectively arranged on the mounting plate and positioned at two sides of a wheel seat, and the two cylinders are respectively connected with the wheel seat through a tension spring, the utility model not only ensures the accurate measurement of the mileage of the device which advances in the pipeline, but also reduces the friction damage caused by the contact of the wheel body and the pipe wall and prolongs the service life of the mileage wheel.

Description

Deformation detection device for long-distance pipeline

Technical Field

The utility model relates to a deformation detection device of long distance pipeline belongs to pipeline detection technical field.

Background

The pipeline is the important facility of transportation liquid and gas, by the wide application in feedwater, drainage, heat supply, supply gas, long distance transport oil and natural gas, agricultural irrigation, among hydraulic engineering and various industrial installation, the pipeline produces damage deformation of different degree after long-time the use easily, lead to the efficiency of oil gas transportation to reduce, produce in the transportation and reveal and lead to the loss increase, also caused serious potential safety hazard simultaneously, consequently necessary to carry out periodic detection to the pipeline, guarantee the intact and peripheral safety of pipeline, reduce pipeline operation management risk, reduce the emergence of operation production accident.

In the prior art, a magnetic leakage detection method is often adopted to detect the characteristics, the length and the like of the inner wall and the outer wall of a pipeline and the pipeline, when the magnetic leakage detection method utilizes a ferromagnetic steel pipe to be fully magnetized, magnetic lines of force in the pipe wall are blocked by defects on the surface or the position close to the surface of the ferromagnetic steel pipe, the magnetic lines of force at the defects are distorted, and a part of the magnetic lines of force leaks out of the inner surface and the outer surface of the ferromagnetic steel pipe to form a magnetic leakage field for detection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a deformation detection device of long distance pipeline, this deformation detection device of long distance pipeline had both guaranteed the accurate measurement to the device mileage of marcing in the pipe at magnetic leakage detection device, reduced the friction harm that wheel body and pipe wall contact produced again, prolonged the life of mileage wheel.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a deformation detection device for a long-distance pipeline comprises a first cylinder, a second cylinder, a plurality of measuring arms arranged on the outer surface of the second cylinder, a plurality of numerical control boxes and a plurality of mileage wheels, wherein the second cylinder is connected with the first cylinder and is positioned behind the first cylinder;

a plurality of battery sections are arranged in the first barrel and used for supplying power to the numerical control box on the second barrel;

the front leather cup is fixedly connected with the front flange through a front pressing plate, the rear leather cup is fixedly connected with the rear flange through a rear pressing plate, a plurality of front bolts sequentially penetrate through the front pressing plate, the front leather cup, the front flange and the front end faces of the first barrel and the second barrel, the front pressing plate, the front leather cup and the front flange are fixedly connected with the first barrel and the second barrel, a plurality of rear bolts sequentially penetrate through the rear pressing plate, the rear leather cup, the rear flange and the rear end faces of the first barrel and the second barrel, and the rear pressing plate, the rear leather cup and the rear flange are fixedly connected with the first barrel and the second barrel;

the plurality of mileage wheels are installed on the surface of the back leather cup back on to the back pressure plate of the second barrel body at equal intervals along the circumferential direction, the measuring arms are arranged at equal intervals along the circumferential direction of the second barrel body, the numerical control box is installed on the outer surface of the second barrel body at equal intervals along the circumferential direction, and the numerical control box and the measuring arms are 1 in number ratio: 2-8, electrically connecting each numerical control box with 2-8 measuring arms;

the first barrel and the second barrel are connected through a chain, the chain is formed by connecting at least two metal rings, a first mounting head is arranged on a rear flange connected with the first barrel, a second mounting head is arranged on a front flange connected with the second barrel, the first mounting head and the second mounting head respectively penetrate through a rear pressing plate on the first barrel and a front pressing plate on the second barrel and are connected with two ends of the chain, the metal ring at one end of the chain is embedded into the first mounting head and is connected with the first mounting head through a first pin, and the metal ring at the other end of the chain is embedded into the second mounting head and is connected with the second mounting head through a second pin;

the mileage wheel further includes mounting panel, wheel seat and the wheel body with back flange joint, the one end and the mounting panel rotatable coupling of wheel seat, install the other end of wheel seat the wheel body, be located on the mounting panel and take turns wheel seat both sides and be provided with a cylinder respectively, these two cylinders respectively with take turns between the seat through an extension spring be connected.

The further improved scheme in the technical scheme is as follows:

1. in the above scheme, the number ratio of the numerical control box to the measuring arms is 1: 6.

2. in the scheme, each numerical control box is electrically connected with 6 measuring arms which are adjacent in sequence.

3. In the above scheme, each numerical control box is electrically connected with 6 measuring arms arranged at intervals, and 5 measuring arms are arranged between two adjacent measuring arms in the 6 measuring arms at intervals.

4. In the above scheme, a front pressure sensor is mounted on a front flange connected with the first cylinder, and a rear pressure sensor is mounted on a rear flange connected with the second cylinder.

5. In the scheme, the chain is coated with a flexible sleeve.

6. In the above scheme, the flexible sleeve is a cylindrical polyurethane sleeve.

7. In the above scheme, the wheel seat comprises two side plates arranged in parallel, and the middle parts of the two side plates are connected through a pin.

8. In the scheme, the mounting plate is fixedly provided with the concave seat, and the concave seat is embedded between the two side plates and is rotationally connected with the two side plates through a pin.

9. In the above scheme, the cylinder further includes the fixed part of being connected with the mounting panel and the movable part of being connected with the fixed part through the screw thread, be provided with on the movable part with the second extension spring hole that the extension spring is connected.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

1. the utility model discloses deformation detection device of long distance pipeline, it can move in the pipeline that has 15% deflection, and through the detection to the pipeline internal diameter that passes through, effectively discern the deformation position of pipeline, especially sunken position and deflection, provide earlier stage data for the further detection of follow-up equipment to the pipeline, provide the guide for the detection of follow-up equipment to the pipeline; in addition, a first cylinder and a second cylinder are connected through a chain, the chain is formed by connecting at least two metal rings, a rear flange connected with the first cylinder is provided with a first mounting head, a front flange connected with the second cylinder is provided with a second mounting head, the first mounting head and the second mounting head respectively penetrate through a rear pressing plate on the first cylinder and a front pressing plate on the second cylinder and are connected with two ends of the chain, the metal ring at one end of the chain is embedded into the first mounting head and is connected with the first mounting head through a first pin, the metal ring at the other end of the chain is embedded into the second mounting head and is connected with the second mounting head through a second pin, and the two cylinders are connected through the chain, so that the connection of the cylinders is realized, the conduction of driving force between the cylinders is convenient, and the device has larger bending space, so that the device can smoothly pass through a bend and still keep the mutual pulling force when the bend passes through the bend, furthermore, the chain formed by connecting a plurality of metal rings can ensure enough turning radius when the device turns, and can avoid the influence on the motion stability of the device caused by lateral rebound acting force or internal stress generated when the device turns.

2. The utility model discloses a deformation detection device of long distance pipeline, its mileage wheel further includes mounting panel, wheel seat and the wheel body with flange joint behind, one end and the mounting panel rotatable coupling of wheel seat, the wheel body is installed to the other end of wheel seat, the mounting panel and lie in wheel seat both sides and be provided with a cylinder respectively, these two cylinders are connected through an extension spring between respectively and the wheel seat, the setting of mileage wheel not only can play good supporting role to the device, simultaneously can record the device in the pipeline mileage of marcing, can cooperate other positioner, provide the movement track of accurate device in the pipeline, cooperate the measured data of measuring arm, both can obtain the pipeline position that every pipeline internal diameter value corresponds to, and the setting of extension spring, then can guarantee the pressure of contact between wheel body and the pipeline inner wall, make the wheel body keep moderate dynamics and pipeline inner wall laminating all the time, the device not only ensures the accurate measurement of the mileage of the device in the pipe, but also reduces the friction damage caused by the contact of the wheel body and the pipe wall and prolongs the service life of the mileage wheel; in addition, its cylinder further includes the fixed part of being connected with the mounting panel and the movable part of being connected through screw thread and fixed part, be provided with on the movable part with the second extension spring hole that the extension spring is connected, the split type adjustable design of cylinder can finely tune the pulling force of extension spring to guarantee the optimum value of pressure between wheel body and the pipe wall, further guarantee measuring precision, reduce the damage to the wheel body, still richened the scene of using.

Drawings

FIG. 1 is a cross-sectional view of the deformation detecting device for long distance pipeline of the present invention;

fig. 2 is a first schematic structural diagram of a mileage wheel of the deformation detection device for a long-distance pipeline of the present invention;

fig. 3 is a partial structural sectional view of a mileage wheel of the deformation detecting device for a long distance pipeline of the present invention;

fig. 4 is a schematic structural diagram of a mileage wheel of the deformation detection device for a long-distance pipeline according to the present invention;

FIG. 5 is a schematic structural view of the deformation detecting device for long distance pipeline of the present invention;

fig. 6 is a partial structural sectional view of the deformation detecting device for a long distance pipeline of the present invention;

fig. 7 is a schematic view of a partial structure of the deformation detecting device for a long-distance pipeline according to the present invention;

fig. 8 is a schematic view of a partial structure of the deformation detecting device for a long-distance pipeline according to the present invention;

fig. 9 is a schematic view of a local structure of the deformation detecting device for a long-distance pipeline according to the present invention.

In the above drawings: 1a, a first cylinder; 1b, a second cylinder; 2. a front leather cup; 3. a back leather cup; 4. measuring an arm; 5. a numerical control box; 6. a mileage wheel; 7. a front flange; 8. a rear flange; 9. a front platen; 10. a rear pressing plate; 11. a front bolt; 12. a rear bolt; 22. mounting a plate; 23. a wheel seat; 24. a wheel body; 25. a cylinder; 251. a fixed part; 252. a movable portion; 26. A tension spring; 29. a side plate; 30. a concave seat; 312. a second tension spring hole; 35. a chain; 351. a metal ring; 36. a first mounting head; 37. a second mounting head; 38. a first pin; 39. a second pin; 40. a flexible sleeve; 45. a front pressure sensor; 46. a rear pressure sensor.

Detailed Description

In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.

Example 1: a deformation detection device for long-distance pipelines comprises a first cylinder body 1a, a second cylinder body 1b, a plurality of measuring arms 4 arranged on the outer surface of the second cylinder body 1b, a plurality of numerical control boxes 5 and a plurality of mileage wheels 6, the second cylinder body 1b is connected with the first cylinder body 1a and is positioned behind the first cylinder body 1a, the first cylinder body 1a and the second cylinder body 1b are respectively provided with a front leather cup 2 and a rear leather cup 3, the front leather cup 2 is arranged at the front ends of the first cylinder body 1a and the second cylinder body 1b through a front flange 7, the rear leather cup 3 is arranged at the rear ends of the first cylinder body 1a and the second cylinder body 1b through a rear flange 8, a plurality of mileage wheels 6 are arranged on the rear flange 8 of the second cylinder body 1b, the front leather cup 2 and the rear leather cup 3 are in interference fit with the inner wall of the pipeline in the circumferential direction, and the measuring arm 4 and the mileage wheel 6 are in contact connection with the inner wall of the pipeline;

a plurality of battery sections are arranged in the first barrel 1a and used for supplying power to the numerical control box 5 on the second barrel 1 b;

the front leather cup 2 is fixedly connected with the front flange 7 through a front pressing plate 9, the rear leather cup 3 is fixedly connected with the rear flange 8 through a rear pressing plate 10, a plurality of front bolts 11 sequentially penetrate through the front pressing plate 9, the front leather cup 2, the front flange 7 and the front end faces of the first barrel body 1a and the second barrel body 1b, the front pressing plate 9, the front leather cup 2 and the front flange 7 are fixedly connected with the first barrel body 1a and the second barrel body 1b, and a plurality of rear bolts 12 sequentially penetrate through the rear pressing plate 10, the rear leather cup 3, the rear flange 8 and the rear end faces of the first barrel body 1a and the second barrel body 1b, so that the rear pressing plate 10, the rear leather cup 3 and the rear flange 8 are fixedly connected with the first barrel body 1a and the second barrel body 1 b;

the plurality of mileage wheels 6 are arranged on the surface of the rear leather cup 3 back on to the rear pressing plate 10 of the second cylinder body 1b at equal intervals along the circumferential direction, the measuring arms 4 are arranged at equal intervals along the circumferential direction of the second cylinder body 1b, the numerical control box 5 is arranged on the outer surface of the second cylinder body 1b at equal intervals along the circumferential direction, and the number ratio of the numerical control box 5 to the measuring arms 4 is 1: 2-8, electrically connecting each numerical control box 5 with 2-8 measuring arms 4;

the first cylinder 1a and the second cylinder 1b are connected by a chain 35, the chain 35 is formed by connecting at least two metal rings 351, a rear flange 8 connected with the first cylinder 1a is provided with a first mounting head 36, a front flange 7 connected with the second cylinder 1b is provided with a second mounting head 37, the first mounting head 36 and the second mounting head 37 respectively pass through a rear pressing plate 10 on the first cylinder 1a and a front pressing plate 9 on the second cylinder 1b and are connected with two ends of the chain 35, the metal ring 351 at one end of the chain 35 is embedded in the first mounting head 36 and is connected with the first mounting head 36 by a first pin 38, and the metal ring 351 at the other end of the chain 35 is embedded in the second mounting head 37 and is connected with the second mounting head 37 by a second pin 39;

the mileage wheel 6 further includes mounting panel 22, wheel seat 23 and wheel body 24 be connected with back flange 8, the one end and the mounting panel 22 rotatable coupling of wheel seat 23, install the other end of wheel seat 23 wheel body 24, on the mounting panel 22 and lie in wheel seat 23 both sides and be provided with a cylinder 25 respectively, these two cylinders 25 respectively with wheel seat 23 between be connected through an extension spring 26.

The number ratio of the numerical control box 5 to the measuring arm 4 is 1: 6; each numerical control box 5 is electrically connected with 6 measuring arms 4 which are adjacent in sequence; each numerical control box 5 is electrically connected with 6 measuring arms 4 which are arranged at intervals, and 5 measuring arms 4 are arranged between two adjacent measuring arms 4 in the 6 measuring arms 4 at intervals; a front pressure sensor 45 is arranged on the front flange 7 connected with the first cylinder 1a, a rear pressure sensor 46 is arranged on the rear flange 8 connected with the second cylinder 1b, and the arrangement of the front and rear sensors provides the pressure difference of front and rear driving forces when the device runs in a pipeline; the chain 35 is covered with a flexible sleeve 40; the flexible sleeve 40 is a cylindrical polyurethane sleeve.

Example 2: a deformation detection device for long-distance pipelines comprises a first cylinder body 1a, a second cylinder body 1b, a plurality of measuring arms 4 arranged on the outer surface of the second cylinder body 1b, a plurality of numerical control boxes 5 and a plurality of mileage wheels 6, the second cylinder body 1b is connected with the first cylinder body 1a and is positioned behind the first cylinder body 1a, the first cylinder body 1a and the second cylinder body 1b are respectively provided with a front leather cup 2 and a rear leather cup 3, the front leather cup 2 is arranged at the front ends of the first cylinder body 1a and the second cylinder body 1b through a front flange 7, the rear leather cup 3 is arranged at the rear ends of the first cylinder body 1a and the second cylinder body 1b through a rear flange 8, a plurality of mileage wheels 6 are arranged on the rear flange 8 of the second cylinder body 1b, the front leather cup 2 and the rear leather cup 3 are in interference fit with the inner wall of the pipeline in the circumferential direction, and the measuring arm 4 and the mileage wheel 6 are in contact connection with the inner wall of the pipeline;

a plurality of battery sections are arranged in the first barrel 1a and used for supplying power to the numerical control box 5 on the second barrel 1 b;

the front leather cup 2 is fixedly connected with the front flange 7 through a front pressing plate 9, the rear leather cup 3 is fixedly connected with the rear flange 8 through a rear pressing plate 10, a plurality of front bolts 11 sequentially penetrate through the front pressing plate 9, the front leather cup 2, the front flange 7 and the front end faces of the first barrel body 1a and the second barrel body 1b, the front pressing plate 9, the front leather cup 2 and the front flange 7 are fixedly connected with the first barrel body 1a and the second barrel body 1b, and a plurality of rear bolts 12 sequentially penetrate through the rear pressing plate 10, the rear leather cup 3, the rear flange 8 and the rear end faces of the first barrel body 1a and the second barrel body 1b, so that the rear pressing plate 10, the rear leather cup 3 and the rear flange 8 are fixedly connected with the first barrel body 1a and the second barrel body 1 b;

the plurality of mileage wheels 6 are arranged on the surface of the rear leather cup 3 back on to the rear pressing plate 10 of the second cylinder body 1b at equal intervals along the circumferential direction, the measuring arms 4 are arranged at equal intervals along the circumferential direction of the second cylinder body 1b, the numerical control box 5 is arranged on the outer surface of the second cylinder body 1b at equal intervals along the circumferential direction, and the number ratio of the numerical control box 5 to the measuring arms 4 is 1: 2-8, electrically connecting each numerical control box 5 with 2-8 measuring arms 4;

the first cylinder 1a and the second cylinder 1b are connected by a chain 35, the chain 35 is formed by connecting at least two metal rings 351, a rear flange 8 connected with the first cylinder 1a is provided with a first mounting head 36, a front flange 7 connected with the second cylinder 1b is provided with a second mounting head 37, the first mounting head 36 and the second mounting head 37 respectively pass through a rear pressing plate 10 on the first cylinder 1a and a front pressing plate 9 on the second cylinder 1b and are connected with two ends of the chain 35, the metal ring 351 at one end of the chain 35 is embedded in the first mounting head 36 and is connected with the first mounting head 36 by a first pin 38, and the metal ring 351 at the other end of the chain 35 is embedded in the second mounting head 37 and is connected with the second mounting head 37 by a second pin 39;

the mileage wheel 6 further includes mounting panel 22, wheel seat 23 and wheel body 24 be connected with back flange 8, the one end and the mounting panel 22 rotatable coupling of wheel seat 23, install the other end of wheel seat 23 wheel body 24, on the mounting panel 22 and lie in wheel seat 23 both sides and be provided with a cylinder 25 respectively, these two cylinders 25 respectively with wheel seat 23 between be connected through an extension spring 26.

A front pressure sensor 45 is arranged on the front flange 7 connected with the first cylinder 1a, a rear pressure sensor 46 is arranged on the rear flange 8 connected with the second cylinder 1b, and the arrangement of the front and rear sensors provides the pressure difference of front and rear driving forces when the device runs in a pipeline; the flexible sleeve 40 is a cylindrical polyurethane sleeve; the wheel seat 23 comprises two side plates 29 arranged in parallel, and the middle parts of the two side plates 29 are connected through a pin; a concave seat 30 is fixed on the mounting plate 22, and the concave seat 30 is embedded between the two side plates 29 and is rotatably connected with the two side plates 29 through a pin; the cylinder 25 further includes a fixing portion 251 connected to the mounting plate 22 and a movable portion 252 connected to the fixing portion 251 through a screw, and the movable portion 252 is provided with a second tension spring hole 312 connected to the tension spring 26.

The deformation detection device for the long-distance pipeline can move in the pipeline with 15% of deformation, effectively identifies the deformation part, particularly the sunken part and the deformation of the pipeline through detecting the inner diameter of the passing pipeline, provides early-stage data for further detection of the pipeline by subsequent equipment, and provides guidance for detection of the pipeline by the subsequent equipment; in addition, the two cylinders are connected through the chains, so that the connection of the cylinders is realized, the transmission of driving force between the cylinders is facilitated, and a larger bending space is provided, so that the device can smoothly pass through a bend and still keep the pulling force between the cylinders when passing through the bend;

in addition, the arrangement of the mileage wheel can not only play a good supporting role for the device, but also record the traveling mileage of the device in the pipeline, and can provide an accurate motion track of the device in the pipeline by matching with other positioning devices and measuring data of the measuring arm, so that the pipeline position corresponding to the inner diameter value of each pipeline can be obtained; in addition, the split type adjustable design of its cylinder can finely tune the pulling force of extension spring to guarantee the optimum value of pressure between wheel body and the pipe wall, further guarantee measuring precision, reduce the damage to the wheel body, still richened the scene of using.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides a deformation detection device of long distance pipeline which characterized in that: comprises a first cylinder body (1 a), a second cylinder body (1 b), a plurality of measuring arms (4) arranged on the outer surface of the second cylinder body (1 b), a plurality of numerical control boxes (5) and a plurality of mileage wheels (6), wherein the second cylinder body (1 b) is connected with the first cylinder body (1 a) and is positioned behind the first cylinder body (1 a), the first cylinder body (1 a) and the second cylinder body (1 b) are respectively provided with a front leather cup (2) and a rear leather cup (3), the front leather cup (2) is arranged at the front ends of the first cylinder body (1 a) and the second cylinder body (1 b) through a front flange (7), the rear leather cup (3) is arranged at the rear ends of the first cylinder body (1 a) and the second cylinder body (1 b) through a rear flange (8), and the mileage wheels (6) are arranged on the rear flange (8) of the second cylinder body (1 b), the front leather cup (2) and the rear leather cup (3) are in interference fit with the inner wall of the pipeline in the circumferential direction, and the measuring arm (4) and the mileage wheel (6) are in contact connection with the inner wall of the pipeline;

a plurality of battery sections are arranged in the first barrel (1 a) and used for supplying power to the numerical control box (5) on the second barrel (1 b);

the front leather cup (2) is fixedly connected with the front flange (7) through a front pressing plate (9), the rear leather cup (3) is fixedly connected with a rear flange (8) through a rear pressing plate (10), a plurality of front bolts (11) sequentially penetrate through the front pressing plate (9), the front leather cup (2), the front flange (7), the first barrel body (1 a) and the front end face of the second barrel body (1 b), the front pressing plate (9), the front leather cup (2) and the front flange (7) are fixedly connected with the first barrel body (1 a) and the second barrel body (1 b), a plurality of rear bolts (12) sequentially penetrate through the rear pressing plate (10), the rear leather cup (3), the rear flange (8), the rear end face of the first barrel body (1 a) and the rear end face of the second barrel body (1 b), and the rear pressing plate (10), the rear leather cup (3) and the rear flange (8) are fixedly connected with the first barrel body (1 a) and the second barrel body (1 b);

the plurality of mileage wheels (6) are installed on the surface of the back leather cup (3) back to the back pressing plate (10) of the second barrel (1 b) along the circumferential equal interval, the measuring arms (4) are arranged along the circumferential equal interval of the second barrel (1 b), the numerical control box (5) is installed on the outer surface of the second barrel (1 b) along the circumferential equal interval, and the number ratio of the numerical control box (5) to the measuring arms (4) is 1: 2-8, electrically connecting each numerical control box (5) with 2-8 measuring arms (4);

the first cylinder body (1 a) and the second cylinder body (1 b) are connected through a chain (35), the chain (35) is formed by connecting at least two metal rings (351), a first mounting head (36) is arranged on a rear flange (8) connected with the first cylinder body (1 a), a second mounting head (37) is arranged on a front flange (7) connected with the second cylinder body (1 b), the first mounting head (36) and the second mounting head (37) respectively penetrate through a rear pressing plate (10) on the first cylinder body (1 a) and a front pressing plate (9) on the second cylinder body (1 b) and are connected with two ends of the chain (35), the metal ring (351) at one end of the chain (35) is embedded into the first mounting head (36) and is connected with the first mounting head (36) through a first pin (38), the metal ring (351) at the other end of the chain (35) is embedded into the second mounting head (37), and is connected with the second mounting head (37) through a second pin (39);

mileage wheel (6) further include mounting panel (22), wheel seat (23) and wheel body (24) be connected with back flange (8), the one end and mounting panel (22) rotatable coupling of wheel seat (23), install the other end of wheel seat (23) wheel body (24), mounting panel (22) are gone up and are located wheel seat (23) both sides and are provided with a cylinder (25) respectively, and these two cylinders (25) are connected through an extension spring (26) between wheel seat (23) separately.

2. The deformation sensing device of long-distance pipes according to claim 1, wherein: the deformation sensing device of long-distance pipes according to claim 1, wherein: the number ratio of the numerical control box (5) to the measuring arm (4) is 1: 6.

3. the deformation sensing device of long-distance pipes according to claim 2, wherein: each numerical control box (5) is electrically connected with 6 measuring arms (4) which are adjacent in sequence.

4. The deformation sensing device of long-distance pipes according to claim 2, wherein: each numerical control box (5) is electrically connected with 6 measuring arms (4) which are arranged at intervals, and 5 measuring arms (4) are arranged between two adjacent measuring arms (4) in the 6 measuring arms (4) at intervals.

5. The deformation sensing device of long-distance pipes according to claim 1, wherein: a front pressure sensor (45) is arranged on a front flange (7) connected with the first cylinder body (1 a), and a rear pressure sensor (46) is arranged on a rear flange (8) connected with the second cylinder body (1 b).

6. The deformation sensing device of long-distance pipes according to claim 1, wherein: the chain (35) is wrapped with a flexible sleeve (40).

7. The deformation sensing device of long-distance pipes of claim 6, wherein: the flexible sleeve (40) is a cylindrical polyurethane sleeve.

8. The deformation sensing device of long-distance pipes according to claim 1, wherein: the wheel seat (23) comprises two side plates (29) which are arranged in parallel, and the middle parts of the two side plates (29) are connected through a pin.

9. The deformation sensing device of long-distance pipes of claim 8, wherein: a concave seat (30) is fixed on the mounting plate (22), and the concave seat (30) is embedded between the two side plates (29) and is rotatably connected with the two side plates (29) through a pin.

10. The deformation sensing device of long-distance pipes according to claim 1, wherein: the cylinder (25) further comprises a fixing part (251) connected with the mounting plate (22) and a movable part (252) connected with the fixing part (251) through threads, and a second tension spring hole (312) connected with the tension spring (26) is formed in the movable part (252).

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