CN216411146U

CN216411146U - Loop device based on detector acoustic-magnetic fusion test in pipeline

Info

Publication number: CN216411146U
Application number: CN202120835033.3U
Authority: CN
Inventors: 孙玄; 彭东华; 马云栋
Original assignee: Zhongke Zhiyu Shouguang Safety Technology Co ltd
Current assignee: China University of Petroleum Beijing
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2022-04-29
Anticipated expiration: 2031-04-22

Abstract

The utility model provides a loop device based on an acoustic-magnetic fusion test of a detector in a pipeline. The device includes: the circulating flow channel of water is formed by the annular pipeline, the water tank and the water pump together, the water is enabled to continuously flow in the annular pipeline through the operation of the water pump, various sensors are configured on the annular pipeline, the sensors are used for various defects existing in the annular pipeline, and the sensors comprise: infrasonic sensors and magnetostrictive sensors. The loop device based on the acoustic-magnetic fusion test of the detector in the pipeline can test the effectiveness of various sensors used in the acoustic-magnetic fusion test.

Description

Loop device based on detector acoustic-magnetic fusion test in pipeline

Technical Field

The utility model relates to the technical field of pipeline monitoring, in particular to a loop device based on an acoustic-magnetic fusion test of a detector in a pipeline.

Background

Before the pipeline is installed at a construction site, the acoustomagnetic fusion test is generally required to be carried out on the pipeline actually used in construction. However, the acoustic magnetic induction device used in the above test often fails, and the test cannot be performed normally.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a loop device based on an acoustic-magnetic fusion test of a detector in a pipeline, which can test the effectiveness of various sensors used in the acoustic-magnetic fusion test.

In order to solve the technical problem, the utility model provides a loop device based on an acoustic-magnetic fusion test of a detector in a pipeline, which comprises: the circulating flow channel of water is formed by the annular pipeline, the water tank and the water pump together, the water is enabled to continuously flow in the annular pipeline through the operation of the water pump, various sensors are configured on the annular pipeline, the sensors are used for various defects existing in the annular pipeline, and the sensors comprise: infrasonic sensors and magnetostrictive sensors.

In some embodiments, the infrasound sensor and the magnetostrictive sensor are both connected to a fiber optic signal gauge.

In some embodiments, a noise filter is further connected between the infrasound sensor, the magnetostrictive sensor and the fiber optic signal measuring instrument.

In some embodiments, an optical signal demodulator is also connected between the noise filter and the optical fiber signal measuring instrument.

In some embodiments, a magnetic field strength measuring instrument is further disposed on the annular conduit.

In some embodiments, a pressure gauge is also disposed on the annular conduit.

In some embodiments, a water pump comprises: a pressure water pump.

In some embodiments, the annular duct has a pipe diameter of not less than 219 mm.

In some embodiments, 15 sets of different types of defects are made on the annular duct.

In some embodiments, the defects include: the method comprises the following steps of spiral weld defect, small hole leakage, local leakage, elbow leakage, abnormal defect of circumferential weld and small hole corrosion of a spiral weld heat affected zone.

After adopting such design, the utility model has at least the following advantages:

the utility model utilizes the annular pipeline and various sensors distributed on the pipeline to test various defects in the pipeline, thereby completing the effectiveness test of various sensors.

Drawings

The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.

FIG. 1 is a schematic structural diagram of a loop device based on an in-pipeline detector acousto-magnetic fusion test.

Description of reference numerals:

1 parallel vertical lack of penetration and fusion of helical weld

2 spiral weld overlook 3 defects near spiral weld

4 small hole defect of elbow 5 mechanical damage near girth weld

6-leakage 7-girth weld affected zone vacuum corrosion

8 circumferential weld abnormal defect 9 axial and circumferential oval rectangular groove defect

10 corrosion defects 11 different depth hole defects

12 major axis to the groove 13 small round hole leakage

Small leakage of 15 needle holes at 14-bend leakage

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Test range: pipeline corrosion detection, mechanical nondestructive detection, welding seam abnormity detection, small hole leakage and seepage detection.

A comprehensive test loop is built, as shown in figure 1, comprehensive tests of optical fiber hysteresis expansion, optical fiber infrasound and magnetic leakage fields of a prototype are carried out, the total length of the loop is planned to be 40-80 m, receiving and transmitting ball cylinders are arranged at two ends, the pipe diameter is preliminarily designed to be 219mm or more, any pipe diameter can be configured according to the caliber of a test prototype, comprehensive experimental tests of the prototype can be carried out, and single experiment tests of optical fiber infrasound and magnetostriction can also be carried out independently.

15 groups of defects of different types are manufactured on the test loop, defects such as spiral weld defects, small hole leakage, local leakage, leakage at an elbow, abnormal defects of the loop weld, corrosion of the small hole in a spiral weld heat affected zone and the like are manufactured, and signal responses of different defects of different sensors are acquired.

The loop can be subjected to loop passing capacity tests, 1.5D, 3D and 6D elbow test tests can be adopted, water is used as a pushing medium, the fiber magnetostriction and fiber infrasound sensing technologies are carried out in a mode of simultaneously testing and comparing the inside and the outside, the fiber infrasound and the magnetostriction sensors configured on an internal prototype collect leakage or seepage sound signals to the whole pipe body through medium pushing, the collection of the fiber signals such as an external optical filter and a demodulator is synchronously carried out, and then the inside and the outside are compared. The magnetic leakage signal can be synchronously acquired from the inside and the outside, and a contrast test of the magnetic field intensity at the defect and the internally acquired magnetic induction intensity can also be performed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the above description of the present invention can be applied to various modifications, equivalent variations or modifications without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a loop device based on detector acoustomagnetic fusion test in pipeline which characterized in that includes: the circulating flow channel of water is formed by the annular pipeline, the water tank and the water pump together, the water is enabled to continuously flow in the annular pipeline through the operation of the water pump, various sensors are configured on the annular pipeline, the sensors are used for various defects existing in the annular pipeline, and the sensors comprise: infrasonic sensors and magnetostrictive sensors.

2. The device according to claim 1, wherein the infrasound sensor and the magnetostrictive sensor are both connected to a fiber-optic signal measuring instrument.

3. The device of claim 2, wherein a noise filter is further connected between the infrasonic sensor, the magnetostrictive sensor and the fiber-optic signal measuring instrument.

4. The loop device based on the acousto-magnetic fusion test of the detector in the pipeline as claimed in claim 3, wherein an optical signal demodulator is further connected between the noise filter and the optical fiber signal measuring instrument.

5. The loop device based on the acousto-magnetic fusion test of the detector in the pipeline according to claim 1, characterized in that a magnetic field intensity measuring instrument is further arranged on the loop pipeline.

6. The loop device based on the in-pipeline detector acousto-magnetic fusion test is characterized in that a pressure gauge is further arranged on the loop pipeline.

7. The loop device based on the in-pipeline detector acousto-magnetic fusion test is characterized in that the water pump comprises: a pressure water pump.

8. The loop device based on the in-pipeline detector acousto-magnetic fusion test is characterized in that the pipe diameter of the loop pipe is not less than 219 mm.

9. The device of claim 1, wherein the annular pipeline is provided with 15 sets of different types of defects.

10. The device of claim 9, wherein the defect comprises: the method comprises the following steps of spiral weld defect, small hole leakage, local leakage, elbow leakage, abnormal defect of circumferential weld and small hole corrosion of a spiral weld heat affected zone.