CN115575484A

CN115575484A - Magnetic memory detection probe of high-temperature pressure pipeline

Info

Publication number: CN115575484A
Application number: CN202211109074.XA
Authority: CN
Inventors: 于磊; 曹东; 李志宏; 苏宇
Original assignee: ANHUI SPECIAL EQUIPMENT INSPECTION INSTITUTE
Current assignee: ANHUI SPECIAL EQUIPMENT INSPECTION INSTITUTE
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2023-01-06

Abstract

The invention discloses a magnetic memory detection probe of a high-temperature pressure pipeline, which comprises a shell, a heat radiation part, an air guide pipe, a fan and a magnetic memory probe, wherein the shell is provided with a plurality of heat radiation parts; the heat dissipation piece is fixedly arranged in the shell, and an air cooling channel from top to bottom is formed in the heat dissipation piece; the cooling piece is arranged at the upper end of the air cooling channel of the heat dissipation piece, and the magnetic memory probe is arranged at the bottom of the air cooling channel in the heat dissipation piece; one end of the air guide pipe is communicated with the fan, and the other end of the air guide pipe penetrates through the upper cover of the shell and then is positioned at the upper end of the cooling part. According to the invention, cooling air is provided for the interior of the shell through the fan, after the cooling air is cooled by the cooling part, the air cooling effect is further improved, and the cooling air is blown to the magnetic memory probe through the air cooling channel in the heat radiating part, so that the temperature rise of the magnetic memory probe is inhibited, and the magnetic memory rapid detection of stress and fatigue damage of the high-temperature pressure pipeline in a use state is realized.

Description

Magnetic memory detection probe of high-temperature pressure pipeline

Technical Field

The invention relates to the technical field of nondestructive testing, in particular to a magnetic memory detection probe for a high-temperature pressure pipeline.

Background

High temperature pressure piping is a common and critical component in the industry. First, with the rapid development of science and technology, the application of high-temperature pressure pipelines is more and more common, and the high-temperature pressure pipelines are widely applied to thermal power plants, chemical plants, oil enterprises and the like. Secondly, the safety problem of the high-temperature pressure pipeline is more and more concerned by people, and the high-temperature pressure pipeline is easy to form stress concentration through repeated pressure, temperature, cold and heat and volume expansion and contraction circulation. Finally, most of the transported substances are toxic or inflammable and explosive substances, which easily erode and corrode the pipeline, and cause serious accidents such as toxic gas leakage, pipeline explosion and the like. Therefore, the high-temperature pressure pipeline is always a high-risk and high-consequence detection object, and besides the situation of periodically detecting the material loss of the high-temperature pressure pipeline, the high-temperature pressure pipeline also needs to be rapidly scanned for stress and fatigue damage.

Stress and fatigue damage measurement techniques currently mainly include two categories, ultrasound and electromagnetic. The principle of ultrasonic detection technology for stress and fatigue damage is to use the propagation characteristic of ultrasonic. It is found that when ultrasonic waves propagate in the same material, if the stress of the material changes, the propagation speed of the ultrasonic waves changes. With this known, or calibrated, propagation velocity-stress relationship, the stress of a material can be roughly determined by measuring the propagation time (propagation velocity) of the ultrasonic wave over a distance.

As can be seen from the above ultrasonic internal stress and fatigue damage detection principle, firstly, ultrasonic waves need to be coupled into a detection object, and after a certain distance, the ultrasonic waves are coupled out to an ultrasonic probe; secondly, the propagation time of the ultrasonic wave needs to be accurately measured. Under the condition of laboratory or under the condition of general halt to be detected, the surface of the pressure pipeline is polished carefully, and the coupling of ultrasonic waves to a detection object can be well achieved by adopting a coupling agent. However, in the high-temperature pressure pipe, the temperature of the surface thereof exceeds the boiling point of the coupling agent, a large number of bubbles are generated during the detection, and the ultrasonic coupling cannot be performed effectively, resulting in poor detection effect.

Another type of stress and fatigue damage detection technique that is more commonly used is the electromagnetic detection technique. Fundamentally, the phenomenon of the change of the electromagnetic properties of the material by stress and fatigue damage is also utilized. The stress and fatigue damage of the material is determined by determining or calibrating the electromagnetic property-stress relationship.

The existing magnetic memory detection probe is designed for halt detection, and a detection object is generally an object to be detected which is at normal temperature and is not pressurized. For the high-temperature pressure pipeline in use, the existing ultrasonic technology and magnetic memory technology probes can not successfully complete detection.

The utility model discloses a utility model application for CN210720250U discloses a nondestructive test device in reducing pipeline, this application is when concrete operation, carry out detection and the collection of data to the pipeline inner wall through camera and magnetic memory probe, each telescopic link divide into a plurality of groups, wherein, each group's telescopic link distributes along the axial of central barrel in proper order, and each telescopic link in the same group distributes along circumference in proper order, each telescopic link in the different groups distributes by staggering, thereby make this application have from walking, but reducing and full cross-section scanning's characteristics, with the requirement that satisfies the detection. However, this application does not solve the problem of performing magnetic memory detection of stress and fatigue damage in a state of a high-temperature pressure pipe.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the magnetic memory detection probe solves the problem that the existing magnetic memory detection probe cannot successfully complete the magnetic memory detection of stress and fatigue damage of a high-temperature pressure pipeline in a use state.

In order to solve the technical problems, the invention provides the following technical scheme:

a magnetic memory detection probe of a high-temperature pressure pipeline comprises a shell, a heat dissipation part, an air guide pipe, a fan and a magnetic memory probe;

the heat dissipation piece is fixedly arranged in the shell, and an air cooling channel from top to bottom is arranged in the heat dissipation piece;

the cooling piece is arranged at the upper end of the air cooling channel of the radiating piece, and the magnetic memory probe is arranged at the bottom of the air cooling channel in the radiating piece;

the upper end of the shell is provided with a cover plate of the cover plate, one end of the air guide pipe is communicated with the fan, and the other end of the air guide pipe penetrates through the cover plate of the shell and then is located at the upper end of the cooling part.

The advantages are that: according to the invention, the cooling air is provided for the inside of the shell through the fan, the air cooling effect is further improved after the cooling air is cooled by the cooling part, and the cooling air is blown to the magnetic memory probe through the air cooling channel in the heat dissipation part, so that the temperature rise of the magnetic memory probe is inhibited, and the magnetic memory rapid detection of the stress and fatigue damage of the high-temperature pressure pipeline in a use state is realized.

Preferably, the heat sink includes a plurality of parallel and vertically arranged heat dissipation fins, and the heat dissipation fins are fixedly connected with the housing through point contact.

Preferably, the heat dissipation member is a copper structure member.

Preferably, the shell is provided with the wind hole, and is a plurality of the wind hole is located four lateral walls of shell bottom respectively, and is a plurality of the wind hole all communicates with the forced air cooling passageway.

Preferably, the air guide pipe is a heat insulation flexible pipeline and can be formed by wrapping a heat insulation material outside a plastic pipeline.

Preferably, the length of the air guide pipe is 1.5 meters.

Preferably, the housing interior has a cooling cavity at the upper end of the heat sink;

a small door capable of being opened is arranged on the side wall of the cooling cavity, and the small door is connected with the shell in a buckling mode; the cooling element is placed in the cooling chamber through the opened wicket.

Preferably, the small door is made of a heat-insulating transparent material.

Preferably, the cooling element is in the form of dry ice blocks.

Preferably, an extrapolation encoder is further included; the external insertion type encoder is provided with a shell made of a thermal insulation material, and the external insertion type encoder is connected with the magnetic memory probe in a buckling mode.

Compared with the prior art, the invention has the beneficial effects that:

(1) The cooling air is supplied to the inside of the shell through the fan, the air cooling effect is greatly improved after the cooling air is cooled by the dry ice blocks, the air is blown to the magnetic memory probe through the air cooling channel in the radiating piece, the temperature rise of the magnetic memory probe is further inhibited, and the magnetic memory rapid detection of the stress and fatigue damage of the high-temperature pressure pipeline in a use state is realized.

(2) The invention adopts the shell made of heat insulation materials and the heat dissipation piece made of steel structural parts, thereby better isolating the high temperature at the position of the magnetic memory probe from the outside. And meanwhile, the shell and the heat dissipation piece are fixed in a point contact mode, so that the heat insulation effect is further improved.

(3) The invention adopts a separated fan design, and transmits cold air by taking the heat insulation flexible pipeline as an air guide pipe, thereby avoiding the influence of high-temperature environment. The length that sets up the guide duct is 1.5 meters, when guaranteeing that the fan has the refrigeration effect, is convenient for the staff operation.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is an exploded view of an embodiment of the present invention;

FIG. 3 is a partial exploded view of a cooling element and wicket according to an embodiment of the invention;

FIG. 4 is a cross-sectional view of an embodiment of the present invention;

in the figure: 1. a housing; 2. a heat sink; 3. a cooling member; 4. an air guide pipe; 5. a fan; 6. a magnetic memory probe; 11. a cover plate; 12. a wind hole; 13. a cooling chamber; 14. a small door; 21. a heat sink; 51. a hoisting ring; 61. and (3) a cable.

Detailed Description

In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the drawings attached to the specification.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 and 2, the embodiment discloses a magnetic memory detection probe for a high-temperature pressure pipeline, which includes a housing 1, a heat dissipation member 2, a cooling member 3, an air duct 4, a fan 5, and a magnetic memory probe 6.

The shell 1 is made of plastic, and the shell 1 made of plastic is insulated from temperature to a certain extent.

Referring to fig. 3, the upper and lower ends of the housing 1 are open, and the upper end of the housing 1 is provided with a plastic cover plate 11 for sealing the upper end opening of the housing 1, and the plastic cover plate 11 can be opened, so that the housing 1 can be opened from above, and the installation of the above components is facilitated.

The heat dissipation member 2 is a copper material structural member, and is supported by steel with good heat conductivity, and can be brass or red copper. The heat dissipation member 2 is fixedly installed inside the housing 1, and the bottom of the heat dissipation member 2 is flush with the bottom of the housing 1.

The housing 1 has a cooling chamber 13 at the upper end of the heat sink 2, and the cooling element 3 is placed in the cooling chamber 13. A small door 14 is arranged on one side wall of the cooling cavity 13, and the small door 14 is connected with the shell 1 in a buckling mode, so that the small door 14 can be opened and closed conveniently. In this embodiment, dry ice is used as the cooling member 3. The cooling chamber 13 is made of a relatively temperature-insulating plastic. Meanwhile, the small door 14 is made of a heat insulation transparent material, such as organic glass, so that an inspector can observe the consumption condition of the dry ice blocks in the cooling cavity 13 conveniently, the dry ice blocks can be replaced timely, and the cooling effect of the whole device is ensured. The sealing ring seals between the small door 14 and the shell 1, so as to prevent the cooling air from leaking from the small door 14. In the detection process, an inspector firstly opens the small door 14, adds a piece of dry ice smaller than the cooling cavity 13 into the cooling cavity 13, then closes the small door 14, starts the air cooling machine and starts cooling. During the inspection, when it is found that the dry ice in the cooling chamber 13 is about to be consumed, the inspector may suspend the inspection, open the wicket 14, add another piece of dry ice, and then continue working.

The cooling chamber 13 of the present embodiment has an inner space of about 30mm x 30mm, and is mainly used for placing a small piece of dry ice. When cooling air comes from the heat-insulating flexible pipe, the cooling air is firstly sprayed on the dry ice. Since the surface temperature of the dry ice is as low as-78 degrees celsius, the dry ice can lower the temperature of the cooling air significantly. Meanwhile, along with the temperature absorption and sublimation of the dry ice, the freezing effect is exerted, the dry ice is converted into gas, and the gas is ejected from the lower end of the heat dissipation piece 2 along the air cooling channel 15.

The heat dissipation member 2 comprises a plurality of heat dissipation fins 21 which are parallel to each other and are vertically arranged, the heat dissipation member 2 and the shell 1 are fixed in a multi-point contact mode, air cooling channels 15 are arranged between the heat dissipation member 2 and the shell 1 and between the two heat dissipation fins 21 from top to bottom, contact areas of the heat dissipation member 2 and the shell are reduced through a point contact mode between the shell 1 and the heat dissipation member 2, namely connection between the shell 1 and the heat dissipation structural member 2 is weakened, heat conducted to the heat dissipation member 2 from the shell 1 is reduced, and therefore the heat insulation effect is improved. Therefore, the device can be fixedly connected in a mode of a plurality of contact points, and the better heat insulation effect of the device is ensured. The heat sink 21 of this embodiment is made of copper material with good thermal conductivity, so as to ensure uniform temperature of the magnetic memory core part therein, and prevent the magnetic sensor of the magnetic memory probe 6 with high sensitivity from being damaged by high temperature formed at the bottom of the magnetic memory probe 6 at a position close to the high-temperature pressure pipeline to be measured.

It should be noted that, in the case of higher requirements on the mechanical fixing of the probe, the shell 1 and the heat sink 2 may also be in surface contact, in which case the heat conducted from the shell 1 to the heat sink 2 is increased, but the mechanical performance of the magnetic memory probe 6 is improved.

The fan 5 is communicated with the upper end of the air cooling channel 15 through the air guide pipe 4. One end of the air guide pipe 4 is communicated with the fan 5, and the other end of the air guide pipe penetrates through the cover plate 11 of the shell 1 and then is positioned at the upper end of the cooling part 3. The fan 5 is powered by a lithium battery and mainly used for providing a cooling air source for the magnetic memory probe 6 from a distance through the air guide pipe 4. The fan 5 is provided with a switch, a charging port, a wind speed adjusting button and a plurality of buttons for controlling the fan 5. Meanwhile, a hanging ring 51 is arranged on the fan 5 and is mainly used for connecting a hanging strip, so that an inspector can conveniently carry the fan 5.

The air guide pipe 4 of the embodiment is a heat insulation flexible pipeline, and can be formed by wrapping a heat insulation material outside a plastic pipeline. The length of the air guide pipe is about 1.5 meters, and if the length of the air guide pipe 4 is too long, the air quantity is possibly insufficient; if the length of the air guide pipe 4 cannot be too short, so that inconvenience in operation is avoided, and meanwhile, air sucked by the fan 5 is too close to a high-temperature pressure pipeline, so that the temperature is too high, and the refrigeration effect is lost.

A magnetic memory probe 6 is mounted under the center of the heat sink 2. The core part of the magnetic memory probe 6, namely a magnetic sensor, is arranged below the center of the heat dissipation member 2 and close to the lower end surface of the probe so as to be maximally close to a high-temperature pressure pipeline to be detected. Meanwhile, the bottom of the magnetic memory probe 6 is also provided with heat-conducting silica gel, and the temperature rise of the magnetic memory probe 6 in the detection process is fully inhibited through the heat-conducting silica gel which is fully contacted with the heat-conducting silica gel and the heat dissipation part 2 behind the heat-conducting silica gel.

Meanwhile, the magnetic sensor is connected to the upper computer through a cable 61. Specifically, the cable 61 passes through the heat sink 2 and the housing 1 in sequence from the magnetic sensor, then is separated from the thermal insulation flexible pipe, and then is connected with the upper computer.

The magnetic memory probe 6 also typically requires an encoder, and this embodiment is designed as an extrapolation encoder. Namely, a detachable encoder is designed and manufactured by adopting a thermal insulation material at one side of the magnetic memory probe 6. Because the equipment of encoder itself can more tolerate high temperature, so, only need be provided with at outer formula encoder week side and separate the temperature casing, adopt the heat insulation casing that separates the temperature material and make and just can guarantee that outer formula encoder normally works. The external insertion type encoder is mechanically connected with the magnetic memory probe 6 through a buckle and is electrically connected through a USB connector.

It should be noted that, in the case that the temperature of the high-temperature pressure pipe is not too high, the displacement encoding may also be performed by using an integrated encoder, so as to achieve the near-surface stress magnetic signal detection of the high-temperature pressure pipe. However, the volume of the probe is increased by the scheme, and the air cooling effect is reduced.

In some embodiments, the housing 1 is provided with air holes 12, a plurality of air holes 12 are located on four side walls of the bottom of the housing 1, the positions of the air holes 12 are the same as the positions of the magnetic memory probes 6, and the air holes 12 are communicated with the air cooling channel 15. So that the cooling wind can smoothly flow out of the magnetic memory probe 6. Thus, the cooling air from the fan 5 is further cooled by the cooling cavity 13, cools the heat sink 2, and finally comes out of the air holes 12, forming a smooth circulation.

The working principle of the embodiment is as follows: after the components of the device are installed, dry ice is placed in the cooling cavity 13 from the small door 14 on the shell 1, then the small door 14 is closed, and an air cooling channel 15 from top to bottom is formed in the shell 1. After the fan 5 is turned on, wind energy enters the shell 1 through the air guide pipe 4, when the wind passes through the dry ice, the dry ice can improve the air cooling effect, the cooling air acts on the magnetic memory probe 6 after passing through the heat dissipation piece 2, the temperature of the magnetic memory probe 6 is reduced, and finally the cooling air is discharged from the air hole 12 in the shell 1 to form circulation. Therefore, the magnetic memory probe 6 can rapidly detect the magnetic memory of stress and fatigue damage in the use state of the high-temperature pressure pipeline. Meanwhile, the detected data is sent to an upper computer through a signal wire.

In the embodiment, a design of a separate fan 5 is adopted, and cooling air is adopted to inhibit the temperature rise of the magnetic memory probe 6, so that the magnetic memory detection of the in-use stress and fatigue damage of the high-temperature pressure pipeline is realized.

Meanwhile, a cooling cavity 13 is arranged at the air cooling channel 15 inside the shell 1, and dry ice is placed in the cooling cavity 13, so that the air cooling effect can be greatly improved, and the magnetic memory rapid detection of stress and fatigue damage is realized in the in-use state of the high-temperature pressure pipeline.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The above-mentioned embodiments only represent embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit of the present invention, and these embodiments are all within the scope of the present invention.

Claims

1. The utility model provides a magnetic memory test probe of high temperature pressure pipeline which characterized in that: comprises a shell (1), a heat radiation piece (2), a cooling piece (3), an air guide pipe (4), a fan (5) and a magnetic memory probe (6);

the heat dissipation piece (2) is fixedly arranged in the shell (1), and an air cooling channel (15) from top to bottom is arranged in the heat dissipation piece (2);

the cooling piece (3) is arranged at the upper end of the air cooling channel (15) of the heat dissipation piece (2), and the magnetic memory probe (6) is arranged at the bottom of the air cooling channel (15) in the heat dissipation piece (2);

the upper end of the shell is provided with a cover plate (11), one end of the air guide pipe (4) is communicated with the fan (5), and the other end of the air guide pipe penetrates through the cover plate (11) of the shell (1) and then is positioned at the upper end of the cooling part (3).

2. A magnetic memory test probe for a high temperature pressure pipe as claimed in claim 1, wherein: the heat dissipation piece (2) comprises a plurality of parallel and vertically arranged cooling fins (21), and the cooling fins (21) are fixedly connected with the shell (1) in a point contact mode.

3. A magnetic memory test probe for a high temperature pressure pipe as claimed in claim 1, wherein: the heat dissipation piece (2) is a copper structure piece.

4. A magnetic memory test probe for a high temperature pressure pipe as claimed in claim 1, wherein: the shell (1) is provided with wind hole (12), and is a plurality of wind hole (12) are located four lateral walls of shell (1) bottom respectively, and are a plurality of wind hole (12) all communicate with forced air cooling passageway (15).

5. A magnetic memory test probe for a high temperature pressure pipe as claimed in claim 1, wherein: the air guide pipe (4) is a heat insulation flexible pipeline and is formed by wrapping a heat insulation material outside a plastic pipeline.

6. A magnetic memory test probe for a high temperature pressure pipe as claimed in claim 1, wherein: the length of the air guide pipe (4) is 1.5 meters.

7. A magnetic memory test probe for a high temperature pressure pipe as claimed in claim 1, wherein: a cooling cavity (13) is arranged at the upper end of the heat dissipation piece (2) in the shell (1);

a small door (14) capable of being opened is arranged on the side wall of the cooling cavity (13), and the small door (14) is connected with the shell (1) in a buckling mode; the cooling element (3) is placed in the cooling chamber (13) through the opened wicket (14).

8. A magnetic memory test probe for a high temperature pressure pipe as claimed in claim 7, wherein: the small door (14) is made of a heat-insulating transparent material.

9. A magnetic memory test probe for a high temperature pressure pipe as claimed in claim 1, wherein: the cooling piece (3) adopts dry ice blocks.

10. A magnetic memory test probe for a high temperature pressure pipe as claimed in claim 1, wherein: the device also comprises an extrapolation encoder; the external insertion type encoder is connected with the magnetic memory probe (6) in a buckling mode.