CN115015397A - Detection probe for high-temperature gas cooled reactor steam generator - Google Patents

Abstract

The invention discloses a detection probe for a high-temperature gas cooled reactor steam generator, which comprises a base, a lower probe shell, an upper probe shell, an adjusting part, a detection assembly and a clamping part, wherein the lower probe shell is fixedly connected with the base; the lower probe shell and the adjusting part are fixed on the base; the adjusting part is hinged with the upper probe shell and is used for adjusting the height of the upper probe shell; grooves are formed in the two sides of the upper end of the lower probe shell, and pressure sensors are arranged in the grooves; and bulges matched with the grooves are arranged on two sides of the lower end of the upper probe shell. The problem that the existing detection device has a good detection function is solved, but the device is integrally formed, so that a pipeline can only penetrate through the detection device and then is detected; for the pipeline in use, because the two ends of the pipeline are connected with other equipment, the device cannot be normally used, and the use efficiency of the equipment is reduced virtually.

Description

A detection probe for high temperature gas-cooled reactor steam generator

technical field

The invention relates to the technical field of ultrasonic guided wave probes, in particular to a detection probe for a high temperature gas-cooled reactor steam generator.

Background technique

In the electromagnetic ultrasonic testing industry, in the guided wave testing of pipes, the general steps for fixing and using the probe are as follows: wrap the nickel-cobalt alloy belt used for the external magnetic field on the pipe body to be tested, tie it with tape to fix it, and use a magnet to fix the nickel Cobalt alloy strips are magnetized.

The Chinese invention CN202502074U proposes an ultrasonic guided wave pipeline detection device, which mainly changes the inner diameter of the detection probe by increasing or decreasing the number of adjacent sensor fixing units, thereby making pipeline detection more flexible and convenient.

The invention CN206788104U in China proposes an "electromagnetic ultrasonic guided wave probe detection device", which mainly simplifies the detection steps of the detection device, so that the detection probe can be quickly installed and removed.

Although the probe detection device in China Invention 1 has a good detection function, because the device is integrally formed, the pipeline can only pass through the detection device, and then the detection is carried out; for the pipeline in use, since both ends of the pipeline are There are other devices connected, which makes the device unable to use normally, and invisibly reduces the use efficiency of the device.

Although the probe detection device in China Invention 2 adopts a flip structure, which greatly improves the installation and disassembly efficiency of the detection probe, it needs to be judged manually whether it completely fits the pipe body during the installation process. There is no corresponding clamping monitoring mechanism, resulting in the occurrence of slack, requiring the staff to repeat the assembly, which reduces the work efficiency of the staff to a certain extent.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above-mentioned technical deficiencies, and provide a detection probe for a high temperature gas-cooled reactor steam generator, which solves the problem of the existing detection device. Although it has a good detection function, the installation method is relatively simple, which reduces its practicality. The problem.

In order to achieve the above-mentioned technical purpose, the present invention has adopted the following technical solutions:

A detection probe for a high temperature gas-cooled reactor steam generator, comprising a base, a lower probe casing, an upper probe casing, an adjustment part, a detection assembly and a clamping part;

The lower probe housing and the adjusting part are fixed on the base; the adjusting part is hinged with the upper probe housing for adjusting the height of the upper probe housing;

Both sides of the upper end of the lower probe shell are provided with grooves, and a pressure sensor is arranged in the grooves;

Both sides of the lower end of the upper probe shell are provided with protrusions that cooperate with the grooves; when the protrusions and the grooves are matched, the upper probe shell and the lower probe shell are enclosed to form an installation The installation space of the tube body to be tested;

The detection assembly includes a plurality of magnets, a strip coil, a nickel-cobalt alloy belt, and a wear-resistant sheet; the lower probe shell and the upper probe shell are provided with installation grooves on the opposite side, and a plurality of the magnets are circumferentially arranged on the surface. In the installation slot, the strip coils are arranged on a plurality of the magnets to excite and receive electromagnetic guided waves, and the nickel-cobalt alloy strips are arranged on the side of the strip coils facing away from the magnets, as an external magnetic field; the wear-resistant sheet is arranged on the nickel-cobalt alloy belt;

The engaging portion is hinged on both sides of the lower probe housing, and a side of the engaging portion away from the lower probe housing is engaged into the upper probe housing.

During the use of the device, not only the dismantled pipes can be inspected, but also the pipes in use; when inspecting the dismantled pipes, the probe housing is first turned over to make it close to the adjusting part, and the Place the tube to be tested in the installation groove of the lower probe housing. After the placement is complete, turn the upper probe housing to make it lie on the same axis as the two sides of the lower probe housing. By adjusting the adjusting part, change the upper and lower probes. The distance between the shells, when the protrusion squeezes against the pressure sensor, the external device will prompt. At this time, the staff turns over the engaging part, and fastens the lower probe shell and the upper probe shell through the engaging part. At the same time; when inspecting the pipeline in service, it is only necessary to increase the position and height of the upper probe shell. When the pipe body is placed in the lower probe shell, the height of the upper probe shell can be adjusted downward without turning over.

Preferably, the adjusting part includes a first screw rod, a plate body and a connecting plate; the first screw rod is fixed on the base close to the lower probe shell, and the first screw rod is threadedly connected with the first screw rod A plate body, the connecting plate is hinged on both sides of the plate body through a rotating shaft, and the upper probe casing is fixed on the side of the connecting plate facing the lower probe casing.

Preferably, the plate body is provided with a first thread groove, and an axial end of the first screw thread penetrates the first thread groove and extends to the outside of the plate body.

Preferably, a handle is connected to one end of the first screw rod away from the base.

The first screw rod is rotatably connected to the base. When the staff rotates the first screw rod through the handle, the plate body can be lifted and lowered on the first screw rod, and the plate body is hinged with a connecting plate, and the upper probe shell is fixed on the connecting plate. In this way, when the plate body is lifted and lowered, the upper probe shell can be driven to lift and lower simultaneously. At the same time, since the connecting plate is hinged on the plate body, when the connecting plate rotates, the upper probe shell can also be driven to rotate, so as to realize The effect of angle adjustment.

Preferably, the engaging portion includes a rod body and a second screw rod, the rod body is hinged on both sides of the lower probe housing, and the inside of one end of the rod body away from the lower probe housing is provided with a precessing screw One end of the second screw extends into the upper probe housing.

Preferably, both sides of the upper probe housing are provided with second thread grooves matched with the second screw.

When the protrusion of the upper probe shell squeezes the pressure sensor, the external detection device will prompt. At this time, the staff turns the rod body and rotates the second screw, so that one end of the second screw extends into the second thread groove , so as to complete the assembly between the lower probe housing and the upper probe housing.

Preferably, the rod body is an L-shaped rod body.

Preferably, the installation groove is an arc-shaped groove body, and the circular structure formed by the two arc-shaped groove bodies is larger than the diameter of the pipe body to be detected.

Preferably, the upper probe housing can be turned over by 90°.

Preferably, the wear-resistant sheet is provided with a wear-resistant coating, and the wear-resistant coating is a polyurethane wear-resistant coating.

Compared with the prior art, the beneficial effects of the present invention include:

1. Compared with the prior art, the present invention can quickly and efficiently detect in-service pipelines or dismantled pipelines, thereby improving the detection efficiency of the detection device; 2. Compared with the prior art, the present invention has stronger integrity, The staff can easily complete the fixing and dismantling of the detection device, which solves the problems that the traditional detection probe has many detection steps, and the use cost and labor cost are relatively large.

Description of drawings

Fig. 1 is the front schematic view of the present invention;

FIG. 2 is a schematic view of the overturning of the upper probe housing in FIG. 1 of the present invention;

FIG. 3 is a top view of FIG. 1 of the present invention.

In the figure: 1, the base; 2, the lower probe shell; 211, the tank body; 21, the pressure sensor; 3, the first screw; 31, the plate body; 311, the connecting plate; 4, the upper probe shell; 41, the convex 5. Magnet; 51. Ribbon coil; 52. Nickel-cobalt alloy belt; 53. Wear-resistant sheet; 6. Rod body; 61. Second screw.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Referring to Fig. 1, a detection probe for a high temperature gas-cooled reactor steam generator includes a base 1, a lower probe housing 2, an upper probe housing 4, an adjustment part, a detection assembly and a clamping part.

A lower probe housing 2 and an adjusting part are fixed on the base 1 ; the adjusting part is hinged with the upper probe housing 4 for adjusting the height of the upper probe housing 4 .

Both sides of the upper end of the lower probe housing 2 are provided with grooves, and a pressure sensor 21 is arranged in the grooves.

Both sides of the lower end of the upper probe shell 4 are provided with protrusions 41 that cooperate with the grooves; when the protrusions 41 are matched with the grooves, the upper probe shell 4 and the lower probe shell 2 are enclosed to form a tube to be installed. body installation space.

The detection assembly includes a plurality of magnets 5, a strip coil 51, a nickel-cobalt alloy belt 52, and a wear-resistant sheet 53; the lower probe shell 2 and the upper probe shell 4 are provided with installation grooves on the opposite side, and a plurality of magnets 5 are circumferentially arranged in the installation groove. In the slot, the strip coil 51 is arranged on several magnets 5 for exciting and receiving electromagnetic guided waves; the nickel-cobalt alloy strip 52 is arranged on the side of the strip coil 51 facing away from the magnet 5 as an external magnetic field; the wear-resistant sheet 53 is provided on the nickel-cobalt alloy strip 52 .

The engaging portion is hinged on both sides of the lower probe housing 2 , and the side of the engaging portion away from the lower probe housing 2 is snapped into the upper probe housing 4 .

In the process of using the device, not only the disassembled pipeline can be inspected, but also the pipeline being used can be inspected; when inspecting the disassembled pipeline, the probe housing 4 can be turned over first to make it close to the adjusting part. Place the tube to be detected in the installation groove 211 of the lower probe housing 2. After the placement is completed, turn the upper probe housing 4 to make it lie on the same axis as the two sides of the lower probe housing 2. By adjusting the adjusting part, Change the distance between the upper and lower probe shells 2. When the protrusion 41 is pressed against the pressure sensor 21, the external device will prompt. At this time, the staff turns over the engaging part, and the lower probe shell is moved by the engaging part. 2 and the upper probe housing 4 are fastened together; when checking the pipeline in service, only the height of the upper probe housing 4 needs to be raised, and when the tube body is placed in the lower probe housing 2, the upper probe is adjusted downward. The height of the housing 4 is sufficient, and there is no need to perform a flipping action. The wear-resistant sheet 53 plays the role of protecting the nickel-cobalt alloy strip 52 and the strip coil 51. The nickel-cobalt alloy strip 52 acts as an external magnetic field, and the strip coil 51 is excited and After receiving the electromagnetic guided wave, the magnet 5 adds magnetism to the nickel-cobalt alloy strip 52 in real time, so as to form a complete electromagnetic guided wave probe and detect the tube body.

In order to improve the adjustment efficiency of the adjustment part, please refer to FIGS. 1 and 2 , in a preferred embodiment, the adjustment part includes a first screw 3 , a plate body 31 and a connecting plate 311 ; it is close to the lower probe housing 2 and on the base 1 . A screw is fixed, a plate body 31 is threadedly connected to the screw, and a connecting plate 311 is hinged on both sides of the plate body 31 through a rotating shaft. A first thread groove is opened, one end of the first screw 3 in the axial direction penetrates the first thread groove and extends to the outside of the plate body 31, and one end of the first screw 3 away from the base 1 is connected with a handle, wherein the first screw 3 is rotatably connected to the outside of the plate body 31. On the base 1, when the worker drives the first screw rod 3 to rotate through the handle, the plate body 31 can be lifted and lowered on the first screw rod 3, and a connecting plate 311 is hinged on the plate body 31, and the upper probe shell is fixed on the connecting plate 311 In this way, when the plate body 31 is lifted and lowered, the upper probe shell 4 can be driven to lift and lower simultaneously. At the same time, since the connecting plate 311 is hinged on the plate body 31, when the connecting plate 311 rotates, it can also drive the upper probe shell. The body 4 is rotated to achieve the effect of angle adjustment.

In order to improve the engaging efficiency of the engaging portion, please refer to 2. In a preferred embodiment, the engaging portion includes a rod body 6 and a second screw 61. Both sides of the lower probe housing 2 are hinged with a rod body 6, and the rod body 6 is far away from the lower probe body. One end of the probe housing 2 is provided with a second screw 61 that can be screwed in and out. One end of the second screw 61 extends into the upper probe housing 4. Both sides of the upper probe housing 4 are provided with the second screw 61. When the protrusion 41 of the upper probe housing 4 is pressed against the pressure sensor 21, the external detection device will prompt the matching second thread groove. One end of the second screw 61 extends into the second thread groove, so as to complete the assembly between the lower probe housing 2 and the upper probe housing 4, the rod body 6 is an L-shaped rod body 6, and preferably, the installation groove is an arc-shaped groove body 211. The circular structure formed by the two arc-shaped groove bodies 211 is larger than the diameter of the tube body to be detected. Preferably, the upper probe housing 4 can be turned over by 90°.

In order to improve the service life of the wear-resistant sheet 53, please refer to FIG. 1-FIG. 2. In a preferred embodiment, the wear-resistant sheet 53 is provided with a wear-resistant coating, and the wear-resistant coating is a polyurethane wear-resistant coating; A wear-resistant coating is provided, wherein the wear-resistant coating is a polyurethane wear-resistant coating, and the wear-resistant effect of the wear-resistant sheet 53 can be further improved by the polyurethane wear-resistant coating, and the polyurethane wear-resistant coating has excellent wear resistance and waterproof. And anti-corrosion performance, and then can form better wear resistance.

In order to better understand the present invention, the working process of the detection probe for the high temperature gas-cooled reactor steam generator of the present invention will be described in detail below with reference to Figs. Moving upward, the upper probe housing 4 is driven to move upward by the cooperation of the plate body 31 and the connecting plate 311; at this time, there is a large gap on the left side between the upper probe housing 4 and the lower probe housing 2, and the The pipeline to be detected is placed between the upper probe housing 4 and the lower probe housing 2, the first screw 3 is rotated again, and the upper probe housing 4 is driven to move downward through the cooperation of the plate body 31 and the connecting plate 311; When the 41 is squeezed to the pressure sensor 21, the staff rotates the rod body 6 and screw the second screw 61 into both sides of the upper probe housing 4; Cooperate to complete the pipeline inspection, in which the wear-resistant sheet 53 plays the role of protecting the nickel-cobalt alloy strip 52 and the strip coil 51, the nickel-cobalt alloy strip 52 acts as an external magnetic field, the strip coil 51 excites and receives electromagnetic guided waves, and the magnet 5 The nickel-cobalt alloy strip 52 is magnetized in real time, so as to form a complete electromagnetic guided wave probe, and the pipe body is detected.

When it is necessary to inspect and disassemble the pipeline, there is no need to adjust the first screw 3, and the connecting plate 311 is directly pushed, and the upper probe shell 4 is driven by the connecting plate 311 to be turned 90°. When the pipeline to be detected is placed in the lower probe shell 2 , and then flip the upper probe housing 4 and snap it together to complete the detection of the dismantled pipeline.

Based on the above-mentioned detection probe for the high-temperature gas-cooled reactor steam generator, the present invention also provides a corresponding operation method for the detection probe for the high-temperature gas-cooled reactor steam generator, comprising the following operation steps:

S1. Adjust the adjustment part so that the upper probe housing 4 and the lower probe housing 2 are assembled together; when the pressure sensor 21 detects a signal, the detection data is transmitted to the external control unit, and the staff turns the engaging part , ready to test the tube.

S2. The external control unit controls the operation of the strip coil 51 and the magnet 5, and generates ultrasonic waves for detecting the pipeline.

S3. After the re-detection is completed, the display is displayed, so as to facilitate the viewing of the staff.

Since the detection probe for the high temperature gas-cooled reactor steam generator has been described in detail above, it will not be repeated here.

The specific embodiments of the present invention described above do not limit the protection scope of the present invention. Any other corresponding changes and modifications made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (10)

1. a detection probe for high temperature gas-cooled reactor steam generator, is characterized in that, It includes a base, a lower probe shell, an upper probe shell, an adjustment part, a detection assembly and a clamping part; The lower probe housing and the adjusting part are fixed on the base; the adjusting part is hinged with the upper probe housing for adjusting the height of the upper probe housing; Both sides of the upper end of the lower probe shell are provided with grooves, and a pressure sensor is arranged in the grooves; Both sides of the lower end of the upper probe shell are provided with protrusions that cooperate with the grooves; when the protrusions and the grooves are matched, the upper probe shell and the lower probe shell are enclosed to form an installation The installation space of the tube body to be tested; The detection assembly includes a plurality of magnets, a strip coil, a nickel-cobalt alloy belt, and a wear-resistant sheet; the lower probe shell and the upper probe shell are provided with installation grooves on the opposite side, and a plurality of the magnets are circumferentially arranged on the surface. In the installation slot, the strip coils are arranged on a plurality of the magnets to excite and receive electromagnetic guided waves, and the nickel-cobalt alloy strips are arranged on the side of the strip coils facing away from the magnets, as an external magnetic field; the wear-resistant sheet is arranged on the nickel-cobalt alloy belt; The engaging portion is hinged on both sides of the lower probe housing, and a side of the engaging portion away from the lower probe housing is engaged into the upper probe housing. 2 . The detection probe for a high temperature gas-cooled reactor steam generator according to claim 1 , wherein the adjustment part comprises a first screw, a plate body and a connecting plate; it is close to the lower probe shell and is located at the The first screw rod is fixed on the base, the plate body is threadedly connected to the first screw rod, the connecting plate is hinged on both sides of the plate body through a rotating shaft, and the connecting plate faces the lower probe The upper probe housing is fixed on one side of the housing. 3 . The detection probe for a high temperature gas-cooled reactor steam generator according to claim 2 , wherein the plate body is provided with a first thread groove, and an axial end of the first screw penetrates the first screw. 4 . A threaded groove extends to the outside of the plate body. 4 . The detection probe for a high temperature gas-cooled reactor steam generator according to claim 3 , wherein a handle is connected to one end of the first screw rod away from the base. 5 . 5 . The detection probe for a high temperature gas-cooled reactor steam generator according to claim 1 , wherein the engaging portion comprises a rod body and a second screw rod, and both sides of the lower probe shell are hinged with a hinge. 6 . The rod body is provided with a second screw screw that can be screwed in and out in one end of the rod body away from the lower probe shell, and one end of the second screw rod extends into the upper probe shell. 6 . The detection probe for a high temperature gas-cooled reactor steam generator according to claim 5 , wherein both sides of the upper probe housing are provided with second thread grooves that cooperate with the second screw. 7 . 7 . The detection probe for a high temperature gas-cooled reactor steam generator according to claim 5 , wherein the rod body is an L-shaped rod body. 8 . 8 . The detection probe for a high temperature gas-cooled reactor steam generator according to claim 1 , wherein the installation groove is an arc-shaped groove body, and the circular structure formed by the two arc-shaped groove bodies is larger than that to be detected. 9 . Body diameter. 9 . The detection probe for a high temperature gas-cooled reactor steam generator according to claim 1 , wherein the upper probe shell can be turned over by 90°. 10 . 10 . The detection probe for a high temperature gas-cooled reactor steam generator according to claim 1 , wherein the wear-resistant sheet is provided with a wear-resistant coating, and the wear-resistant coating is a polyurethane wear-resistant coating. 11 .

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