T-shaped connecting pipe welding seam detection device

Abstract

A T-shaped connecting pipe welding seam detection device comprises a positioning structure and a moving assembly arranged on the positioning structure and used for achieving circumferential adjustment, the moving assembly is connected with a detection probe and an adjusting mechanism used for adjusting the angle of the detection probe, and the moving assembly controls the detection probe to move axially and / or radially; the adjusting mechanism comprises an adjusting arm and a clamp used for clamping the detection probe, the adjusting arm is rotationally connected to the moving assembly, and the clamp is rotationally connected to the adjusting arm; compared with the prior art, the detection probe can independently move in five directions or can be controlled to synchronously move in two or more directions, so that multi-angle adjustment of the detection probe is realized, no detection blind area is generated when the detection probe detects a welding seam, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline detection, and particularly relates to a weld detection device for a T-shaped joint. Background Art

[0002] In the fields of industrial manufacturing and maintenance, the T-shaped pipe weld, as an important connection structure, is widely used in equipment such as petroleum, chemical industry, and nuclear energy. The quality of the T-shaped pipe weld is directly related to the safety and reliability of the equipment. Therefore, non-destructive testing of its welding quality is particularly important.

[0003] Phased array ultrasonic testing, as an advanced non-destructive testing technology, has become one of the important means for weld detection due to its high detection efficiency, high resolution, and strong controllability. However, the T-shaped pipe weld usually consists of a main pipe and a vertically inserted branch pipe, and its weld is located at the intersection of the two pipes, forming a spatial curved weld. The curvature of the weld varies with the diameters of the main pipe and the branch pipe and the connection angle. This complex geometric structure results in irregular surface curvature of the weld and discontinuous weld edges. Such a weld structure makes it difficult for the probe to closely fit the weld area during ultrasonic testing, easily forming a blind area with poor coupling. To make the ultrasonic beam enter the weld interior at the correct angle and achieve the best reflection effect, it is necessary to ensure that the probe can flexibly adapt to the curved surfaces and angles of different parts of the weld.

[0004] To solve the above problems, a Chinese patent with the application number 202321264803.9 discloses a scanning device applicable to the weld detection of T-shaped pipe joints. The disclosed scanning device includes a magnetic wheel rod bracket assembly for adsorbing and fixing the scanning device on the branch pipe of the T-shaped pipe and an ultrasonic probe holder assembly for connecting and fixing the ultrasonic probe. The magnetic wheel rod bracket assembly includes a first support rod and a magnetic wheel provided on the first support rod. The ultrasonic probe holder assembly includes a second support rod connected to the first support rod and a clamping member for clamping the ultrasonic probe. The axis of the magnetic wheel is parallel to the axis of the branch pipe, so that the scanning device can be adsorbed on the branch pipe through the magnetic wheel and can rotate circumferentially around the branch pipe, enabling the ultrasonic probe clamped on the clamping member to rotate and scan around the weld. Compared with the chain-type scanning device, the magnetic wheel can adapt to T-shaped pipes of any size. A Chinese patent with the application number 202323097969.9 discloses a T-shaped pipe scanning device. The disclosed scanning device includes a moving frame and a scanning frame. The moving frame includes a moving beam, and a magnetic wheel assembly is provided on the moving beam. The scanning frame includes a mounting beam, and a guide rail assembly and a probe assembly are provided on the mounting beam. The end of the moving beam is fixedly connected to the end of the mounting beam, and the moving beam and the mounting beam are perpendicularly arranged. The guide rail assembly includes a fixed seat provided on the mounting beam, a guide rail seat provided on the surface of the fixed seat, a guide rail adapted to the guide rail seat and parallel to the moving beam, and a spring is provided between the guide rail and the fixed seat. The probe assembly includes a probe connecting frame provided at one end of the guide rail and a scanning probe provided on the probe connecting frame. The probe connecting frame and the moving beam are located on both sides of the mounting beam.

[0005] In the above-disclosed prior art, the magnetic wheel of the magnetic wheel rod bracket assembly adsorbs on the branch pipe and rotates circumferentially around the branch pipe. At the same time, the clamping member of the ultrasonic probe holder assembly clamps the ultrasonic probe to perform rotational detection on the weld of the T-shaped pipe. In the above prior art, only the probe can rotate circumferentially around the pipe for detection. However, the curvature of the T-shaped pipe weld changes with the diameters of the main pipe and the branch pipe and the connection angle. Such a complex geometric structure results in an irregular curvature of the weld surface and a discontinuous weld edge. Such a weld structure makes it difficult for the probe to closely fit the weld area during ultrasonic detection, easily forming a blind area with poor coupling. Therefore, the existing detection device cannot achieve multi-angle adjustment, affecting the reflection effect of the ultrasonic beam and resulting in unsatisfactory detection results. Summary of the Invention

[0006] The present invention aims to overcome the above defects in the prior art and provides a T-shaped pipe weld detection device capable of achieving multi-angle adjustment and ensuring the accuracy of detection results.

[0007] To achieve the above-mentioned invention object, the present invention adopts the following technical solutions: A T-shaped pipe joint weld detection device includes a positioning structure and a moving component arranged on the positioning structure for realizing circumferential adjustment. A detection probe and an adjustment mechanism for adjusting the angle of the detection probe are connected to the moving component. The moving component controls the axial movement and / or radial movement of the detection probe; the adjustment mechanism includes an adjustment arm and a fixture for clamping the detection probe. The adjustment arm is rotatably connected to the moving component, and the fixture is rotatably connected to the adjustment arm.

[0008] As a preferred solution of the present invention, the positioning structure includes a positioning ring. A connecting groove is formed on the positioning ring along the circumferential direction of the positioning ring. A first sliding groove for connecting the moving component is provided below the connecting groove, and a toothed ring cooperating with the moving component is provided on the groove wall of the connecting groove.

[0009] As a preferred solution of the present invention, the positioning structure further includes several positioning members arranged along the circumferential direction of the positioning ring for fixing the positioning ring. Several positioning holes for connecting the positioning members are provided on the positioning ring.

[0010] As a preferred solution of the present invention, the moving component includes a moving member and a connecting member connected to the moving member. A slider slidably connected in the first sliding groove is provided at the end of the connecting member. A circumferential motor is provided on the slider, and a circumferential gear meshing with the toothed ring is provided at the output end of the circumferential motor.

[0011] As a preferred solution of the present invention, a moving block moving along the height direction of the moving member is connected inside the moving member. A horizontally arranged telescopic rod is provided on the moving block, and a connecting arm for connecting the adjustment mechanism is provided at the end of the telescopic rod.

[0012] As a preferred solution of the present invention, a moving space for connecting the moving block is formed inside the moving member. A rack is provided on the side wall of the moving space, and a moving motor is provided on the moving block. A moving gear meshing with the rack is provided at the output end of the moving motor.

[0013] As a preferred solution of the present invention, second sliding grooves are formed on both sides of the moving space, and sliding strips connected to the second sliding grooves are provided on both sides of the moving block.

[0014] As a preferred solution of the present invention, a first rotating motor for driving the adjustment arm to rotate is provided at the end of the connecting arm, and a second rotating motor for driving the detection probe to rotate and connected to the adjustment arm is provided on the fixture.

[0015] As a preferred solution of the present invention, clamping arms for clamping the detection probe are provided on the fixture, and locking members for fastening the detection probe are connected to the clamping arms.

[0016] As a preferred embodiment of the present invention, a wedge block for increasing the stability of the detection probe is connected to the detection probe.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By fixing the positioning structure on the T-shaped tube, the moving assembly is connected to the positioning structure and drives the detection probe to perform circumferential movement around the T-shaped tube on the positioning structure. At the same time, the moving assembly can drive the detection probe to move along the axial direction and / or radial direction of the T-shaped tube. And by driving the entire adjusting mechanism to rotate through the adjusting arm of the adjusting mechanism, and at the same time the detection probe can be rotated independently, so that the detection probe can move independently in five directions respectively or control the detection probe to move synchronously in two or more directions, thereby realizing multi-angle adjustment of the detection probe, ensuring that there is no detection blind area when the detection probe detects the weld seam, and improving the accuracy of the detection result; 2. Further, by driving the probe to perform circumferential movement in the positioning ring of the positioning structure through the connecting member of the moving assembly, the detection probe can realize 360-degree scanning detection of the weld seam, expanding the detection range, and reducing the occurrence of poor coupling, thereby improving the detection effect on the entire weld seam; 3. Further, by moving the moving block in the moving member along the height direction of the moving member, and at the same time driving the probe to move along the radial direction of the T-shaped tube through the telescopic rod, the adjustment of the distance and position between the detection probe and the T-shaped tube is realized, ensuring that the position and distance of the detection probe are appropriate, and further ensuring the detection effect on the weld seam; 4. Further, by driving the adjusting arm, the fixture and the detection probe to rotate synchronously through the first rotating motor, and driving the fixture and the detection probe to rotate through the second rotating motor, the angle of the detection probe is adjusted under the cooperation of the first rotating motor and the second rotating motor, ensuring that there is no detection blind area when the detection probe detects the weld seam, and further improving the accuracy of the detection; 5. Further, through the wedge block provided on the detection probe, the wedge block abuts against the pipe wall of the T-shaped tube. When the detection probe detects the weld seam, the stability of the detection probe is ensured under the action of the wedge block, thereby avoiding the situation of shaking and offset of the detection probe, and further avoiding affecting the detection result and improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the positioning structure of the present invention; Figure 3 is a schematic structural diagram of the connection between the moving assembly and the positioning structure of the present invention; Figure 4 is a cross-sectional view of the moving assembly; Figure 5 It is a schematic structural diagram of the adjusting mechanism Reference numerals: positioning structure 1, positioning ring 101, connecting groove 1011, first sliding groove 1012, toothed ring 1013, positioning hole 1014, positioning member 102, moving assembly 2, moving member 201, moving space 2011, second sliding groove 2012, connecting member 202, slider 2021, circumferential motor 203, circumferential gear 2031, rack 204, moving block 205, sliding bar 2051, moving motor 206, moving gear 2061, telescopic rod 207, connecting arm 208, detection probe 3, wedge block 301, adjusting mechanism 4, adjusting arm 401, clamp 402, clamping arm 4021, locking member 4022, first rotating motor 403, second rotating motor 404, T-shaped pipe 5. Detailed implementation manners

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] As Figures 1-5 shown, a T-shaped pipe joint weld detection device includes a positioning structure 1 and a moving assembly 2 disposed on the positioning structure 1 for realizing circumferential adjustment. A detection probe 3 and an adjusting mechanism 4 for adjusting the angle of the detection probe 3 are connected to the moving assembly 2. The moving assembly 2 controls the axial movement and / or radial movement of the detection probe 3; the adjusting mechanism 4 includes an adjusting arm 401 and a clamp 402 for clamping the detection probe 3. The adjusting arm 401 is rotatably connected to the moving assembly 2, and the clamp 402 is rotatably connected to the adjusting arm 401.

[0021] Further, the positioning structure 1 is sleeved on the T-shaped pipe 5 and fixed at a corresponding position of the T-shaped pipe 5. The moving assembly 2 drives the detection probe 3 to rotate around the T-shaped pipe 5 on the positioning structure 1. At the same time, the moving assembly 2 itself can drive the detection probe 3 to move along the axial direction and / or radial direction of the T-shaped pipe 5, that is, the detection probe 3 can realize synchronous axial and radial movement under the control of the moving assembly 2, and can also move independently along the axial or radial direction. In addition, under the action of the adjusting mechanism 4, the adjusting arm 401 is rotatably connected to the moving assembly 2, thereby driving the detection probe 3 and the adjusting mechanism 4 as a whole to rotate. The clamp 402 is rotatably connected to the adjusting arm 401, so that the clamp 402 and the detection probe 3 rotate synchronously. The angle adjustment of the detection probe 3 in two directions is realized through the adjusting mechanism 4.

[0022] With the cooperation of the positioning structure 1, the moving assembly 2 and the adjusting mechanism 4, the detection probe 3 can move independently in five directions respectively or control the detection probe 3 to move synchronously in two or more directions, thereby realizing multi-angle adjustment of the detection probe 3, ensuring that there is no detection blind area when the detection probe 3 detects the weld, and improving the accuracy of the detection result.

[0023] The positioning structure 1 includes a positioning ring 101. A connecting groove 1011 is formed on the positioning ring 101 and is arranged along the circumferential direction of the positioning ring 101. Below the connecting groove 1011, there is a first sliding groove 1012 for connecting the moving component 2. And on the groove wall of the connecting groove 1011, there is a toothed ring 1013 that cooperates with the moving component 2. Further, the positioning ring 101 is a ring structure composed of two semi-circular structures. One end of the two semi-circular structures is connected by a hinge, and the other end is connected by a thread, so that the positioning ring 101 is sleeved on the T-shaped tube 5. The connecting groove 1011 and the first sliding groove 1012 are both arranged along the circumferential direction of the positioning ring 101, and the connecting groove 1011 is connected to the first sliding groove 1012. At the same time, the first sliding groove 1012 is located below the connecting groove 1011. The toothed ring 1013 is arranged on the groove wall of the connecting groove 1011, and the toothed ring 1013 is only arranged on the groove wall on one side of the connecting groove 1011. The moving component 2 is slidably connected in the first sliding groove 1012, and the moving component 2 cooperates with the toothed ring 1013 to realize the circumferential movement of the moving component 2 on the positioning ring 101.

[0024] The positioning structure 1 further includes a number of positioning members 102 arranged along the circumferential direction of the positioning ring 101 for fixing the positioning ring 101. There are a number of positioning holes 1014 on the positioning ring 101 for connecting the positioning members 102. Further, there are four positioning members 102, and the included angle between two adjacent positioning members 102 is 90 degrees. The positioning member 102 is a rod-shaped structure, and an external thread is formed on the outer wall of the positioning member 102. The positioning hole 1014 is arranged at the bottom of the positioning ring 101, and an internal thread is formed in the positioning hole 1014. The positioning member 102 is threadedly connected to the positioning hole 1014. By rotating the positioning member 102, the ends of the four positioning members 102 are all abutted against the tube wall of the T-shaped tube 5, thereby fixing the positioning structure 1 on the T-shaped tube 5. And the screwing-in lengths of the four positioning members 102 inside the positioning ring 101 are the same, so that the T-shaped tube 5 is located at the exact center position of the positioning ring 101, thereby ensuring that the distance between the detection probe 3 and the T-shaped tube 5 in the circumferential direction is the same.

[0025] The moving component 2 includes a moving part 201 and a connecting part 202 connected to the moving part 201. A slider 2021 slidably connected to the first chute 1012 is provided at the end of the connecting part 202. A circumferential motor 203 is provided on the slider 2021. A circumferential gear 2031 meshing with the toothed ring 1013 is provided at the output end of the circumferential motor 203. Further, the connecting part 202 is fixed to the moving part 201 by a screw. The slider 2021 of the connecting part 202 is located in the first chute 1012, and the structure of the slider 2021 is an arc structure adapted to the first chute 1012 to ensure smooth sliding of the slider 2021 in the first chute 1012. The circumferential motor 203 is fixedly arranged on the slider 2021. The circumferential gear 2031 at the output end of the circumferential motor 203 meshes with the toothed ring 1013 inside the connecting groove 1011, thereby driving the slider 2021 to slide in the first chute 1012, and further driving the moving component 2 to perform a circumferential motion in the positioning ring 101.

[0026] A moving block 205 moving along the height direction of the moving part 201 is connected inside the moving part 201. A horizontally arranged telescopic rod 207 is provided on the moving block 205. A connecting arm 208 for connecting the adjusting mechanism 4 is provided at the end of the telescopic rod 207. Further, the moving block 205 moves on the moving part 201, that is, moves along the axial direction of the T-shaped tube 5, and further drives the detection probe 3 to move along the axial direction of the T-shaped tube 5. At the same time, a telescopic rod 207 is provided on the moving block 205. The telescopic rod 207 can be an electric telescopic rod. A connecting arm 208 is provided at the end of the telescopic rod 207. The connecting arm 208 is an L-shaped structure. The adjusting mechanism 4 is arranged at the end of the horizontal section of the connecting arm 208. The vertical section of the connecting arm 208 is connected to the end of the telescopic rod 207. Under the action of the telescopic rod 207, the detection probe 3 is driven to move along the radial direction of the T-shaped tube 5.

[0027] Specifically, a moving space 2011 for connecting the moving block 205 is formed inside the moving part 201. A rack 204 is provided on the side wall of the moving space 2011. A moving motor 206 is provided on the moving block 205. A moving gear 2061 meshing with the rack 204 is provided at the output end of the moving motor 206. Further, the moving part 201 is a hollow structure with an open bottom and side. The hollow structure forms the moving space 2011 of the moving block 205. The rack 204 is provided on the side wall of one side of the moving space 2011 and is arranged along the height direction of the moving part 201. A moving motor 206 is provided on the moving block 205. The moving gear 2061 at the output end of the moving motor 206 meshes with the rack 204. Under the action of the moving motor 206, the moving block 205 is driven to move up and down, and further drives the detection probe 3 to move along the axial direction of the T-shaped tube 5.

[0028] On both sides of the moving space 2011, there are formed second sliding grooves 2012. On both sides of the moving block 205, there are sliding bars 2051 connected to the second sliding grooves 2012. Further, the second sliding grooves 2012 are provided on the side walls on both sides of the moving space 2011, and the second sliding grooves 2012 are arranged along the height direction of the moving member 201. The sliding bars 2051 are arranged along the height direction of the moving member 201 on the opposite sides of the moving block 205, and the two sliding bars 2051 are respectively slidably connected in the corresponding second sliding grooves 2012. The movement of the moving block 205 is guided through the cooperation of the second sliding grooves 2012 and the sliding bars 2051.

[0029] At the end of the connecting arm 208, there is a first rotating motor 403 for driving the adjusting arm 401 to rotate. On the fixture 402, there is a second rotating motor 404 connected to the adjusting arm 401 for driving the detection probe 3 to rotate. Further, both ends of the adjusting arm 401 are parallel to the end face of the connecting arm 208 and the top end of the fixture 402 respectively. The first rotating motor 403 is arranged at the end of the connecting arm 208, and the output end of the first rotating motor 403 is connected to one end of the adjusting arm 401. The adjusting mechanism 4 and the detection probe 3 are driven to rotate synchronously by the first rotating motor 403. The second rotating motor 404 is arranged on the top of the fixture 402, and the output end of the second rotating motor 404 is connected to the other end of the adjusting arm 401. The fixture 402 and the detection probe 3 are driven to rotate synchronously by the second rotating motor 404. Thus, under the action of the first rotating motor 403 and the second rotating motor 404, the detection probe 3 can be adjusted in angle in two directions. At the same time, the detection probe 3 can achieve synchronous adjustment in two directions or can be independently adjusted in two directions respectively.

[0030] On the fixture 402, there are clamping arms 4021 for clamping the detection probe 3. On the clamping arms 4021, there are locking members 4022 for fastening the detection probe 3. Further, the clamping arms 4021 are arranged at the bottom of the fixture 402, and there are two clamping arms 4021. A clamping space is formed between the two clamping arms 4021, and the detection probe 3 is located in this clamping space. Locking members 4022 are connected to both clamping arms 4021. The locking members 4022 are rod-shaped structures. External threads are formed on the locking members 4022, and threaded holes are formed on the clamping arms 4021. The locking members 4022 are threadedly connected to the clamping arms 4021. By rotating the locking members 4022, the ends of the locking members 4022 are abutted against the detection probe 3, thereby realizing the clamping and fixing of the detection probe 3.

[0031] A wedge block 301 for increasing the stability of the detection probe 3 is connected to the detection probe 3. Further, the wedge block 301 is threadedly connected to the detection probe 3. The wedge block 301 is parallel to and in close contact with the weld of the measured T-shaped pipe 5. The wedge block 301 enables the detection probe 3 not to shake or shift during the detection of the weld, thereby ensuring the accuracy of the detection probe 3 in detecting the weld and further improving the detection effect.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0033] Although the terms such as positioning structure 1, positioning ring 101, connection groove 1011, first sliding groove 1012, toothed ring 1013, positioning hole 1014, positioning member 102, moving assembly 2, moving member 201, moving space 2011, second sliding groove 2012, connecting member 202, slider 2021, circumferential motor 203, circumferential gear 2031, rack 204, moving block 205, sliding bar 2051, moving motor 206, moving gear 2061, telescopic rod 207, connecting arm 208, detection probe 3, wedge block 301, adjusting mechanism 4, adjusting arm 401, fixture 402, clamping arm 4021, locking member 4022, first rotating motor 403, second rotating motor 404, T-shaped pipe 5 and the like are used more in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A T-shaped pipe joint weld detection device, characterized in that, It includes a positioning structure (1) and a moving component (2) arranged on the positioning structure (1) for realizing circumferential adjustment. A detection probe (3) and an adjustment mechanism (4) for adjusting the angle of the detection probe (3) are connected to the moving component (2). The moving component (2) controls the axial movement and / or radial movement of the detection probe (3); the adjustment mechanism (4) includes an adjustment arm (401) and a fixture (402) for clamping the detection probe (3). The adjustment arm (401) is rotatably connected to the moving component (2), and the fixture (402) is rotatably connected to the adjustment arm (401).

2. The T-shaped pipe joint weld detection device according to claim 1, wherein The positioning structure (1) includes a positioning ring (101). A connecting groove (1011) is formed on the positioning ring (101) along the circumferential direction of the positioning ring (101). A first sliding groove (1012) for connecting the moving component (2) is provided below the connecting groove (1011), and a toothed ring (1013) cooperating with the moving component (2) is provided on the groove wall of the connecting groove (1011).

3. The T-shaped pipe joint weld detection device according to claim 2, characterized in that, The positioning structure (1) further includes a number of positioning members (102) arranged along the circumferential direction of the positioning ring (101) for fixing the positioning ring (101). A number of positioning holes (1014) for connecting the positioning members (102) are provided on the positioning ring (101).

4. The T-shaped pipe joint weld detection device according to claim 2, characterized in that, The moving component (2) includes a moving part (201) and a connecting member (202) connected to the moving part (201). A slider (2021) slidably connected in the first sliding groove (1012) is provided at the end of the connecting member (202). A circumferential motor (203) is provided on the slider (2021), and a circumferential gear (2031) meshing with the toothed ring (1013) is provided at the output end of the circumferential motor (203).

5. The T-shaped pipe joint weld detection device according to claim 4, characterized in that, A moving block (205) moving along the height direction of the moving part (201) is connected inside the moving part (201). A horizontally arranged telescopic rod (207) is provided on the moving block (205), and a connecting arm (208) for connecting the adjustment mechanism (4) is provided at the end of the telescopic rod (207).

6. The T-shaped nozzle weld detection device according to claim 5, wherein, A moving space (2011) for connecting the moving block (205) is formed inside the moving part (201). A rack (204) is provided on the side wall of the moving space (2011). A moving motor (206) is provided on the moving block (205), and a moving gear (2061) meshing with the rack (204) is provided at the output end of the moving motor (206).

7. The T-shaped nozzle weld detection device according to claim 6, characterized in that, Second sliding grooves (2012) are formed on both sides of the moving space (2011). Slide bars (2051) connected to the second sliding grooves (2012) are provided on both sides of the moving block (205).

8. The T-shaped nozzle weld detection device according to claim 1, characterized in that, A first rotating motor (403) for driving the adjustment arm (401) to rotate is provided at the end of the connecting arm (208). A second rotating motor (404) for driving the detection probe (3) to rotate and connected to the adjustment arm (401) is provided on the fixture (402).

9. The T-shaped pipe joint weld detection device according to claim 1, characterized in that, Clamping arms (4021) for clamping the detection probe (3) are provided on the fixture (402), and locking members (4022) for fastening the detection probe (3) are connected to the clamping arms (4021).

10. The T-shaped nozzle weld detection device according to claim 1, characterized in that, A wedge block (301) for increasing the stability of the detection probe is connected to the detection probe (3).

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