High-frequency hydrogen conveying pipe welding detection device and detection method

Abstract

The invention relates to a high-frequency hydrogen conveying pipe welding detection device which comprises a thermal imaging device, a cold welding position mark spraying device and a controller, the thermal imaging device is used for detecting thermal imaging data of a welding seam of a hydrogen conveying pipe, the thermal imaging device comprises a plurality of probes, and the thermal imaging device is provided with a circulating water cooling assembly around the plurality of probes; the cold welding position mark spraying device is used for being installed above a hydrogen conveying pipe. The controller is electrically connected with the multiple probes and the cold welding position mark spraying device and used for judging whether the hydrogen conveying pipe is subjected to cold welding or not according to the thermal imaging data of the multiple probes, and when it is judged that the hydrogen conveying pipe is subjected to cold welding, the cold welding position mark spraying device is controlled to conduct mark spraying. A circulating water cooling assembly is arranged around a plurality of probes in a thermal imaging device, so that the welding seam condition of the hydrogen conveying pipe in the welding process is detected on line, whether the welding seam is subjected to cold welding or not is judged, and the problem that in the related technology, in the manufacturing process of the high-frequency hydrogen conveying steel pipe, the welding seam cannot be subjected to cold welding is solved. And whether the welding seam has the cold welding problem in the welding process cannot be detected in real time.

Description

Technical Field

[0001] The present application relates to the technical field of high-frequency welding, and in particular to a high-frequency hydrogen pipe welding detection device and detection method. Background Art

[0002] At present, under the guidance of the "dual carbon" strategy, hydrogen energy is being gradually promoted and used as a clean and renewable energy source. Among them, high-frequency hydrogen transmission pipes are used as hydrogen transmission carriers, and the quality of high-frequency hydrogen transmission pipes affects the safety of hydrogen use.

[0003] In the related technologies, during the manufacturing process of high-frequency hydrogen transmission steel pipes, ultrasonic detection technology and eddy current flaw detection technology are mainly used to detect welds after cooling, and are unable to detect in real time whether there are cold welding problems in the welds during the welding process.

[0004] Therefore, it is necessary to design a new high-frequency hydrogen pipe welding detection device to overcome the above problems. Summary of the Invention

[0005] The present application provides a high-frequency hydrogen pipe welding detection device and detection method, which can solve the technical problem in the related technology that in the manufacturing process of high-frequency hydrogen steel pipes, ultrasonic detection technology and eddy current flaw detection technology mainly detect the welds after cooling, and cannot detect in real time whether there is a cold welding problem in the welds during the welding process.

[0006] In a first aspect, an embodiment of the present application provides a high-frequency hydrogen pipe welding detection device, comprising: a thermal imaging device, a cold welding position marker and a controller, wherein the thermal imaging device is used to be installed above the hydrogen pipe and detect thermal imaging data of the weld of the hydrogen pipe, and the thermal imaging device includes multiple probes, and the thermal imaging device is provided with a circulating water cooling assembly around the multiple probes; the cold welding position marker is used to be installed above the hydrogen pipe, and the cold welding position marker is spaced apart from the thermal imaging device; the controller is electrically connected to the multiple probes and the cold welding position marker, and the controller is used to determine whether cold welding occurs in the hydrogen pipe based on the thermal imaging data of the multiple probes, and when it is determined that cold welding occurs in the hydrogen pipe, the cold welding position marker is controlled to perform marking.

[0007] In combination with the first aspect, in one embodiment, the circulating water cooling assembly includes a water cooling pipe and a water pump, the water pump is connected to the water cooling pipe, the water pump is electrically connected to the controller, and the water cooling pipe is cross-wound between the multiple probes.

[0008] In combination with the first aspect, in one embodiment, the distance between each probe and the weld is set to 100 to 150 mm, and the multiple probes are used to be evenly distributed along the width direction of the weld of the hydrogen transmission pipe, and the water-cooling pipe is wound in an S shape between the multiple probes.

[0009] In combination with the first aspect, in one embodiment, a pressure sensor is provided outside the water cooling pipe.

[0010] In combination with the first aspect, in one embodiment, the high-frequency hydrogen pipe welding detection device further includes a speed sensor, which is electrically connected to the controller and is used to be installed under the hydrogen pipe and measure the travel speed of the hydrogen pipe.

[0011] In combination with the first aspect, in one embodiment, the high-frequency hydrogen pipe welding detection device further includes a cold welding alarm, which is electrically connected to the controller and is configured to issue an alarm when it is determined that a cold weld occurs in the hydrogen pipe.

[0012] In a second aspect, an embodiment of the present application provides a high-frequency hydrogen pipe welding detection method, which includes the following steps:

[0013] Use multiple probes to obtain thermal imaging data of welds;

[0014] Determine whether cold welding occurs in the weld based on thermal imaging data;

[0015] When it is determined that cold welding occurs in the weld, welding is suspended, and after the delay spraying time, the cold welding position sprayer is controlled to spray.

[0016] In conjunction with the second aspect, in one embodiment, determining whether a cold weld occurs in the weld according to the thermal imaging data includes:

[0017] Convert thermal imaging data into RGB color values of each point in the thermal imaging;

[0018] Calculate the RGB value points K1 corresponding to the lower limit of the normal temperature and the RGB value points K2 corresponding to the lower limit of the normal temperature in the weld thermal imaging data in the selected area;

[0019] According to the RGB value points K1 and RGB value points K2, the proportion K3 of the RGB value points corresponding to the lower limit of the normal temperature is calculated;

[0020] Determine whether K3 is greater than the set threshold B. If so, cold welding occurs in the weld in the selected area; otherwise, no cold welding occurs.

[0021] In conjunction with the second aspect, in one embodiment, the step of obtaining the set threshold B includes:

[0022] After producing multiple batches of hydrogen pipes using the above-mentioned high-frequency hydrogen pipe welding detection device, the thermal imaging data of the welding saved during the production process of each batch of hydrogen pipes, the set threshold B used by the process personnel during the production of each batch of hydrogen pipes, and the welding sampling results of each batch of hydrogen pipes are analyzed to obtain the final set threshold B.

[0023] In conjunction with the second aspect, in one embodiment, the method for calculating the delayed marking time includes:

[0024] The traveling speed V of the hydrogen transmission pipe and the distance L between the thermal imaging device and the cold welding position marking device are obtained, and the delayed marking time is calculated based on the traveling speed V and the distance L.

[0025] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0026] By setting up a circulating water cooling component around multiple probes in the thermal imaging device, the multiple probes can dissipate heat in a timely and sufficient manner, ensuring that the multiple probes can withstand high temperatures and can work for a long time under high temperature conditions. The thermal imaging device can detect the weld condition of the hydrogen pipe during the welding process online and determine whether the weld is cold welded. This solves the technical problem in the related technology that in the manufacturing process of high-frequency hydrogen steel pipes, ultrasonic detection technology and eddy current flaw detection technology mainly detect the welds after cooling, and cannot detect in real time whether there is a cold welding problem in the weld during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 A schematic diagram of the principle of a high-frequency hydrogen pipe welding detection device provided in an embodiment of the present application;

[0029] Figure 2 Schematic diagram of the principles of the thermal imaging device and circulating water cooling assembly provided in an embodiment of the present application;

[0030] Figure 3 Schematic diagram of the principle of the pressure sensor and circulating water cooling assembly provided in the embodiment of the present application;

[0031] Figure 4 A schematic flow chart of a high-frequency hydrogen pipe welding detection method provided in an embodiment of the present application.

[0032] In the figure: 1. Thermal imaging device; 101. Probe; 2. Hydrogen transmission pipe; 201. Weld; 3. Circulating water cooling assembly; 301. Water cooling pipe; 302. Water pump; 4. Cold welding position marker; 5. Controller; 6. Pressure sensor; 7. Speed sensor; 8. Cold welding alarm; 9. Acquisition card; 10. PLC module; 11. Switch; 12. Water pump control cabinet; 13. PLC pulse board. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] The embodiments of the present application provide a high-frequency hydrogen pipe welding detection device and detection method, which can solve the technical problem that in the manufacturing process of high-frequency hydrogen steel pipes, ultrasonic detection technology and eddy current flaw detection technology mainly detect the welds after cooling, and cannot detect in real time whether there is a cold welding problem in the welds during the welding process.

[0035] See also Figure 1 and Figure 2 As shown, an embodiment of the present application provides a high-frequency hydrogen pipe welding detection device, which includes: a thermal imaging device 1, a cold welding position marker 4 and a controller 5, wherein the thermal imaging device 1 is used to be installed above the hydrogen pipe 2 and detect thermal imaging data of the weld 201 of the hydrogen pipe 2, and the thermal imaging device 1 includes multiple probes 101, and the thermal imaging device 1 is provided with a circulating water cooling component 3 around the multiple probes 101; the cold welding position marker 4 is used to be installed above the hydrogen pipe 2, and the cold welding position marker 4 is spaced apart from the thermal imaging device 1; the controller 5 is electrically connected to the multiple probes 101 and the cold welding position marker 4, and the controller 5 is used to determine whether cold welding occurs in the hydrogen pipe 2 according to the thermal imaging data of the multiple probes 101, and when it is determined that cold welding occurs in the hydrogen pipe 2, the cold welding position marker 4 is controlled to perform marking.

[0036] In this embodiment, the plurality of probes 101 are electrically connected to the controller 5 through the acquisition card 9, the cold welding position sprayer 4 is electrically connected to the controller 5 through the PLC module 10, the PLC module 10 is electrically connected to the plurality of probes 101 and the cold welding position sprayer 4 through a signal cable, the controller 5 is electrically connected to the plurality of probes 101 and the cold welding position sprayer 4 through a switch 11, the switch 11 is electrically connected to the controller 5, the acquisition card 9 and the PLC module 10 through a network cable, the controller 5 can be set as an industrial computer, The controller 5 determines whether cold welding occurs in the hydrogen transmission pipe 2 based on the thermal imaging data of the multiple probes 101. When it is determined that cold welding occurs in the hydrogen transmission pipe 2, the controller 5 controls the cold welding position marker 4 to spray a mark at the cold welding position of the hydrogen transmission pipe 2. The thermal imaging device 1 is provided with the circulating water cooling component 3 around the multiple probes 101 to increase the temperature tolerance of the thermal imaging device 1, thereby realizing online detection of the weld 201 of the hydrogen transmission pipe 2 during the welding process and determining whether cold welding occurs in the weld 201. The temperature tolerance of the thermal imaging device 1 can be set to 1300-1450°C.

[0037] In this embodiment, the circulating water cooling assembly 3 is arranged around the multiple probes 101 in the thermal imaging device 1, so that the multiple probes 101 can dissipate heat in a timely and sufficient manner, ensuring that the multiple probes 101 can withstand high temperatures and can work for a long time under high temperature conditions. The thermal imaging device 1 can online detect the weld 201 of the hydrogen transmission pipe 2 during the welding process and determine whether the weld 201 is cold welded. This solves the technical problem in the related art that in the manufacturing process of high-frequency hydrogen transmission steel pipes, ultrasonic detection technology and eddy current flaw detection technology mainly detect the weld 201 after cooling and cannot detect in real time whether the weld 201 during the welding process has a cold weld problem.

[0038] Further, see Figure 1 and Figure 2 As shown, in some embodiments, the circulating water cooling assembly 3 includes a water cooling pipe 301 and a water pump 302, the water pump 302 is connected to the water cooling pipe 301, the water pump 302 is electrically connected to the controller 5, and the water cooling pipe 301 is cross-wound between multiple probes 101.

[0039] In this embodiment, the motor of the water pump 302 is electrically connected to the controller 5 through the water pump control cabinet 12. The water pump 302 controls the water output of the water cooling pipe 301. The water cooling pipe 301 is cross-wound between the multiple probes 101, thereby effectively cooling the multiple probes 101 during the high-temperature welding process, thereby ensuring the normal use of the thermal imaging device 1 during the high-temperature welding process.

[0040] Further, see Figure 1-3 As shown, in some embodiments, the distance between each probe 101 and the weld 201 is set to 100 to 150 mm, and multiple probes 101 are used to be evenly distributed along the width direction of the weld 201 of the hydrogen transmission pipe 2, and the water-cooling tube 301 is wound in an S shape between the multiple probes 101.

[0041] In this embodiment, the distance between each probe 101 and the weld 201 can be set to 100-150 mm. Preferably, the distance between each probe 101 and the weld 201 is set to 120 mm, so that each probe 101 can obtain thermal imaging data at the best position, ensuring that each probe 101 can work for a long time during high-temperature welding, and the clarity of the thermal imaging data obtained is high. For example, the plurality of probes 101 can be set to twenty probes 101, and the twenty probes 101 are arranged in two columns. The two columns of probes 101 are symmetrically arranged, and each column is provided with ten probes 101. 01, the ten probes 101 are evenly spaced along the width direction of the weld 201 of the hydrogen transmission pipe 2, and the angle between the lower end face of the probe 101 and the weld 201 can be set to 0-45°. The twenty probes 101 can cover the weld 201 of the hydrogen transmission pipe 2, so as to obtain the thermal imaging data of the weld 201 of the hydrogen transmission pipe 2 in real time. The water-cooling pipe 301 is arranged in an S shape between two adjacent rows of the probes 101 to ensure that each probe 101 can be cooled during the high-temperature welding process. At the same time, each probe 101 has sufficient heat dissipation space. The water-cooling pipe 301 can be set to a copper pipe.

[0042] Further, see Figure 1 and Figure 3 As shown, in some embodiments, a pressure sensor 6 is provided outside the water cooling pipe 301 .

[0043] In this embodiment, the pressure sensor 6 is arranged at the inlet of the water-cooling pipe 301. The pressure sensor 6 is electrically connected to the controller 5 through the PLC module 10 and the switch 11. The pressure sensor 6 measures the fluid pressure of the water-cooling pipe 301 and determines whether the water-cooling pipe 301 is congested based on the fluid pressure of the water-cooling pipe 301. If the water-cooling pipe 301 is congested, the water-cooling pipe 301 cannot cool down the multiple probes 101, and the high-frequency hydrogen pipe welding detection device automatically shuts down and alarms.

[0044] Further, see Figure 1 As shown, in some embodiments, the high-frequency hydrogen pipe welding detection device also includes a speed sensor 7, which is electrically connected to the controller 5. The speed sensor 7 is used to be installed under the hydrogen pipe 2 and measure the travel speed of the hydrogen pipe 2.

[0045] In this embodiment, the speed sensor 7 is electrically connected to the controller 5 through the PLC pulse board 13, and the speed sensor 7 is electrically connected to the PLC pulse board 13 through a signal cable. The speed sensor 7 is installed below the hydrogen transmission pipe 2 and measures the travel speed of the hydrogen transmission pipe 2.

[0046] Further, see Figure 1 As shown, in some embodiments, the high-frequency hydrogen pipe welding detection device also includes a cold welding alarm 8, which is electrically connected to the controller 5. The cold welding alarm 8 is used to issue an alarm when it is determined that cold welding occurs in the hydrogen pipe 2.

[0047] In this embodiment, the cold welding alarm 8 is electrically connected to the controller 5 through the PLC module 10 and the switch 11. The cold welding alarm 8 is electrically connected to the PLC module 10 through a signal cable. When the high-frequency hydrogen pipe welding detection device determines that a cold weld occurs in the hydrogen pipe 2, the cold welding alarm 8 sends an alarm signal and reminds production staff to suspend welding and adjust the welding process.

[0048] See also Figure 4 As shown, the embodiment of the present application provides a high-frequency hydrogen pipe welding detection method, which includes the following steps:

[0049] S1: Acquire thermal imaging data of the weld 201 using multiple probes 101 .

[0050] S2: Determine whether cold welding occurs in the weld 201 based on the thermal imaging data.

[0051] S3: When it is determined that the weld 201 is cold welded, the welding is suspended, and after a delay in marking time, the cold weld position marking device 4 is controlled to perform marking.

[0052] In this embodiment, the thermal imaging device 1 is installed above the weld 201 of the hydrogen transmission pipe 2, and the self-test is started through the industrial control computer. The high-frequency hydrogen transmission pipe welding detection device will automatically detect whether each of the probes 101, the water-cooling pipe 301, the cold welding position sprayer 4 and the speed sensor 7 are normal. When the high-frequency hydrogen transmission pipe welding detection device is normal, the water pump 302 is started through the switch 11 and the PLC module 10, and then the acquisition card 9 is started. Then, the acquisition card 9 obtains the thermal imaging data collected by the multiple probes 101 in real time, and determines whether the weld 201 is cold welded according to the thermal imaging data. When it is determined that the weld 201 is cold welded, the welding is suspended for a period of time, and the cold welding position sprayer 4 is controlled to spray.

[0053] Further, see Figure 4 As shown, in some embodiments, determining whether cold welding occurs in the weld 201 based on the thermal imaging data includes:

[0054] S201: Convert the thermal imaging data into the color RGB value of each point in the thermal imaging.

[0055] S202: Calculate the number of RGB value points K1 corresponding to the lower limit of the normal temperature and the number of RGB value points K2 corresponding to the lower limit of the normal temperature in the thermal imaging data of the weld 201 in the selected area.

[0056] S203: Calculate the proportion K3 of the RGB value points corresponding to the lower limit of the normal temperature based on the RGB value points K1 and the RGB value points K2.

[0057] S204: Determine whether K3 is greater than a set threshold value B. If so, cold welding occurs in the weld 201 in the selected area; otherwise, no cold welding occurs.

[0058] In this embodiment, multiple probes 101 acquire thermal imaging data of the weld 201. The thermal imaging data is presented as a thermal energy image. The cold welding problem of the weld 201 can be preliminarily predicted by the thermal energy image. The thermal imaging data is transmitted to the acquisition card 9 and input into the controller 5. The thermal imaging data is converted into the color RGB value of each point of the thermal imaging. Exemplarily, the minimum temperature of 800°C corresponds to black in the thermal imaging data, and the maximum temperature of 1100°C corresponds to white in the thermal imaging data. The welding temperature X of normal welding usually fluctuates within the range of X±20°C. The welding temperature X of normal welding depends on the welding process of each batch of hydrogen transmission pipes 2. The number of RGB value points K1 corresponding to the lower limit of the normal temperature (X-20)°C and the number of RGB value points K2 corresponding to the lower limit of the normal temperature (X-20)°C in the thermal imaging data of the weld 201 in the selected area are calculated. The calculation formula for the proportion K3 of the number of RGB value points corresponding to the lower limit of the normal temperature is as follows:

[0059] K3=K1 / (K1+K2) (1),

[0060] Substituting the RGB value points K1 and K2 into formula (1) can calculate the proportion K3 of the RGB value points corresponding to the lower limit of the normal temperature. When K3 is greater than the set threshold B, cold welding occurs in the weld 201 in the selected area. When K3 is less than or equal to the set threshold B, cold welding does not occur in the weld 201 in the selected area. By comparing K3 with the set threshold B, the cold welding problem can be further confirmed.

[0061] Furthermore, in some embodiments, the step of obtaining the set threshold value B includes:

[0062] After producing multiple batches of hydrogen transmission pipes 2 using the above-mentioned high-frequency hydrogen transmission pipe welding detection device, the thermal imaging data of the welding saved during the production process of each batch of hydrogen transmission pipes 2, the set threshold B used by the process personnel during the production process of each batch of hydrogen transmission pipes 2, and the welding sampling results of each batch of hydrogen transmission pipes 2 are analyzed to obtain the final set threshold B.

[0063] In this embodiment, the set threshold value B can be obtained in the following two ways. The first way is to input the sampling results of the cross section of the weld 201 of each batch of hydrogen transmission pipes 2 into the controller 5. The controller 5 performs self-learning after accumulating a certain number of samples. During the learning process of the controller 5, the thermal imaging data saved during the production process of each batch of hydrogen transmission pipes 2, the set threshold value B used by the process personnel during the production process of each batch of hydrogen transmission pipes 2, and the welding sampling results of each batch of hydrogen transmission pipes 2 are subjected to software model analysis to obtain the optimized set threshold value B, which is the final set threshold value B. The second way is to obtain the set threshold value B based on the experience of the production staff. By way of example, the set threshold value B can be set to 30%.

[0064] Furthermore, in some embodiments, the method for calculating the delayed marking time includes:

[0065] The traveling speed V of the hydrogen transmission pipe 2 and the distance L between the thermal imaging device 1 and the cold welding position marking device 4 are obtained, and the delayed marking time is calculated based on the traveling speed V and the distance L.

[0066] In this embodiment, the calculation formula of the delayed marking time Y is as follows:

[0067] Y=L / V (2),

[0068] The speed sensor 7 is used to measure the travel speed V of the hydrogen transmission pipe 2, and the distance L between the thermal imaging device 1 and the cold welding position marker 4 is measured. The travel speed V and the distance L are substituted into formula (2) to calculate the delayed marking time Y. When it is determined that the weld 201 is cold welded, the welding is suspended, and the hydrogen transmission pipe 2 continues to move and moves to the bottom of the cold welding position marker 4 after the delayed marking time Y. The cold welding position marker 4 is controlled to spray to mark the cold welding position of the hydrogen transmission pipe 2.

[0069] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0070] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0071] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A high-frequency hydrogen pipe welding detection device, characterized in that: It includes: A thermal imaging device, the thermal imaging device is used to be installed above the hydrogen transmission pipe and detect thermal imaging data of the weld of the hydrogen transmission pipe, the thermal imaging device includes multiple probes, and the thermal imaging device is provided with a circulating water cooling assembly around the multiple probes; A cold welding position marking device, the cold welding position marking device is used to be installed above the hydrogen transmission pipe, and the cold welding position marking device is spaced apart from the thermal imaging device; A controller is electrically connected to the plurality of probes and the cold weld position marking device. The controller is used to determine whether a cold weld occurs in the hydrogen transmission pipe based on the thermal imaging data of the plurality of probes. When it is determined that a cold weld occurs in the hydrogen transmission pipe, the controller controls the cold weld position marking device to perform marking.

2. The high-frequency hydrogen pipe welding detection device according to claim 1, characterized in that: The circulating water cooling component includes a water cooling pipe and a water pump. The water pump is connected to the water cooling pipe, and the water pump is electrically connected to the controller. The water cooling pipe is cross-wound between the multiple probes.

3. The high-frequency hydrogen pipe welding detection device according to claim 2, characterized in that: The distance between each probe and the weld is set to 100 to 150 mm, and the multiple probes are used to be evenly distributed along the width direction of the weld of the hydrogen transmission pipe. The water cooling pipe is wound in an S shape between the multiple probes.

4. The high-frequency hydrogen pipe welding detection device according to claim 2, characterized in that: A pressure sensor is provided outside the water cooling pipe.

5. The high-frequency hydrogen pipe welding detection device according to claim 1, characterized in that: The high-frequency hydrogen transmission pipe welding detection device further includes a speed sensor, which is electrically connected to the controller and is used to be installed below the hydrogen transmission pipe and measure the travel speed of the hydrogen transmission pipe.

6. The high-frequency hydrogen pipe welding detection device according to claim 1, characterized in that: The high-frequency hydrogen pipe welding detection device further includes a cold welding alarm, which is electrically connected to the controller and is configured to issue an alarm when it is determined that a cold weld occurs in the hydrogen pipe.

7. A high-frequency hydrogen pipe welding detection method using the high-frequency hydrogen pipe welding detection device according to any one of claims 1 to 6, characterized in that: It includes the following steps: Use multiple probes to obtain thermal imaging data of welds; Determine whether cold welding occurs in the weld based on thermal imaging data; When it is determined that cold welding occurs in the weld, welding is suspended, and after the delay spraying time, the cold welding position sprayer is controlled to spray.

8. The high-frequency hydrogen pipe welding detection method according to claim 7, characterized in that: The method of judging whether a cold weld occurs in the weld according to the thermal imaging data includes: Convert thermal imaging data into RGB color values of each point in the thermal imaging; Calculate the RGB value points K1 corresponding to the lower limit of the normal temperature and the RGB value points K2 corresponding to the lower limit of the normal temperature in the weld thermal imaging data in the selected area; According to the RGB value points K1 and RGB value points K2, the proportion K3 of the RGB value points corresponding to the lower limit of the normal temperature is calculated; Determine whether K3 is greater than the set threshold B. If so, cold welding occurs in the weld in the selected area; otherwise, no cold welding occurs.

9. The high-frequency hydrogen pipe welding detection method according to claim 8, characterized in that: The step of obtaining the threshold value B includes: After producing multiple batches of hydrogen pipes using the above-mentioned high-frequency hydrogen pipe welding detection device, the thermal imaging data of the welding saved during the production process of each batch of hydrogen pipes, the set threshold B used by the process personnel during the production of each batch of hydrogen pipes, and the welding sampling results of each batch of hydrogen pipes are analyzed to obtain the final set threshold B.

10. The high-frequency hydrogen pipe welding detection method according to claim 7, characterized in that: The method for calculating the delayed marking time includes: The traveling speed V of the hydrogen transmission pipe and the distance L between the thermal imaging device and the cold welding position marking device are obtained, and the delayed marking time is calculated based on the traveling speed V and the distance L.

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