Optical detection system for gas components in stabilizer welding tool

Abstract

The invention relates to the technical field of welding, in particular to an optical detection system for gas components in a stabilizer welding tool, a welding tool box and a gas adding system are prepared, and an upper plate of the welding tool box is provided with an operation window; the welding tool box is provided with a glass window; the gas component detection system comprises a beam splitter and a movable reflecting mirror, and a light path between the beam splitter and the movable reflecting mirror penetrates through the glass window; a metal net cylinder is arranged between the opposite glass windows of the welding tool box; a light path penetrates through the hollow part of the metal net cylinder; the gas component detection system further comprises an interference path stroke difference adjusting system; the interference path stroke difference adjusting system comprises a glass container, and the glass container is arranged on a light path between the beam splitter and the movable reflector; the interference path stroke difference adjusting system further comprises an air pump, and the air pump is connected with a sulfur hexafluoride gas source. Therefore, the stability of argon in the welding tool box is ensured, and the welding quality of the stabilizer is improved.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and particularly to an internal gas detection system for a stabilizer welding tooling. Background Art

[0002] A flame stabilizer is a device used to maintain a stable flame in a combustion device. In combustion devices that require stable combustion, it is an essential facility. During the casting process of the flame stabilizer, some cracks and pores may occur. After removing these defects, different components of the flame stabilizer need to be welded together with the assistance of argon arc welding, and argon gas is required as a shielding gas during welding.

[0003] Due to the special structure of the stabilizer, during argon arc welding, the metal on the back of the stabilizer may be oxidized, and argon gas will quickly escape during the welding process. Since it is difficult to detect the change of the gas around the stabilizer during welding, the welding stability of the stabilizer is difficult to control. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] An optical detection system for the gas components inside a stabilizer welding tooling, a welding tooling box for preparing to weld the stabilizer, and a gas addition system for adding argon gas. The gas addition port of the gas addition system is connected to the inner cavity of the welding tooling box. The welding tooling box is provided with a detachable upper plate, and the upper plate is provided with an operation window for welding operations. Windows are respectively provided on two opposite side walls of the welding tooling box, and the windows on the two opposite side walls are arranged opposite to each other. The windows are arranged at a position close to the bottom side of the welding tooling box. It further includes a gas component detection system, and the gas component detection system includes a beam splitter and a moving mirror. The optical path between the beam splitter and the moving mirror passes through the relatively arranged windows. A metal mesh cylinder is arranged between the relatively arranged windows of the welding tooling box, and the surface of the metal mesh cylinder is set as a black matte surface. The optical path in the welding tooling box between the beam splitter and the moving mirror passes through the hollow part of the metal mesh cylinder. The gas component detection system further includes an interference path travel difference adjustment system. The interference path optical path difference adjustment system includes a glass container containing sulfur hexafluoride. Both ends of the glass container are flat and transparent, and the glass container is arranged on the optical path between the beam splitter and the moving mirror. The interference path optical path difference adjustment system further includes an air pump for adjusting the air pressure in the glass container, and the air pump is connected to a sulfur hexafluoride gas source.

[0006] The gas component detection system is an interferometer detection system. By utilizing the optical path difference of the interferometer and observing the change of the interference fringes, the influence of different components in the gas sample on the refractive index, absorption or scattering of light is detected.

[0007] Gas component detection and adjustment process: S1: Fill the welding tooling box with argon at a standard concentration, and use the argon at the standard concentration to calibrate the gas component detection system. First, mechanically adjust the moving mirror to adjust the optical path difference between the beam splitter and the moving mirror to obtain a rough interference image. S2: Adjust the sulfur hexafluoride air pressure in the glass container through the air pump. By using the physical property that the speed of light in air is greater than that in sulfur hexafluoride, precisely adjust the optical path difference to adjust the rough interference image to obtain a standard interference image. S3: Install the welding tooling box into the stabilizer component for welding. The gas component detection system detects the gas in the welding tooling box through the glass window to obtain the actual interference image. Argon will be continuously consumed and other gases will be generated during the welding process. The actual interference image changes due to the change of the gas composition in the welding tooling box. The gas addition system adds argon to increase the argon concentration and adjusts the actual interference image to be approximately the standard interference image, completing the adjustment of the argon concentration in the welding tooling box.

[0008] The refractive index of air is about 1.0003, and the speed of light in air is generally taken as 3×10 8 m / s.

[0009] The refractive index of light in the gas state of sulfur hexafluoride at 25°C is approximately 1.00087, and the speed of light at this time is about 2.9987×10 8 m / s. The actual value will vary slightly due to pressure, purity and specific temperature. In a fixed container, the higher the concentration of sulfur hexafluoride, the higher the refractive index and the slower the speed of light.

[0010] After the gas concentration of sulfur hexafluoride in the fixed container at 25°C is increased by 10 times, the refractive index of light is about 1.0087, and the speed of light is 2.973×10 8 m / s. The difference in the speed of light from the normal state is 0.0257×10 8m / s. If the distance between the two ends of the glass container is 10 cm, it is equivalent to a displacement of the moving mirror of 0.39 mm. It can achieve a relatively large amount of gas adjustment, with a small optical path difference adjustment between the beam splitter and the moving mirror. High-precision optical path difference adjustment can be achieved, and the accuracy of the obtained standard interference image is higher.

[0011] In the above design, welding the stabilizer in the welding tooling box reduces the escape of argon gas, reduces the possible oxidation of the metal on the back of the stabilizer, and improves the welding quality. The operation window facilitates the discharge of the fumes and waste gas generated during the welding operation and the welding process.

[0012] During the welding process, argon gas is continuously added through the gas addition system to maintain the stability of the gas around the stabilizer in the welding tooling box, and the waste gas and fumes are discharged from the operation window. When the concentration of argon gas in the welding tooling box changes, the gas component detection system can more accurately measure the change in the gas components in the welding tooling box by comparing the actual interference image and the standard interference image. The argon gas concentration controlled by the gas addition system is more accurate, the gas components of argon gas in the welding tooling box are more stable, the quality of the stabilizer welding is improved, and there is no need to fill a large amount of argon gas into the welding tooling box to maintain the argon gas environment, reducing the waste of argon gas.

[0013] TIG welding will generate high-intensity light during welding, and the high-intensity light will interfere with the light beam of the interferometer, resulting in blurred or distorted interference fringes. Moreover, the fumes generated during welding will also affect the interference light beam between the beam splitter and the moving mirror. The metal mesh cylinder covers the optical path between the beam splitter and the moving mirror in the welding tooling box. The metal mesh cylinder can block the fumes outside, preventing the fumes from blocking the light beam between the beam splitter and the moving mirror during the welding operation, and ensuring the stable operation of the gas component detection system. The black matte surface of the metal mesh cylinder can block the strong light during the TIG welding process, reduce the influence of the strong light during the welding operation on the measurement of the gas component detection system, and improve the measurement accuracy of the gas component detection system.

[0014] Preferably, the aperture of the mesh holes on the side wall of the metal mesh cylinder is 1-2 mm. This ensures that while the metal mesh cylinder can block the fumes, the gas can enter the inner cavity of the metal mesh cylinder through the side wall of the metal mesh cylinder.

[0015] Preferably, there are at least two gas addition ports, and the at least two gas addition ports extend into the inner cavity of the welding tooling box from different sides of the welding tooling box respectively. This ensures the uniformity of argon gas filling.

[0016] Preferably, a light-shielding plate is provided above the metal mesh cylinder. The light-shielding plate is made of stainless steel, and its surface is provided with a black matte surface. The metal mesh cylinder has at least two layers, and the holes of adjacent metal mesh cylinders are staggered from each other. The light-shielding plate and the at least two layers of metal mesh cylinders can block the strong light generated during argon arc welding operations, and the light-shielding plate can also block some welding slag or other sundries from falling onto the metal mesh cylinder, ensuring the stability of the metal mesh cylinder structure.

[0017] Preferably, an air inlet channel and an air outlet channel are respectively provided at both ends of the metal mesh cylinder. The air inlet channel and the air outlet channel penetrate through two layers of the metal mesh cylinder to connect the inside and outside of the metal mesh cylinder. An air inlet fan is provided in the air inlet channel. The air inlet and outlet of the air inlet fan face the inside of the metal mesh cylinder, and the air intake and suction ports of the air inlet fan face the outside of the metal mesh cylinder. An air outlet fan is provided in the air outlet channel. The air outlet and outlet of the air outlet fan face the outside of the metal mesh cylinder, and the air intake and suction ports of the air outlet fan face the inside of the metal mesh cylinder. The air inlet fan and the air outlet fan drive the flow of gas inside the metal mesh cylinder, ensuring the uniform diffusion of gas in the welding tooling box, especially the gas in the optical path accessories between the beam splitter and the movable mirror. The argon concentration or gas component accuracy measured by the gas component detection system is higher, and the argon concentration or gas component reflected by the actual interference image is more accurate.

[0018] Preferably, a light-shielding cover is provided at the opening of the air inlet channel on the outside of the metal mesh cylinder. At least part of the light-shielding cover forms a gas flow channel with the side wall of the air inlet channel. A filter screen is provided in the channel. Another light-shielding cover is provided at the opening of the air outlet channel on the outside of the metal mesh cylinder. At least part of the other light-shielding cover forms another gas flow channel with the side wall of the air outlet channel. Another filter screen is provided in the other channel. The surfaces of the light-shielding cover and the other light-shielding cover are both set to black matte surfaces. By providing the light-shielding cover and the other light-shielding cover, it is possible to prevent the strong light during argon arc welding from entering the inner cavity of the metal mesh barrel through the air inlet channel or the air outlet channel, reducing the influence of strong light on the measurement of the gas component detection system during welding operations. The filter screen and the other filter screen filter the flue gas to prevent the flue gas from blocking the light beam in the metal mesh cylinder and affecting the operation of the gas component detection system.

[0019] Preferably, a pressure relief pipe is provided on the side wall of the glass container. A pressure relief valve is provided in the pressure relief pipe, and the pressure relief pipe is connected to a gas recovery system. The glass container is also provided with a pressure sensor, and the sensing end of the pressure sensor is arranged in the glass container. The interference path travel difference adjustment system further includes a temperature control system for controlling the temperature of sulfur hexafluoride in the glass container. The temperature control system includes an electric heating wire and a water cooling pipe wound around the glass container. The temperature control system also includes an infrared thermal sensor, and the sensing end of the infrared thermal sensor points to the inner cavity of the glass container.

[0020] Through the pressure relief pipeline, it is convenient to relieve the pressure and exhaust the sulfur hexafluoride gas in the glass container, and it is convenient to adjust the concentration of the glass container. The gas recovery device can recover sulfur hexafluoride to save costs. The air pressure sensor measures the air pressure and calculates the concentration of sulfur hexafluoride gas in the glass container, thereby improving the control accuracy of the change in the gas concentration in the glass container. The sulfur hexafluoride concentration is obtained by measuring the air pressure with a pressure sensor, and the air pressure change of the glass container will vary with the temperature change. After the concentration of the glass container increases, the temperature will increase. According to the temperature measured by the infrared thermal sensor, the temperature of the glass container can be increased through the heating wire, or the temperature of the glass container can be decreased through the water cooling pipe, adjusting the glass container to maintain the temperature of sulfur hexafluoride in the glass container constant, improving the measurement accuracy of the air pressure sensor, thereby improving the accuracy of the sulfur hexafluoride gas concentration adjustment and making the measurement accuracy of the gas component detection system higher. Heat the glass container according to the temperature measured by the infrared thermal sensor to maintain the temperature of sulfur hexafluoride in the glass container constant and ensure the accurate control of the glass container concentration.

[0021] Furthermore, the temperature control system further includes a heat insulation layer wrapped outside the glass container, and the heat insulation layer wraps the heating wire and the water cooling pipe; the heat insulation layer avoids both ends of the glass container; the glass at both ends of the glass container uses vacuum heat insulation glass. The heat insulation layer reduces the influence of the external temperature on the temperature change of the glass container, reduces the temperature fluctuation of the glass container, and improves the accuracy of the sulfur hexafluoride gas concentration adjustment.

[0022] Preferably, when welding, polluted gas is generated. The polluted gas is detected by the gas component detection system. When the detected polluted gas exceeds the standard, welding is stopped and exhaust is carried out. After exhaust, new argon gas is introduced. Prevent the polluted gas from affecting the welding quality of the stabilizer.

[0023] Preferably, the argon gas concentration is detected by the gas component detection system. When the detected argon gas concentration is too low, argon gas is introduced for supplementation. Ensure the effective coverage of the stabilizer by argon gas and prevent the oxidation of the back of the stabilizer from affecting the welding quality.

[0024] Preferably, an optical path reflection system is further provided. The optical path reflection system includes two sets of mirror groups that are oppositely reflected; the first mirror group includes at least two mirrors with a 90-degree included angle arrangement of the reflection surfaces; after the light beam in the optical path irradiates the mirrors of the first mirror group, it is reflected to another mirror with a 90-degree included angle arrangement, forming a parallel reflected light beam, and then irradiating to the second mirror group, forming a parallel reflected light beam again; thereby increasing the light speed travel in the glass container to more than 3 times. Allowing the length of the glass container to be shorter.

[0025] Preferably, the glass container is a flat glass container; at least two groups of reflectors are provided on one side of the glass container; the at least two groups of reflectors are arranged along the extension direction of the flat structure of the glass container. While increasing the optical path, the volume of the glass container and the amount of contained gas used are reduced.

[0026] Preferably, another glass window is respectively provided on two opposite side walls of the welding tooling box; the two opposite another glass windows are oppositely arranged; further included is another gas component detection system, and the another gas component detection system includes another movable reflector and another beam splitter; the optical path between the another movable reflector and the another beam splitter is parallel to the optical path between the beam splitter and the movable reflector, and the interval is greater than 100 mm. The two sets of gas component detection systems share a microprocessor system, so as to form two standard interference images, and the two standard interference images can be compared and calibrated with each other, further improving the accuracy and avoiding uneven gas diffusion in the welding tooling box, which affects the measurement effect.

[0027] Preferably, at least one gas collecting hood is provided above the baffle plate, and the large end of the gas collecting hood faces the operation window; an air suction pipe is provided on the gas collecting hood, one end of the air suction pipe is communicated with a vacuum pump, and the other end of the air suction pipe is communicated with the small end of the gas collecting hood; further included is a gas storage air bag, and the air outlet of the vacuum pump is communicated with the gas storage air bag. The argon gas, fumes and polluted gas generated by welding emerging from the operation window are recovered, environmental pollution is reduced, and argon gas is recovered to save costs.

[0028] Preferably, an extension cap and another extension cap are provided on both sides of the welding tooling box, the extension cap covers the reflector and the another movable reflector, and the extension cap covers the beam splitter and the another beam splitter. The gas component detection system and the another gas component detection system are protected by the extension cap and the another extension cap to ensure that they are not affected by pollutants during the welding operation.

[0029] In summary, the present invention has the following beneficial effects: By comparing the actual interference image detected by the gas component detection system with the standard interference image, when the actual interference image is approximated to the standard interference image, the difference between the actual argon concentration and gas components and the standard argon concentration is determined, so as to accurately control the argon gas to ensure the stability of the argon gas environment during the welding of the stabilizer, improve the welding quality of the stabilizer, and without filling a large amount of argon gas into the welding tooling box to maintain the argon gas environment, reducing the waste of argon gas.

[0030] By providing the metal mesh cylinder, the black frosted surface of the metal mesh cylinder can block the strong light during the argon arc welding process, reduce the influence of the strong light during the welding operation on the measurement of the gas component detection system, and improve the measurement accuracy of the gas component detection system. The metal mesh cylinder can block the fumes outside, prevent the fumes from blocking the light beam between the beam splitter and the movable reflector during the welding operation, and ensure the stable operation of the gas component detection system. Brief Description of the Drawings

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them: Figure 1 Schematic diagram of the internal structure of the welding tooling box of the optical detection system for the internal gas components of the stabilizer welding tooling of the present invention; Figure 2 Schematic diagram of the appearance of the welding tooling box of the optical detection system for the internal gas components of the stabilizer welding tooling of the present invention; Figure 3 Schematic diagram of the structure of the opened upper plate of the welding tooling box of the optical detection system for the internal gas components of the stabilizer welding tooling of the present invention; Figure 4 Schematic diagram of the internal structure principle of the glass container of the optical detection system for the internal gas components of the stabilizer welding tooling of the present invention.

[0032] In the figure, 1. Welding tooling box; 11. Upper plate; 12. Glass window; 13. Metal mesh cylinder; 14. Light-shielding plate; 2. Beam splitter; 3. Moving mirror; 4. Air pump; 5. Sulfur hexafluoride gas source; 6. Glass container; 61. First mirror group; 62. Second mirror group; 7. Gas addition port. Detailed Embodiments

[0033] To make the above objects, features, and advantages of the present invention more understandable, the following will provide a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings of the specification.

[0034] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0035] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0036] Next, the so-called "one embodiment" or "embodiment" herein refers to specific features, structures or characteristics that may be included in less than one implementation manner of the present invention. The phrase "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is separate or selectively mutually exclusive with other embodiments.

[0037] Embodiment 1, refer to Figures 1-4 , an optical detection system for the gas components inside the stabilizer welding tooling, a welding tooling box 1 for preparing to weld the stabilizer, and a gas addition system for adding argon. The gas addition port 7 of the gas addition system is connected to the inner cavity of the welding tooling box 1.

[0038] The welding tooling box 1 is provided with a detachable upper plate 11, and the upper plate 11 is provided with an operation window for welding operations; On two opposite side walls of the welding tooling box 1, glass windows 12 are respectively provided. The glass windows 12 on the two opposite side walls are arranged opposite to each other, and the glass windows 12 are arranged at positions close to the bottom side of the welding tooling box 1; It further includes a gas component detection system. The gas component detection system includes a beam splitter 2 and a moving mirror 3. The optical path between the beam splitter 2 and the moving mirror 3 passes through the relatively arranged glass windows 12; A metal mesh cylinder 13 is arranged between the relatively arranged glass windows 12 of the welding tooling box 1, and the surface of the metal mesh cylinder 13 is set to be a black frosted surface; The optical path in the welding tooling box 1 between the beam splitter 2 and the moving mirror 3 passes through the hollow part of the metal mesh cylinder 13; The gas component detection system further includes an interference path path difference adjustment system; The interference path path difference adjustment system includes a glass container 6 containing sulfur hexafluoride. Both ends of the glass container 6 are flat and transparent, and the glass container 6 is arranged on the optical path between the beam splitter 2 and the moving mirror 3; The interference path path difference adjustment system further includes an air pump 4 for adjusting the air pressure in the glass container 6. The air pump 4 is connected to a sulfur hexafluoride gas source 5.

[0039] The gas component detection system is an interferometer detection system. By using the optical path difference of the interferometer and observing the change of interference fringes, the influence of different components in the gas sample on the refractive index, absorption or scattering of light is detected.

[0040] Gas component detection and adjustment process: S1: Fill the welding tooling box 1 with argon at a standard concentration, and use the argon at the standard concentration to calibrate the gas component detection system; First, mechanically adjust the moving mirror to adjust the optical path difference between the beam splitter 2 and the moving mirror 3 to obtain a rough interference image; S2: Adjust the sulfur hexafluoride gas pressure in the glass container 6 through the air pump 4. Utilize the physical property that the speed of light in air is greater than that in sulfur hexafluoride. Precisely adjust the optical path difference to regulate the rough interference image and obtain a standard interference image. S3: Load the stabilizer component into the welding tooling box 1 for welding. The gas component detection system detects the gas in the welding tooling box 1 through the glass window 12 port to obtain the actual interference image. Argon will be continuously consumed and other gases will be generated during the welding process. The actual interference image changes due to the change in the gas composition in the welding tooling box 1. The gas addition system adds argon to increase the argon concentration and adjust the actual interference image to be approximately the standard interference image, completing the adjustment of the argon concentration in the welding tooling box 1.

[0041] The refractive index of air is approximately 1.0003, and the speed of light in air is generally taken as 3×10 8 m / s.

[0042] The refractive index of light in sulfur hexafluoride in the gaseous state at 25°C is approximately 1.00087, and the speed of light at this time is about 2.9987×10 8 m / s. The actual value will vary slightly due to pressure, purity, and specific temperature. In a fixed container, the higher the sulfur hexafluoride concentration, the higher the refractive index and the slower the speed of light.

[0043] After the gas concentration of sulfur hexafluoride in the fixed container at 25°C is increased by 10 times, the refractive index of light is approximately 1.0087, and the speed of light is 2.973×10 8 m / s. The difference in the speed of light from the normal state is 0.0257×10 8 m / s. If the distance between the two ends of the glass container 6 is 10 cm, then it is equivalent to the moving mirror displacing 0.39 mm. It can achieve the adjustment of a relatively large amount of gas and a small adjustment of the optical path difference between the beam splitter 2 and the moving mirror. Achieve high-precision adjustment of the optical path difference and obtain a higher-precision standard interference image.

[0044] In the above design, welding the stabilizer in the welding tooling box 1 reduces the escape of argon, reduces the possible oxidation of the metal on the back of the stabilizer, and improves the welding quality. The operation window facilitates welding operations and the discharge of fumes and waste gases generated during the welding process.

[0045] During the welding process, argon gas is continuously added through the gas addition system to maintain the stability of the gas around the stabilizer in the welding tooling box 1, and the waste gas and fumes are discharged from the operation window. When the argon gas in the welding tooling box 1 changes in concentration, the gas component detection system can more accurately measure the change in the gas composition in the welding tooling box 1 by comparing the actual interference image and the standard interference image. The argon gas concentration controlled by the gas addition system is more accurate, and the gas composition of the argon gas in the welding tooling box 1 is more stable, improving the quality of the stabilizer welding. There is no need to fill a large amount of argon gas into the welding tooling box 1 to maintain the argon gas environment, reducing the waste of argon gas.

[0046] TIG welding will generate high-intensity light during welding, and the high-intensity light will interfere with the light beam of the interferometer, resulting in blurred or distorted interference fringes. Moreover, the fumes generated during welding will also affect the interference light beam between the beam splitter 2 and the moving mirror 3. The metal mesh cylinder 13 covers the optical path between the beam splitter 2 and the moving mirror 3 in the welding tooling box 1. The metal mesh cylinder 13 can block the fumes outside, preventing the fumes from blocking the light beam between the beam splitter 2 and the moving mirror 3 during welding operations, and ensuring the stable operation of the gas component detection system. The black matte surface of the metal mesh cylinder 13 can block the strong light during the TIG welding process, reducing the influence of the strong light on the measurement of the gas component detection system during welding operations, and improving the measurement accuracy of the gas component detection system.

[0047] The aperture of the mesh holes on the side wall of the metal mesh cylinder 13 is 1-2 mm. This ensures that while the metal mesh cylinder 13 can block the fumes, the gas can enter the inner cavity of the metal mesh cylinder 13 through the side wall of the metal mesh cylinder 13.

[0048] There are at least two gas addition ports 7, and at least two gas addition ports 7 extend into the inner cavity of the welding tooling box 1 from different sides of the welding tooling box 1 respectively. This ensures the uniformity of argon gas filling.

[0049] Pollution gas is generated during welding. The gas component detection system detects the pollution gas. When it detects that the pollution gas exceeds the standard, the welding is stopped and exhaust is carried out. After exhaust, new argon gas is introduced. This prevents the pollution gas from affecting the welding quality of the stabilizer.

[0050] The gas component detection system detects the argon gas concentration. When it detects that the argon gas concentration is too low, argon gas is introduced for supplementation. This ensures the effective coverage of the stabilizer by argon gas and prevents oxidation of the back of the stabilizer from affecting the welding quality.

[0051] An optical path reflection system is also provided. The optical path reflection system includes two sets of mirror groups that reflect light in opposite directions; the first mirror group 61 includes at least two mirrors with reflecting surfaces arranged at a 90-degree angle; after the light beam in the optical path irradiates the mirrors of the first mirror group 61, it is reflected to another mirror arranged at a 90-degree angle, forming a parallel reflected light beam, which then irradiates the second mirror group 62, forming a parallel reflected light beam again; thus, the light speed travel in the glass container 6 is increased to more than 3 times. The length of the glass container 6 is allowed to be shorter.

[0052] The glass container 6 is a flat glass container 6; at least two sets of mirror groups are arranged on one side of the glass container 6; the at least two sets of mirror groups are arranged along the extension direction of the flat structure of the glass container 6. While increasing the optical path, the volume of the glass container 6 and the amount of contained gas used are reduced.

[0053] During use, argon gas with a standard concentration is filled into the welding tooling box 1, and the gas component detection system is calibrated using the argon gas with the standard concentration to obtain a standard interference image. The stabilizer component is installed into the welding tooling box 1, and the gas component detection system detects the gas in the welding tooling box 1 through the glass window 12 to obtain an actual interference image. The metal mesh cylinder 13 blocks the fumes and can block the strong light during the argon arc welding process through its black frosted surface, improving the measurement accuracy of the gas component detection system. The argon gas concentration is detected by the gas component detection system, and when the detected argon gas concentration is too low, argon gas is introduced for supplementation. Polluted gas is generated during welding, and the polluted gas is detected by the gas component detection system. When the detected polluted gas exceeds the standard, welding is stopped for exhaust. After exhaust, new argon gas is introduced. This ensures the stability of the argon gas concentration in the welding tooling box 1, thereby improving the stability of the stabilizer welding.

[0054] Example 2, refer to Figure 2 and Figure 3 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment.

[0055] A light-shielding plate 14 is arranged above the metal mesh cylinder 13. The light-shielding plate 14 is a light-shielding plate 14 made of stainless steel metal, and the surface of the light-shielding plate 14 is provided with a black frosted surface; the metal mesh cylinder 13 has at least two layers, and the holes of adjacent layers of the metal mesh cylinder 13 are staggered from each other. The light-shielding plate 14 and the at least two layers of the metal mesh cylinder 13 can block the strong light generated during the argon arc welding operation, and the light-shielding plate 14 can also block some welding slag or other sundries from falling onto the metal mesh cylinder 13, ensuring the stability of the structure of the metal mesh cylinder 13.

[0056] Both ends of the metal mesh cylinder 13 are respectively provided with an air inlet channel and an air outlet channel. The air inlet channel and the air outlet channel pass through two layers of the metal mesh cylinder 13 to connect the inside and outside of the metal mesh cylinder 13. An air inlet fan is arranged in the air inlet channel. The air inlet and outlet of the air inlet fan face the inside of the metal mesh cylinder 13, and the air inlet suction port of the air inlet fan faces the outside of the metal mesh cylinder 13. An air outlet fan is arranged in the air outlet channel. The air outlet and outlet of the air outlet fan face the outside of the metal mesh cylinder 13, and the air outlet suction port of the air outlet fan faces the inside of the metal mesh cylinder 13. The air inlet fan and the air outlet fan drive the flow of the gas inside the metal mesh cylinder 13, ensuring the uniform diffusion of the gas in the welding tooling box 1, especially the gas of the optical path accessories between the beam splitter 2 and the movable mirror 3. The argon concentration or the accuracy of the gas components measured by the gas component detection system is higher, and the argon concentration or the gas components reflected by the actual interference image are more accurate.

[0057] The air inlet channel is provided with a light-shielding cover at the opening on the outside of the metal mesh cylinder 13. At least part of the light-shielding cover forms a gas flow channel with the side wall of the air inlet channel. A filter screen is arranged in the channel. The air outlet channel is provided with another light-shielding cover at the opening on the outside of the metal mesh cylinder 13. At least part of the another light-shielding cover forms another gas flow channel with the side wall of the air outlet channel. Another filter screen is arranged in the another channel. The surfaces of the light-shielding cover and the another light-shielding cover are both set as black frosted surfaces. By setting the light-shielding cover and the another light-shielding cover, the strong light during argon arc welding is prevented from entering the inner cavity of the metal mesh barrel through the air inlet channel or the air outlet channel, reducing the influence of the strong light during welding operation on the measurement of the gas component detection system. The filter screen and the another filter screen filter the fumes, preventing the fumes from blocking the light beam in the metal mesh cylinder 13 and affecting the operation of the gas component detection system.

[0058] The side wall of the glass container 6 is provided with a pressure relief pipeline. A pressure relief valve is arranged in the pressure relief pipeline, and the pressure relief pipeline is connected to a gas recovery system. The glass container 6 is also provided with a pressure sensor, and the sensing end of the pressure sensor is arranged in the glass container 6. The interference path travel difference adjustment system further includes a temperature control system for controlling the temperature of sulfur hexafluoride in the glass container 6. The temperature control system includes an electric heating wire and a water cooling pipe wound around the outside of the glass container 6. The temperature control system also includes an infrared thermal sensor, and the sensing end of the infrared thermal sensor points to the inner cavity of the glass container 6.

[0059] Through the air release pipeline, it is convenient to relieve the pressure and exhaust the sulfur hexafluoride gas in the glass container 6, and it is convenient to adjust the concentration of the glass container 6. The gas recovery device can recover sulfur hexafluoride to save costs. The air pressure sensor measures the air pressure and calculates the concentration of sulfur hexafluoride gas in the glass container 6, thereby improving the control accuracy of the change in the gas concentration in the glass container 6. The sulfur hexafluoride concentration is obtained by measuring the air pressure through the pressure sensor, and the air pressure change in the glass container 6 will vary with the temperature change. After the concentration of the glass container 6 increases, the temperature will increase. According to the temperature measured by the infrared thermal sensor, the temperature of the glass container 6 can be increased through the heating wire, or the temperature of the glass container 6 can be decreased through the water cooling pipe, and the temperature of the glass container 6 is adjusted to maintain the temperature of sulfur hexafluoride in the glass container 6 constant, improving the measurement accuracy of the air pressure sensor, thereby improving the accuracy of the sulfur hexafluoride gas concentration adjustment and making the measurement accuracy of the gas component detection system higher. Heat the glass container 6 according to the temperature measured by the infrared thermal sensor to maintain the temperature of sulfur hexafluoride in the glass container 6 constant and ensure the accurate control of the concentration of the glass container 6.

[0060] Furthermore, the temperature control system further includes a heat insulation layer wrapped outside the glass container 6, and the heat insulation layer wraps the heating wire and the water cooling pipe; the heat insulation layer avoids both ends of the glass container 6; the glass at both ends of the glass container 6 uses vacuum heat insulation glass. The heat insulation layer reduces the influence of the external temperature on the temperature change of the glass container 6, reduces the temperature fluctuation of the glass container 6, and improves the accuracy of the sulfur hexafluoride gas concentration adjustment.

[0061] On two opposite side walls of the welding tooling box 1, there are respectively provided another glass window 12, and the two opposite another glass windows 12 are arranged opposite to each other; there is also included another gas component detection system, and the another gas component detection system includes another movable reflecting mirror and another beam splitter 2; the optical path between the another movable reflecting mirror and the another beam splitter 2 is parallel to the optical path between the beam splitter 2 and the movable reflecting mirror 3, and the interval is greater than 100 mm. The two sets of gas component detection systems share a microprocessor system, thereby forming two standard interference images and two actual images. The two standard interference images can be compared and calibrated with each other to further improve the accuracy. The two actual images prevent the uneven diffusion of gas from affecting the measurement accuracy and avoid the uneven diffusion of gas in the welding tooling box 1 from affecting the measurement effect.

[0062] At least one gas collecting hood is arranged above the baffle plate, and the large end of the gas collecting hood faces the operation window; an air suction pipe is arranged on the gas collecting hood, one end of the air suction pipe is communicated with a vacuum pump, and the other end of the air suction pipe is communicated with the small end of the gas collecting hood; there is also included a gas storage air bag, and the air outlet of the vacuum pump is communicated with the gas storage air bag. The argon gas, fumes and polluting gases generated by welding emerging from the operation window are recovered, reducing environmental pollution and recovering argon gas to save costs.

[0063] On both sides of the welding tooling box 1, there are an extension cap and another extension cap. The extension cap covers the reflector and another movable reflector, and the extension cap covers the beam splitter 2 and another beam splitter 2. The gas component detection system and another gas component detection system are protected by the extension cap and another extension cap to ensure that they are not affected by pollutants during the welding operation.

[0064] During use, the light-shielding plate 14 and at least two layers of metal mesh cylinders 13 block the strong light generated during the TIG welding operation, preventing the gas component detection system from being affected by the strong light during the TIG welding operation and resulting in inaccurate imaging. The intake fan and the exhaust fan drive the flow of the gas inside the metal mesh cylinder 13, ensuring the uniform diffusion of the gas in the welding tooling box 1, especially the gas in the optical path accessories between the beam splitter 2 and the movable mirror 3. The filter screen and another filter screen filter the flue gas. The argon gas, flue gas, and pollution gas generated during welding emitted from the operation window are recovered, reducing environmental pollution and saving costs by recovering argon gas.

[0065] The glass container 6 measures the sulfur hexafluoride concentration by measuring the air pressure through the pressure sensor, and adjusts the sulfur hexafluoride concentration in the glass container 6 through the air release pipeline and the air pump 4. The temperature control system reduces the temperature fluctuation of the glass container 6, improving the accuracy of adjusting the gas concentration by measuring the air pressure of sulfur hexafluoride through the pressure sensor. Another gas component detection system forms two standard interference images, and the two standard interference images can be compared and calibrated with each other to further improve the accuracy.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. Optical detection system for internal gas components of a stabilizer welding tooling. Prepare a welding tooling box (1) for welding the stabilizer and a gas addition system for adding argon. The gas addition port (7) of the gas addition system is connected to the inner cavity of the welding tooling box (1). It is characterized in that: The welding tooling box (1) is provided with a detachable upper plate (11), and the upper plate (11) is provided with an operation window for welding operations. On two opposite side walls of the welding tooling box (1), there are respectively provided glass windows (12). The glass windows (12) on the two opposite side walls are arranged opposite to each other, and the glass windows (12) are arranged at a position close to the bottom side of the welding tooling box (1). It further includes a gas component detection system. The gas component detection system includes a beam splitter (2) and a moving mirror (3). The optical path between the beam splitter (2) and the moving mirror (3) passes through the relatively arranged glass windows (12). A metal mesh cylinder (13) is arranged between the relatively arranged glass windows (12) of the welding tooling box (1), and the surface of the metal mesh cylinder (13) is set as a black matte surface. The optical path in the welding tooling box (1) between the beam splitter (2) and the moving mirror (3) passes through the hollow part of the metal mesh cylinder (13). The gas component detection system further includes an interference path travel difference adjustment system. The interference path travel difference adjustment system includes a glass container (6) containing sulfur hexafluoride. Both ends of the glass container (6) are flat and transparent, and the glass container (6) is arranged on the optical path between the beam splitter (2) and the moving mirror (3). The interference path travel difference adjustment system further includes an air pump (4) for adjusting the air pressure in the glass container (6). The air pump (4) is connected to a sulfur hexafluoride gas source (5).

2. The internal gas component optical detection system for the stabilizer welding tooling according to claim 1, wherein: Above the metal mesh cylinder (13), there is provided a light shielding plate (14). The light shielding plate (14) is a light shielding plate (14) made of stainless steel metal, and the surface of the light shielding plate (14) is set as a black matte surface. The metal mesh cylinder (13) is provided with at least two layers, and the holes of adjacent layers of the metal mesh cylinder (13) are staggered from each other.

3. The optical detection system for internal gas components of the stabilizer welding tooling according to claim 2, wherein: Both ends of the metal mesh cylinder (13) are respectively provided with an air inlet channel and an air outlet channel. The air inlet channel and the air outlet channel pass through two layers of the metal mesh cylinder (13) to connect the inside and outside of the metal mesh cylinder (13). An air inlet fan is arranged in the air inlet channel. The air inlet and outlet of the air inlet fan face the inside of the metal mesh cylinder (13), and the air inlet suction port of the air inlet fan faces the outside of the metal mesh cylinder (13). An air outlet fan is arranged in the air outlet channel. The air outlet and outlet of the air outlet fan face the outside of the metal mesh cylinder (13), and the air outlet suction port of the air outlet fan faces the inside of the metal mesh cylinder (13).

4. The optical detection system for internal gas components of the stabilizer welding tooling according to claim 3, characterized in that: The air inlet channel is provided with a light shielding cover at the opening on the outside of the metal mesh cylinder (13). At least part of the light shielding cover forms a gas flow channel with the side wall of the air inlet channel. A filter screen is arranged in the channel. The air outlet channel is provided with another light shielding cover at the opening on the outside of the metal mesh cylinder (13). At least part of the another light shielding cover forms another gas flow channel with the side wall of the air outlet channel. Another filter screen is arranged in the another channel. The surfaces of the light shield and another light shield are both set to be black matte surfaces.

5. The internal gas component optical detection system of the stabilizer welding tooling according to claim 1, characterized in that: Pollution gases are generated during welding. The pollution gases are detected by a gas component detection system. When the detected pollution gases exceed the standard, welding is stopped, and exhaust is carried out. After exhaust, new argon gas is introduced.

6. The internal gas component optical detection system for the stabilizer welding tooling according to claim 1, wherein: The argon concentration is detected by a gas component detection system. When the detected argon concentration is too low, argon gas is introduced for supplementation.

7. The optical detection system for internal gas components of the stabilizer welding tooling according to claim 1, wherein: An optical path reflection system is also provided. The optical path reflection system includes two sets of mirror groups that reflect oppositely. The first mirror group (61) includes at least two mirrors with reflecting surfaces arranged at a 90-degree angle. After the light beam in the optical path irradiates the mirrors of the first mirror group (61), it is reflected to another mirror arranged at a 90-degree angle, forming a parallel reflected light beam, and then irradiates the second mirror group (62), forming a parallel reflected light beam again. Furthermore, the light speed travel in the glass container (6) is increased to more than 3 times.

8. The optical detection system for the internal gas components of the stabilizer welding tooling according to claim 1, wherein: The said glass container (6) adopts a flat glass container (6). At least two sets of mirror groups are arranged on one side of the glass container (6). At least two sets of mirror groups are arranged along the extension direction of the flat structure of the glass container (6).

9. The optical detection system for internal gas components of the stabilizer welding tooling according to claim 1, characterized in that: A vent pipe is provided on the side wall of the glass container (6). A pressure relief valve is provided in the vent pipe, and the vent pipe is connected to a gas recovery system. The glass container (6) is also provided with a pressure sensor, and the sensing end of the pressure sensor is arranged in the glass container (6). The interference path travel difference adjustment system also includes a temperature control system for controlling the temperature of sulfur hexafluoride in the glass container (6). The temperature control system includes an electric heating wire and a water cooling pipe wound around the glass container (6). The temperature control system also includes an infrared thermal sensor, and the sensing end of the infrared thermal sensor points to the inner cavity of the glass container (6).

10. The optical detection system for the internal gas components of the stabilizer welding tooling according to claim 1, wherein: Another glass window (12) is respectively provided on two opposite side walls of the welding tooling box (1), and the two opposite another glass windows (12) are arranged oppositely. It also includes another gas component detection system, and the another gas component detection system includes another movable mirror and another beam splitter (2). The optical path between the another movable mirror and the another beam splitter (2) is parallel to the optical path between the beam splitter (2) and the movable mirror (3), and the interval is greater than 100 mm.

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