Optical detection system for gas composition inside stabilizer welding tooling

Abstract

The present invention relates to the field of welding technology, and more particularly to an optical detection system for gas composition inside a stabilizer welding tool. The system comprises a welding tool box and a gas addition system. The upper plate of the welding tool box is provided with an operation window; the welding tool box is provided with a glass window; and a gas composition detection system. The gas composition detection system includes a beam splitter and a movable reflector, wherein the light path between the beam splitter and the movable reflector passes through the glass window; a metal mesh tube is provided between the opposing glass windows of the welding tool box; the light path passes through the hollow portion of the metal mesh tube; and the gas composition detection system also includes an interference path stroke difference adjustment system. The interference path stroke difference adjustment system includes a glass container provided on the light path between the beam splitter and the movable reflector; and the interference path stroke difference adjustment system also includes an air pump connected to a sulfur hexafluoride gas source. This ensures the stability of argon gas in the welding tool box and improves the quality of stabilizer welding.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, in particular to welding tooling. Background Art

[0002] A flame stabilizer is a device used to maintain a stable flame in combustion equipment. It is an essential feature in combustion equipment requiring stable combustion. During the casting process, cracks and pores may appear in the flame stabilizer. After these defects are removed, the different components of the flame stabilizer are welded together using argon arc welding, using argon as the shielding gas.

[0003] However, due to the particularity of the stabilizer structure, the metal on the back of the stabilizer may be oxidized during argon arc welding, and the argon gas will quickly escape during the welding process. Because it is difficult to detect the changes in 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 section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the invention of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the invention.

[0005] An optical detection system for the gas composition inside the stabilizer welding tooling, a welding tooling box for preparing the welding stabilizer, and a gas adding system for adding argon gas, the gas adding port of the gas adding system is connected to the inner cavity of the welding tooling box,

[0006] The welding tool box is provided with a detachable upper plate, and the upper plate is provided with an operation window for welding operation;

[0007] Glass windows are respectively provided on two opposite side walls of the welding tool box. The glass windows on the two opposite side walls are arranged opposite to each other, and the glass windows are arranged near the bottom side of the welding tool box.

[0008] The gas component detection system includes a beam splitter and a moving reflector, wherein the light path between the beam splitter and the moving reflector passes through oppositely arranged glass windows;

[0009] A metal mesh tube is provided between the glass windows opposite to the welding tool box, and the surface of the metal mesh tube is provided with a black frosted surface;

[0010] The light path in the welding tool box between the beam splitter and the moving reflector passes through the hollow portion of the metal mesh cylinder;

[0011] The gas component detection system also includes an interference path stroke difference adjustment system;

[0012] The interference path stroke difference adjustment system includes a glass container containing sulfur hexafluoride, the two 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 reflector;

[0013] The interference path stroke difference adjustment system also 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.

[0014] The gas component detection system is an interferometer detection system that utilizes the light path differences of the interferometer to detect the effects of different components in the gas sample on the refractive index, absorption or scattering of light by observing the changes in interference fringes.

[0015] Gas component detection and adjustment process:

[0016] S1: Fill the welding tool box with argon gas of standard concentration and use the argon gas of standard concentration to calibrate the gas component detection system;

[0017] First, mechanically adjust the moving emitting mirror to adjust the optical path difference between the beam splitter and the moving reflecting mirror to obtain a rough interference image;

[0018] S2: The sulfur hexafluoride pressure in the glass container is adjusted by an air pump. The physical property that the speed of the light beam in air is greater than that in sulfur hexafluoride is utilized to precisely adjust the optical path difference to adjust the rough interference image and obtain the standard interference image.

[0019] S3: The welding tool box is loaded into the stabilizer component for welding. The gas composition detection system detects the gas in the welding tool box through the glass window to obtain the actual interference image. Argon will continue to be consumed and other gases will be produced during the welding process. The actual interference image changes due to the change of gas composition in the welding tool box. The gas addition system adds argon to increase the argon concentration, adjusts the actual interference image to an approximate standard interference image, and completes the adjustment of the argon concentration in the welding tool box.

[0020] The refractive index of air is about 1.0003, and the speed of light in air is generally 3×10 8 m / s.

[0021] The refractive index of sulfur hexafluoride in the gaseous state at 25°C is approximately 1.00087, and the speed of light is approximately 2.9987×10 8 m / s. Actual values ​​may vary slightly depending on pressure, purity, and specific temperature. In a fixed container, higher sulfur hexafluoride concentrations increase the refractive index and slow the speed of light.

[0022] When the concentration of sulfur hexafluoride gas in a fixed container at 25°C is increased to 10 times, the refractive index of light is about 1.0087 and the speed of light is 2.973×10 8m / s. The speed of light is 0.0257×10 8 m / s. If the distance between the two ends of the glass container is 10 cm, this is equivalent to a 0.39 mm displacement of the moving mirror. This allows for large gas adjustments and small adjustments to the optical path difference between the beam splitter and the moving mirror. This enables high-precision optical path difference adjustment, resulting in higher-precision standard interference images.

[0023] This design reduces argon gas leakage when welding the stabilizer in the welding tool box, reduces possible oxidation of the metal on the back of the stabilizer, and improves welding quality. The operating window facilitates welding operations and the exhaust of fumes and exhaust gases generated during welding.

[0024] During welding, argon is continuously added through the gas addition system to maintain a stable atmosphere around the stabilizer in the welding tool box. Exhaust gas and smoke are exhausted through the operating window. When the argon concentration in the welding tool box changes, the gas composition detection system compares the actual interference pattern with the standard interference pattern to more accurately measure the changes in the gas composition in the welding tool box. The gas addition system controls the argon concentration more accurately, and the gas composition of the argon in the welding tool box is more stable, improving the quality of stabilizer welding. It also eliminates the need to refill the welding tool box with large amounts of argon to maintain the argon environment, reducing argon waste.

[0025] Argon arc welding generates high-intensity light, which can interfere with the interferometer's beam, causing blurred or distorted interference fringes. Furthermore, the fumes generated during welding can affect the interference beam between the beam splitter and the moving reflector. A metal mesh tube covers the optical path between the beam splitter and the moving reflector in the welding tool box. This prevents fumes from obstructing the light beam between the beam splitter and the moving reflector during welding, ensuring the stable operation of the gas composition detection system. The black, matte surface of the metal mesh tube blocks the strong light during argon arc welding, reducing its impact on the gas composition detection system's measurements and improving its accuracy.

[0026] Preferably, at least two gas addition ports are provided, and the at least two gas addition ports extend into the inner cavity of the welding tool box from different sides thereof, respectively, to ensure uniformity of argon filling.

[0027] Preferably, a light shield is provided above the metal mesh tube. The light shield is made of stainless steel and has a black frosted surface. The metal mesh tube is provided with at least two layers, with the holes of adjacent layers staggered. The light shield and the at least two layers of metal mesh can block the strong light generated during argon arc welding. The light shield can also prevent welding slag and other debris from falling onto the metal mesh tube, thereby ensuring the stability of the metal mesh tube structure.

[0028] Preferably, an air inlet channel and an air outlet channel are respectively provided at both ends of the metal mesh tube, and the air inlet channel and the air outlet channel pass through the two layers of metal mesh tube to connect the inside and outside of the metal mesh tube; an air inlet fan is provided in the air inlet channel, the air inlet and air outlet of the air inlet fan are facing the inside of the metal mesh tube, and the air inlet and air suction port of the air inlet fan are facing the outside of the metal mesh tube; an air outlet fan is provided in the air outlet channel, the air outlet and air outlet of the air outlet fan are facing the outside of the metal mesh tube, and the air outlet and air suction port of the air outlet fan are facing the inside of the metal mesh tube. The air inlet fan and the air outlet fan drive the flow of gas in the metal mesh tube barrel, ensuring uniform diffusion of gas in the welding tool box, especially gas in the optical path accessories between the beam splitter and the moving reflector. The gas component detection system measures the argon concentration or gas composition with higher accuracy, and the actual interference image reflects the argon concentration or gas composition more accurately.

[0029] Preferably, the air inlet channel is provided with a light shield at the outer opening of the metal mesh tube, and at least a portion of the light shield forms a channel for gas circulation with the side wall of the air inlet channel; a filter is provided in the channel; another light shield is provided on the outer opening of the metal mesh tube for the air outlet channel, and at least a portion of the other light shield forms another channel for gas circulation with the side wall of the air outlet channel; another filter is provided in the other channel; the surfaces of the light shield and the other light shield are both set to be black frosted surfaces. By providing the light shield and the other light shield, 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, thereby reducing the influence of the strong light during welding operation on the measurement of the gas component detection system. The filter and the other filter filter the smoke to prevent the smoke from blocking the light beam in the metal mesh tube and affecting the operation of the gas component detection system.

[0030] Preferably, the side wall of the glass container is provided with an air release pipe, a pressure relief valve is provided in the air release pipe, and the air release pipe is connected to a gas recovery system; the glass container is also provided with an air pressure sensor, and the sensing end of the air pressure sensor is provided in the glass container; the interference path stroke difference adjustment system also 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 tube wound around the outside of 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.

[0031] The vent pipe facilitates the decompression and exhaust of sulfur hexafluoride gas in the glass container, facilitating concentration adjustment. A gas recovery device recycles sulfur hexafluoride, saving costs. A pressure sensor measures air pressure and calculates the sulfur hexafluoride gas concentration in the glass container, thereby improving the accuracy of controlling gas concentration changes within the glass container. While the pressure sensor measures air pressure to determine sulfur hexafluoride concentration, changes in air pressure within the glass container vary with temperature. As concentration increases, the temperature of the glass container increases. Based on the temperature measured by the infrared thermal sensor, the temperature of the glass container can be raised using a heating wire or lowered using a water-cooled tube. Adjusting the glass container to maintain a constant sulfur hexafluoride temperature improves the accuracy of the pressure sensor's measurements, thereby improving the accuracy of sulfur hexafluoride gas concentration adjustment and enhancing the measurement accuracy of the gas composition detection system. The glass container is heated based on the temperature measured by the infrared thermal sensor to maintain a constant sulfur hexafluoride temperature, ensuring precise concentration control within the glass container.

[0032] Furthermore, the temperature control system includes an insulation layer wrapped around the glass container, the insulation layer enclosing the heating wire and the water-cooling tube; the insulation layer avoids the ends of the glass container; and the glass at both ends of the glass container is vacuum-insulated glass. The insulation layer reduces the impact of external temperature on the temperature changes of the glass container, reduces temperature fluctuations in the glass container, and improves the accuracy of sulfur hexafluoride gas concentration adjustment.

[0033] Preferably, when welding, polluted gas is generated, and the polluted gas is detected by a gas composition detection system. When the polluted gas exceeds the standard, welding is stopped, exhaust is performed, and new argon gas is introduced after exhaust to prevent the polluted gas from affecting the welding quality of the stabilizer.

[0034] Preferably, the argon concentration is detected by a gas component detection system. When the argon concentration is detected to be too low, argon is introduced to replenish the gas, thereby ensuring that the argon effectively covers the stabilizer and prevents oxidation on the back of the stabilizer from affecting the welding quality.

[0035] Preferably, a light path reflection system is further provided, comprising two sets of opposing reflective mirrors; one reflective mirror set comprises at least two reflective mirrors arranged at a 90-degree angle. After the light beam in the light path strikes a reflector in one reflective mirror set, it is reflected by the other reflective mirror set at a 90-degree angle, forming a parallel reflected beam. The light then strikes the other reflective mirror set, forming another parallel reflected beam. This increases the light speed within the glass container by more than three times, allowing the glass container to be shorter.

[0036] Preferably, the glass container is a flat glass container; at least two reflective mirrors are provided on one side of the glass container; and the at least two reflective mirrors are arranged along the extension direction of the flat structure of the glass container. This increases the optical path while reducing the volume of the glass container and the amount of gas used.

[0037] Preferably, the welding tool box further includes another glass window on each of two opposing side walls, with the two opposing glass windows positioned opposite each other. The welding tool box also includes another gas composition detection system, comprising another dynamic reflector and another beam splitter. The optical path between the dynamic reflector and the beam splitter is parallel to the optical path between the beam splitter and the dynamic reflector, and the distance between the two systems is greater than 100 mm. The two gas composition detection systems share a microprocessor system, thereby forming two standard interference images. These two standard interference images can be compared and calibrated with each other to further improve accuracy and avoid uneven gas diffusion in the welding tool box that affects measurement results.

[0038] Preferably, at least one gas collection hood is disposed above the shield, with its large end facing the operating window. The hood is provided with an air intake pipe, one end of which is connected to a vacuum pump, and the other end of which is connected to the small end of the gas collection hood. The hood also includes an air storage bag, with the outlet of the vacuum pump connected to the air storage bag. This allows the argon gas, fume, and polluted gases generated by welding to be recovered from the operating window, thereby reducing environmental pollution and saving costs.

[0039] Preferably, the welding tool box is provided with an overhanging cap and another overhanging cap on both sides, the overhanging cap covering the reflector and the other movable reflector, and the overhanging cap covering the beam splitter and the other beam splitter. The overhanging cap and the other overhanging cap protect the gas component detection system and the other gas component detection system from contaminants during welding operations.

[0040] In summary, the present invention has the following beneficial effects:

[0041] By comparing the actual interference image detected by the gas composition detection system with the standard interference image, the actual argon concentration and the difference between the gas composition and the standard argon concentration are determined after the actual interference image is approximated to the standard interference image, thereby accurately controlling the argon gas to ensure the stability of the argon gas environment during stabilizer welding, improving the quality of stabilizer welding, and eliminating the need to fill the welding tool box with a large amount of argon gas to maintain the argon gas environment and reduce argon gas waste.

[0042] The metal mesh tube, with its matte black surface, blocks the strong light during argon arc welding, reducing its impact on the gas composition detection system and improving its accuracy. The metal mesh tube also blocks fumes, preventing them from obstructing the light beam between the beam splitter and the moving reflector during welding, ensuring stable operation of the gas composition detection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive work. Among them:

[0044] Figure 1 Schematic diagram of the internal structure of the welding tool box of the optical detection system for gas composition inside the stabilizer welding tool of the present invention;

[0045] Figure 2 This is a schematic diagram of the appearance of a welding tool box of the optical detection system for gas composition inside the stabilizer welding tool of the present invention;

[0046] Figure 3 This is a structural diagram of the upper plate of the welding tool box of the optical detection system for gas composition inside the stabilizer welding tool of the present invention;

[0047] Figure 4 This is a schematic diagram of the internal structure principle of a glass container of the optical detection system for gas components inside the stabilizer welding tooling of the present invention.

[0048] In the figure, 1. Welding tool box; 11. Upper plate; 12. Glass window; 13. Metal mesh tube; 14. Shading plate; 2. Beam splitter; 3. Moving reflector; 4. Air pump; 5. Sulfur hexafluoride gas source; 6. Glass container; 61. One reflector group; 62. Another reflector group; 7. Gas addition port. DETAILED DESCRIPTION

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0051] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, these schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0052] Furthermore, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in less than one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it necessarily refer to a single embodiment or a selective embodiment that is mutually exclusive of other embodiments.

[0053] Example 1, reference Figures 1-4 , an optical detection system for the internal gas components of the stabilizer welding tool, a welding tool box 1 for preparing the welding stabilizer, and a gas adding system for adding argon, and the gas adding port 7 of the gas adding system is connected to the inner cavity of the welding tool box 1.

[0054] The welding tool box 1 is provided with a detachable upper plate 11, and the upper plate 11 is provided with an operation window for performing welding operations;

[0055] Glass windows 12 are respectively provided on two opposite side walls of the welding tool box 1. The glass windows 12 on the two opposite side walls are arranged opposite to each other, and the glass windows 12 are arranged near the bottom side of the welding tool box 1;

[0056] The gas component detection system includes a beam splitter 2 and a moving reflector 3. The light path between the beam splitter 2 and the moving reflector 3 passes through the glass windows 12 that are oppositely arranged.

[0057] A metal mesh tube 13 is provided between the glass windows 12 opposite to each other in the welding tool box 1, and the surface of the metal mesh tube 13 is provided with a black frosted surface;

[0058] The light path in the welding tool box 1 between the beam splitter 2 and the movable reflector 3 passes through the hollow portion of the metal mesh tube 13;

[0059] The gas component detection system also includes an interference path stroke difference adjustment system;

[0060] The interference path travel difference adjustment system includes a glass container 6 containing sulfur hexafluoride, wherein 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 reflector 3;

[0061] The interference path stroke difference adjustment system further includes an air pump 4 for adjusting the air pressure in the glass container 6 , and the air pump 4 is connected to a sulfur hexafluoride gas source 5 .

[0062] The gas component detection system is an interferometer detection system that utilizes the light path differences of the interferometer to detect the effects of different components in the gas sample on the refractive index, absorption or scattering of light by observing the changes in interference fringes.

[0063] Gas component detection and adjustment process:

[0064] S1: Fill the welding tool box 1 with argon gas of standard concentration and calibrate the gas component detection system using the argon gas of standard concentration;

[0065] First, mechanically adjust the moving emitting mirror to adjust the optical path difference between the beam splitter 2 and the moving reflecting mirror 3 to obtain a rough interference image;

[0066] S2: The sulfur hexafluoride pressure in the glass container 6 is adjusted by the air pump 4. The optical path difference is precisely adjusted to adjust the rough interference image by utilizing the physical property that the light beam has a greater speed in air than in sulfur hexafluoride, thereby obtaining a standard interference image.

[0067] S3: The welding tool box 1 is loaded with the stabilizer component for welding. The gas composition detection system detects the gas in the welding tool box 1 through the glass window 12 to obtain the actual interference image. Argon will continue to be consumed and other gases will be produced during the welding process. The actual interference image changes due to the change in the gas composition in the welding tool box 1. The gas addition system adds argon to increase the argon concentration, adjusts the actual interference image to an approximate standard interference image, and completes the adjustment of the argon concentration in the welding tool box 1.

[0068] The refractive index of air is about 1.0003, and the speed of light in air is generally 3×10 8 m / s.

[0069] The refractive index of sulfur hexafluoride in the gaseous state at 25°C is approximately 1.00087, and the speed of light is approximately 2.9987×10 8 m / s. Actual values ​​may vary slightly depending on pressure, purity, and specific temperature. In a fixed container, higher sulfur hexafluoride concentrations increase the refractive index and slow the speed of light.

[0070] When the concentration of sulfur hexafluoride gas in a fixed container at 25°C is increased to 10 times, the refractive index of light is about 1.0087 and the speed of light is 2.973×10 8 m / s. The speed of light is 0.0257×10 8 m / s. If the distance between the two ends of the glass container 6 is 10 cm, this is equivalent to a displacement of the moving mirror of 0.39 mm. This allows for relatively large gas adjustments and relatively small adjustments to the optical path difference between the beam splitter 2 and the moving mirror. This allows for highly precise optical path difference adjustment, resulting in a more accurate standard interference image.

[0071] The above design reduces argon gas leakage when welding the stabilizer in the welding tool box 1, reduces possible oxidation of the metal on the back of the stabilizer, and improves welding quality. The operation window facilitates welding operations and the discharge of smoke and exhaust gases generated during welding.

[0072] During welding, argon is continuously added through the gas addition system to maintain a stable atmosphere around the stabilizer in welding tool box 1. Exhaust gas and smoke are exhausted through the operating window. When the argon concentration in welding tool box 1 changes, the gas composition detection system more accurately measures the changes in the gas composition in welding tool box 1 by comparing the actual interference pattern with the standard interference pattern. The gas addition system controls the argon concentration more precisely, and the gas composition of the argon in welding tool box 1 is more stable, improving the quality of stabilizer welding. It eliminates the need to refill the welding tool box 1 with large amounts of argon to maintain the argon environment, reducing argon waste.

[0073] Argon arc welding generates high-intensity light during welding, which can interfere with the interferometer's light beam, causing the interference fringes to be blurred or distorted. In addition, the smoke generated during welding can also affect the interference light beam between the beam splitter 2 and the moving reflector 3. The metal mesh tube 13 covers the light path between the beam splitter 2 and the moving reflector 3 in the welding tool box 1. The metal mesh tube 13 can block the smoke outside, preventing the smoke from blocking the light beam between the beam splitter 2 and the moving reflector 3 during welding operations, thereby ensuring the stable operation of the gas component detection system. The black frosted surface of the metal mesh tube 13 can block the strong light during argon arc welding, reduce the impact of strong light on the measurement of the gas component detection system during welding operations, and improve the measurement accuracy of the gas component detection system.

[0074] There are at least two gas adding ports 7, which extend into the inner cavity of the welding tool box 1 from different sides of the welding tool box 1, respectively, to ensure uniformity of argon filling.

[0075] During welding, polluted gas is generated. The gas component detection system detects the polluted gas. When the polluted gas exceeds the standard, welding is stopped and exhaust is performed. After exhaust, new argon gas is introduced to prevent the polluted gas from affecting the welding quality of the stabilizer.

[0076] The gas component detection system detects the argon concentration. When the argon concentration is too low, argon is added to ensure that the argon effectively covers the stabilizer and prevents oxidation on the back of the stabilizer that affects the welding quality.

[0077] A light path reflection system is also provided, comprising two sets of opposing reflective mirrors. One reflective mirror set 61 includes at least two reflective mirrors arranged at a 90-degree angle. After the light beam in the light path strikes the reflector of one reflective mirror set 61, it is reflected by the other reflective mirror arranged at a 90-degree angle, forming a parallel reflected beam. This beam then strikes the other reflective mirror set 6261, forming another parallel reflected beam. This increases the light speed within the glass container 6 by more than three times, allowing the glass container 6 to be shorter.

[0078] The glass container 6 is a flat glass container 6 ; at least two reflective mirrors are provided on one side of the glass container 6 ; the at least two reflective mirrors are arranged along the extension direction of the flat structure of the glass container 6 . This increases the optical path while reducing the volume of the glass container 6 and the amount of gas used.

[0079] During use, the welding tool box 1 is filled with argon gas of a standard concentration, and the gas component detection system is calibrated using the argon gas of the standard concentration to obtain a standard interference image. The stabilizer component is installed in the welding tool box 1, and the gas component detection system detects the gas in the welding tool box 1 through the glass window 12 to obtain the actual interference image. The metal mesh tube 13 blocks the smoke and can block the strong light during the argon arc welding process through the black frosted surface, thereby improving the measurement accuracy of the gas component detection system. The argon concentration is detected by the gas component detection system. When the argon concentration is detected to be too low, argon gas is introduced to replenish it. Polluted gas is generated during welding, and the polluted gas is detected by the gas component detection system. When it is detected that the polluted gas exceeds the standard, welding is stopped and exhaust is carried out. After exhausting, new argon gas is introduced. The stability of the argon concentration in the welding tool box 1 is ensured, thereby improving the stability of the stabilizer welding.

[0080] Example 2, reference Figure 2 and Figure 3 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0081] A light shield 14 is installed above the metal mesh tube 13. The light shield 14 is made of stainless steel and has a black frosted surface. The metal mesh tube 13 is constructed of at least two layers, with the holes in adjacent layers staggered. The light shield 14 and the at least two layers of metal mesh tube 13 block the strong light generated during argon arc welding. The light shield 14 also prevents welding slag and other debris from falling onto the metal mesh tube 13, ensuring the structural stability of the metal mesh tube 13.

[0082] An air inlet channel and an air outlet channel are respectively provided at both ends of the metal mesh tube 13. The air inlet channel and the air outlet channel pass through the two layers of metal mesh tube 13 to connect the inside and outside of the metal mesh tube 13. An air inlet fan is provided in the air inlet channel, with the air inlet and air outlet of the air inlet fan facing the inside of the metal mesh tube 13, and the air inlet and air suction port of the air inlet fan facing the outside of the metal mesh tube 13. An air outlet fan is provided in the air outlet channel, with the air outlet and air outlet of the air outlet fan facing the outside of the metal mesh tube 13, and the air outlet and air suction port of the air outlet fan facing the inside of the metal mesh tube 13. The air inlet fan and the air outlet fan drive the flow of gas in the metal mesh tube 13, ensuring uniform diffusion of gas in the welding tool box 1, especially gas in the optical path accessories between the beam splitter 2 and the dynamic reflector 3. This allows the gas component detection system to measure the argon concentration or gas composition with higher accuracy, and the actual interference image reflects the argon concentration or gas composition with higher accuracy.

[0083] The air inlet channel is provided with a light shield at the outer opening of the metal mesh tube 13, and at least a portion of the light shield forms a gas flow channel with the side wall of the air inlet channel; a filter is provided in the channel; another light shield is provided at the outer opening of the metal mesh tube 13, and at least a portion of the light shield forms another gas flow channel with the side wall of the air outlet channel; another filter is provided in the other channel; the surfaces of the light shield and the other light shield are both configured to have a black frosted surface. By providing the light shield and the other light shield, 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, thereby reducing the impact of the strong light during welding on the measurement of the gas component detection system. The filter and the other filter filter the smoke, preventing the smoke from blocking the light beam in the metal mesh tube 13 and affecting the operation of the gas component detection system.

[0084] The side wall of the glass container 6 is provided with an air release pipe, a pressure relief valve is provided in the air release pipe, and the air release pipe is connected to a gas recovery system; the glass container 6 is also provided with an air pressure sensor, and the sensing end of the air pressure sensor is provided in the glass container 6; the interference path stroke 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 tube 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.

[0085] The vent pipe facilitates the decompression and exhaust of sulfur hexafluoride gas in glass container 6, facilitating concentration adjustment in glass container 6. A gas recovery device can recycle sulfur hexafluoride, saving costs. A pressure sensor measures the air pressure and calculates the sulfur hexafluoride gas concentration in glass container 6, thereby improving the accuracy of controlling changes in gas concentration in glass container 6. The pressure sensor measures the air pressure to obtain the sulfur hexafluoride concentration, but changes in the air pressure of glass container 6 vary with temperature. As the concentration in glass container 6 increases, the temperature of glass container 6 increases. Based on the temperature measured by the infrared thermal sensor, the temperature of glass container 6 can be raised using a heating wire or lowered using a water-cooled tube. Adjusting glass container 6 maintains a constant temperature of sulfur hexafluoride in glass container 6, improving the accuracy of the pressure sensor's measurements and, consequently, the accuracy of sulfur hexafluoride gas concentration adjustment, resulting in higher measurement accuracy for the gas composition detection system. Glass container 6 is heated based on the temperature measured by the infrared thermal sensor to maintain a constant temperature of sulfur hexafluoride in glass container 6, ensuring precise control of the concentration in glass container 6.

[0086] Furthermore, the temperature control system includes an insulating layer surrounding the glass container 6, which encloses the heating wire and the water-cooling tube. The insulating layer avoids the ends of the glass container 6, and the glass at both ends of the glass container 6 is vacuum-insulated glass. The insulating layer reduces the impact of external temperature on the temperature of the glass container 6, reduces temperature fluctuations in the glass container 6, and improves the accuracy of sulfur hexafluoride gas concentration adjustment.

[0087] Another glass window 12 is also provided on each of the two opposing side walls of the welding tool box 1, and the two opposing glass windows 12 are arranged opposite each other. The welding tool box 1 also includes another gas composition detection system, which includes another dynamic reflector and another beam splitter 2. The optical path between the other dynamic reflector and the other beam splitter 2 is parallel to the optical path between the beam splitter 2 and the dynamic reflector 3, and the interval is greater than 100 mm. The two gas composition 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 accuracy. The two actual images prevent uneven gas diffusion from affecting measurement accuracy, thus avoiding uneven gas diffusion in the welding tool box 1 and affecting measurement results.

[0088] At least one gas collection hood is located above the shield, with its large end facing the operating window. The hood is equipped with an air intake pipe, one end of which is connected to a vacuum pump, and the other end of which is connected to the small end of the hood. The hood also includes an air storage bag, with the outlet of the vacuum pump connected to the air storage bag. This recycles argon gas, smoke, and contaminated gases emitted from the operating window, reducing environmental pollution and saving costs.

[0089] The welding tool box 1 is provided with an overhanging cap and another overhanging cap on both sides. The overhanging cap covers the reflector and another movable reflector, and the overhanging cap covers the beam splitter 2 and another beam splitter 2. The overhanging cap and another overhanging cap protect the gas component detection system and another gas component detection system from the influence of pollutants during welding operation.

[0090] When in use, the shading plate 14 and the at least two layers of metal mesh tube 13 block the strong light generated during the argon arc welding operation, preventing the gas component detection system from being affected by the strong light during the argon arc welding operation, resulting in inaccurate imaging. The air intake fan and the air outlet fan drive the flow of gas in the metal mesh tube 13 barrel to ensure that the gas in the welding tool box 1, especially the gas in the optical path accessories between the beam splitter 2 and the moving reflector 3, is evenly diffused. The filter and another filter filter the smoke. The argon gas, smoke and polluted gas generated by welding that emerge from the operating window are recovered to reduce environmental pollution, and the recycling of argon gas saves costs.

[0091] A pressure sensor measures the pressure in glass container 6 to determine the sulfur hexafluoride concentration. This concentration is then adjusted via a vent pipe and air pump 4. The temperature control system reduces temperature fluctuations in glass container 6 and improves the accuracy of adjusting the sulfur hexafluoride concentration using pressure sensor measurements. Another gas component detection system generates two standard interference patterns, which can be compared and calibrated to further improve accuracy.

[0092] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An optical detection system for gas composition inside a stabilizer welding tool, a welding tool box (1) for preparing a welding stabilizer, and a gas adding system for adding argon gas, wherein a gas adding port (7) of the gas adding system is connected to the inner cavity of the welding tool box (1), characterized in that: The welding tool box (1) is provided with a detachable upper plate (11), and the upper plate (11) is provided with an operation window for performing welding operations; Glass windows (12) are respectively provided on two opposite side walls of the welding tool box (1), and 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 tool box (1); Also included is a gas component detection system, which includes a beam splitter (2) and a movable reflector (3), wherein the light path between the beam splitter (2) and the movable reflector (3) passes through oppositely arranged glass windows (12); A metal mesh tube (13) is provided between the glass windows (12) opposite to each other in the welding tool box (1), and the surface of the metal mesh tube (13) is provided as a black frosted surface; The light path in the welding tool box (1) between the beam splitter (2) and the movable reflector (3) passes through the hollow portion of the metal mesh cylinder (13); The gas component detection system also includes an interference path stroke difference adjustment system; The interference path stroke difference adjustment system comprises a glass container (6) containing sulfur hexafluoride, wherein 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 reflector (3); The interference path stroke difference adjustment system further includes an air pump (4) for adjusting the air pressure in the glass container (6), and the air pump (4) is connected to a sulfur hexafluoride gas source (5); A light shielding plate (14) is provided above the metal mesh cylinder (13); the light shielding plate (14) is made of stainless steel; and the surface of the light shielding plate (14) is provided with a black frosted surface; The metal mesh cylinder (13) is provided with at least two layers, and the holes of the metal mesh cylinders (13) in adjacent layers are staggered. The metal mesh tube (13) covers the light path between the beam splitter (2) and the moving reflector (3) in the welding tool box (1). The metal mesh tube (13) blocks the smoke outside to prevent the smoke from blocking the light beam between the beam splitter (2) and the moving reflector (3) during welding operation, thereby ensuring the stable operation of the gas component detection system; The shading plate and at least two layers of metal mesh tubes block the strong light generated during the argon arc welding operation.

2. The optical detection system for gas composition inside a stabilizer welding tool according to claim 1, characterized in that: An air inlet channel and an air outlet channel are respectively provided at both ends of the metal mesh tube (13), and the air inlet channel and the air outlet channel pass through two layers of the metal mesh tube (13) to connect the inside and outside of the metal mesh tube (13); An air intake fan is provided in the air intake channel, an air intake and air outlet of the air intake fan faces the inner side of the metal mesh cylinder (13), and an air intake and air suction port of the air intake fan faces the outer side of the metal mesh cylinder (13); An air outlet fan is provided in the air outlet channel, an air outlet of the air outlet fan faces the outside of the metal mesh cylinder (13), and an air outlet and air intake of the air outlet fan faces the inside of the metal mesh cylinder (13).

3. The optical detection system for gas composition inside a stabilizer welding tool according to claim 2, characterized in that: The air inlet channel is provided with a light shield at the outer opening of the metal mesh tube (13), and at least a portion of the light shield forms a gas flow channel with the side wall of the air inlet channel; A filter is provided in the channel; The gas outlet channel is provided with another light shield on the outer opening of the metal mesh tube (13), and at least a portion of the other light shield forms another channel for gas circulation with the side wall of the gas outlet channel; Another filter is provided in the another channel; The surfaces of the light shield and the other light shield are both set to be black frosted surfaces.

4. The optical detection system for gas composition inside a stabilizer welding tool according to claim 1, characterized in that: Polluted gas is generated during welding. The polluted gas is detected by the gas component detection system. When the polluted gas exceeds the standard, welding is stopped and exhaust is carried out. After exhausting, new argon gas is introduced.

5. The optical detection system for gas composition inside a stabilizer welding tool according to claim 1, characterized in that: The argon concentration is detected by the gas component detection system. When the argon concentration is detected to be too low, argon is introduced for replenishment.

6. The optical detection system for gas composition inside a stabilizer welding tool according to claim 1, characterized in that: There is also a light path reflection system. The optical path reflection system includes two sets of opposing reflecting mirrors; A reflector assembly (61) includes at least two reflectors whose reflective surfaces are arranged at a 90-degree angle; After the light beam in the optical path is irradiated by a reflector of a reflector group (61), it is reflected by another reflector arranged at a 90-degree angle to form a parallel reflected light beam, and then irradiated by another reflector group (62) to form a parallel reflected light beam again; The speed of light is then increased to more than three times in the glass container (6).

7. The optical detection system for gas composition inside a stabilizer welding tool according to claim 1, characterized in that: The glass container (6) is a flat glass container (6); At least two reflective mirror groups are provided on one side of the glass container (6); At least two groups of reflective mirrors are arranged along the extension direction of the flat structure of the glass container (6).

8. The optical detection system for gas composition inside a stabilizer welding tool according to claim 1, characterized in that: The side wall of the glass container (6) is provided with a gas relief pipe, a pressure relief valve is provided in the gas relief pipe, and the gas relief pipe is connected to a gas recovery system; The glass container (6) is further provided with an air pressure sensor, wherein the sensing end of the air pressure sensor is provided in the glass container (6); The interference path stroke 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 a heating wire and a water cooling tube wound around the glass container (6); The temperature control system also includes an infrared heat sensor, the sensing end of which points to the inner cavity of the glass container (6).

9. The optical detection system for gas composition inside a stabilizer welding tool according to claim 1, characterized in that: Another glass window (12) is further provided on each of the two opposite side walls of the welding tool box (1), and the two opposite other glass windows (12) are arranged opposite to each other; Also included is another gas component detection system, the other gas component detection system including another moving reflector and another beam splitter (2); The optical path between the other moving reflector and the other beam splitter (2) is parallel to the optical path between the beam splitter (2) and the moving reflector (3), and the interval is greater than 100 mm.

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