Laser welding nitrogen machine
By setting up a buffer tank, nitrogen concentration probe and analysis instrument in the laser welding nitrogen machine, the problem of low nitrogen concentration is solved, and the preparation of high-purity nitrogen is realized to ensure the quality of laser welding.
Patent Information
- Application Number
- CN202422236617.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-12
AI Technical Summary
In the prior art, the nitrogen machine has poor adsorption effect when preparing nitrogen, resulting in low nitrogen concentration and impurity, affecting the quality of laser welding.
A laser welding nitrogen machine was designed, including a buffer tank, a nitrogen concentration probe and a nitrogen analysis instrument. The nitrogen was prepared by adsorption and separation, and concentration monitoring was performed when the fourth solenoid valve was closed, and the gas pipeline was closed in time to prevent the low-concentration nitrogen from entering the pressure-regulating nitrogen storage tank.
The preparation of high-quality nitrogen is achieved, ensuring that the nitrogen concentration reaches 99.999%, preventing pollution, and ensuring high-quality operation of laser welding equipment.
Smart Images
Figure CN223112699U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nitrogen preparation, in particular to a laser welding nitrogen machine. Background Art
[0002] When laser welding the workpiece, considering that nitrogen is inert, it can prevent oxidation and corrosion in the welding area. In order to improve the welding quality, the laser welding equipment will be used in conjunction with a nitrogen machine, so that nitrogen can be used to protect the welding area during the welding process, which can effectively prevent oxygen molecules and other active molecules from entering, thereby avoiding oxidation and corrosion. In addition, by adjusting the size and speed of the nitrogen flow, the nitrogen pressure and flow during the welding process can be controlled to be stable, ensuring that the surface color of the weld path of the weld is white, thereby achieving high-quality metal welding;
[0003] In the prior art, nitrogen is prepared using a nitrogen machine so that it can be used in conjunction with laser welding equipment for efficient welding processing operations. Generally, nitrogen is prepared in an environmentally friendly manner through air adsorption separation. However, considering that after a period of use, the air adsorption separation equipment will have a poor adsorption effect. At this time, the gas directly taken out of the adsorption equipment often has problems such as low nitrogen concentration and impure nitrogen, and the output nitrogen pressure and flow are unstable, which affects the work quality of laser welding processing using nitrogen in subsequent operations. Therefore, a laser welding nitrogen machine is proposed to address the above problems. Utility Model Content
[0004] The utility model aims to provide a laser welding nitrogen machine to solve the problem that when nitrogen is prepared by a nitrogen machine in the prior art, the prepared nitrogen is impure due to poor adsorption effect.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A laser welding nitrogen machine, comprising a metal machine compartment, on both sides of the rear inner side of the metal machine compartment, a first tower nitrogen molecular sieve tank and a second tower nitrogen molecular sieve tank are respectively provided. At the rear position of the first tower nitrogen molecular sieve tank, a multi-way air inlet is adjacent to each other before and after. On both sides of the front inner side of the metal machine compartment, a buffer tank and a pressure-stabilizing nitrogen storage tank are respectively provided. The air outlet end of the buffer tank is connected to a second multi-way gas pipe. At the end of the L-shaped branch pipe of the second multi-way gas pipe, a nitrogen concentration probe is connected. Above the nitrogen concentration probe, a nitrogen analysis instrument is provided. At the end of the vertical branch pipe of the second multi-way gas pipe, a fourth solenoid valve is connected. Between the fourth solenoid valve and the pressure-stabilizing nitrogen storage tank, it is connected through a bent pipe member. On the connecting pipeline between the fourth solenoid valve and the pressure-stabilizing nitrogen storage tank, a second regulating valve and a one-way valve are successively arranged from top to bottom. The air inlet end of the buffer tank is connected to a confluence elbow. On the connecting pipeline between the confluence elbow and the buffer tank, a first regulating valve is connected.
[0007] Preferably, the air outlet end of the multi-way air inlet is hermetically connected to a double-control solenoid valve. At the bottom position of the double-control solenoid valve, a first multi-way gas pipe is connected. There are 2 first multi-way gas pipes in total. The end of the short pipe of the first multi-way gas pipe with a "human" shape is hermetically connected to a first solenoid valve. The end of the long pipe of the first multi-way gas pipe with a "human" shape is connected to the first tower nitrogen molecular sieve tank.
[0008] Preferably, the other first multi-way gas pipe at the bottom position of the double-control solenoid valve is connected to the air inlet end of the second tower nitrogen molecular sieve tank. The air outlet end of the first tower nitrogen molecular sieve tank is connected to a second solenoid valve. The air outlet end of the second tower nitrogen molecular sieve tank is connected to a third solenoid valve. The third solenoid valve and the second solenoid valve are connected to the air inlet end of the confluence elbow through a "U"-shaped gas pipe member. The third solenoid valve and the second solenoid valve are arranged opposite to each other before and after.
[0009] Preferably, on the upper position of the front end face of the metal machine compartment, an air inlet and outlet pressure gauge, a nitrogen tank pressure gauge and a group of tower tank pressure gauges are successively arranged from left to right. The group of tower tank pressure gauges are respectively connected to the air outlet pipelines of the first tower nitrogen molecular sieve tank and the second tower nitrogen molecular sieve tank. The air inlet and outlet pressure gauge is connected to the air inlet pipeline of the multi-way air inlet.
[0010] Preferably, the metal machine compartment is snap-connected to the nitrogen analysis instrument through a square opening structure provided on the front end face. The nitrogen tank pressure gauge is connected to the air outlet pipeline of the second multi-way gas pipe. The air outlet end of the pressure-stabilizing nitrogen storage tank is connected to an air outlet elbow, and the air outlet elbow extends to the rear left inner position of the metal machine compartment.
[0011] Compared with the prior art, the beneficial effects of the present utility model are:
[0012] In the present utility model, through the provided buffer tank, second multi-pass gas pipe, nitrogen concentration probe and nitrogen analysis instrument, it is convenient for the laser welding nitrogen generator to prepare nitrogen by adsorption separation, so that during the process of subsequently assisting the laser welding equipment to perform high-quality welding operations, when the fourth solenoid valve is in the closed state, the nitrogen concentration detection structure composed of the buffer tank, second multi-pass gas pipe, nitrogen concentration probe and nitrogen analysis instrument is used to timely monitor the concentration of the prepared nitrogen, so that the subsequent system can urgently close the gas pipeline to avoid low-concentration nitrogen directly entering the internal of the pressure-stabilized nitrogen storage tank and causing pollution to its internal, and the timely concentration detection operation is also conducive to the entire nitrogen preparation system to timely close the system pipeline to prevent impure nitrogen from affecting the high-quality welding operation of the laser welding equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0014] Figure 2 is a schematic top view of the interior of the metal machine compartment of the present utility model;
[0015] Figure 3 is a schematic rear view of the interior of the metal machine compartment of the present utility model;
[0016] Figure 4 is a schematic front view of the interior of the metal machine compartment of the present utility model.
[0017] In the figure: 1, metal machine compartment; 2, multi-pass air inlet; 3, dual-control solenoid valve; 4, first multi-pass gas pipe; 5, first solenoid valve; 6, first tower nitrogen molecular sieve tank; 7, second tower nitrogen molecular sieve tank; 8, confluence elbow; 9, buffer tank; 10, second multi-pass gas pipe; 11, nitrogen concentration probe; 12, nitrogen analysis instrument; 13, fourth solenoid valve; 14, pressure-stabilized nitrogen storage tank; 15, outlet elbow; 16, second solenoid valve; 17, third solenoid valve; 18, tower tank pressure gauge; 19, nitrogen tank pressure gauge; 20, air inlet and outlet pressure gauge; 21, first regulating valve; 22, second regulating valve; 23, check valve. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0019] Please refer to Figures 1-4 , the present utility model provides a technical solution:
[0020] A laser welding nitrogen machine includes a metal machine compartment 1. On both sides of the rear inner side of the metal machine compartment 1, a first tower nitrogen molecular sieve tank 6 and a second tower nitrogen molecular sieve tank 7 are respectively provided. A multi-way air inlet 2 is provided adjacent to the front and rear positions behind the first tower nitrogen molecular sieve tank 6. On both sides of the front inner side of the metal machine compartment 1, a buffer tank 9 and a pressure stabilizing nitrogen storage tank 14 are respectively provided. The outlet end of the buffer tank 9 is connected to a second multi-way gas pipe 10. The end of the L-shaped branch pipe of the second multi-way gas pipe 10 is connected to a nitrogen concentration probe 11. Above the nitrogen concentration probe 11, a nitrogen analysis instrument 12 is provided. The end of the vertical branch pipe of the second multi-way gas pipe 10 is connected to a fourth solenoid valve 13. The fourth solenoid valve 13 and the pressure stabilizing nitrogen storage tank 14 are connected through a bent pipe member. On the connecting pipeline between the fourth solenoid valve 13 and the pressure stabilizing nitrogen storage tank 14, a second regulating valve 22 and a one-way valve 23 are successively provided from top to bottom. The inlet end of the buffer tank 9 is connected to a confluence elbow 8. A first regulating valve 21 is connected to the connecting pipeline between the confluence elbow 8 and the buffer tank 9. The first regulating valve 21 can play a role in adjusting the inflow amount of nitrogen during the nitrogen preparation process, and plays a major role in extracting high-concentration nitrogen and the flow rate value per minute. The outlet of the buffer tank 9 is connected to the fourth solenoid valve 13, the second regulating valve 22 and the one-way valve 23. The main function of the fourth solenoid valve 13 during use is to discharge the nitrogen with unqualified concentration into the air and discharge the qualified nitrogen into the pressure stabilizing nitrogen storage tank 14. The second regulating valve 22 mainly plays a role in stabilizing the nitrogen flow rate required during welding during use. The one-way valve 23 mainly plays a role in making the nitrogen only enter and not retreat during use, ensuring the stability of the nitrogen pressure in the pressure stabilizing nitrogen storage tank 14 and the stability of the nitrogen pressure required during welding, which plays an important role.
[0021] Such as Figure 1 And Figure 3As shown in the figure, the outlet end of the multi-way air inlet 2 is hermetically connected to a double-control solenoid valve 3. The bottom of the double-control solenoid valve 3 is connected to a first multi-way gas pipe 4. There are 2 first multi-way gas pipes 4 in total. The end of the short pipe of the first multi-way gas pipe 4 with a "human" shape is hermetically connected to a first solenoid valve 5. The end of the long pipe of the first multi-way gas pipe 4 with a "human" shape is connected to the first tower nitrogen molecular sieve tank 6. Under the dual-channel control of the double-control solenoid valve 3, it is possible to realize the back-and-forth conversion of ventilation between the first tower nitrogen molecular sieve tank 6 and the second tower nitrogen molecular sieve tank 7, which is conducive to the entire nitrogen production system to produce nitrogen with a better concentration through the method of full adsorption and separation; Another first multi-way gas pipe 4 located at the bottom of the double-control solenoid valve 3 is connected to the inlet end of the second tower nitrogen molecular sieve tank 7. The outlet end of the first tower nitrogen molecular sieve tank 6 is connected to a second solenoid valve 16. The outlet end of the second tower nitrogen molecular sieve tank 7 is connected to a third solenoid valve 17. The third solenoid valve 17 and the second solenoid valve 16 are connected to the inlet end of the confluence elbow 8 through a "U"-shaped gas pipe component. The third solenoid valve 17 and the second solenoid valve 16 are arranged opposite to each other front and back. After the third solenoid valve 17 and the second solenoid valve 16 are respectively opened, the nitrogen separated from the first tower nitrogen molecular sieve tank 6 and the second tower nitrogen molecular sieve tank 7 will enter the confluence elbow 8 for confluence, so that it can be sent into the buffer tank 9 at the same time later.
[0022] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, above the front end face of the metal cabin 1, an air inlet and outlet pressure gauge 20, a nitrogen tank pressure gauge 19 and a group of tower tank pressure gauges 18 are arranged in sequence from left to right. The group of tower tank pressure gauges 18 are respectively connected to the outlet pipelines of the first tower nitrogen molecular sieve tank 6 and the second tower nitrogen molecular sieve tank 7. The air inlet and outlet pressure gauge 20 is connected to the inlet pipeline of the multi-way air inlet 2. When the entire nitrogen production system is operating, the air inlet and outlet pressure gauge 20, the nitrogen tank pressure gauge 19 and the group of tower tank pressure gauges 18 will respectively monitor the pressure when air is sent, the pressure of sending nitrogen into the buffer tank 9, and the pressure of nitrogen separated from the first tower nitrogen molecular sieve tank 6 and the second tower nitrogen molecular sieve tank 7; The metal cabin 1 is snap-connected to the nitrogen analysis instrument 12 through a square opening structure provided on the front end face. The nitrogen tank pressure gauge 19 is connected to the outlet pipeline of the second multi-way gas pipe 10. The outlet end of the constant-pressure nitrogen storage tank 14 is connected to an outlet elbow 15. The outlet elbow 15 extends to the inner left rear position of the metal cabin 1. The function of the constant-pressure nitrogen storage tank 14 in the system is to provide nitrogen for multiple laser welding machines to use simultaneously. When the external nitrogen is used and the pressure of the constant-pressure nitrogen storage tank 14 drops to the set lower limit value, the control system automatically starts the nitrogen production work.
[0023] Workflow: All the electric energy required for the startup and operation of the device in this utility model comes from an external power source. Before using the device, the outlet elbow 15 and the laser welding inlet pipe can be connected together through a flexible hose. When the laser welding nitrogen generator is needed, first, as air is gradually sent into the inlet pipeline through the inside of the multi-way air inlet 2, the entire nitrogen preparation system can first use the first tower nitrogen molecular sieve tank 6 to adsorb the oxygen in the air in the gas tank, separating nitrogen from oxygen. Then, a small amount of high-concentration nitrogen is collected in the buffer tank 9. Since nitrogen is lighter than oxygen, nitrogen is at the top of the gas tank and oxygen is at the bottom of the buffer tank 9. After the ventilation time of the first tower nitrogen molecular sieve tank 6 ends, the impure gases of both are discharged into the air by the relevant solenoid valves controlled by the circuit and recycled in the second tower nitrogen molecular sieve tank 7. The first tower nitrogen molecular sieve tank 6 and the second tower nitrogen molecular sieve tank 7 are switched to ventilate back and forth by time. Then, the buffer tank 9 continuously collects high-concentration nitrogen. After the nitrogen concentration is detected by the nitrogen concentration probe 11 and the nitrogen analyzer 12 and reaches 99.999%, the nitrogen in the buffer tank 9 will be discharged into the pressure-stabilizing nitrogen storage tank 14 through the inside of the second multi-way gas pipe 10 for storage. Since a fourth solenoid valve 13, a second regulating valve 22, and a check valve 23 are installed at the nitrogen inlet of the pressure-stabilizing nitrogen storage tank 14, the nitrogen inflow is controlled by the flow rate per minute, and nitrogen only goes in and does not go back. When the nitrogen pressure in the pressure-stabilizing nitrogen storage tank 14 reaches the upper limit pressure value set by the pressure controller, the nitrogen production work stops, and at the same time, the exhaust pipeline for measuring nitrogen concentration is also closed, so that the entire nitrogen preparation system can then send out high-concentration nitrogen through the outlet elbow 15 to cooperate with the laser welding equipment to complete high-quality welding operations; when the nitrogen pressure in the pressure-stabilizing nitrogen storage tank 14 is at the lower limit, the system starts nitrogen production and directly collects high-concentration nitrogen.
[0024] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, variations, and upgrades can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A laser welding nitrogen machine, comprising a metal machine compartment (1), characterized in that: On both sides of the rear inner side of the metal cabin (1), a first tower nitrogen molecular sieve tank (6) and a second tower nitrogen molecular sieve tank (7) are respectively provided. At the rear position of the first tower nitrogen molecular sieve tank (6), a multi-way air inlet (2) is provided adjacent to the front and rear. On both sides of the front inner side of the metal cabin (1), a buffer tank (9) and a constant pressure nitrogen storage tank (14) are respectively provided. The outlet end of the buffer tank (9) is connected to a second multi-way gas pipe (10). At the end of the L-shaped branch pipe of the second multi-way gas pipe (10), a nitrogen concentration probe (11) is connected. Above the nitrogen concentration probe (11), a nitrogen analysis instrument (12) is provided. At the end of the vertical branch pipe of the second multi-way gas pipe (10), a fourth solenoid valve (13) is connected. The fourth solenoid valve (13) and the constant pressure nitrogen storage tank (14) are connected through a bent pipe member. On the connecting pipeline between the fourth solenoid valve (13) and the constant pressure nitrogen storage tank (14), a second regulating valve (22) and a check valve (23) are successively arranged from top to bottom. The inlet end of the buffer tank (9) is connected to a converging elbow (8). A first regulating valve (21) is connected to the connecting pipeline between the converging elbow (8) and the buffer tank (9).
2. The nitrogen machine for laser welding according to claim 1, characterized in that: The outlet end of the multi-way air inlet (2) is hermetically connected to a double-control solenoid valve (3). The bottom position of the double-control solenoid valve (3) is connected to a first multi-way gas pipe (4). There are 2 first multi-way gas pipes (4) in total. The end of the short pipe of the first multi-way gas pipe (4) with a "person" shape is hermetically connected to a first solenoid valve (5). The end of the long pipe of the first multi-way gas pipe (4) with a "person" shape is connected to the first tower nitrogen molecular sieve tank (6).
3. The nitrogen generator for laser welding according to claim 2, wherein: Another first multi-way gas pipe (4) at the bottom position of the double-control solenoid valve (3) is connected to the inlet end of the second tower nitrogen molecular sieve tank (7). The outlet end of the first tower nitrogen molecular sieve tank (6) is connected to a second solenoid valve (16). The outlet end of the second tower nitrogen molecular sieve tank (7) is connected to a third solenoid valve (17). The third solenoid valve (17) and the second solenoid valve (16) are connected to the inlet end of the converging elbow (8) through a "U"-shaped gas pipe member. The third solenoid valve (17) and the second solenoid valve (16) are arranged opposite to each other front and back.
4. A nitrogen machine for laser welding according to claim 1, characterized in that: Above the front end face of the metal cabin (1), an air inlet and outlet pressure gauge (20), a nitrogen tank pressure gauge (19), and a tower tank pressure gauge (18) are successively arranged from left to right. A group of tower tank pressure gauges (18) are respectively connected to the outlet pipelines of the first tower nitrogen molecular sieve tank (6) and the second tower nitrogen molecular sieve tank (7). The air inlet and outlet pressure gauge (20) is connected to the inlet pipeline of the multi-way air inlet (2).
5. The nitrogen machine for laser welding according to claim 4, characterized in that: The metal cabin (1) is snap-connected to the nitrogen analysis instrument (12) through a square opening structure provided on the front end face. The nitrogen tank pressure gauge (19) is connected to the outlet pipeline of the second multi-way gas pipe (10). The outlet end of the constant pressure nitrogen storage tank (14) is connected to an outlet elbow (15). The outlet elbow (15) extends to the left rear inner side position of the metal cabin (1).