Nitrogen charging control system for welding of pipeline piece
By designing a control system for welding nitrogen charging of pipeline parts, and using timing procedures and relays to control the solenoid valve, the problems of irregular manual operation and insufficient nitrogen charging time are solved, and an efficient and safe nitrogen charging process is achieved, and the welding quality and efficiency of the air conditioning system are improved.
Patent Information
- Application Number
- CN202421846164.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-01
AI Technical Summary
In the prior art, there are problems such as irregular manual operation, insufficient nitrogen filling time, and loss of nitrogen gas during welding of pipeline parts, resulting in low welding quality and affecting the cooling and heating efficiency of the air conditioning system.
Design a control system for welding nitrogen charging of pipeline parts, including switching power supply, nitrogen charging tooling, time relay, solenoid valve and controller. The timing program is set through the controller, and the time relay controls the charging and deflation time of the solenoid valve to ensure nitrogen charging time, and conducts real-time monitoring and alarm through the display unit and buzzer.
It realizes accurate monitoring and guarantee of the nitrogen filling time of pipe parts, reduces nitrogen loss, improves welding quality and the cooling and heating efficiency of the air conditioning system.
Smart Images
Figure CN223043890U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding control, in particular to a control system for nitrogen filling in pipeline component welding. Background Art
[0002] According to the nitrogen filling process requirements of pipeline components, in order to ensure the welding quality of the two-reactor pipelines and avoid deformation of the nitrogen filling tooling, due to manual operation, there are various influences. Firstly, non-standard manual operation and other factors lead to insufficient nitrogen filling in welding, resulting in oxidation of the inner wall of the workpiece. This nitrogen filling position mainly uses manual direct nitrogen filling with nitrogen filling tooling, and it is easy to have uncontrollable factors such as missed nitrogen filling and insufficient nitrogen filling time, resulting in a large amount of welding oxide scale, and manual purging is required again, causing large environmental pollution. In actual production, there are situations of mixed use of nitrogen filling tooling and employees randomly taking tooling. Insufficient nitrogen filling duration will also cause a large amount of nitrogen to be lost, and sufficient nitrogen cannot be obtained during the welding process, affecting the nitrogen filling quality and welding quality, resulting in dirt blockage of the air-conditioning pipeline system, frosting of the refrigerant at the dirt blockage, and affecting the refrigeration and heating efficiency of the air conditioner. Summary of the Utility Model
[0003] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a control system for nitrogen filling in pipeline component welding to solve the problems raised in the above background art.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a control system for nitrogen filling in pipeline component welding, including a switching power supply, a nitrogen filling tooling, a time relay, a solenoid valve and a controller. The switching power supply, the nitrogen filling tooling, the time relay and the solenoid valve are respectively connected to the controller. The solenoid valve is also connected to the time relay. The control system is also provided with a display unit, and the display unit is connected to the controller. The switching power supply and the controller are connected to the 220V mains.
[0005] As a further improvement of the utility model: the display unit at least includes a red light, a yellow light and a green light. The red light is connected to the Y3 pin of the controller, the yellow light is connected to the Y1 pin of the controller, and the green light is connected to the Y2 pin of the controller.
[0006] As a further improvement of the utility model: the solenoid valve is connected to the 8th pin of the time relay through the + pin.
[0007] As a further improvement of the utility model: the switching power supply is connected to the - pin of the solenoid valve through the - pin.
[0008] As a further improvement of the utility model: the 14th pin of the time relay is connected to the Y0 pin of the controller.
[0009] As a further improvement of the utility model: the nitrogen filling tooling is connected to the 0V pin and the X0 pin of the controller.
[0010] As a further improvement of the present utility model: The display unit is further provided with a buzzer, and the buzzer is connected to the Y4 pin of the controller.
[0011] As a further improvement of the present utility model: The nitrogen filling tooling forms a circuit in contact with the nitrogen-filled product.
[0012] As a further improvement of the present utility model: The switching power supply is a 24V switching power supply.
[0013] As a further improvement of the present utility model: The + pin of the switching power supply is connected to the COM1 pin of the controller, and the + pin of the switching power supply is also connected to the COM2 pin of the controller.
[0014] Compared with the prior art, the beneficial effects of the present utility model are:
[0015] The present utility model sets a pipeline nitrogen filling timing program through the controller. After the tooling and the product are in contact, a circuit is formed. The time relay controls the on-off time action of the solenoid valve to ensure the pipeline nitrogen filling time required by the process. By monitoring the trigger signal action of the alarm lamp through the controller, the nitrogen filling time can be monitored in real time to ensure the effectiveness of the nitrogen filling time. If the nitrogen filling time does not reach the specified time, a sound and light alarm will be given, and the nitrogen filling time and number of times can be effectively monitored. Description of the Drawings
[0016] Figure 1 is a schematic structural diagram of the present utility model.
[0017] Figure 2 is a schematic diagram of the module connection structure of the present utility model. Detailed Embodiments
[0018] To make the objectives, technical solutions, and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the specific embodiments of the present utility model and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0019] The present utility model will be further described in conjunction with the accompanying drawings and embodiments: A control system for nitrogen filling during pipeline component welding includes a switching power supply, a nitrogen filling tooling, a time relay, a solenoid valve, and a controller. The switching power supply, the nitrogen filling tooling, the time relay, and the solenoid valve are respectively connected to the controller. The solenoid valve is also connected to the time relay. The control system is further provided with a display unit, and the display unit is connected to the controller. The switching power supply and the controller are connected to the 220V mains power.
[0020] The present utility model sets a pipeline nitrogen filling timing program through the controller. After the tooling contacts the product to form a circuit, the time relay controls the solenoid valve to perform the air charging and discharging time action, ensuring the pipeline nitrogen filling time required by the process. By monitoring the triggering signal action of the alarm lamp through the controller, the nitrogen filling time can be monitored in real time to ensure the effectiveness of the nitrogen filling time. If the nitrogen filling time does not reach the specified time, an audible and visual alarm will be given, effectively monitoring the nitrogen filling time and times.
[0021] In an embodiment of the present utility model, the display unit at least includes a red light, a yellow light, and a green light. The red light is connected to the Y3 pin of the controller, the yellow light is connected to the Y1 pin of the controller, and the green light is connected to the Y2 pin of the controller.
[0022] In an embodiment of the present utility model, the solenoid valve is connected to the 8th pin of the time relay through the + pin.
[0023] In an embodiment of the present utility model, the switching power supply is connected to the - pin of the solenoid valve through the - pin.
[0024] In an embodiment of the present utility model, the 14th pin of the time relay is connected to the Y0 pin of the controller.
[0025] In an embodiment of the present utility model, the nitrogen filling tooling is connected to the 0V pin and the X0 pin of the controller.
[0026] In an embodiment of the present utility model, the display unit is further provided with a buzzer, and the buzzer is connected to the Y4 pin of the controller.
[0027] In an embodiment of the present utility model, the nitrogen filling tooling contacts the nitrogen filling product to form a circuit.
[0028] In an embodiment of the present utility model, the switching power supply is a 24V switching power supply.
[0029] In an embodiment of the present utility model, the + pin of the switching power supply is connected to the COM1 pin of the controller, and the + pin of the switching power supply is also connected to the COM2 pin of the controller.
[0030] The utility model realizes the nitrogen filling of pipeline parts through a control system for welding and nitrogen filling of pipeline parts. The utility model is realized based on the built-in control program of the controller, and this control program is controlled according to the timing program of the prior art, that is, a control program that controls a certain step at a certain moment. Since the nitrogen filling rate of the nitrogen filling tooling in this application remains unchanged, the nitrogen filling of the nitrogen filling product can be accurately carried out by controlling the nitrogen filling time, and the switching of the signal lamp is controlled according to the nitrogen filling time. The progress of nitrogen filling can be known according to the signal lamp.
[0031] The control system consists of: programmable logic controller FX3U-16MT-ES-A (Mitsubishi), switching power supply LRS-150-24 (Mean Well), three-color lamp (including LED bulb / DC24V) TPTB5-L73-ROG, solenoid valve VQ21A1-5G-C6-F (SMC). The control system can ensure sufficient nitrogen during the welding process, reduce the oxygen content inside the pipeline, thereby reducing the generation of oxide scale and improving the welding quality. The system is powered by 24V and filled with 0.6Mpa nitrogen. When the nitrogen filling tooling contacts the product, it can automatically inflate, and the operation is simple.
[0032] The nitrogen filling system is connected to the nitrogen filling tooling. The pipeline nitrogen filling timing program is set through the Mitsubishi PLC. After the tooling contacts the product, a circuit is formed. The time relay controls the charging and discharging time action of the solenoid valve to ensure the pipeline nitrogen filling time required by the process.
[0033] The utility model designs and manufactures a control system for welding and nitrogen filling, which can realize automatic nitrogen filling for pipeline welding and automatically disconnect after nitrogen filling.
[0034] The nitrogen filling system is connected to the nitrogen filling tooling (copper pipe). The pipeline nitrogen filling timing program is set through the controller. After the nitrogen filling tooling contacts the product, a circuit is formed. The time relay controls the charging and discharging time action of the solenoid valve to ensure the pipeline nitrogen filling time required by the process.
[0035] The nitrogen filling control system has the following characteristics: The control system is connected to the on-site nitrogen filling tooling. By setting the pipeline nitrogen filling timing program through the controller PLC, after placing the nitrogen filling tooling in contact with the pipeline components, the control system is automatically powered on, and the time relay is automatically connected to control the solenoid valve for inflation. At this time, the yellow light of the three-color lamp flashes. After the inflation reaches the set time, the green light is on. The controller PLC controls the time relay to automatically disconnect, and the solenoid valve disconnects to cut off the gas supply, ensuring the nitrogen filling time of the pipeline required by the process. This system also includes an alarm function. By using the controller PLC program to monitor the trigger signal action of the alarm lamp, it is possible to realize real-time second counting of the nitrogen filling time to ensure the effectiveness of the nitrogen filling time. If the nitrogen filling time does not reach the specified time, an audible and visual alarm will be issued. To perform the secondary nitrogen filling operation, the alarm will only stop when the nitrogen filling duration is met. It can effectively monitor the nitrogen filling time and times. The design of the control system of this application aims to improve the nitrogen filling efficiency and quality during the pipeline welding process, reduce nitrogen loss and waste, avoid the problem of dirt blockage in the pipeline system, improve the refrigeration and heating efficiency of the air-conditioning pipeline system, and effectively reduce after-sales complaints.
[0036] In summary, the control system for nitrogen filling during the welding of this set of pipeline components can accurately monitor the nitrogen filling duration through PLC automation control, providing an efficient, safe, and standardized nitrogen filling solution for pipeline welding. This control system not only improves the welding quality but also optimizes the production process and reduces production costs.
[0037] In the embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of the units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
[0038] In summary, after reading the documents of this utility model, various other corresponding transformation schemes made by those of ordinary skill in the art without creative mental labor according to the technical solutions and technical concepts of this utility model all fall within the scope protected by this utility model.
Claims
1. A control system for nitrogen filling during pipe welding, characterized in that: It includes a switching power supply, a nitrogen filling tool, a time relay, a solenoid valve and a controller. The switching power supply, the nitrogen filling tool, the time relay and the solenoid valve are respectively connected to the controller. The solenoid valve is also connected to the time relay. The control system is also provided with a display unit, which is connected to the controller. The switching power supply and the controller are connected to 220V AC power.
2. A control system for nitrogen filling during pipe welding according to claim 1, characterized in that: The display unit at least includes a red light, a yellow light and a green light. The red light is connected to the Y3 pin of the controller, the yellow light is connected to the Y1 pin of the controller, and the green light is connected to the Y2 pin of the controller.
3. A control system for nitrogen filling during pipe welding according to claim 1, characterized in that: The solenoid valve is connected to the 8th pin of the time relay via the + pin.
4. A control system for nitrogen filling during pipe welding according to claim 1, characterized in that: The switch power supply is connected to the first pin of the solenoid valve through the first pin.
5. A control system for nitrogen filling during pipe welding according to claim 1, characterized in that: The 14th pin of the time relay is connected to the Y0th pin of the controller.
6. A control system for nitrogen filling during pipe welding according to claim 1, characterized in that: The nitrogen filling tool is connected to the 0V pin and the X0 pin of the controller.
7. A control system for nitrogen filling during pipe welding according to claim 1, characterized in that: The display unit is also provided with a buzzer, and the buzzer is connected to the Y4 pin of the controller.
8. A control system for nitrogen filling during pipe welding according to claim 1, characterized in that: The nitrogen filling tool contacts the nitrogen filling product to form a loop.
9. A control system for nitrogen filling during pipe welding according to claim 1, characterized in that: The switching power supply is a 24V switching power supply.
10. A control system for nitrogen filling during pipe welding according to claim 1, characterized in that: The +th pin of the switching power supply is connected to the COM1th pin of the controller, and the +th pin of the switching power supply is also connected to the COM2th pin of the controller.