Welding gas flow automatic early warning control device

Abstract

The utility model discloses a welding gas flow automatic early warning control device which comprises a pressure transmitter and a pressure controller, the pressure controller is connected with the pressure transmitter, the pressure transmitter is connected with a gas outlet pipe of a welding machine through one end of a wave carrying wire, and the other end of the wave carrying wire is connected with a gas outlet pipe of the welding machine. The transformer is connected to the pressure controller, the end, away from the pressure controller, of the transformer is connected with the welding machine, the transformer is connected with the indicator lamp, the indicator lamp is connected to the pressure controller, and an alarm contact and a contactor are arranged between the pressure controller and the indicator lamp. According to the welding gas flow automatic early warning control device, normal welding is achieved by checking reasons through an alarm fault resetting and eliminating function; the automatic power-off and alarm function is achieved when the gas flow pressure does not meet the production quality requirement, it is guaranteed that constructors find and eliminate problems in time, the product quality is further improved, and the production cost is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the field of marine engineering device manufacturing, and in particular relates to an automatic early warning control device for welding gas flow. Background Art

[0002] At present, the construction of marine steel structures and pipelines mostly adopts metal arc welding and non-metal arc welding. Gas arc welding is most widely used in the field of marine engineering equipment manufacturing due to its high deposition efficiency.

[0003] Since the welding pool is protected by gas, when the flow of the shielding gas is abnormal, the welding pool cannot be effectively protected, defects such as pores are likely to appear in the weld, and the welding quality is difficult to guarantee, resulting in a large amount of additional investment in manpower and materials for the project. When the gas pressure is not enough to protect the welding pool, the welder cannot find and replace the gas in time, which can easily lead to defects such as pores. The cost of manpower, material resources, and construction period caused by rework has been wasted many times in such construction scenarios. When the gas flow is too large, gas waste is caused, and this situation is relatively common. The current welding equipment lacks components to control the flow, and cannot achieve effective early warning and control functions.

[0004] Therefore, it is urgent to design an automatic early warning control device for welding gas flow to solve the above-mentioned problems of automatic early warning and control of welding gas flow. Utility Model Content

[0005] In order to solve the technical problems mentioned in the background technology that the shielding gas flow rate is abnormal, the welding molten pool cannot be effectively protected, defects such as pores are easily generated in the weld, and the welding quality is difficult to guarantee, an automatic early warning control device for welding gas flow is provided to solve the problem of automatic early warning and control of welding gas flow.

[0006] In order to achieve the above-mentioned purpose, the specific technical scheme of the welding gas flow automatic early warning control device of the utility model is as follows:

[0007] A welding gas flow automatic early warning control device comprises a pressure transmitter and a pressure controller. The pressure controller is connected to the pressure transmitter, the pressure transmitter is connected to the gas outlet pipe of the welding machine through one end of a wave carrier line, the end of the wave carrier line away from the gas outlet pipe of the welding machine is connected to the welding gun head, a transformer is connected to the pressure controller, the end of the transformer away from the pressure controller is connected to the welding machine, the transformer is connected to an indicator light, the indicator light is connected to the pressure controller, and an alarm contact and a contactor are provided between the pressure controller and the indicator light.

[0008] Furthermore, the alarm contacts include an upper limit alarm contact and a lower limit alarm contact, and both the upper limit alarm contact and the lower limit alarm contact are connected to the pressure controller.

[0009] Furthermore, the lower limit alarm contact is connected to the sound and light alarm, and one end of the sound and light alarm away from the lower limit alarm contact is connected to the transformer.

[0010] Furthermore, the contactor includes a first contactor and a second contactor, the first contactor is correspondingly provided with a first contact point, and the second contactor is correspondingly provided with a second contact point.

[0011] Furthermore, the first contactor is connected in parallel with the second contactor, the second contact is connected in parallel with a reset button, and the reset button, the first contact and the second contact are all arranged between the pressure controller and the transformer.

[0012] Furthermore, the power port of the welding machine is connected to the power input port, and the end of the power input port away from the welding machine is connected to the transformer.

[0013] Furthermore, the gas outlet pipe of the welding machine is connected to a gas input port, and the gas input port is connected to a pressure transmitter via a signal line.

[0014] Furthermore, the gas inlet is connected to the gas outlet at one end away from the gas outlet of the welding machine, and a third contact is provided between the gas outlet and the gas inlet.

[0015] Furthermore, the gas outlet is connected to the welding gun head.

[0016] Furthermore, the pressure transmitter, the pressure controller and the transformer are all arranged inside the box, and the indicator light is arranged outside the box.

[0017] The welding gas flow automatic early warning control device of the utility model has the following advantages:

[0018] By judging whether the gas pressure exceeds the allowable range of the pressure controller, the alarm contacts are opened or closed, the contactors are attracted or disconnected, the welding gun head is powered on or off, and the indicator light is turned on or off to achieve a warning effect. This application realizes automatic alarm when the flow pressure is too high or too low; the cause is checked through the alarm fault reset elimination function to achieve normal welding; the gas flow pressure does not meet the production quality requirements and the automatic power off and alarm function is realized, so as to ensure that construction personnel can find and eliminate problems in time, further improve product quality, effectively reduce production costs and ensure project production schedule. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the connection circuit of the automatic early warning control device for welding gas flow of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the automatic early warning control device for welding gas flow of the utility model.

[0021] Description of the markings in the figure:

[0022] 1. Pressure transmitter; 2. Pressure controller; 3. Transformer; 4. Upper limit alarm contact; 5. Lower limit alarm contact; 6. Sound and light alarm; 7. First contactor; 8. Second contactor; 9. First contactor; 10. Second contactor; 11. Third contactor; 12. Reset button; 13. Indicator light; 14. Box; 15. Wave carrier line; 16. Welding machine; 17. Welding gun head; 18. Power input port; 19. Gas input port; 20. Gas output port. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0025] Please refer to the attached Figure 1 To Attachment Figure 2 The utility model describes an automatic early warning control device for welding gas flow.

[0026] like Figure 1As shown, the welding gas flow automatic warning control device in the utility model includes a pressure transmitter 1 and a pressure controller 2. The pressure controller 2 is connected with the pressure transmitter 1. The pressure transmitter 1 is connected to the gas outlet pipe of the welding machine 16 through one end of the wave carrier line 15. The end of the gas outlet pipe of the wave carrier line 15 away from the welding machine 16 is connected to the welding gun head 17. The transformer 3 is connected to the pressure controller 2. The end of the transformer 3 away from the pressure controller 2 is connected to the welding machine 16. The transformer 3 is connected to the indicator light 13. The indicator light 13 is connected to the pressure controller 2. An alarm contact and a contactor are provided between the pressure controller 2 and the indicator light 13. By judging whether the gas pressure exceeds the allowable range of the pressure controller, the alarm contact is controlled to be opened or closed, and the contactor is attracted or disconnected, so as to realize the power on or off of the welding gun head 17, and the indicator light 13 is controlled to be turned on or off to realize the warning effect. This application realizes automatic alarm if the flow pressure is too high or too low; through the alarm fault reset elimination function, the cause is found to achieve normal welding; it realizes the automatic power off and alarm function when the gas flow pressure does not meet the production quality requirements, ensuring that construction personnel can find and eliminate problems in time, further improve product quality, effectively reduce production costs and ensure project production schedule.

[0027] Further, if Figure 1 As shown, the alarm contacts include an upper limit alarm contact 4 and a lower limit alarm contact 5, both of which are connected to the pressure controller 2; the lower limit alarm contact 5 is connected to the sound and light alarm 6, and the sound and light alarm 6 is connected to the transformer 3 at one end away from the lower limit alarm contact 5; the contactor includes a first contactor 7 and a second contactor 8, the first contactor 7 is correspondingly provided with a first contact 9, and the second contactor 8 is correspondingly provided with a second contact 10.

[0028] In this embodiment, preferably, the upper limit alarm contact OUT4 and the lower limit alarm contact AUXI5 are both connected to the pressure controller 2, and both the upper limit alarm contact 4 and the lower limit alarm contact 5 can change the signal transmission direction of the signal line.

[0029] The lower limit alarm contact 5 is connected to the sound and light alarm 6. When the lower limit alarm contact 6 is in an open state, the sound and light alarm 6 alarms. The sound and light alarm 6 is connected to the transformer 3, and the transformer 3 supplies power to the device as a whole.

[0030] The first contactor 7 is connected to the second contactor 8, and both the first contactor 7 and the second contactor 8 are connected to the pressure controller 2. The first contactor 7 is connected in series with the first contact 9, and the second contactor 8 is connected in series with the second contact 10. The opening or closing of the first contact 9 and the second contact 10 is determined by the first contactor 7 and the second contactor 8.

[0031] Further, if Figure 1 and Figure 2As shown, the first contactor 7 is connected in parallel with the second contactor 8, the second contact 10 is connected in parallel with the reset button 12, the reset button 12, the first contact 9 and the second contact 10 are all arranged between the pressure controller 2 and the transformer 3; the power port of the welding machine 16 is connected to the power input port 18, and the power input port 18 is connected to the transformer 3 at one end away from the welding machine 16; the gas outlet pipe of the welding machine 16 is connected to the gas input port 19, and the gas input port 19 is connected to the pressure transmitter 1 through a signal line.

[0032] In this embodiment, preferably, the first contactor 7 and the second contactor 8 are arranged in parallel, the second contact 10 and the reset button 12 are arranged in parallel, the first contact 9, the second contact 10 and the reset button 12 are all connected between the pressure controller 2 and the transformer 3, and the first contactor 9, the second contactor 10 and the reset button 12 constitute an alarm fault reset elimination module.

[0033] The power input port 18 is used to connect the transformer 3 and the power port of the welding machine 16, and the gas input port 19 is used to connect the pressure transmitter 1 and the gas outlet pipe of the welding machine 16. The power port of the welding machine 16 is connected to the power input port 18, and power is supplied to the device through the transformer 3; the gas outlet pipe of the welding machine 16 is connected to the gas input port 19 to supply gas to the pressure transmitter 1.

[0034] Further, if Figure 1 As shown, the gas inlet 19 is connected to the gas outlet 20 at one end of the gas outlet pipe away from the welding machine 16, and a third contact 11 is provided between the gas outlet 20 and the gas inlet 19; the gas outlet 20 is connected to the welding gun head 19; the pressure transmitter 1, the pressure controller 2 and the transformer 3 are all arranged inside the box 14, and the indicator light 13 is arranged outside the box 14.

[0035] In this embodiment, the gas output port 20 is used to connect the welding gun head 17, and the gas input port 19 is connected to the gas output port 20 to supply gas to the welding gun head 16. A third contact 11 is provided between the gas output port 20 and the gas input port 19 to control the gas supply amount.

[0036] Preferably, the pressure transmitter 1, the pressure controller 2, the transformer 3, the upper limit alarm contact 4, the lower limit alarm contact 5, the sound and light alarm 6, the first contactor 7, the second contactor 8 and the reset button 12 are all arranged in the box 14, and the indicator light 13 is arranged outside the box 14 to achieve a display function.

[0037] The working principle of the welding gas flow automatic early warning control device in the utility model is as follows:

[0038] First, the allowable pressure range of the pressure controller 2 is set. Within the allowable pressure range, the upper limit alarm contact 4 and the lower limit alarm contact 5 are in the normally closed state, the first contactor 7 is electrically attracted, and the corresponding first contact 9 changes from the normally open state to the normally closed state; after the reset button 12 is pressed to be normally closed, the second contactor 8 is electrically attracted, and the corresponding second contact 10 changes from the normally open state to the normally closed state, the indicator light 13 is on, and the welding gun head 17 is powered on for welding;

[0039] When the gas pressure of the gas outlet pipe of the welding machine 16 exceeds the allowable pressure range of the pressure controller 2, the gas pressure is too high, the upper limit alarm contact 4 is in the open state, and the first contactor 7 and the second contactor 8 are disconnected, the indicator light 13 is off, the welding gun head 17 is powered off, and the sound and light alarm 6 is powered on to alarm;

[0040] When the gas pressure is too low, the lower limit alarm contact 5 is in the open state, and at the same time the first contactor 7 and the second contactor 8 are disconnected, the indicator light 13 goes out, the welding gun head 17 is powered off, and the sound and light alarm 6 is powered on to alarm;

[0041] Re-adjust the pressure of the outlet pipe of the welding machine 16. When the pressure reaches the allowable range of the pressure controller 2, click the reset button 12 to make it normally closed, the first contactor 7 is electrically attracted, and the corresponding first contact 9 changes from a normally open state to a normally closed state, the second contactor 8 is electrically attracted, and the corresponding second contact 10 changes from a normally open state to a normally closed state, the indicator light 13 is on, and the welding gun head 17 is powered on to restart welding.

[0042] Based on the automatic early warning control device for welding gas flow, the utility model determines whether the gas pressure exceeds the allowable range of the pressure controller, and then controls the opening or closing of the upper limit alarm contact 4 and the lower limit alarm contact 5, the attraction or disconnection of the first contactor 7 and the second contactor 8, to realize the power on or off of the welding gun head 17, and control the indicator light 13 to turn on or off to achieve the warning effect. The application realizes automatic alarm when the flow pressure is too high or too low; through the alarm fault reset elimination function, the cause is checked to achieve normal welding; the gas flow pressure does not meet the production quality requirements. Automatic power off and alarm function, ensure that construction personnel can find and eliminate problems in time, further improve product quality, effectively reduce production costs and ensure project production schedule.

[0043] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A welding gas flow automatic early warning control device, characterized in that: It includes a pressure transmitter and a pressure controller. The pressure controller is connected to the pressure transmitter. The pressure transmitter is connected to the air outlet pipe of the welding machine through one end of a wave carrier line. The end of the wave carrier line away from the air outlet pipe of the welding machine is connected to the welding gun head. The transformer is connected to the pressure controller. The end of the transformer away from the pressure controller is connected to the welding machine. The transformer is connected to the indicator light. The indicator light is connected to the pressure controller. Alarm contacts and contactors are provided between the pressure controller and the indicator light.

2. The welding gas flow automatic early warning control device according to claim 1 is characterized in that: The alarm contacts include an upper limit alarm contact and a lower limit alarm contact, and both the upper limit alarm contact and the lower limit alarm contact are connected to the pressure controller.

3. The welding gas flow automatic early warning control device according to claim 2 is characterized in that: The lower limit alarm contact is connected to the sound and light alarm, and one end of the sound and light alarm away from the lower limit alarm contact is connected to the transformer.

4. The welding gas flow automatic early warning control device according to claim 1, characterized in that: The contactor comprises a first contactor and a second contactor. The first contactor is correspondingly provided with a first contact point, and the second contactor is correspondingly provided with a second contact point.

5. The welding gas flow automatic early warning control device according to claim 4, characterized in that: The first contactor is connected in parallel with the second contactor, a reset button is connected in parallel with the second contact, and the reset button, the first contact and the second contact are all arranged between the pressure controller and the transformer.

6. The welding gas flow automatic early warning control device according to claim 1, characterized in that: The welding machine power port is connected to the power input port, and the end of the power input port away from the welding machine is connected to the transformer.

7. The welding gas flow automatic early warning control device according to claim 6, characterized in that: The gas outlet pipe of the welding machine is connected with a gas input port, and the gas input port is connected with a pressure transmitter through a signal line.

8. The welding gas flow automatic early warning control device according to claim 7, characterized in that: The gas input port is connected to the gas output port at one end of the gas outlet pipe away from the welding machine, and a third contact is arranged between the gas output port and the gas input port.

9. The welding gas flow automatic early warning control device according to claim 8, characterized in that: The gas outlet is connected with the welding gun head.

10. The welding gas flow automatic early warning control device according to claim 1, characterized in that: The pressure transmitter, pressure controller and transformer are all arranged inside the box, and the indicator light is arranged outside the box.

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