Gas source control device and gas welding equipment

Abstract

The utility model discloses a gas source control device and gas welding equipment, which are applied to the field of safety supervision of the gas welding equipment, are used for solving the problem of poor safety in the production and use process of the gas welding equipment, and specifically comprise a data acquisition module, a control module, a valve driving module and at least one safety valve, the data acquisition module is used for acquiring environment data and working data of monitoring points of gas welding equipment; the control module is used for generating a valve control instruction according to the environment data and the working data; the valve driving module is used for controlling the safety valve to open or close according to the valve control instruction; and the safety valves are used for connecting or disconnecting the corresponding gas supply pipelines. Therefore, when the environmental data of the monitoring point exceeds the preset threshold range, the safety valve is controlled through the valve driving module, so that the gas supply pipeline is controlled, safety accidents are avoided, and the safety of the gas welding equipment in the production and use process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the safe supervision technical field of gas welding equipment especially relates to a gas source control device and gas welding equipment. BACKGROUND

[0002] The gas welding equipment is a kind of equipment using the flame generated by the combustion of combustible gas and combustion-supporting gas as heat source to carry out metal welding, with the characteristics of simple equipment, flexible use and strong adaptability, and is widely used in occasions needing flexible welding operation.

[0003] At present, the control of gas welding equipment mainly focuses on the accurate control of welding process, and the safety hazards in the use process of gas welding equipment are not considered, for example, the lack of sufficient safety awareness and operation skills of operating personnel leads to the occurrence of safety accidents such as combustible gas leakage;With the wide application of gas welding equipment in various fields, its use environment is increasingly complex and changeable, which puts forward higher requirements for the safety of gas welding equipment production and use process. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of gas source control device and gas welding equipment to solve the safety of the gas welding equipment production and use process in prior art is poor.

[0005] The technical scheme provided by the utility model is as follows:

[0006] On the one hand, the utility model provides a kind of gas source control device, comprising: data acquisition module, control module, valve drive module and at least one safety valve;

[0007] The output end of data acquisition module is connected with the input end of control module, and the output end of control module is connected with valve drive module;Data acquisition module is set at the monitoring point of gas welding equipment, and each safety valve in at least one safety valve is set on the gas supply pipeline of different gas sources in gas welding equipment, and the control end of each safety valve in at least one safety valve is connected with valve module;

[0008] Data acquisition module is used to collect the environmental data of the monitoring point of gas welding equipment;

[0009] Control module is used to generate valve control instruction according to environmental data and working data;

[0010] Valve drive module is used to control safety valve to open or close according to valve control instruction;

[0011] Safety valve is used to connect or cut off corresponding gas supply pipeline.

[0012] Optionally, data acquisition module includes: temperature and humidity acquisition circuit;

[0013] The temperature and humidity collection circuit comprises at least one temperature and humidity sensor; output ends of each temperature and humidity sensor in the at least one temperature and humidity sensor are connected with the control module respectively; power supply ends of each temperature and humidity sensor are connected with output ends of the second power supply circuit respectively; and the temperature and humidity sensor is arranged at a monitoring point of the gas welding equipment.

[0014] Optionally, the data collection module comprises a combustible gas detection circuit.

[0015] The combustible gas detection circuit comprises a combustible gas sensor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first triode and a first capacitor.

[0016] The first end of the combustible gas sensor is connected with the output end of the first power supply circuit, the second end of the combustible gas sensor is connected with the collector of the first triode, the third end of the combustible gas sensor is connected with the second power supply circuit through the first resistor, and the fourth end of the combustible gas sensor is connected with the control module, the first end of the second resistor and the first end of the first capacitor respectively.

[0017] The second end of the second resistor and the second end of the first capacitor are both connected with the ground.

[0018] The base of the first triode is connected with the control module and the first end of the fourth resistor through the third resistor respectively, and the emitter of the first triode is connected with the ground and the second end of the fourth resistor respectively.

[0019] Optionally, the data collection module comprises a power supply voltage collection circuit.

[0020] The power supply voltage collection circuit comprises at least one first voltage dividing resistor, at least one second voltage dividing resistor, a third capacitor and a fourth capacitor.

[0021] The first end of each first voltage dividing resistor is connected with an internal power supply, and the second end of each first voltage dividing resistor is connected to a voltage detection end.

[0022] The first end of each second voltage dividing resistor is connected to the voltage detection end, and the second end of each second voltage dividing resistor is connected with the ground.

[0023] The first end of the third capacitor is connected with the internal power supply, and the second end of the third capacitor is connected with the ground.

[0024] The first end of the fourth capacitor is connected to the voltage detection end, and the second end of the fourth capacitor is connected with the ground.

[0025] Optionally, the valve driving module comprises a motor, a motor driving chip, a motor interface, a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor.

[0026] The first input end and the second input end of the motor driving chip are connected with the control module respectively, the first output end of the motor driving chip is connected with the first end of the motor interface, and the second output end of the motor driving chip is connected with the second end of the motor interface;

[0027] The first end of the fifth resistor is connected with the third end of the motor interface, the second end of the fifth resistor is connected with the first end of the sixth resistor and the control module respectively, and the second end of the sixth resistor is connected with the ground;

[0028] The first end of the seventh resistor is connected with the fourth end of the motor interface, the second end of the seventh resistor is connected with the first end of the eighth resistor and the control module respectively, and the second end of the eighth resistor is connected with the ground;

[0029] The fifth end of the motor interface is connected with the input end of the motor, and the output end of the motor is connected with the control end of at least one safety valve.

[0030] Optionally, the gas source control device further comprises a communication module;

[0031] The first end of the communication module is connected with the control module, and the second end of the communication module is connected with the external device; the communication module is used for data transmission between the control module and the external device; the communication module comprises at least one of a ZigBee circuit, a WIFI circuit, a 4G circuit, a 5G circuit, an NFC circuit, a Bluetooth circuit and a radio frequency identification circuit.

[0032] Optionally, the 4G circuit comprises a communication chip, an antenna circuit, an eSIM card circuit and a level conversion circuit;

[0033] The first end of the communication chip is connected with the antenna circuit, the second end of the communication chip is connected with the eSIM card circuit, and the third end of the communication chip is connected with the first end of the level conversion circuit; the second end of the level conversion circuit is connected with the control module;

[0034] The communication chip is used for processing the signal received by the antenna circuit and transmitting the processed signal to the level conversion circuit, and is also used for processing the signal received by the level conversion circuit and transmitting the processed signal to the antenna circuit;

[0035] The antenna circuit is used for receiving the signal sent by the external device and sending the signal to the external device;

[0036] The eSIM card circuit is used for providing the communication chip with identity information for accessing the network;

[0037] The level conversion circuit is used for level conversion between the communication chip and the control module.

[0038] Optionally, the 4G circuit further comprises a communication interface circuit;

[0039] The communication interface circuit comprises a USB interface, a main voltage stabilizing diode and a main TVS diode;

[0040] The first end of the USB interface is connected with the communication chip; the positive end of the main voltage stabilizing diode is connected with the power supply end of the USB interface, and the negative end of the main voltage stabilizing diode is connected with the internal power supply; the first end of the main TVS diode is connected with the positive end of the main voltage stabilizing diode, and the second end of the main TVS diode is connected with the ground.

[0041] Optionally, the gas source control device further comprises an audible and light alarm module.

[0042] The first end of the audible and light alarm module is connected with the control module, and the second end of the audible and light alarm module is connected with the third end of the motor interface.

[0043] In another aspect, the utility model provides a kind of gas welding equipment, comprising: gas welding gun, gas source and above-mentioned gas source control device;

[0044] Gas welding gun is connected with gas source by gas supply pipeline, and gas source control device is arranged on gas supply pipeline.

[0045] The beneficial effects of the present utility model are as follows:

[0046] In the gas source control device and the gas welding equipment provided by the present utility model, the data acquisition module is arranged to collect the environmental data and the working data of the monitoring points of the gas welding equipment in real time, and the control module controls the safety valve to connect or cut off the corresponding gas supply pipeline according to the environmental data and the working data through the valve driving module, so that the real-time monitoring of the environmental data or the working data of the monitoring points can be realized. When the environmental data or the working data exceeds the preset threshold range, the safety valve is controlled to cut off the gas supply pipeline through the valve driving module, so that the safety hazards in the environmental and working processes are considered, the occurrence of safety accidents is avoided, and the safety of the production and use process of the gas welding equipment is improved.

[0047] Other features and advantages of the present utility model will be set forth in the subsequent description, and some can become apparent from the description, or can be understood by implementing the present utility model. The purpose and other advantages of the present utility model can be realized and obtained through the structure specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0048] The drawings described herein are used to provide further understanding of the present utility model, constitute a part of the present utility model, and the illustrative embodiments of the present utility model and their description are used to explain the present utility model, and do not constitute improper limitation on the present utility model. In the drawings:

[0049] Figure 1 It is the first kind of structure schematic view of gas source control device in the embodiment of the present utility model;

[0050] Figure 2 It is the second kind of structure schematic view of gas source control device in the embodiment of the utility model;

[0051] Figure 3 It is the third kind of structure schematic view of gas source control device in the embodiment of the utility model;

[0052] Figure 4 It is the fourth kind of structure schematic view of gas source control device in the embodiment of the utility model;

[0053] Figure 5 It is the fifth kind of structure schematic view of gas source control device in the embodiment of the utility model;

[0054] Figure 6 It is the circuit structure schematic view of antenna circuit in the embodiment of the utility model;

[0055] Figure 7 It is the circuit structure schematic view of eSIM card circuit in the embodiment of the utility model;

[0056] Figure 8 It is the circuit structure schematic view of level conversion circuit in the embodiment of the utility model;

[0057] Figure 9 It is the circuit structure schematic view of power filter circuit in the embodiment of the utility model;

[0058] Figure 10 It is the circuit structure schematic view of communication interface circuit in the embodiment of the utility model;

[0059] Figure 11 It is the sixth kind of structure schematic view of gas source control device in the embodiment of the utility model;

[0060] Figure 12 It is the circuit structure schematic view of sound and light warning module in the embodiment of the utility model;

[0061] Figure 13 It is the circuit structure schematic view of power control circuit in the embodiment of the utility model;

[0062] Figure 14 It is the structure schematic view of gas welding equipment in the embodiment of the utility model. DETAILED DESCRIPTION

[0063] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, and are not all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present utility model.

[0064] The utility model embodiment provides a kind of gas source control device, refer to Figure 1 As shown in the drawing, the gas source control device 100 includes: data acquisition module 110, control module 120, valve driving module 130 and at least one safety valve 140;

[0065] The output end of data acquisition module 110 is connected with the input end of control module 120, and the output end of control module 120 is connected with valve driving module 130;Data acquisition module 110 is set in the monitoring point of gas welding equipment, and each safety valve 140 in at least one safety valve 140 is set on the gas supply pipeline 150 of different gas source in gas welding equipment, and the control end of each safety valve 140 in at least one safety valve 140 is connected with valve driving module 130;

[0066] Data acquisition module 110 is used for collecting environmental data and working data of the monitoring point of gas welding equipment;

[0067] Control module 120 is used for generating valve control instruction according to environmental data and working data;

[0068] Valve driving module 130 is used for controlling safety valve 140 to open or close according to valve control instruction;

[0069] Safety valve 140 is used for connecting or cutting off corresponding gas supply pipeline 150.

[0070] In Figure 1The gas source control device shown, the data acquisition module 110 is arranged at the monitoring point of the gas welding equipment, the number of detection points can be one or more, the monitoring point can be the corresponding position on the shell of the gas welding gun in the gas welding equipment, or can be on the gas supply pipeline 150 connected with the electric welding machine of the inert gas source or oxygen gas source in the gas welding equipment. In order to realize the integrated setting of the gas source control device, the monitoring point is generally arranged at the position after the pressure reducing valve on the gas supply pipeline 150 connected with the electric welding machine of the inert gas source or oxygen gas source in the gas welding equipment. The environmental data collected by the data acquisition module 110 can include at least one of environmental temperature data, environmental humidity data and combustible gas concentration data. The working data includes the gas pressure data of the gas supply pipeline 150. The threshold range of the environmental data is pre-stored in the control module 120, and the threshold range corresponding to the environmental data and the working data includes at least one of the environmental temperature threshold range, the environmental humidity threshold range, the combustible gas concentration threshold range and the gas pressure threshold range of the gas supply pipeline 150. The valve driving module 130 controls the safety valve 140 to open or close according to the valve control instruction, so as to connect or cut off the corresponding gas supply pipeline 150. The safety valve 140 remains open during normal use, and the number of safety valves 140 is at least one. One safety valve 140 can be arranged on each gas supply pipeline 150, or only one safety valve 140 can be arranged on the gas supply pipeline 150 connected with the electric welding machine of the inert gas source or oxygen gas source. In order to realize the integrated setting of the gas source control device, the safety valve 140 is generally arranged at the position after the pressure reducing valve on the gas supply pipeline 150 connected with the electric welding machine of the inert gas source or oxygen gas source in the gas welding equipment.

[0071] In practical application, the data acquisition module collects the environmental data and working data of the monitoring point of the gas welding equipment in real time, and inputs the environmental data and working data into the control module. When the received environmental data or working data exceeds the preset threshold range, the control module generates a valve closing control instruction, and the valve driving module cuts off the gas supply pipeline where the safety valve is located according to the valve closing control instruction. When the received environmental data and working data do not exceed the preset threshold range, the control module generates a valve maintaining control instruction, and the valve driving module controls the safety valve to remain open according to the valve maintaining control instruction. In this way, by arranging the data acquisition module to collect the environmental data and working data of the monitoring point of the gas welding equipment in real time, the control module controls the safety valve to connect or cut off the corresponding gas supply pipeline according to the environmental data, working data and preset threshold range through the valve driving module, so that the real-time monitoring of the environmental data or working data of the monitoring point can be realized. When the environmental data or working data exceeds the preset threshold range, the safety hazard in the environmental and working process is considered by cutting off the gas supply pipeline through the valve driving module, so that the occurrence of safety accidents is avoided, and the safety of the gas welding equipment is improved.

[0072] In specific implementation, refer to 2 andFigure 3 As shown, the control module 120 can include a controller 121 and a Bluetooth circuit 122; the output end of the data acquisition module 110 is connected to the input end of the controller 121, the output end of the controller 121 is connected to the valve driving module 130; the communication end of the controller 121 is connected to the Bluetooth circuit. The controller 121 realizes the control function of the control module in the gas welding control terminal, and the Bluetooth circuit 122 is used for data transmission with the user terminal or the cloud server through Bluetooth communication. The control module 120 can also include a controller 123 integrated with Bluetooth communication function; the controller 123 integrated with Bluetooth communication function can realize the control function of the control module in the gas welding control terminal, and can also realize wireless communication with the user terminal or the cloud server through Bluetooth communication.

[0073] In specific implementation, the data acquisition module in the gas source control device has various structures to realize its functions, refer to Figure 4 As shown, the data acquisition module can include: a temperature and humidity acquisition circuit 111;

[0074] The temperature and humidity acquisition circuit 111 includes at least one temperature and humidity sensor XHT; the output end of each temperature and humidity sensor in the at least one temperature and humidity sensor XHT is respectively connected to the control module, and the power supply end of each temperature and humidity sensor XHT is respectively connected to the output end of the second power supply circuit; the temperature and humidity sensor XHT is arranged at the monitoring point of the gas welding equipment.

[0075] In Figure 4 As shown in the gas source control device, the temperature and humidity sensor XHT is used for collecting the environmental temperature data and the environmental humidity data of the monitoring point. When the number of monitoring points is multiple, the number of temperature and humidity sensors XHT is correspondingly set to multiple, in addition, in order to realize accurate collection of the environmental temperature and humidity, multiple temperature and humidity sensors XHT can be arranged at the same monitoring point to realize real-time data collection, and the control module averages the data fed back by the multiple temperature and humidity sensors XHT arranged at the same monitoring point.

[0076] In addition, refer to Figure 4As shown, the power supply circuit 160 inside the gas source control device includes a first power supply circuit 161 and a second power supply circuit 162; the output end VDD1 of the internal power supply is connected with the input end of the first power supply circuit 161, the output end VDD2 of the first power supply circuit 161 is connected with the input end of the second power supply circuit 162, and the output end VDD3 of the second power supply circuit 162 is connected with the corresponding chip in the device; the first power supply circuit 161 is used for converting the first voltage provided by the internal power supply into a second voltage; the second power supply circuit 162 is used for converting the second voltage provided by the first power supply circuit into a third voltage. The power supply of different chips in the device is realized based on the first voltage, the second voltage and the third voltage. The first power supply circuit 161 is composed of a voltage conversion chip capable of converting the first voltage into the second voltage, inherent connection elements of the voltage conversion chip and a filter capacitor arranged at the output end of the voltage conversion chip. The second power supply circuit 162 is composed of a voltage conversion chip capable of converting the second voltage into the third voltage, inherent connection elements of the voltage conversion chip and a filter capacitor arranged at the output end of the voltage conversion chip. Specifically, the first voltage provided by the internal power supply is generally 12V, the second voltage is generally 3.8V, and the third voltage is generally 3.3V.

[0077] In specific implementation, the data acquisition module in the gas source control device has multiple structures to realize its functions, which can be referred to Figure 4 As shown, the data acquisition module 110 can further include a combustible gas detection circuit 112.

[0078] The combustible gas detection circuit includes a combustible gas sensor MP, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first triode P1 and a first capacitor C1.

[0079] The first end of the combustible gas sensor MP is connected with the output end VDD2 of the first power supply circuit, the second end of the combustible gas sensor MP is connected with the collector of the first triode P1, the third end of the combustible gas sensor MP is connected with the output end VDD3 of the second power supply circuit through the first resistor R1, and the fourth end of the combustible gas sensor MP is connected with the control module 120, the first end of the second resistor R2 and the first end of the first capacitor C1 respectively.

[0080] The second end of the second resistor R2 and the second end of the first capacitor C1 are both connected with the ground.

[0081] The base of the first triode P1 is connected with the control module 120 and the first end of the fourth resistor R4 through the third resistor R3 respectively, and the emitter of the first triode P1 is connected with the ground and the second end of the fourth resistor R4 respectively.

[0082] In Figure 4The combustible gas sensor MP is used to collect combustible gas concentration data in real time, the first resistor R1 is used to adjust the current input to the combustible gas sensor MP, and the second resistor R2 and the first capacitor C1 are used to filter the combustible gas concentration data output by the combustible gas sensor MP. The first triode P1 is used to connect or disconnect the combustible gas sensor MP and the ground under the control of the control module 120, so as to control whether the combustible gas sensor MP works. The third resistor R3 is used to limit the base current of the first triode P1, and also can ensure that the first triode P1 has stable current and voltage in the direct current working state, so that the working state of the first triode P1 is more reliable and stable. The fourth resistor R4 is used to prevent the base of the first triode P1 from being suspended, ensure that the first triode P1 is reliably cut off, and avoid that the first triode P1 is misdirected on. Since the combustible gas sensor MP consumes a large amount of power, the first triode P1 controlled by the control module 120 can be used to connect the combustible gas sensor MP and the ground at a preset time interval, so that the combustible gas sensor MP works intermittently.

[0083] In specific implementation, the data acquisition module in the gas source control device has various structures to realize its functions, refer to Figure 4 As shown in the figure, the data acquisition module 110 can also include a power supply voltage acquisition circuit 113.

[0084] The power supply voltage acquisition circuit includes at least one first voltage dividing resistor Rv1, at least one second voltage dividing resistor Rv2, a third capacitor C3 and a fourth capacitor C4.

[0085] The first end of each first voltage dividing resistor Rv1 is connected to the internal power supply, and the second end of each first voltage dividing resistor Rv1 is connected to the voltage detection end.

[0086] The first end of each second voltage dividing resistor Rv2 is connected to the voltage detection end, and the second end of each second voltage dividing resistor Rv2 is connected to the ground.

[0087] The first end of the third capacitor C3 is connected to the internal power supply, and the second end of the third capacitor C3 is connected to the ground.

[0088] The first end of the fourth capacitor C4 is connected to the voltage detection end, and the second end of the fourth capacitor C4 is connected to the ground.

[0089] In Figure 4 As shown in the figure, the third capacitor and the fourth capacitor both play a filtering role, and the at least one first voltage dividing resistor and the at least one second voltage dividing resistor constitute a voltage dividing resistor structure, which reduces the internal power supply to the input end detection voltage input to the control module. The number and resistance value of the first voltage dividing resistor and the second voltage dividing resistor are determined by the first voltage of the internal power supply and the size of the input end detection voltage.

[0090] In a specific implementation, the valve driving module in the gas source control device has various structural implementations to achieve its functions, as shown in Figure 4 The valve driving module 130 includes a motor, a motor driving chip U1, a motor interface J1, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8.

[0091] The first input end and the second input end of the motor driving chip U1 are connected with the control module 120 respectively, the first output end of the motor driving chip U1 is connected with the first end of the motor interface J1, and the second output end of the motor driving chip U1 is connected with the second end of the motor interface J1.

[0092] The first end of the fifth resistor R5 is connected with the third end of the motor interface J1, and the second end of the fifth resistor R5 is connected with the first end of the sixth resistor R6 and the control module 120 respectively; the second end of the sixth resistor R6 is connected with the ground.

[0093] The first end of the seventh resistor R7 is connected with the fourth end of the motor interface J1, and the second end of the seventh resistor R7 is connected with the first end of the eighth resistor R8 and the control module 120 respectively; the second end of the eighth resistor R8 is connected with the ground.

[0094] The fifth end of the motor interface is connected with the input end of the motor, and the output end of the motor is connected with the control end of at least one safety valve.

[0095] In the gas source control device shown in Figure 2 The motor driving chip U1 is used to convert the valve control instruction generated by the control module 120 into a driving signal of the motor. The motor interface J1 is used to realize the electrical connection and signal transmission between the motor and the gas source control device. The fifth resistor R5 and the sixth resistor R6 are used to adjust the voltage input to the control module 120, and the seventh resistor R7 and the eighth resistor R8 are used to adjust the voltage input to the control module 120. The motor can adopt a high-torque reduction motor.

[0096] In a possible implementation, as shown in Figure 4 The gas source control device further includes a communication module 170.

[0097] The first end of the communication module 170 is connected with the control module, and the second end of the communication module 170 is connected with an external device; the communication module is used for data transmission between the control module 120 and the external device; the communication module includes at least one of a ZigBee circuit, a WIFI circuit, a 4G circuit, a 5G circuit, an NFC circuit, a Bluetooth circuit, and a radio frequency identification circuit.

[0098] In the gas source control device shown in Figure 4The communication module 170 communicates with external devices through wired transmission circuits or wireless transmission circuits. The communication module 170 can transmit data between the external devices through at least one of ZigBee circuits, WIFI circuits, 4G circuits, 5G circuits, NFC circuits, Bluetooth circuits, and radio frequency identification circuits, and can also transmit data through wired circuits such as RS485.

[0099] In specific implementation, the 4G circuit in the communication module has various structures to realize its functions, refer to Figure 5 As shown, the 4G circuit in the communication module 170 at least includes a communication chip 171, an antenna circuit 172, an eSIM card circuit 173, and a level conversion circuit 174.

[0100] The first end of the communication chip 171 is connected with the antenna circuit 172, the second end of the communication chip 171 is connected with the eSIM card circuit 173, and the third end of the communication chip 171 is connected with the first end of the level conversion circuit 174; the second end of the level conversion circuit 174 is connected with the control module 120.

[0101] The communication chip 171 is configured to process the signals received by the antenna circuit 172 and transmit the processed signals to the level conversion circuit 174, and is also configured to process the signals received by the level conversion circuit 174 and transmit the processed signals to the antenna circuit 172.

[0102] The antenna circuit 172 is configured to receive signals sent by external devices and send signals to external devices.

[0103] The eSIM card circuit 173 is configured to provide the communication chip 171 with identity information for accessing a network.

[0104] The level conversion circuit 174 is configured to perform level conversion between the communication chip 171 and the control module 120.

[0105] In Figure 5 As shown in the gas source control device, the communication chip 171 is mainly responsible for signal reception, transmission and conversion. The communication chip 171 can send instructions to the antenna circuit 172 to instruct it to receive or transmit signals of a specific frequency, and to decode and process the received signals.

[0106] In specific implementation, refer to Figure 6 As shown, the antenna circuit includes a first inductor L1, a second inductor L2, a third inductor L3, a fourth inductor L4, a ninth resistor R9, a fifth capacitor C5, and a 4G antenna.

[0107] The first end of the first inductor L1 is connected with the first end of the 4G antenna, the second end of the first inductor L1 is connected with the first end of the ninth resistor R9; the first end of the second inductor L2 is connected with the second end of the 4G antenna, the second end of the second inductor L2 is connected with the first end of the ninth resistor R9; the first end of the third inductor L3 is connected with the third end of the 4G antenna, the second end of the third inductor L3 is connected with the first end of the ninth resistor R9; the second end of the ninth resistor R9 is connected with the first end of the fifth capacitor C5 and the communication chip respectively; the second end of the fifth capacitor C5 is connected with the ground; the first end of the fourth inductor L4 is connected with the first end of the ninth resistor R9, the second end of the fourth inductor L4 is connected with the second end of the fifth capacitor C5.

[0108] In specific implementation, referring to Figure 7 As shown in the figure, the eSIM card circuit comprises: a tenth resistor R10, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a first TVS diode D1, a second TVS diode D2, a third TVS diode D3, a fourth TVS diode D4 and an eSIM card; the vcc end of the eSIM card is connected with the USIM1-VDD end of the communication chip; the rst end of the eSIM card is connected with the USIM1-RST end of the communication chip; the clk end of the eSIM card is connected with the USIM1-CLK end of the communication chip; the i / o end of the eSIM card is connected with the USIM1-DATA end of the communication chip; the gnd end of the eSIM card is connected with the ground; the first end of the first TVS diode D1 and the first end of the sixth capacitor C6 are both connected with the i / o end of the eSIM card, the second end of the first TVS diode D1 and the second end of the sixth capacitor C6 are both connected with the ground; the first end of the second TVS diode D2 and the first end of the seventh capacitor C7 are both connected with the rst end of the eSIM card, the second end of the second TVS diode D2 and the second end of the seventh capacitor C7 are both connected with the ground; the first end of the third TVS diode D3 and the first end of the eighth capacitor C8 are both connected with the clk end of the eSIM card, the second end of the third TVS diode D3 and the second end of the eighth capacitor C8 are both connected with the ground; the first end of the tenth resistor R10 is connected with the i / o end of the eSIM card, the second end of the tenth resistor R10 is connected with the vcc end of the eSIM card, the first end of the ninth capacitor C9 and the first end of the fourth TVS diode D4 respectively, the second end of the ninth capacitor C9 and the second end of the fourth TVS diode D4 are connected with the ground.

[0109] In specific implementation, referring to Figure 8As shown, the level conversion circuit comprises: an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a second triode P2 and a third triode P3; an emitter of the second triode P2 is connected with the TXD end of the control module through the eleventh resistor R11, a collector of the second triode P2 is connected with the MAINRXD end of the communication chip through the twelfth resistor R12, the collector of the second triode P2 is further connected with the first RESERVED end of the communication chip through the thirteenth resistor R13, a base of the second triode P2 is connected to a first end of the fifteenth resistor R15 through the fourteenth resistor R14; a second end of the fifteenth resistor R15 is connected with the USB-BOOT end of the communication chip; a first end of the sixteenth resistor R16 is connected with the collector of the second triode P2, and a second end of the sixteenth resistor R16 is connected with the first end of the fifteenth resistor R15; an emitter of the third triode P3 is connected with the MAINTXD end of the communication chip through the seventeenth resistor R17, the emitter of the third triode P3 is further connected with the second RESERVED end of the communication chip through the eighteenth resistor R18, a collector of the third triode P3 is connected with the RXD end of the control module through the nineteenth resistor R19, a base of the third triode P3 is connected to the first end of the fifteenth resistor R15 through the twentieth resistor R20; a first end of the twenty-first resistor R21 is connected with the collector of the third triode P3, and the first end of the twenty-first resistor R21 is connected with the output end VDD3 of the second power supply circuit.

[0110] In a possible implementation, the power supply end of the communication chip is connected with the first power supply circuit through the power supply filtering circuit, wherein the power supply circuit comprises a plurality of capacitors and a first voltage stabilizing diode, wherein the plurality of capacitors comprise two electrolytic capacitors and a plurality of non-polar capacitors; refer to Figure 9As shown, the power supply circuit includes: a first electrolytic capacitor Ci1, a second electrolytic capacitor Ci2, a first non-polar capacitor Ci3, a second non-polar capacitor Ci4, a third non-polar capacitor Ci5, a fourth non-polar capacitor Ci6, a fifth non-polar capacitor Ci7, a sixth non-polar capacitor Ci8, and a first voltage stabilizing diode D5; wherein the first end of the first non-polar capacitor Ci3, the second non-polar capacitor Ci4, the third non-polar capacitor Ci5, the fourth non-polar capacitor Ci6, the fifth non-polar capacitor Ci7, and the sixth non-polar capacitor Ci8 is connected with the positive end of the first electrolytic capacitor Ci1, and the second end of the first non-polar capacitor Ci3, the second non-polar capacitor Ci4, the third non-polar capacitor Ci5, the fourth non-polar capacitor Ci6, the fifth non-polar capacitor Ci7, and the sixth non-polar capacitor Ci8 is connected with the negative end of the first electrolytic capacitor Ci1; the positive end of the first electrolytic capacitor Ci1 is connected with the output end VDD2 of the first power supply circuit, and the negative end of the first electrolytic capacitor Ci1 is connected with the ground; the negative end of the first voltage stabilizing diode D5 is connected with the output end VDD2 of the first power supply circuit, and the positive end of the first voltage stabilizing diode D5 is connected with the ground; the positive end of the second electrolytic capacitor Ci2 is connected with the positive end of the first electrolytic capacitor Ci1 and the VBAT end of the communication chip respectively, and the negative end of the second electrolytic capacitor Ci2 is connected with the ground.

[0111] In a possible implementation, referring to Figure 10 As shown, the 4G circuit in the communication module further includes: a communication interface circuit 176;

[0112] The communication interface circuit includes a USB interface, a main voltage stabilizing diode D6, and a main TVS diode D7;

[0113] The first end of the USB interface is connected with the communication chip; the positive end of the main voltage stabilizing diode D6 is connected with the power supply end of the USB interface, and the negative end of the main voltage stabilizing diode D6 is connected with the internal power supply; the first end of the main TVS diode D7 is connected with the positive end of the main voltage stabilizing diode D6, and the second end of the main TVS diode D7 is connected with the ground.

[0114] In Figure 10 As shown in the gas source control device, the main voltage stabilizing diode D6 and the main TVS diode D7 are used to protect the USB interface from overvoltage impact.

[0115] In a possible implementation, referring to Figure 11 As shown, the gas source control device further includes: an audible and light alarm module 180;

[0116] The first end of the audible and light alarm module 180 is connected with the control module 120, and the second end of the audible and light alarm module 180 is connected with the third end of the motor interface J1.

[0117] In Figure 11The gas source control device shown, the sound and light warning module is used for warning in the form of sound and / or light under the control of the control module. Specifically, refer to Figure 12 The sound and light warning module shown includes a sound warning circuit and an LED indication circuit.

[0118] The sound warning circuit includes a twenty-second resistor R22, a twenty-third resistor R23, a fourth triode P4, a first diode D8, and a buzzer; the emitter of the fourth triode P4 is connected to the ground, the fourth triode P4 is connected to the control module through the twenty-second resistor R22, the collector of the fourth triode P4 is connected to the anode of the first diode D8 and the second end of the buzzer respectively; the cathode of the first diode D8 is connected to the output end VDD3 of the second power supply circuit and the first end of the buzzer respectively; the third end of the buzzer is connected to the ground; the first end of the twenty-third resistor R23 is connected between the control module and the twenty-second resistor R22, and the second end of the twenty-third resistor R23 is connected to the emitter of the fourth triode P4. When the received environmental data or working data exceeds the preset threshold range, the control module controls the fourth triode to be turned on, so that the buzzer sounds an alarm.

[0119] The LED indication circuit includes a battery power indication circuit, a network state indication circuit, and a safety valve state indication circuit. The battery power indication circuit includes a fifth triode P5, a first light emitting diode LED1, a twenty-fourth resistor R24, a twenty-fifth resistor R25, and a twenty-sixth resistor R26. The emitter of the fifth triode P5 is connected to the ground, the base of the fifth triode P5 is connected to the control module through the twenty-fourth resistor R24, the collector of the fifth triode P5 is connected to the negative electrode of the first light emitting diode LED1, and the positive electrode of the first light emitting diode LED1 is connected to the output end VDD2 of the first power supply circuit through the twenty-fifth resistor R25; the first end of the twenty-sixth resistor R26 is connected to the emitter of the fifth triode P5, and the second end of the twenty-sixth resistor R26 is connected to the base of the fifth triode P5. When the input detection voltage received by the control module is lower than the preset threshold, the fifth triode is turned on to make the first light emitting diode be lit up, and the first light emitting diode being lit up corresponds to the state of low battery power.

[0120] The network state indicating circuit comprises a sixth transistor P6, a second light emitting diode LED2, a twenty-seventh resistor R27, a twenty-eighth resistor R28 and a twenty-ninth resistor R29. The emitter of the sixth transistor P6 is connected with the ground, the base of the sixth transistor P6 is connected with the control module through the twenty-seventh resistor R27, the collector of the sixth transistor P6 is connected with the negative terminal of the second light emitting diode LED2, the positive terminal of the second light emitting diode LED2 is connected with the output terminal VDD3 of the second power supply circuit through the twenty-eighth resistor R28; the first end of the twenty-ninth resistor R29 is connected with the emitter of the sixth transistor P6, and the second end of the twenty-ninth resistor R29 is connected with the base of the sixth transistor P6. When the data interaction between the communication module and the control module is abnormal, the control module controls the sixth transistor to be turned on, so that the second light emitting diode is lighted up. The lightening of the second light emitting diode corresponds to the state that the data interaction between the communication module and the control module is abnormal.

[0121] The safe valve state indicating circuit comprises a seventh transistor P7, a third light emitting diode LED3, a thirtieth resistor R30 and a thirty-first resistor R31. The base of the seventh transistor P7 is connected with the control module, the collector of the seventh transistor P7 is connected with the ground, and the emitter of the seventh transistor P7 is connected with the negative terminal of the third light emitting diode LED3; the positive terminal of the third light emitting diode LED3 is connected with the output terminal VDD3 of the second power supply circuit through the thirtieth resistor R30; the first end of the thirty-first resistor R31 is connected with the collector of the seventh transistor P7, and the second end of the thirty-first resistor R31 is connected with the base of the seventh transistor P7.

[0122] In a possible implementation, referring to Figure 13 As shown in the figure, the gas source control device can further be provided with a power supply control circuit, and the power supply control circuit comprises a switch S, an optical coupling isolation device, a thirty-second resistor R32, a thirty-third resistor R33, a thirty-fourth resistor R34 and an eighth transistor P8.

[0123] The first end of the switch S is connected with the first end of the optical coupling isolation device through the thirty-second resistor R32, the second end of the switch S is connected with the third end of the optical coupling isolation device, the third end and the fourth end of the switch S are connected with the internal power supply; the second end of the optical coupling isolation device is connected with the ground, and the fourth end of the optical coupling isolation device is connected with the internal power supply; the collector of the eighth transistor P8 is connected with the first end of the optical coupling isolation device, the emitter of the eighth transistor P8 is connected with the ground, the base of the eighth transistor P8 is connected with the control module through the thirty-third resistor R33, and the base of the eighth transistor P8 is further connected with the ground through the thirty-fourth resistor R34. The control module can control whether the gas source control device is connected with the internal power supply by controlling the turn-on and turn-off of the eighth transistor.

[0124] Based on the same concept, the utility model embodiment further provides a gas welding equipment, refer to Figure 14 As shown in the figure, the gas welding equipment 200 includes: a gas welding gun 210, a gas source 220 and the above-mentioned gas source control device 100 provided by the embodiment of the application.

[0125] The gas welding gun 210 is connected with the gas source 220 through a gas supply pipeline, and the gas source control device 100 is arranged on the gas supply pipeline.

[0126] Although the preferred embodiments of the utility model have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model.

[0127] Obviously, those skilled in the art can make various modifications and variations to the utility model embodiments without departing from the spirit and scope of the utility model embodiments. Thus, if these modifications and variations of the utility model embodiments fall within the scope of the utility model claims and their equivalent technologies, the utility model also intends to include these changes and variations.

Claims

1. A gas source control device, characterized in that, The application relates to a gas welding equipment safety valve control system. The system comprises a data acquisition module, a control module, a valve driving module and at least one safety valve. An output end of the data acquisition module is connected with an input end of the control module, and an output end of the control module is connected with the valve driving module. The data acquisition module is arranged at a monitoring point of the gas welding equipment. Each safety valve of the at least one safety valve is arranged on a gas supply pipeline of a different gas source in the gas welding equipment. A control end of each safety valve is connected with the valve driving module. The data acquisition module is used for collecting environmental data and working data of the monitoring point of the gas welding equipment.

2. The gas supply control device of claim 1, wherein, The control module is used for generating a valve control instruction according to the environmental data and the working data. The valve driving module is used for controlling the safety valve to open or close according to the valve control instruction.

3. The gas supply control device of claim 2, wherein, The safety valve is used for connecting or cutting off the corresponding gas supply pipeline. The data acquisition module comprises a temperature and humidity acquisition circuit. The temperature and humidity acquisition circuit comprises at least one temperature and humidity sensor. An output end of each temperature and humidity sensor is connected with the control module. A power supply end of each temperature and humidity sensor is connected with an output end of a second power supply circuit.

4. The gas supply control device of claim 3, wherein The temperature and humidity sensor is arranged at the monitoring point of the gas welding equipment. The data acquisition module comprises a combustible gas detection circuit. The combustible gas detection circuit comprises a combustible gas sensor, a first resistor, a second resistor, a third resistor, a fourth resistor, a first triode and a first capacitor. A first end of the combustible gas sensor is connected with an output end of a first power supply circuit. A second end of the second resistor and a second end of the first capacitor are both connected with the ground. A base of the first triode is connected with the control module and a first end of the fourth resistor through the third resistor.

5. The gas supply control device of claim 1, wherein, An emitter of the first triode is connected with the ground and a second end of the fourth resistor. The data acquisition module comprises a power supply voltage acquisition circuit. The power supply voltage acquisition circuit comprises at least one first voltage dividing resistor, at least one second voltage dividing resistor, a third capacitor and a fourth capacitor. A first end of each first voltage dividing resistor is connected with an internal power supply. A second end of each first voltage dividing resistor is connected with a voltage detection end. A first end of each second voltage dividing resistor is connected with the voltage detection end. A second end of each second voltage dividing resistor is connected with the ground. A first end of the third capacitor is connected with the internal power supply. A second end of the third capacitor is connected with the ground. A first end of the fourth capacitor is connected with the voltage detection end. A second end of the fourth capacitor is connected with the ground. The valve driving module comprises a motor, a motor driving chip, a motor interface, a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor. The first input end and the second input end of the motor drive chip are connected with the control module respectively, the first output end of the motor drive chip is connected with the first end of the motor interface, and the second output end of the motor drive chip is connected with the second end of the motor interface; The first end of the fifth resistor is connected with the third end of the motor interface, the second end of the fifth resistor is connected with the first end of the sixth resistor and the control module respectively, and the second end of the sixth resistor is connected with the ground. The first end of the seventh resistor is connected with the fourth end of the motor interface, the second end of the seventh resistor is connected with the first end of the eighth resistor and the control module respectively, and the second end of the eighth resistor is connected with the ground. The fifth end of the motor interface is connected with the input end of the motor, and the output end of the motor is connected with the control end of at least one safety valve.

6. The gas supply control device of any one of claims 1-5, wherein, Further comprising: A communication module; The first end of the communication module is connected with the control module, the second end of the communication module is connected with an external device, the communication module is used for data transmission between the control module and the external device, and the communication module comprises at least one of a ZigBee circuit, a WIFI circuit, a 4G circuit, a 5G circuit, an NFC circuit, a Bluetooth circuit and a radio frequency identification circuit.

7. The gas supply control device of claim 6, wherein, The 4G circuit comprises a communication chip, an antenna circuit, an eSIM card circuit and a level conversion circuit. The first end of the communication chip is connected with the antenna circuit, the second end of the communication chip is connected with the eSIM card circuit, and the third end of the communication chip is connected with the first end of the level conversion circuit; the second end of the level conversion circuit is connected with the control module; The communication chip is used for processing signals received by the antenna circuit and transmitting the processed signals to the level conversion circuit, and is also used for processing signals received by the level conversion circuit and transmitting the processed signals to the antenna circuit; The antenna circuit is used for receiving signals sent by an external device and sending signals to the external device; The eSIM card circuit is used for providing the communication chip with identity information for accessing a network; The level conversion circuit is used for level conversion between the communication chip and the control module.

8. The gas supply control device of claim 7, wherein, The 4G circuit further comprises a communication interface circuit; The communication interface circuit comprises a USB interface, a main voltage stabilizing diode and a main TVS diode; The first end of the USB interface is connected with the communication chip; the positive electrode end of the main voltage stabilizing diode is connected with the power supply end of the USB interface, the negative electrode end of the main voltage stabilizing diode is connected with an internal power supply, the first end of the main TVS diode is connected with the positive electrode end of the main voltage stabilizing diode, and the second end of the main TVS diode is connected with the ground.

9. The gas supply control device of claim 5, wherein, Further comprising: An acousto-optic alarm module; The first end of the acousto-optic alarm module is connected with the control module, and the second end of the acousto-optic alarm module is connected with the third end of the motor interface.

10. A gas welding apparatus characterised in that, Comprise: A gas welding gun, a gas source and the gas source control device according to any one of claims 1-9; The first end of the USB interface is connected with the communication chip; the positive electrode end of the main voltage stabilizing diode is connected with the power supply end of the USB interface, the negative electrode end of the main voltage stabilizing diode is connected with an internal power supply, the first end of the main TVS diode is connected with the positive electrode end of the main voltage stabilizing diode, and the second end of the main TVS diode is connected with the ground. The gas welding torch is connected with the gas source through a gas supply pipeline, and the gas source control device is arranged on the gas supply pipeline.

Images