Electric welding machine cooling system and liquid deficiency detection method

Abstract

The application provides a welding machine cooling system and a liquid deficiency detection method. The welding machine cooling system comprises a cooling pipeline, a welding machine, a cooling device, a storage tank, a circulating pump, an alarm device and a detection module. The circulating pump can extract the cooling liquid in the storage tank and transport it from the inlet end of the cooling pipeline to the cooling pipeline. The control module can obtain the current working current value of the circulating pump and the current working lift of the circulating pump. When the working current value of the circulating pump is lower than the preset current value and the working lift of the circulating pump is lower than the preset lift, the control module makes the alarm device alarm. The welding machine cooling system in the embodiment can alarm when liquid deficiency occurs, reminding the staff. The liquid deficiency detection method is executed by using the welding machine cooling system in any one of the above embodiments, so that the outside world can process the welding machine cooling system in time according to the information.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding, in particular to a welding machine cooling system and a liquid deficiency detection method. BACKGROUND

[0002] In the related art, the winding and the core inside the welding machine generate a large amount of heat when the welding machine is working, so the welding machine cooling system matched with the welding machine is needed to transfer the heat inside the welding machine. The welding machine cooling system usually uses liquid cooling to dissipate heat inside the welding machine. The cooling liquid in the storage tank is pumped into the cooling pipeline by the flow pump. The cooling liquid in the cooling pipeline enters the welding machine to absorb heat and then is cooled by the cooling device. Finally, it flows back to the storage tank so that it can be pumped into the cooling pipeline again by the flow pump. The liquid deficiency of the welding machine cooling system will cause the cooling effect of the welding machine to decrease. Since the flow in the welding machine cooling system with frequency conversion function changes dynamically, the prior art lacks a detection means to determine whether the welding machine cooling system with frequency conversion function is deficient in liquid. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a welding machine cooling system which can alarm when the welding machine cooling system is deficient in liquid and remind the staff.

[0004] The present application also proposes a liquid deficiency detection method.

[0005] The welding machine cooling system according to the first aspect of the present application utilizes cooling liquid cooling, comprising:

[0006] a cooling pipeline;

[0007] a welding machine arranged in the cooling pipeline and capable of exchanging heat with the cooling liquid in the cooling pipeline;

[0008] a cooling device arranged in the cooling pipeline and capable of cooling the cooling liquid flowing through the cooling pipeline;

[0009] a storage tank for storing the cooling liquid, the inlet end and the outlet end of the cooling pipeline are in communication with the inside of the storage tank;

[0010] a circulating pump capable of pumping the cooling liquid in the storage tank from the inlet end of the cooling pipeline into the cooling pipeline; at the same rotational speed, the circulating pump has a load current value I1 and a load head H1 when it has a certain load, and has an idling current value I0 when it is in an idle state;

[0011] an alarm device;

[0012] A control module is signal connected to the circulating pump and the alarm device, and is capable of obtaining the current working current value I2 of the circulating pump and the current working head H2 of the circulating pump; the control module is configured to make the alarm device alarm when the working current value I2 of the circulating pump is lower than the preset current value I3 and the working head H2 of the circulating pump is lower than the preset head H3; the load current value I1 is greater than the preset current value I3, and the preset current value I3 is greater than or equal to the idling current value I0; and the preset head H3 is lower than the load head H1.

[0013] The electric welding machine cooling system has at least the following beneficial effects: the circulating pump delivers the cooling liquid in the storage tank to the inlet end of the cooling pipeline, so that the cooling liquid can exchange heat with the electric welding machine arranged in the cooling pipeline, thereby cooling the electric welding machine; the cooling liquid can also release the heat absorbed after heat exchange with the electric welding machine at the cooling device and return to the storage tank through the outlet end of the cooling pipeline, so as to be delivered to the cooling pipeline by the circulating pump for the next round of cooling. At a certain rotating speed, the working current value of the circulating pump is positively correlated with the amount of the cooling liquid in the storage tank; when the working current value is lower than the preset current value, it represents that the liquid level of the cooling liquid in the storage tank is lower than that of the cooling liquid in the storage tank with a normal load, and the cooling liquid in the storage tank is at a lower level; when the working head is lower than the preset head, it represents that the content of the cooling liquid currently delivered to the cooling pipeline by the circulating pump is at a lower level, and the content of the cooling liquid in the cooling pipeline is also at a lower level; when the content of the cooling liquid in the storage tank and the content of the cooling liquid in the cooling pipeline are both at a lower level, it represents that the content of the cooling liquid in the electric welding machine cooling system is lower than that in a normal electric welding machine cooling system, and the electric welding machine cooling system has a liquid shortage; therefore, the control module controls the alarm device to alarm according to the working current value lower than the preset current value and the working head lower than the preset head, reminding the on-site staff of the liquid shortage.

[0014] According to some embodiments of the present application, the electric welding machine cooling system further comprises a timer signal connected to the control module; when the working current value I2 of the circulating pump is lower than the preset current value I3 and the working head H2 of the circulating pump is lower than the preset head H3, the timer starts timing and accumulates the time when the working current value I2 is lower than the preset current value I3 and the working head H2 is lower than the preset head H3; and the control module is configured to make the alarm device alarm when the time accumulated by the timer reaches a first preset time.

[0015] According to some embodiments of the present application, the control module is configured to control the electric welding machine cooling system to stop when the time accumulated by the timer reaches a second preset time, and the second preset time is longer than the first preset time.

[0016] According to some embodiments of the present application, the circulating pump has a circulating pump inlet and a circulating pump outlet, and the cooling liquid in the storage tank drawn by the circulating pump passes through the circulating pump inlet and the circulating pump outlet in sequence; the control module comprises a pump inlet pressure sensor and a pump outlet pressure sensor, and the control module obtains the working head H2 according to the detection results of the pump inlet pressure sensor and the pump outlet pressure sensor, the pump inlet pressure sensor is arranged at the circulating pump inlet, and the pump outlet pressure sensor is arranged at the circulating pump outlet.

[0017] According to some embodiments of the present application, the electric welding machine cooling system further comprises a current alarm device, and the current alarm device is signal connected to the control module; the control module is configured to make the current alarm device alarm when the working current value I2 of the circulating pump is lower than the preset current value I3.

[0018] According to some embodiments of the present application, the electric welding machine cooling system further comprises a head alarm device, and the head alarm device is signal connected to the control module; the control module is configured to make the head alarm device alarm when the working head H2 of the circulating pump is lower than the preset head H3.

[0019] According to some embodiments of the present application, the electric welding machine cooling system further comprises a circulating pump alarm device, and the circulating pump alarm device is signal connected to the control module; the control module is configured to make the circulating pump alarm device alarm when the working current value I2 is lower than the idle current value I0.

[0020] According to some embodiments of the present application, the electric welding machine, the cooling device, the circulating pump and the storage tank are all sealingly connected to the cooling pipeline.

[0021] The liquid deficiency detection method according to the second aspect of the embodiments of the present application is executed by the electric welding machine cooling system according to any of the above-mentioned embodiments, and comprises the following steps:

[0022] The working head H2 and the working current value I2 of the circulating pump are continuously acquired;

[0023] When the working head H2 is lower than the preset head H3 and the working current value I2 is lower than the preset current value I3, the information that the electric welding machine cooling system is in liquid deficiency is outputted.

[0024] The liquid deficiency detection method according to the embodiment of the present application has at least the following beneficial effects: at a certain rotating speed, the working current value of the circulating pump is positively correlated with the amount of the cooling liquid in the storage tank, the working current value lower than the preset current value represents that the liquid level of the cooling liquid in the storage tank is lower than the liquid level of the cooling liquid in the storage tank with a normal load, and the cooling liquid in the storage tank is at a lower level; and when the working head is lower than the preset head, it represents that the content of the cooling liquid currently delivered by the circulating pump to the cooling pipeline is at a lower level, and the content of the cooling liquid in the cooling pipeline is also at a lower level. The content of the cooling liquid in the storage tank and the content of the cooling liquid in the cooling pipeline are both at a lower level, which represents that the content of the cooling liquid in the electric welding machine cooling system is lower than the normal content of the cooling liquid in the electric welding machine cooling system, and the electric welding machine cooling system has a liquid deficiency phenomenon; therefore, when the working head is lower than the preset head and the working current value is lower than the preset current value, the information of the liquid deficiency of the electric welding machine cooling system is output, so that the outside can timely process the electric welding machine cooling system according to the information.

[0025] According to some embodiments of the present application, when the working head H2 is lower than the preset head H3 and the working current value I2 is lower than the preset current value I3, the time when the working head H2 is lower than the preset head H3 and the working current value I2 is lower than the preset current value I3 is accumulated, and when the accumulated time reaches a first preset time, the information of the liquid deficiency of the electric welding machine cooling system is output.

[0026] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present application will be further described below in conjunction with the drawings and embodiments, in which:

[0028] Figure 1 The connection schematic diagram of the electric welding machine cooling system for some embodiments of the first aspect of the present application;

[0029] Figure 2 The signal flow direction schematic diagram of the electric welding machine cooling system for some embodiments of the first aspect of the present application;

[0030] Figure 3 The signal flow direction schematic diagram of the electric welding machine cooling system for some embodiments of the second aspect of the present application;

[0031] Figure 4 The signal flow direction schematic diagram of the electric welding machine cooling system for some embodiments of the third aspect of the present application;

[0032] Figure 5 The signal flow direction schematic diagram of the electric welding machine cooling system for some embodiments of the fourth aspect of the present application.

[0033] REFERENCE NUMERALS:

[0034] cooling pipeline 100, inlet end 110, outlet end 120, electric welder inlet 210, electric welder outlet 220, cooling device 300, storage tank 400, circulating pump 500, control module 600, pump inlet pressure sensor 610, pump outlet pressure sensor 620, alarm device 700. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like component have the same or similar designations. The embodiments described below are presented by way of example only and are not intended to limit the present application as the present application can be implemented in a multitude of embodiments and in various forms.

[0036] In the description of the present application, if the orientation description, such as up, down, front, back, left, right, and the like, is described, the orientation or positional relationship shown in the drawings is based on the orientation or positional relationship, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In the description of the present application, if the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, and the like are understood as not including the number, above, below, and the like are understood as including the number. If the first, second, and the like are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0038] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0039] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Please refer to Figure 1 shown in the drawings, wherein Figure 1The electric welding machine is not shown, and only the electric welding machine access inlet 210 and electric welding machine access outlet 220 connected to the internal passage of the electric welding machine are shown, and the application discloses an electric welding machine cooling system cooled by cooling liquid, comprising a cooling pipeline 100, an electric welding machine, a cooling device 300, a storage tank 400, a circulating pump 500, an alarm device 700 and a control module 600; the electric welding machine is arranged in the cooling pipeline 100 and can exchange heat with the cooling liquid in the cooling pipeline 100; the cooling device 300 is arranged in the cooling pipeline 100 and can cool the cooling liquid flowing through the cooling pipeline 100; the storage tank 400 is used for storing the cooling liquid, and the inlet end 110 and the outlet end 120 of the cooling pipeline 100 are both communicated with the inside of the storage tank 400; the circulating pump 500 can extract the cooling liquid in the storage tank 400 and transport it from the inlet end 110 of the cooling pipeline 100 into the cooling pipeline 100.

[0041] The circulating pump 500 transports the cooling liquid in the storage tank 400 from the inlet end 110 of the cooling pipeline 100 into the cooling pipeline 100, so that the cooling liquid can exchange heat with the electric welding machine arranged in the cooling pipeline 100, thereby cooling the electric welding machine; the cooling liquid can also release the heat absorbed after heat exchange with the electric welding machine at the cooling device 300 and return to the storage tank 400 through the outlet end 120 of the cooling pipeline 100, so as to be transported into the cooling pipeline 100 by the circulating pump 500 for the next round of cooling. The electric welding machine cooling system enables the cooling liquid to circulate in the cooling pipeline 100 and continuously cool the electric welding machine in the above-mentioned manner.

[0042] At the same rotating speed, the circulating pump 500 has a load current value I1 and a load head H1 when it has a certain load, and has an idling current value I0 when it is in an idle state. It should be noted that in the variable frequency electric welding machine cooling system, the circulating pump 500 needs to adjust its rotating speed appropriately according to the cooling demand of the electric welding machine, so as to change the flow of the cooling liquid in the cooling pipeline 100; at different rotating speeds, the load current value I1 and the load head H1 of the circulating pump 500 when it has a load may change with the rotating speed, and the above-mentioned load current value I1 and load head H1 can be obtained when the electric welding machine cooling system is in a normal working state.

[0043] Please refer to Figure 2 As shown in the figure, the control module 600 is signal connected to the circulating pump 500 and the alarm device 700, and the control module 600 can obtain the current working current value I2 of the circulating pump 500 and the current working head H2 of the circulating pump 500. The working current value I2 refers to the real-time current value of the circulating pump 500 in the current operation, and the working head H2 refers to the actual head obtained by the control module 600 from the circulating pump 500 in the current operation.

[0044] The present application does not limit the specific way of how the control module 600 obtains the working current value I2 of the circulating pump 500. As some examples of the specific way, in some embodiments, the control module 600 comprises a current sensor, and the control module 600 obtains the working current value I2 of the circulating pump 500 through the current sensor; in other embodiments, the circulating pump 500 comprises a frequency converter, and the frequency converter has a communication interface for outputting the working current value I2 to the control module 600, and the circulating pump 500 is connected to the control module 600 through the communication interface.

[0045] The present application also does not limit the specific way of how the control module 600 obtains the working head H2 of the circulating pump 500. As some examples of the specific way, please refer to Figure 1 As shown in the figure, in some embodiments, the control module 600 comprises a pump inlet pressure sensor 610 and a pump outlet pressure sensor 620, the pump inlet pressure sensor 610 is arranged upstream of the circulating pump 500 in the cooling pipeline 100, and the pump outlet pressure sensor 620 is arranged downstream of the circulating pump 500 in the cooling pipeline 100; the control module 600 can obtain the working head H2 of the circulating pump 500 through the detection results of the pump inlet pressure sensor 610 and the pump outlet pressure sensor 620. Specifically, the control module 600 obtains the pressure value at the position where the pump inlet pressure sensor 610 is arranged through the pump inlet pressure sensor 610, and obtains the pressure value at the position where the pump outlet pressure sensor 620 is arranged through the pump outlet pressure sensor 620, and the control module 600 records the difference between the two pressure values as the working head H2 of the circulating pump 500.

[0046] As a preferred scheme for obtaining the working head H2, please refer to Figure 1 As shown in the figure, wherein Figure 1 The circulating pump inlet and the circulating pump outlet are not shown; in some embodiments, the circulating pump 500 has a circulating pump inlet and a circulating pump outlet, and the cooling liquid in the storage tank 400 drawn by the circulating pump 500 passes through the circulating pump inlet and the circulating pump outlet in sequence; the control module 600 comprises a pump inlet pressure sensor 610 and a pump outlet pressure sensor 620, and the control module 600 obtains the working head H2 according to the detection results of the pump inlet pressure sensor 610 and the pump outlet pressure sensor 620, the pump inlet pressure sensor 610 is arranged at the circulating pump inlet, and the pump outlet pressure sensor 620 is arranged at the circulating pump outlet. Arranging the pump inlet pressure sensor 610 at the circulating pump inlet and arranging the pump outlet pressure sensor 620 at the circulating pump outlet can reduce the kinetic energy lost due to the friction between the cooling liquid and the cooling pipeline 100 when the cooling liquid flows in the cooling pipeline 100, so that the working head H2 obtained by the control module 600 is closer to the actual head, and the measurement error of the working head H2 is reduced.

[0047] In the present application, please refer toFigure 1 , Figure 2 As shown in FIG. 6, the control module 600 is configured to cause the alarm device 700 to alarm when the working current value I2 of the circulating pump 500 is lower than the preset current value I3 and the working head H2 of the circulating pump 500 is lower than the preset head H3; the load current value I1 is greater than the preset current value I3, and the preset current value I3 is greater than or equal to the idling current value I0; and the preset head H3 is lower than the load head H1.

[0048] At a certain rotating speed, the working current value I2 of the circulating pump 500 is positively correlated with the amount of the cooling liquid in the storage tank 400. When the working current value I2 is lower than the preset current value I3, it means that the liquid level of the cooling liquid in the storage tank 400 is lower than the liquid level of the cooling liquid in the storage tank 400 with a normal load, i.e., the cooling liquid in the storage tank 400 is at a lower level. When the working head H2 is lower than the preset head H3, it means that the content of the cooling liquid currently delivered by the circulating pump 500 to the cooling pipeline 100 is at a lower level, and the content of the cooling liquid in the cooling pipeline 100 is also at a lower level. When the content of the cooling liquid in the storage tank 400 and the content of the cooling liquid in the cooling pipeline 100 are both at a lower level, it means that the content of the cooling liquid in the welding machine cooling system is lower than the normal content of the cooling liquid in the welding machine cooling system, i.e., the welding machine cooling system is in a liquid deficiency state. Therefore, the control module 600 controls the alarm device 700 to alarm according to the working current value I2 lower than the preset current value I3 and the working head H2 lower than the preset head H3, so as to remind the on-site staff that the welding machine cooling system is in a liquid deficiency state.

[0049] It should be noted that the load current value I1 and the load head H1 of the circulating pump 500 may change with the rotating speed in the variable-frequency welding machine cooling system as mentioned above. Therefore, the preset current value I3 and the preset head H3 should also be adjusted accordingly with the rotating speed. For example, the preset current value I3 can be 30-90% of the load current value I1 at the current rotating speed (but should be higher than the idling current value I0 of the circulating pump 500 at the same rotating speed), or a value lower than a specific current value of the load current value I1 at the current rotating speed. The preset head H3 can be 40-80% of the load head H1 at the current rotating speed, or a value lower than a specific load value of the load head H1 at the current rotating speed. The skilled person in the art can also adjust the preset current value I3 according to the measurement error of the load current value I1 of the circulating pump 500, or adjust the preset head H3 according to the measurement error of the load head H1 of the circulating pump 500.

[0050] The cooling liquid can be made of a gas-liquid phase change material, which is in liquid state before cooling the electric welding machine, and is changed into gaseous state after flowing through the electric welding machine. The gaseous state cooling liquid is changed into liquid state after passing through the cooling device 300, and finally flows into the storage tank 400. Through the above scheme, the electric welding machine cooling system can absorb more heat of the internal structure of the electric welding machine by using the gasification process of the cooling liquid, and can release more heat at the cooling device 300 by using the liquefaction process of the gaseous state cooling liquid. The gas-liquid phase change material has a small temperature change range in the gasification and liquefaction processes, so that the temperature difference between the gas-liquid phase change material and the internal structure of the electric welding machine can be further maintained when the gas-liquid phase change material absorbs heat from the internal structure of the electric welding machine, and the temperature difference between the gas-liquid phase change material and the heat exchange structure of the cooling device 300 can be further maintained when the gas-liquid phase change material releases heat at the cooling device 300, thereby further ensuring the stability of heat exchange.

[0051] Further, referring to Figure 3 Further, referring to

[0052] Since the electric welding machine cooling system needs to be adjusted frequently during the working process, the working current value I2 and the working head H2 obtained by the control module 600 can fluctuate, and thus the working current value I2 is lower than the preset current value I3 and the working head H2 is lower than the preset head H3 at a certain moment, so that the control system can alarm the alarm device 700 when the electric welding machine cooling system is not short of liquid. Through the above scheme, since the control module 600 needs the timer to alarm the alarm device 700 when the accumulated time reaches the first preset time, the electric welding machine cooling system can avoid the situation that the working current value I2 is temporarily lower than the preset current value I3 and the working head H2 is temporarily lower than the preset head H3 due to the fluctuation of the electric welding machine cooling system, thereby avoiding the false alarm of the alarm device 700. The person skilled in the art can adjust the first preset time according to the duration of the fluctuation of the electric welding machine cooling system.

[0053] In some preferred embodiments, when the working current value I2 is higher than the preset current value I3 or when the working head H2 is higher than the preset head H3, the control module 600 interrupts the timing of the timer and clears the accumulated time length of the timer. Through the above scheme, the timer can restart accumulating the time when the working current value I2 is lower than the preset current value I3 and the working head H2 is lower than the preset head H3, realizing the reuse of the timer, and thus enabling the timer to continuously detect the welding machine cooling system in operation.

[0054] Further, in some embodiments, the control module 600 is configured to control the welding machine cooling system to stop when the time accumulated by the timer reaches a second preset time; the second preset time is longer than the first preset time. Through the above scheme, when the worker does not timely handle the warning of the welding machine cooling system, the control module 600 can directly make the welding machine cooling system stop, avoiding the damage of the devices in the welding machine cooling system.

[0055] Further, please refer to Figure 4 In some embodiments, the welding machine cooling system further comprises a current warning device, the current warning device being signal connected to the control module 600; the control module 600 is configured to make the current warning device warn after the working current value I2 of the circulating pump 500 is lower than the preset current value I3. Through the above scheme, the welding machine cooling system can separately detect whether the working current value I2 is lower than the preset current value I3, which is beneficial for the worker to understand the running condition of the welding machine cooling system.

[0056] Further, in some embodiments, the welding machine cooling system further comprises a circulating pump warning device, the circulating pump warning device being signal connected to the control module 600; the control module 600 is configured to make the circulating pump warning device warn when the working current value I2 is lower than the idling current value I0. For a circulating pump 500 of a certain rotating speed, the idling current value I0 is the minimum value of the working current of the circulating pump 500, and when the working current value I2 is lower than the idling current value I0, it represents that the circulating pump 500 has an abnormal condition, and the circulating pump warning device issues a warning at this time to remind the worker to handle the abnormality of the circulating pump 500.

[0057] Further, please refer to Figure 5As shown, in some embodiments, the electric welding machine cooling system further comprises a head warning device, and the head warning device is signal connected to the control module 600; the control module 600 is configured to make the head warning device warn when the working head H2 of the circulating pump 500 is lower than the preset head H3. Through the above scheme, the electric welding machine cooling system can separately detect whether the working head H2 is lower than the preset head H3, which is beneficial to the staff to understand the running condition of the electric welding machine cooling system.

[0058] Further, in some embodiments, the electric welding machine, the cooling device 300, the circulating pump 500 and the storage tank 400 are all sealingly connected to the cooling pipeline 100. Through the above scheme, the cooling liquid is less likely to flow out to the outside from the connection between the electric welding machine, the cooling device 300, the circulating pump 500, the storage tank 400 and the cooling pipeline 100, the electric welding machine cooling system is less likely to have the conditions of liquid deficiency and liquid leakage, and the risk of the cooling liquid freezing the electric welding machine cooling system in a low-temperature working environment can be reduced, thereby improving the reliability of the system.

[0059] Please refer to Figure 1 As shown, taking the connection between the cooling pipeline 100 and the storage tank 400 as an example, in some embodiments, the electric welding machine cooling system comprises a sealing member, the cooling pipeline 100 is connected to the storage tank 400, and the sealing member is arranged at the connection between the cooling pipeline 100 and the storage tank 400. The sealing member in the above embodiment can be a commonly used waterproof rubber ring, waterproof adhesive tape or waterproof glue, etc. Without departing from the concept of the present application, the sealing member can also be arranged at the connection between the electric welding machine and the cooling pipeline 100, the connection between the circulating pump 500 and the cooling pipeline 100, the connection between the cooling device 300 and the cooling pipeline 100, and the connection between different pipelines inside the cooling pipeline 100, so as to reduce the possibility of liquid deficiency and liquid leakage in the electric welding machine cooling system.

[0060] The present application also proposes a liquid deficiency detection method for the electric welding machine cooling system according to any one of the above embodiments, comprising the following steps:

[0061] Continuously acquiring the working head H2 and the working current value I2 of the circulating pump 500;

[0062] When the working head H2 is lower than the preset head H3 and the working current value I2 is lower than the preset current value I3, outputting the information that the electric welding machine cooling system is in liquid deficiency.

[0063] At a certain rotating speed, the working current value I2 of the circulating pump 500 is positively correlated with the amount of the cooling liquid in the storage tank 400. When the working current value I2 is lower than the preset current value I3, it represents that the liquid level of the cooling liquid in the storage tank 400 is lower than the liquid level of the cooling liquid in the storage tank 400 with a normal load, and the cooling liquid in the storage tank 400 is at a lower level. When the working head H2 is lower than the preset head H3, it represents that the content of the cooling liquid currently delivered by the circulating pump 500 to the cooling pipeline 100 is at a lower level, and the content of the cooling liquid in the cooling pipeline 100 is also at a lower level.

[0064] When the content of the cooling liquid in the storage tank 400 and the content of the cooling liquid in the cooling pipeline 100 are both at a lower level, it represents that the content of the cooling liquid in the electric welding machine cooling system is lower than the normal content of the cooling liquid in the electric welding machine cooling system, and the electric welding machine cooling system has a liquid shortage. Therefore, when the working head H2 is lower than the preset head H3 and the working current value I2 is lower than the preset current value I3, the information of the liquid shortage of the electric welding machine cooling system is output, so that the outside can timely process the electric welding machine cooling system according to the information. As to the specific way of outputting the information of the liquid shortage of the electric welding machine cooling system, in some embodiments, the alarm device can be used to convey the alarm information to the outside, so that the staff manually processes the electric welding machine cooling system; in other embodiments, the corresponding instructions can be sent to the control terminal of the outside, and the control terminal processes the electric welding machine cooling system according to the instructions.

[0065] Further, on the basis of the above method, when the working head H2 is lower than the preset head H3 and the working current value I2 is lower than the preset current value I3, the time when the working head H2 is lower than the preset head H3 and the working current value I2 is lower than the preset current value I3 is accumulated, and when the accumulated time reaches a first preset time, the information of the liquid shortage of the electric welding machine cooling system is output. The above method can avoid the situation that the working current value I2 is temporarily lower than the preset current value I3 and the working head H2 is temporarily lower than the preset head H3 due to the fluctuation of the electric welding machine cooling system, thereby reducing the situation of outputting false information to the outside and increasing the accuracy of the detection method.

[0066] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A cooling system for electric welders using a cooling liquid, characterized in that, The electric welding machine cooling system comprises: a cooling pipeline; an electric welding machine arranged in the cooling pipeline and capable of exchanging heat with the cooling liquid in the cooling pipeline; a cooling device arranged in the cooling pipeline and capable of cooling the cooling liquid flowing through the cooling pipeline; a storage tank for storing the cooling liquid, the inlet end and the outlet end of the cooling pipeline being in communication with the inside of the storage tank; a circulating pump capable of pumping the cooling liquid in the storage tank from the inlet end of the cooling pipeline into the cooling pipeline, the circulating pump having a load current value I1 and a load head H1 under the same rotating speed when carrying a load and an idling current value I0 when being idle; an alarm device; a timer; a control module signal-connected with the circulating pump, the timer and the alarm device, the control module being capable of obtaining the current working current value I2 of the circulating pump and the current working head H2 of the circulating pump, the timer starting timing and accumulating the time when the working current value I2 of the circulating pump is lower than a preset current value I3 and the working head H2 of the circulating pump is lower than a preset head H3, the control module being configured to make the alarm device alarm when the working current value I2 of the circulating pump is lower than the preset current value I3 and the working head H2 of the circulating pump is lower than the preset head H3 and when the time accumulated by the timer reaches a first preset time, the load current value I1 being greater than the preset current value I3, the preset current value I3 being greater than or equal to the idling current value I0, and the preset head H3 being lower than the load head H1.

2. The electric welder cooling system of claim 1, wherein, The control module is configured to control the electric welding machine cooling system to stop when the time accumulated by the timer reaches a second preset time, the second preset time being longer than the first preset time.

3. The electric welder cooling system of claim 1, wherein, The circulating pump has a circulating pump inlet and a circulating pump outlet, the cooling liquid in the storage tank pumped by the circulating pump passing through the circulating pump inlet and the circulating pump outlet in sequence, the control module comprising a pump inlet pressure sensor and a pump outlet pressure sensor, the control module obtaining the working head H2 according to the detection results of the pump inlet pressure sensor and the pump outlet pressure sensor, the pump inlet pressure sensor being arranged at the circulating pump inlet and the pump outlet pressure sensor being arranged at the circulating pump outlet.

4. The welder cooling system of claim 1, wherein, The electric welding machine cooling system further comprises a current alarm device signal-connected with the control module, the control module being configured to make the current alarm device alarm after the working current value I2 of the circulating pump is lower than the preset current value I3.

5. The electric welder cooling system of claim 1, wherein, The electric welding machine cooling system further comprises a head alarm device signal-connected with the control module, the control module being configured to make the head alarm device alarm after the working head H2 of the circulating pump is lower than the preset head H3.

6. The welder cooling system of claim 1, wherein, The electric welding machine cooling system further comprises a circulating pump warning device, which is signal connected to the control module; the control module is configured to make the circulating pump warning device warn when the working current value I2 is lower than the idle current value I0.

7. The welding machine cooling system according to claim 1, characterized in that: The electric welding machine, the cooling device, the circulating pump and the storage tank are all sealingly connected to the cooling pipeline.

8. A method of detecting a lack of fluid, performed using the cooling system of the electric welder of any one of claims 1 to 7, characterized in that, The method comprises the following steps: The working head H2 and working current value I2 of the circulating pump are continuously acquired; When the working head H2 is lower than the preset head H3 and the working current value I2 is lower than the preset current value I3, the time when the working head H2 is lower than the preset head H3 and the working current value I2 is lower than the preset current value I3 is accumulated, and the information that the electric welding machine cooling system is short of liquid is output when the accumulated time reaches the first preset time.

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