Welding flux temperature control device and method for straight seam steel pipe welding
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA NAT PETROLEUM CORP
- Filing Date
- 2026-02-11
- Publication Date
- 2026-05-22
AI Technical Summary
The temperature decay and moisture regain of the flux during transportation cause unstable welding quality. Existing heating devices cannot be precisely adjusted, resulting in localized overheating or underheating of the flux, which affects the welding quality.
The system employs a segmented insulation module and a closed-loop feedback control algorithm. The flux is pre-dried by the drying module, and the temperature is monitored in real time during the transportation process. The heating power of each insulation section is adjusted by the central control module to ensure that the flux temperature is within the target range.
Stable flux temperature and moisture content significantly reduce welding defects, improve welding quality, save energy, and reduce costs.
Smart Images
Figure CN122072491A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of flux treatment technology, and specifically relates to a flux temperature control device and method for welding straight seam steel pipes. Background Technology
[0002] In the welding process of straight seam steel pipes, especially those used in high-end fields such as long-distance oil and gas transmission, submarine pipelines, and nuclear power, the quality of the flux plays a decisive role in the formation and performance of the weld. To prevent welding defects such as porosity and cracks, the process requires that the flux be thoroughly dried before use to control its moisture content at an extremely low level (e.g., ≤0.03%) and maintained at a specific temperature (e.g., ≥120℃) to prevent it from reabsorbing moisture from the air during transportation and use.
[0003] Current flux treatment methods typically involve a single drying process. After drying, the high-temperature flux often flows through ordinary pipelines and transfer tanks without insulation or heating measures during its transport from the drying equipment to the welding station. Due to the long transport path and large ambient temperature differences, the flux temperature rapidly decreases, and by the time it reaches the welding station, the temperature has dropped significantly. Furthermore, it easily reabsorbs moisture from the air, resulting in a severely excessive moisture content and greatly diminishing the effectiveness of the initial drying process.
[0004] To compensate for temperature decay during flux delivery, secondary heating is often chosen. However, existing heating devices mostly employ simple open-loop control or on-off control, which cannot dynamically and precisely adjust the power according to the actual temperature of the flux. This crude heating method results in excessive temperature fluctuations, easily causing localized overheating and melting of the flux, leading to agglomeration, or insufficient heating to achieve the desired heat preservation effect, seriously affecting the physical properties of the flux and the stability of welding quality. Summary of the Invention
[0005] To address the aforementioned problems in the prior art, namely the issues of flux temperature decay and moisture regain, one embodiment of this application provides a flux temperature control device for welding straight seam steel pipes, comprising:
[0006] A drying module is used to dry the flux according to a first preset temperature range; The segmented insulation module is connected to the outlet of the drying module and is used to keep the flux warm throughout the entire process of the flux being transported from the drying module to the welding station. The segmented insulation module includes at least two insulation sections with different functions and independent heating functions. A temperature sensing module is installed in the insulation section to obtain the temperature information of the flux as it flows through each insulation section in real time. The central control module is electrically connected to the temperature sensing module and the heating function of each insulation section. The central control module is configured to adjust the heating power of each insulation section based on the temperature information obtained from the temperature sensing module and using a preset closed-loop feedback control algorithm, so that the temperature of the flux when it reaches the welding station is maintained within the preset target temperature range.
[0007] As a preferred embodiment, the segmented insulation module includes: The transfer insulation tank, as the first insulation section, is used to receive and temporarily store flux from the drying module; The pressure feeding tank heating unit, as the second insulation section, is connected to the transfer insulation tank and is used to receive the flux from the transfer insulation tank and keep the flux warm based on a second preset temperature range. The insulated pipeline unit, as the third insulation section, has its inlet connected to the outlet of the heating unit of the pressure tank, and its outlet faces the welding station.
[0008] In a preferred embodiment, the drying module is a rotary drying oven, which has a rotatable furnace body for continuously turning the flux during the drying process.
[0009] As a preferred embodiment, the inner wall of the rotary drying oven is provided with inclined lifting plates, which are used to drive the flux to complete the tumbling and mixing when the oven rotates.
[0010] As a preferred embodiment, the rotary drying oven is equipped with an exhaust port and a humidity sensor. The humidity sensor is used to monitor the humidity inside the oven, and the exhaust port is used to discharge the water vapor generated during the drying process outside the oven so that the humidity inside the oven is lower than a preset humidity threshold.
[0011] In a preferred embodiment, the central control module is also used to adjust the heating power of the drying module and / or the exhaust volume of the exhaust port so that the humidity inside the furnace is lower than a preset humidity threshold.
[0012] In a preferred embodiment, the device further includes a compressed air dryer connected to the air path of the pressure tank heating unit for introducing dried compressed air into the pressure tank heating unit.
[0013] In a preferred embodiment, the device also includes an audible and visual alarm electrically connected to the central control module; The central control module is also configured to: in response to detecting that the temperature of any insulation section deviates from the preset target temperature range, control the audible and visual alarm to issue an alarm signal and simultaneously suspend the delivery of flux.
[0014] As a preferred implementation, the closed-loop feedback control algorithm preset in the central control module is a control algorithm based on proportional, integral, and derivative adjustment.
[0015] On the other hand, one embodiment of this application proposes a method for controlling the temperature of welding flux for straight seam steel pipes, which is executed by the aforementioned temperature control device for welding flux for straight seam steel pipes, including: The flux is dried according to the first preset temperature range; The dried flux is conveyed to the welding station through a segmented insulation module, wherein the segmented insulation module includes at least two insulation sections with different functions and independent heating functions. During the conveying process, the temperature information of the flux is acquired in real time as it flows through each insulation section; Based on temperature information, a preset closed-loop feedback control algorithm is used to adjust the heating power of each insulation zone so that the temperature of the flux when it reaches the welding station is maintained within the preset target temperature range.
[0016] Compared with the prior art, the technical solution provided in this application has at least one of the following beneficial effects: The drying module reduces the moisture content and increases the temperature of the flux; the segmented insulation module maintains the flux's temperature throughout the entire transport process; and the temperature sensing module acquires real-time temperature information of the flux as it flows through each insulation section. This allows the central control module to adjust the heating power of each insulation section based on the temperature information, ensuring that the flux's temperature remains stable within the preset target range and its moisture content remains at an extremely low level when it finally arrives at the welding station. This fundamentally solves the problem of secondary moisture regain in the flux caused by temperature decay in existing technologies, guaranteeing the high quality of the flux. Simultaneously, because the temperature and moisture content of the flux are reliably and stably maintained, defects such as welding porosity and cracks caused by flux quality issues are significantly suppressed. Attached Figure Description
[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a structural block diagram of a flux temperature control device for welding straight seam steel pipes according to one embodiment of this application; Figure 2 This is a flowchart of a flux temperature control method for welding straight seam steel pipes according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a computer system used to implement the methods, apparatus, and electronic devices of this application. Detailed Implementation
[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.
[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0020] This application provides a flux temperature control device for welding straight seam steel pipes, including a drying module, a segmented heat preservation module, a temperature sensing module, and a central control module. The drying module dries the flux according to a first preset temperature range. The segmented heat preservation module maintains the flux temperature throughout its journey from the drying module to the welding station. Each segmented heat preservation module includes at least two functionally distinct heat preservation sections with independent heating capabilities. The temperature sensing module acquires real-time temperature information of the flux as it flows through each heat preservation section. Based on the temperature information acquired from the temperature sensing module, the central control module uses a preset closed-loop feedback control algorithm to adjust the heating power of each heat preservation section, ensuring that the flux temperature remains within the preset target temperature range upon arrival at the welding station. This ensures that the flux temperature is stably maintained within the preset target range upon final arrival at the welding station, and that the moisture content is consistently kept at an extremely low level. This fundamentally solves the problem of secondary moisture regain in flux caused by temperature decay in existing technologies, guaranteeing the high quality of the flux. Meanwhile, because the temperature and humidity of the flux are kept stable and reliable, defects such as welding porosity and cracks caused by flux quality problems are greatly suppressed.
[0021] To more clearly explain the flux temperature control device for welding straight seam steel pipes in this application, the following will be combined with... Figure 1 The steps in the embodiments of this application are described in detail.
[0022] The flux temperature control device for welding straight seam steel pipes according to the first embodiment of this application includes a drying module 100, a segmented heat preservation module 200, a temperature sensing module 300, and a central control module 400. The modules are described in detail below: The drying module 100 is used to dry the flux according to a first preset temperature range.
[0023] Optionally, the flux can be dried within a first preset temperature range using a drying module to perform deep dehydration treatment on the flux, thereby obtaining high-temperature dried flux.
[0024] In one embodiment of this application, the drying module is one or more rotary drying ovens, each having a rotatable furnace body for continuously turning the flux during the drying process. The first preset temperature range is, for example, 200°C to 400°C.
[0025] For example, two 1000L electrically heated rotary drying ovens can be configured, with a heating power of up to 30kW, a temperature adjustment range between 200℃ and 400℃, and a drying time of 30 to 40 minutes. This rotary drying oven has a rotatable furnace body, and its rotation speed can be set to 5-10 r / min, thereby continuously turning the flux during the drying process to ensure uniform heating of the flux particles and avoid localized overheating that could lead to agglomeration.
[0026] To further enhance the tumbling effect and prevent flux accumulation, inclined lifting plates can be installed on the inner wall of the rotary drying oven to drive the flux to complete the tumbling and mixing when the oven rotates.
[0027] For example, three sets of lifting plates at a 30° angle can be set up. When the furnace body rotates, the inclined lifting plates can drive the flux to complete the "lifting-free falling" cycle, scattering the flux and completing the tumbling and mixing, which greatly improves the heating efficiency and uniformity, avoids the flux from accumulating and heating unevenly, and greatly reduces the flux agglomeration rate.
[0028] Furthermore, to achieve deep dehydration of the flux, the rotary drying oven is also equipped with an exhaust port and a humidity sensor. The humidity sensor is used to monitor the humidity inside the oven in real time, and the exhaust port is used to promptly discharge the large amount of water vapor generated during the drying process outside the oven, so that the humidity inside the oven is lower than a preset humidity threshold.
[0029] As an example, the preset humidity threshold can be 30% relative humidity (RH).
[0030] In this embodiment, the central control module can also adjust the heating power of the drying module and / or the exhaust volume of the exhaust port according to the reading of the humidity sensor, so as to ensure that the humidity inside the furnace is stably controlled below the preset humidity threshold.
[0031] The segmented insulation module 200 is connected to the outlet of the drying module and is used to keep the flux warm throughout the entire process of transporting the flux from the drying module to the welding station. The segmented insulation module includes at least two insulation sections with different functions and independent heating functions.
[0032] Optionally, during the entire process from the time the flux is dried to the welding station, the flux can be kept warm in sections using a segmented insulation module to prevent temperature decay of the flux during transportation.
[0033] In this embodiment, the segmented insulation module includes a transfer insulation tank, a pressure conveying tank heating unit, and a conveying pipeline insulation unit.
[0034] The intermediate insulation tank, as the first insulation section, is used to receive and temporarily store flux from the drying module; the pressure conveying tank heating unit, as the second insulation section, is connected to the intermediate insulation tank and is used to receive flux from the intermediate insulation tank and keep the flux warm based on a second preset temperature range; the conveying pipeline insulation unit, as the third insulation section, has its inlet connected to the outlet of the pressure conveying tank heating unit, and its outlet faces the welding station.
[0035] As an example, the second preset temperature range could be 120°C to 130°C.
[0036] In one embodiment of this application, the transfer and insulation tank can be configured with two 150L double-layer jacketed tanks, with the inner layer made of stainless steel and the outer layer wrapped with insulation cotton, and equipped with a 2kW electric heating tube. The transfer and insulation tank can stably maintain the flux temperature at 150℃±3℃.
[0037] In one embodiment of this application, in order to compensate for the temperature loss in this stage, the pressure feeding tank heating unit is configured as two matching pressure feeding tanks, with electric heating elements with a total power of 5kW laid on the tank wall, and the temperature set at 120~130℃ to maintain the temperature of the flux inside the tank.
[0038] Furthermore, to prevent moisture in the compressed air from causing secondary contamination to the highly dried flux, the device also includes a compressed air dryer, the outlet of which is connected to the air passage of the pressure tank, for introducing deeply dried compressed air into the pressure tank.
[0039] Among them, the standard for compressed air after deep drying treatment can be dew point ≤ -40℃ and pressure 0.4-0.6MPa.
[0040] Introducing dry air into the pressure conveying process can further prevent secondary pollution, significantly improve the recycling rate of old flux, and reduce the procurement cost of new flux.
[0041] In one embodiment of this application, the conveying pipeline insulation unit adopts a conveying pipeline with heat tracing function, such as an electric heat tracing ceramic pipe with an outer diameter of 80mm. Its heat tracing power can be set to 20W / m, the set temperature is 150℃, and the outer layer of the pipeline is wrapped with 50mm thick rock wool insulation cotton to minimize the loss of heat to the environment and ensure that the flux temperature inside the pipeline is always maintained above 140℃.
[0042] The temperature sensing module 300 is set in the heat preservation section to obtain the temperature information of the flux as it flows through each heat preservation section in real time.
[0043] Optionally, the temperature sensing module consists of multiple temperature sensing devices, which are respectively set in the above-mentioned insulation sections, such as the bottom of the transfer insulation tank, the pressure tank, and at intervals (e.g., 5 meters) along the conveying pipeline, to obtain the temperature information of the flux flowing through each key node in real time, providing a data basis for the central control module.
[0044] Furthermore, a temperature sensing device can be installed inside the drying module to collect the temperature of different areas inside the oven in real time.
[0045] In one embodiment of this application, the temperature sensing module is equipped with 11 sets of PT100 sensors, covering the primary drying module (3 sets) and the secondary heat preservation and heating module (2 sets of transfer tanks, 2 sets of pressure conveying tanks, and 4 sets of conveying pipes), with a sampling frequency of 1 time / 10s to acquire the temperature data of each node in real time.
[0046] The central control module 400 is electrically connected to the temperature sensing module and the heating function of each heat preservation section. The central control module is configured to adjust the heating power of each heat preservation section based on the temperature information obtained from the temperature sensing module and using a preset closed-loop feedback control algorithm, so that the temperature of the flux when it reaches the welding station is maintained within the preset target temperature range.
[0047] Optionally, the central control module is electrically connected to the temperature sensing module and the heating functions of each insulation section and drying module, such as the drying oven heater, transfer tank heating element, pressure tank heating element, and conveying pipe heat tracing power supply. It has a built-in temperature control data block that independently and dynamically adjusts the heating power of each heating function through a preset closed-loop feedback control algorithm to ensure temperature stability.
[0048] In one embodiment of this application, the preset closed-loop feedback control algorithm can be a proportional, integral, and derivative control algorithm (PID).
[0049] In this way, temperature loss caused by changes in ambient temperature and fluctuations in flux flow can be actively compensated, ensuring that the final temperature of the flux when it reaches the welding station after being transported over long distances of tens or even hundreds of meters can be accurately maintained within the preset target temperature range.
[0050] As an example, the preset target temperature range can be 120℃±5℃.
[0051] To further improve the reliability and safety of the system, this device also includes an audible and visual alarm that is electrically connected to the central control module.
[0052] In one embodiment of this application, the central control module is further configured to: upon detecting that the temperature of any insulation section deviates from the preset target temperature range, for example, by more than 10°C, immediately control an audible and visual alarm to issue an alarm signal, such as a flashing red light accompanied by a buzzer, and simultaneously suspend the flux delivery until the fault is cleared and the temperature returns to normal, at which point delivery is allowed to resume. This effectively prevents substandard low-temperature flux from entering the welding process, ensuring welding quality from the source.
[0053] This application takes a straight seam steel pipe production line with an annual output of 100,000 X80 grade oil and gas transmission pipes as an example. The drying module is configured with two HR-1000 electric heating rotary drying furnaces with a heating power of 30kW and a rotating drum speed of 8r / min. Three sets of PT100-A sensors with an accuracy of ±0.5℃ are installed along the axial direction inside the furnace. The furnace top exhaust port is equipped with... The oven uses a stainless steel filter screen and has an exhaust volume of 8 m³ / h. A humidity sensor (model HS-300) monitors the humidity inside the oven in real time, controlling the humidity to ≤30%RH. The inner wall of the rotating drum of the drying oven is equipped with three sets of 30° inclined lifting plates, made of 304 stainless steel, with a height of 80 mm and a spacing of 200 mm.
[0054] The transfer insulation tank is equipped with two 150L double-layer jacketed tanks. The inner layer is made of 304 stainless steel, and the outer layer is wrapped with 50mm rock wool insulation. It is also equipped with a 2kW electric heating tube, model JH-2000. The tank is equipped with a PT100 sensor, the temperature is set to 150℃, and the PID adjustment accuracy is ±1%.
[0055] The pressure tank heating unit consists of two 200L pressure tanks, each with four 1.25kW electric heating elements on the tank walls, for a total power of 5kW. A PT100 sensor is installed at the bottom of each tank, with a temperature setting of 125℃. Heating automatically activates when the temperature drops below 120℃. An SD-0.6 compressed air dryer with a dew point ≤-40℃ and an output pressure of 0.5MPa is also included, connected to the pressure tank's air circuit.
[0056] The insulation unit for the conveying pipeline is configured for a 100-meter-long pipeline, using DRT-80 electric heating ceramic pipe with a heating power of 20W / m, and an outer layer of 50mm rock wool insulation with a thermal conductivity ≤0.04W / (m). K); One PT100 sensor is set every 5m, for a total of 20 sets. In this embodiment, 4 key nodes are actually used: inlet, 25m, 50m, and outlet.
[0057] The central control module uses an S7-1200 programmable logic controller (PLC), model CPU1214C, with built-in PID control program to regulate temperature; it is equipped with a 10-inch touch screen, model KT1071, to display the temperature of each node and the status of the equipment in real time; it is also equipped with an audible and visual alarm, model BBJ-24V, which is triggered when the temperature deviates from the preset target temperature range by ±10℃.
[0058] In this embodiment, HJ431 flux (initial moisture content 0.1%) is fed into a rotary drying oven, with the oven temperature set at 350℃. The PLC collects temperature data via three PT100 sensors. When the oven temperature is below 345℃, the heating power is increased to 30kW; when it is above 355℃, the power is reduced to 25kW. Simultaneously, water vapor is discharged through the exhaust port, and a humidity sensor monitors the oven humidity. When the RH exceeds 30%, the exhaust volume is increased to 10m³ / h. After 35 minutes of drying, the flux moisture content drops to 0.03%. The flux enters the transfer and insulation tank, where the electric heating element is maintained at 150℃±3℃ for 2 minutes via PID control, stabilizing the flux temperature at 148~152℃. The flux is then transferred to the pressure conveying tank, where the electric heating element maintains the temperature at 125℃±5℃, while dry compressed air with a dew point of -45℃ and a pressure of 0.5MPa is introduced to prevent the flux from regaining moisture. The flux is then transported to the welding station via a conveying pipe, where the electric heating ceramic tube maintains the temperature at 145℃±5℃, and rock wool insulation reduces heat loss, ensuring the temperature stabilizes at 122~125℃ upon arrival at the welding station.
[0059] When the sensor detects that the temperature at 50m of the conveying pipe drops to 138℃ (below the set value of 140℃), the PLC immediately increases the heating power to 22W / m and triggers an audible and visual alarm; when the temperature rises back to 142℃, the power is restored to 20W / m and the alarm is deactivated.
[0060] The implementation results of this embodiment are as follows: the flux outlet temperature is 120℃±5℃, the water content is 0.03%, and the temperature fluctuation is ±3℃, which fully meets the stringent requirements of international high-end projects for flux temperature ≥120℃ and water content ≤0.03%; the welding qualification rate of X80 grade steel pipes has increased from 88% to 99.2%, reducing reworked steel pipes by 110 per month and saving rework costs of 55,000 yuan; the average daily energy consumption of a single production line has decreased from 1680kWh to 1176kWh, saving approximately 110,900 yuan in electricity costs annually; the recycling rate of old flux has increased from 75% to 90%, saving 320,000 yuan in new flux procurement costs annually; the dust concentration in the work area is 4.2mg / m³, which meets national standards; the number of manual monitoring personnel has been reduced from 2 to 0, eliminating the risk of high-temperature burns.
[0061] Please see Figure 2The flux temperature control method for welding straight seam steel pipes according to the second embodiment of this application is executed by the above-mentioned flux temperature control device for welding straight seam steel pipes, including steps S10-S40, the specific steps of which are as follows: Step S10: Dry the flux according to the first preset temperature range; Step S20: The dried flux is conveyed to the welding station through a segmented insulation module, wherein the segmented insulation module includes at least two insulation sections with different functions and independent heating functions. Step S30: During the conveying process, the temperature information of the flux as it flows through each insulation section is acquired in real time; Step S40: Based on the temperature information, a preset closed-loop feedback control algorithm is used to adjust the heating power of each heat preservation section so that the temperature of the flux when it reaches the welding station is maintained within the preset target temperature range.
[0062] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process and related descriptions of the method described above can be found in the corresponding processes in the foregoing device embodiments, and will not be repeated here.
[0063] It should be noted that the flux temperature control device and method for welding straight seam steel pipes provided in the above embodiments are only illustrative examples of the above functional module division. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the modules or steps in the embodiments of this application can be further decomposed or combined. For example, the modules in the above embodiments can be merged into one module, or further divided into multiple sub-modules to complete all or part of the functions described above. The names of the modules and steps involved in the embodiments of this application are only for distinguishing each module or step and are not considered as an improper limitation of this application.
[0064] A device according to a third embodiment of this application includes: At least one processor; and a memory communicatively connected to at least one of the processors; The memory stores instructions that can be executed by the processor to implement the above-described flux temperature control method for welding straight seam steel pipes.
[0065] A computer-readable storage medium according to a fourth embodiment of this application stores computer instructions for execution by a computer to implement the above-described flux temperature control method for welding straight seam steel pipes.
[0066] A computer program product according to the fifth embodiment of this application, when run on an electronic device, causes the electronic device to execute the above-described flux temperature control method for welding straight seam steel pipes.
[0067] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes and related descriptions of the electronic devices, computer-readable storage media, and computer program products described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0068] The following is for reference. Figure 3 It shows a schematic diagram of the structure of a computer system for implementing the embodiments of the apparatus, method, and electronic equipment of this application. Figure 3 The server shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.
[0069] like Figure 3 As shown, the computer system includes a Central Processing Unit (CPU) 301, which can perform various appropriate actions and processes based on programs stored in Read Only Memory (ROM) 302 or programs loaded from storage section 308 into Random Access Memory (RAM) 303. The RAM 303 also stores various programs and data required for system operation. The CPU 301, ROM 302, and RAM 303 are interconnected via a bus 304. An Input / Output (I / O) interface 305 is also connected to the bus 304.
[0070] The following components are connected to I / O interface 305: an input section 306 including a keyboard, mouse, etc.; an output section 307 including a cathode ray tube (CRT), liquid crystal display (LCD), and speakers, etc.; a storage section 308 including a hard disk, etc.; and a communication section 309 including a network interface card such as a LAN (Local Area Network) card and a modem, etc. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to I / O interface 305 as needed. Removable media 311, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 310 as needed so that computer programs read from them can be installed into storage section 308 as needed.
[0071] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 309, and / or installed from removable medium 311. When the computer program is executed by central processing unit (CPU) 301, it performs the functions defined in the methods of this application. It should be noted that the computer-readable medium described above in this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example,, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in connection with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on a computer-readable medium can be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.
[0072] Computer program code for performing the operations of this application can be written in one or more programming languages or a combination thereof. These programming languages include object-oriented programming languages such as Java, Smalltalk, and C++, as well as conventional procedural programming languages such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).
[0073] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.
[0074] The terms “first”, “second”, etc., are used to distinguish similar objects, not to describe or indicate a specific order or sequence.
[0075] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.
[0076] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.
Claims
1. A flux temperature control device for welding straight seam steel pipes, characterized in that, include: A drying module is used to dry the flux according to a first preset temperature range; The segmented insulation module is connected to the outlet of the drying module and is used to keep the flux warm throughout the entire process of the flux being transported from the drying module to the welding station. The segmented insulation module includes at least two insulation sections with different functions and independent heating functions. A temperature sensing module is installed in the insulation section to acquire the temperature information of the flux as it flows through each insulation section in real time. The central control module is electrically connected to the temperature sensing module and the heating function of each heat preservation section. The central control module is configured to: based on the temperature information obtained from the temperature sensing module, use a preset closed-loop feedback control algorithm to adjust the heating power of each heat preservation section so that the temperature of the flux when it reaches the welding station is maintained within a preset target temperature range.
2. The flux temperature control device for welding straight seam steel pipes according to claim 1, characterized in that, The segmented insulation module includes: The transfer insulation tank, as the first insulation section, is used to receive and temporarily store the flux from the drying module; The pressure feeding tank heating unit, as the second insulation section, is connected to the transfer insulation tank and is used to receive flux from the transfer insulation tank and keep the flux warm based on a second preset temperature range. The insulated pipeline unit, as the third insulation section, has its inlet connected to the outlet of the heating unit of the pressure tank, and the outlet faces the welding station.
3. A flux temperature control device for welding straight seam steel pipes according to claim 1 or 2, characterized in that, The drying module is a rotary drying oven, which has a rotatable furnace body for continuously turning the flux during the drying process.
4. The flux temperature control device for welding straight seam steel pipes according to claim 3, characterized in that, An inclined lifting plate is provided on the inner wall of the rotary drying oven. The inclined lifting plate is used to drive the flux to complete the tumbling and mixing when the oven rotates.
5. The flux temperature control device for welding straight seam steel pipes according to claim 3, characterized in that, The rotary drying oven is equipped with an exhaust port and a humidity sensor. The humidity sensor is used to monitor the humidity inside the oven, and the exhaust port is used to discharge the water vapor generated during the drying process outside the oven so that the humidity inside the oven is lower than a preset humidity threshold.
6. The flux temperature control device for welding straight seam steel pipes according to claim 5, characterized in that, The central control module is also used to adjust the heating power of the drying module and / or the exhaust volume of the exhaust port so that the humidity inside the furnace is lower than the preset humidity threshold.
7. The flux temperature control device for welding straight seam steel pipes according to claim 2, characterized in that, The device also includes a compressed air dryer connected to the air path of the pressure tank heating unit, for introducing dried compressed air into the pressure tank heating unit.
8. The flux temperature control device for welding straight seam steel pipes according to claim 1, characterized in that, The device also includes an audible and visual alarm that is electrically connected to the central control module. The central control module is also configured to: in response to detecting that the temperature of any insulation section deviates from the preset target temperature range, control the audible and visual alarm to issue an alarm signal and simultaneously suspend the delivery of the flux.
9. A flux temperature control device for welding straight seam steel pipes according to claim 1, characterized in that, The closed-loop feedback control algorithm preset in the central control module is a control algorithm based on proportional, integral, and derivative adjustment.
10. A method for controlling the temperature of welding flux for straight seam steel pipe welding, executed by a welding flux temperature control device for straight seam steel pipe welding as described in any one of claims 1-9, characterized in that, include: The flux is dried according to the first preset temperature range; The dried flux is conveyed to the welding station through a segmented insulation module, wherein the segmented insulation module includes at least two insulation sections with different functions and independent heating functions. During the conveying process, the temperature information of the flux is acquired in real time as it flows through each insulation section; Based on the temperature information, a preset closed-loop feedback control algorithm is used to adjust the heating power of each heat preservation section so that the temperature of the flux when it reaches the welding station is maintained within the preset target temperature range.