A method for heating and replenishing a pre-treatment tank of a painting area of a central steam supply region and a related apparatus

Abstract

This application discloses a heating and water replenishment method and related equipment for pre-coating process tanks in a centralized steam supply area. The method includes: exchanging heat between external steam supplied by the centralized steam supply area and intermediate circulating water of a circulating warm water system through a first heat exchange unit to obtain circulating warm water and steam condensate; conveying the circulating warm water to a main warm water supply pipe, and then conveying the circulating warm water to a second heat exchange unit corresponding to each process tank through the main warm water supply pipe, so that the circulating warm water exchanges heat with the tank liquid in each process tank; performing water quality testing on the steam condensate, and replenishing each first-type process tank with steam condensate that meets the water quality standards. The embodiments of this application can generate circulating warm water from external steam for heat exchange in each process tank, while simultaneously using steam condensate that meets the water quality standards for replenishing the first-type process tanks, thus improving the energy utilization rate of steam and the water resource utilization rate. This application can be widely applied in the field of pre-coating technology.

Description

Technical Field

[0001] This application relates to the field of pre-coating treatment technology, and in particular to a heating and water replenishment method and related equipment for a pre-coating treatment tank in a centralized steam supply area. Background Technology

[0002] Coating processes effectively improve the corrosion resistance of automobiles and also provide a certain decorative function, making them widely used in the automotive industry due to their economy and effectiveness. The quality of surface treatment before coating (also known as pretreatment) is a crucial factor directly affecting the coating's service life and decorative effect. The purpose of pretreatment is to remove oil, rust, and other foreign matter from the substrate surface, providing a clean surface suitable for coating and significantly improving coating adhesion and corrosion resistance.

[0003] Automotive pre-treatment processes typically include multiple process tanks such as water washing, degreasing, pre-washing, and zirconium treatment. Different process tanks require maintaining appropriate solution temperatures during operation, and water needs to be replenished based on solution consumption and workpiece carry-over. For pre-treatment production lines located in centralized steam supply areas, external steam can usually be used as a heat source to heat the pre-treatment process tanks.

[0004] In existing pretreatment processes for coating, when external steam is used to heat the process tanks, there are problems such as low steam energy utilization and insufficient heating stability of each process tank. At the same time, each process tank consumes a large amount of water resources, resulting in low economic benefits.

[0005] In summary, the technical problems existing in the relevant technologies need to be improved. Summary of the Invention

[0006] The main objective of this application is to propose a heating and water replenishment method and related equipment for the pre-coating process tank in a centralized steam supply area. The method uses external steam to form circulating warm water for heat exchange in each process tank, while using steam condensate that meets water quality standards for water replenishment in the first type of process tank, thereby improving the energy utilization rate of steam and the water resource utilization rate.

[0007] To achieve the above objectives, one aspect of this application proposes a method for heating and replenishing water in a pre-coating treatment tank in a centralized steam supply area, the method comprising: The external steam supplied by the centralized steam supply area is exchanged with the intermediate circulating water of the circulating warm water system through the first heat exchange unit to obtain circulating warm water and steam condensate. The circulating warm water is transported to the main warm water supply pipe, and then the circulating warm water is transported to the second heat exchange unit corresponding to each process tank through the main warm water supply pipe, so that the circulating warm water exchanges heat with the tank liquid in each process tank. The steam condensate is subjected to water quality testing, and the steam condensate that meets the preset water quality standards is used to replenish water to each of the first-type process tanks; The process tanks include several first-type process tanks and several second-type process tanks. The first-type process tanks are one of a water washing tank, a degreasing tank, and a pre-water washing tank.

[0008] In some embodiments, the first heat exchange unit is a steam-water plate heat exchanger, and the process of exchanging heat between external steam supplied by the centralized steam supply area and intermediate circulating water of the circulating hot water system through the first heat exchange unit includes: The pressure and flow rate of the external steam are regulated; The adjusted external steam is introduced into the primary side of the steam-water plate heat exchanger, so that the intermediate circulating water absorbs heat on the secondary side of the steam-water plate heat exchanger to form the circulating warm water; Collect the steam condensate formed during the heat exchange process of the external steam.

[0009] In some embodiments, the second heat exchange unit is a plate heat exchanger. The step of supplying the circulating warm water to a main warm water supply pipe, and then supplying the circulating warm water through the main pipe to the second heat exchange unit corresponding to each process tank, so that the circulating warm water exchanges heat with the tank liquid in each process tank, includes: The circulating warm water of the circulating warm water system is transported to the main warm water supply pipe by the circulating pump set; Several warm water supply branch pipes are led out from the main warm water supply pipe, and the circulating warm water is transported to the primary side inlet of the plate heat exchanger corresponding to each of the process tanks through each warm water supply branch pipe, so that the circulating warm water and the tank liquid in each process tank can exchange heat independently.

[0010] In some embodiments, the heating and water replenishment method further includes: The circulating warm water discharged from the primary side return port of each of the plate heat exchangers is respectively delivered to the corresponding warm water return branch pipe. The circulating warm water in each of the warm water return branch pipes is drawn into the warm water supply main pipe; By collecting the inlet and return water temperatures of the second heat exchange unit, the water supply flow rate of the main warm water supply pipe is adjusted based on the inlet and return water temperatures.

[0011] In some embodiments, the step of performing water quality testing on the steam condensate and replenishing each type of first-class process tank with steam condensate that meets preset water quality standards includes: The steam condensate is tested for water quality by an online safety monitoring unit, and the steam condensate that meets the preset water quality standards is transported to an insulated buffer storage tank for temporary storage. According to the water replenishment requirements of each of the first type of process tanks, the steam condensate in the heat-insulating buffer storage water tank is transported to each of the first type of process tanks for water replenishment.

[0012] In some embodiments, the step of supplying the steam condensate from the thermal insulation buffer storage tank to each of the first-type process tanks for water replenishment according to their respective water replenishment needs includes: The steam condensate in the insulated buffer storage tank is transported to the condensate distribution main pipe; The steam condensate is transported to each of the first type of process tanks through the condensate distribution main pipe; According to the water replenishment requirements of each of the first type of process tanks, the flow rate of the steam condensate delivered from the condensate distribution main to each of the first type of process tanks is adjusted.

[0013] In some embodiments, the second type of process tank is a pure water washing tank or a zirconification tank, and the heating and water replenishment method further includes: The pure water washing tank and the zirconium treatment tank are replenished with pure water.

[0014] To achieve the above objectives, another aspect of this application provides a heating and water replenishment device for a pre-coating treatment tank in a centralized steam supply area, the device comprising: The first heat exchange module is used to exchange heat between the external steam provided by the centralized steam supply area and the intermediate circulating water of the circulating warm water system through the first heat exchange unit, so as to obtain circulating warm water and steam condensate. The second heat exchange module is used to transport the circulating warm water to the warm water supply main pipe, and through the warm water supply main pipe, the circulating warm water is transported to the second heat exchange unit corresponding to each process tank, so that the circulating warm water exchanges heat with the tank liquid in each process tank. The water replenishment module is used to perform water quality testing on the steam condensate and replenish water to each of the first-type process tanks using the steam condensate that meets the preset water quality standards. The process tanks include several first-type process tanks and several second-type process tanks. The first-type process tanks are one of a water washing tank, a degreasing tank, and a pre-water washing tank.

[0015] To achieve the above objectives, another aspect of this application provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the methods described above.

[0016] To achieve the above objectives, another aspect of the embodiments of this application proposes a computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods described above.

[0017] To achieve the above objectives, another aspect of the embodiments of this application proposes a computer program product, including a computer program that, when executed by a processor, implements the methods described above.

[0018] The embodiments of this application include at least the following beneficial effects: This application provides a heating and water replenishment method and related equipment for a pre-coating process tank in a centralized steam supply area. This scheme uses a first heat exchange unit to exchange heat between external steam and the intermediate circulating water of the circulating warm water system to obtain circulating warm water and steam condensate. This allows the heat of the external steam to be transferred to the circulating warm water first, facilitating the subsequent unified heating of multiple process tanks through the circulating warm water, reducing the heating fluctuations caused by the direct participation of external steam in the heating of each process tank. The circulating warm water is delivered to the second heat exchange unit corresponding to each process tank through the warm water supply main pipe, allowing the circulating warm water to exchange heat with the tank liquid in each process tank. This enables the circulating warm water to independently heat multiple process tanks, improving the stability of the heating effect. By testing the water quality of the steam condensate and using steam condensate that meets the preset water quality standards to replenish the first type of process tank, the steam condensate can be reused under the premise of meeting the replenishment requirements, improving the water resource utilization rate. At the same time, since the temperature of the condensate is relatively high, using condensate for replenishment can effectively reduce the heating pressure on the process tank, thereby further improving the energy utilization rate of steam. Attached Figure Description

[0019] Figure 1 This is a flowchart of the steps of a heating and water replenishment method for a pre-coating process tank in a centralized steam supply area, as provided in an embodiment of this application. Figure 2 This is a schematic diagram of the implementation process of a heating and water replenishment method for a pre-coating treatment tank in a centralized steam supply area, as provided in an embodiment of this application. Figure 3 This is a schematic diagram of the water replenishment process of a heating and water replenishment method for a pre-coating process tank in a centralized steam supply area, provided in an embodiment of this application. Figure 4 This is a schematic diagram of the heating and water replenishment device for a pre-coating process tank in a centralized steam supply area, provided in an embodiment of this application. Figure 5 This is a schematic diagram of the hardware structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit it. In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this application; they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this application as detailed in the appended claims.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0022] The concept of the present invention will now be explained in conjunction with the background art.

[0023] Coating processes effectively improve the corrosion resistance of automobiles and also provide a certain decorative function, making them widely used in the automotive industry due to their economy and effectiveness. The quality of surface treatment before coating (also known as pretreatment) is a crucial factor directly affecting the coating's service life and decorative effect. The purpose of pretreatment is to remove oil, rust, and other foreign matter from the substrate surface, providing a clean surface suitable for coating and significantly improving coating adhesion and corrosion resistance.

[0024] Automotive pre-treatment processes typically include multiple process tanks such as water washing, degreasing, pre-washing, and zirconium treatment. Different process tanks require maintaining appropriate solution temperatures during operation, and water needs to be replenished based on solution consumption and workpiece carry-over. For pre-treatment production lines located in centralized steam supply areas, external steam can usually be used as a heat source to heat the pre-treatment process tanks.

[0025] In existing pretreatment processes for coating, when external steam is used to heat the process tanks, there are problems such as low steam energy utilization and insufficient heating stability of each process tank. At the same time, each process tank consumes a large amount of water resources, resulting in low economic benefits.

[0026] Therefore, this application provides a heating and water replenishment method and related equipment for a pre-coating process tank in a centralized steam supply area. External steam is used to form circulating warm water for heat exchange in each process tank, while steam condensate that meets water quality standards is used to replenish water in the first type of process tank, thereby improving the energy utilization rate of steam and the water resource utilization rate.

[0027] This application provides a heating and water replenishment method for a pre-coating treatment tank in a centralized steam supply area, relating to the field of information technology. This method can be applied to a terminal, a server, or software running on either a terminal or a server. In some embodiments, the terminal can be a smartphone, tablet, laptop, desktop computer, smart speaker, smartwatch, or vehicle terminal, but is not limited to these. The server can be configured as an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms. The server can also be a node server in a blockchain network. The software can be an application implementing a heating and water replenishment method for a pre-coating treatment tank in a centralized steam supply area, but is not limited to the above forms.

[0028] This application can be used in a wide variety of general-purpose or special-purpose computer system environments or configurations. Examples include: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, and distributed computing environments including any of the above systems or devices. This application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform specific tasks or implement specific abstract data types. This application can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In distributed computing environments, program modules can reside in local and remote computer storage media, including storage devices.

[0029] Figure 1 This is an optional flowchart of a heating and water replenishment method for a pre-painting treatment tank in a centralized steam supply area, as provided in an embodiment of this application. Figure 1 The method may include, but is not limited to, steps S101 to S104.

[0030] S101. The external steam supplied by the centralized steam supply area is exchanged with the intermediate circulating water of the circulating warm water system through the first heat exchange unit to obtain circulating warm water and steam condensate. In some embodiments, the first heat exchange unit is a steam-water plate heat exchanger, through which external steam supplied by the centralized steam supply area exchanges heat with the intermediate circulating water of the circulating hot water system, including: S1011. Regulate the pressure and flow rate of external steam; S1012. The adjusted external steam is introduced into the primary side of the steam-water plate heat exchanger, so that the intermediate circulating water absorbs heat on the secondary side of the steam-water plate heat exchanger to form circulating warm water. S1013. Collect the steam condensate formed during the heat exchange process of external steam.

[0031] Specifically, refer to Figure 2 In this embodiment, the external steam supplied by the centralized steam supply area first enters the first heat exchange unit, which can be selected as a steam-water plate heat exchanger. Before entering the steam-water plate heat exchanger, the external steam undergoes pressure and flow regulation to a predetermined value (e.g., Figure 2 As shown, the initial steam pressure is 1.0 MPa and the temperature is 180°C, which needs to be adjusted to maintain it within a suitable range for heat exchange. The adjusted external steam releases heat on the primary side of the steam-water plate heat exchanger, while the intermediate circulating water in the circulating warm water system absorbs heat on the secondary side of the steam-water plate heat exchanger, thus forming circulating warm water that can be used for heating subsequent process tanks. At the same time, the external steam condenses after releasing heat to form steam condensate, which will be collected to provide a water source for subsequent steps.

[0032] Pre-treatment processes for coating typically require continuous heating of multiple process tanks to maintain the liquid level within a suitable temperature range. Existing technologies usually introduce steam directly into the heating equipment corresponding to each process tank. This requires numerous steam pipelines and control components and is highly susceptible to fluctuations in steam pressure and temperature, leading to unstable heating. Therefore, this embodiment first transfers the heat from external steam to a circulating warm water system via a steam-water plate heat exchanger, converting the steam into a more stable and easily adjustable intermediate heat medium, circulating warm water, which then undertakes the subsequent heating function. This reduces the direct impact of steam parameter fluctuations on the subsequent heating process.

[0033] It can be recognized that this embodiment forms a relatively stable circulating warm water heat source by transferring the heat of external steam to circulating warm water, while obtaining steam condensate that can be used for subsequent treatment, thereby improving the energy utilization rate of steam and the water resource utilization rate.

[0034] S102. The circulating warm water is delivered to the main warm water supply pipe, and the circulating warm water is delivered to the second heat exchange unit corresponding to each process tank through the main warm water supply pipe, so that the circulating warm water exchanges heat with the tank liquid in each process tank. In some embodiments, the second heat exchange unit is a plate heat exchanger, which delivers circulating warm water to the main warm water supply pipe, and then delivers the circulating warm water to the second heat exchange unit corresponding to each process tank through the main warm water supply pipe, so that the circulating warm water exchanges heat with the tank liquid in each process tank, including: S1021. The circulating warm water of the circulating warm water system is transported to the main warm water supply pipe through the circulating pump set; S1022. Several warm water supply branch pipes are led out from the main warm water supply pipe. The circulating warm water is transported to the primary side inlet of the plate heat exchanger corresponding to each process tank through each warm water supply branch pipe, so that the circulating warm water and the tank liquid in each process tank can exchange heat independently.

[0035] In some embodiments, the heating and water replenishment method further includes: The circulating warm water discharged from the primary side return port of each plate heat exchanger is respectively delivered to the corresponding warm water return branch pipe. S1023. Merge the circulating warm water in each warm water return branch pipe into the warm water supply main pipe; S1024. By collecting the inlet and return water temperatures of the second heat exchange unit, the water supply flow rate of the main warm water supply pipe is adjusted based on the inlet and return water temperatures.

[0036] Specifically, in this embodiment, the circulating warm water generated by the circulating warm water system is transported to the main warm water supply pipe through a circulating pump group. From there, several branch pipes are led out of the main pipe and transported to the second heat exchange unit of each process tank. The second heat exchange unit can be configured as an independent plate heat exchanger. After the circulating warm water enters the primary side of each plate heat exchanger, it exchanges heat with the tank liquid in the corresponding process tank via the other side of the plate heat exchanger, thereby heating the tank liquid in each process tank. However, since the temperature requirements, heat load, and operating status of the tank liquid in different process tanks may differ in the pre-coating treatment process, if a series heat exchange method is used, the heat exchange situation of the previous process tank will affect the inlet water temperature of the next process tank, easily causing the heating states of each process tank to interfere with each other. Therefore, in this embodiment, the plate heat exchangers corresponding to each process tank are independently configured, that is, each plate heat exchanger draws water from the main warm water supply pipe through its own branch pipe, instead of having the circulating warm water flow sequentially through multiple plate heat exchangers corresponding to multiple process tanks. After heat exchange, the circulating warm water is discharged from the primary side return port of each plate heat exchanger and flows into the main warm water supply pipe through the corresponding warm water return branch pipe, thus continuing to participate in the circulation flow. At the same time, this embodiment also collects the inlet and return water temperatures of the second heat exchange unit, and adjusts the water supply flow rate of the main warm water supply pipe according to the inlet and return water temperatures through the regulating valve.

[0037] It can be recognized that this embodiment adopts a parallel water supply method with a main warm water supply pipe and multiple branch warm water supply pipes, so that the tank liquid in each process tank can exchange heat independently with the circulating warm water, which helps to reduce heat interference between different process tanks. By adjusting the flow rate of the main warm water supply pipe, it is beneficial to reduce heat interference between different process tanks and ensure that the flow rate of circulating warm water supplied by the main warm water supply pipe to each plate heat exchanger is kept within a suitable range for heat exchange, effectively improving the stability and adjustability of the heating process of multiple process tanks.

[0038] S103. Conduct water quality testing on the steam condensate and replenish water to each Class I process tank using steam condensate that meets the preset water quality standards. Each process tank includes several first-type process tanks and several second-type process tanks. The first-type process tanks are one of the following: water washing tank, degreasing tank, and pre-water washing tank.

[0039] In some embodiments, the water quality of the steam condensate is tested, and the steam condensate that meets the preset water quality standards is used to replenish the water in each of the first-type process tanks, including: S1031. The water quality of steam condensate is tested by the online safety monitoring unit, and steam condensate that meets the preset water quality standards is temporarily stored in the heat-insulating buffer storage tank. S1032. Based on the water replenishment requirements of each Class I process tank, the steam condensate in the heat-insulating buffer storage water tank is transported to each Class I process tank for water replenishment.

[0040] In some embodiments, steam condensate from the thermal insulation buffer storage tank is delivered to each of the first-type process tanks for water replenishment according to their water replenishment needs, including: S10321. Transport the steam condensate in the thermal buffer storage tank to the condensate distribution main pipe; S10322. Steam condensate is delivered to each of the first-class process tanks through the condensate distribution main; S10323. Adjust the flow rate of steam condensate delivered from the condensate distribution main to each of the first-class process tanks according to the water replenishment requirements of each first-class process tank.

[0041] In some embodiments, the second type of process tank is a pure water washing tank or a zirconium annealing tank, and the heating and water replenishment method further includes: S201. Replenish the pure water washing tank and zirconium treatment tank with pure water.

[0042] Specifically, in this embodiment, after the steam condensate is formed, it is not directly used as process makeup water. Instead, it is first tested for water quality by an online safety monitoring unit. The online safety monitoring unit can detect water quality parameters such as conductivity and pH of the steam condensate to determine whether the steam condensate meets the preset water quality standards. Steam condensate that meets the preset water quality standards is temporarily stored in an insulated buffer storage tank, and then, according to the makeup water requirements of each first-type process tank, it is distributed to the corresponding first-type process tanks through the condensate distribution main pipe.

[0043] In this embodiment, the first type of process tank can be a washing tank, a degreasing tank, or a pre-washing tank. (Refer to...) Figure 2 and Figure 3 , Figure 3 The pre-wash tank, degreasing tank, second wash tank, and first wash tank are Class I process tanks that require water replenishment. These tanks have relatively low requirements for the quality of their replenishment water, only needing to meet industrial water standards. Therefore, steam condensate that meets these standards can be used for replenishment. When the condensate distribution main supplies water to each Class I process tank, the flow rate of steam condensate delivered to each tank can be adjusted according to the liquid level, water consumption, and process operation requirements of each tank.

[0044] For the second type of process tank, pure water is used for replenishment. (Refer to...) Figure 3 , Figure 3 The first and second pure water washing tanks and the third to fifth water washing tanks are pure water washing tanks. Both the pure water washing tanks and the zirconification tank belong to the second type of process tanks. This type of process tank has high requirements for the stability of the makeup water quality. Therefore, in this embodiment, they are set up separately from the first type of process tanks to avoid using steam condensate indiscriminately for all process tanks. However, in actual implementation, it has been found that the current monitoring results of the condensate water quality show that the condensate water quality in this embodiment is basically equivalent to pure water, which meets the water requirements of the zirconification tank and other process tanks. In fact, it can also be used to make up water for the second type of process tanks.

[0045] It can be recognized that this embodiment can reuse steam condensate that meets water quality standards in some process tanks while ensuring the water replenishment requirements of different process tanks, and use pure water to replenish process tanks with high water quality requirements or those that need to be supplied with water separately, thus effectively improving the utilization rate of steam condensate.

[0046] Please see Figure 5 This application embodiment also provides a heating and water replenishment device for a pre-coating treatment tank in a centralized steam supply area, which can achieve the above-mentioned method. The device includes: The first heat exchange module is used to exchange heat between the external steam provided by the centralized steam supply area and the intermediate circulating water of the circulating warm water system through the first heat exchange unit, so as to obtain circulating warm water and steam condensate. The second heat exchange module is used to transport circulating warm water to the main warm water supply pipe, and then transport the circulating warm water to the second heat exchange unit corresponding to each process tank through the main warm water supply pipe, so that the circulating warm water can exchange heat with the tank liquid in each process tank. The water replenishment module is used to test the water quality of the steam condensate and replenish each Class I process tank with steam condensate that meets the preset water quality standards. Each process tank includes several first-type process tanks and several second-type process tanks. The first-type process tanks are one of the following: water washing tank, degreasing tank, and pre-water washing tank.

[0047] It is understood that the content of the above method embodiments is applicable to the present device embodiments. The specific functions implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0048] This application also provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above-described method. This electronic device can be any smart terminal, including tablet computers, in-vehicle computers, etc.

[0049] It is understood that the content of the above method embodiments is applicable to this device embodiment. The specific functions implemented by this device embodiment are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0050] Please see Figure 3 , Figure 3 The hardware structure of an electronic device according to another embodiment is illustrated. The electronic device includes: The processor 901 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application. The memory 902 can be implemented as a read-only memory (ROM), static storage device, dynamic storage device, or random access memory (RAM). The memory 902 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 902 and is called and executed by the processor 901 using the methods described in the embodiments of this application. The input / output interface 903 is used to implement information input and output; The communication interface 904 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.). Bus 905 transmits information between various components of the device (e.g., processor 901, memory 902, input / output interface 903, and communication interface 904); The processor 901, memory 902, input / output interface 903, and communication interface 904 are connected to each other within the device via bus 905.

[0051] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method.

[0052] It is understood that the content of the above method embodiments is applicable to this storage medium embodiment. The specific functions implemented in this storage medium embodiment are the same as those in the above method embodiments, and the beneficial effects achieved are also the same as those achieved in the above method embodiments.

[0053] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0054] It is understood that the content of the above method embodiments is applicable to the embodiments of this program product. The specific functions implemented by the embodiments of this program product are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0055] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0056] This application provides a heating and water replenishment method and related equipment for a pre-coating treatment tank in a centralized steam supply area. The method involves using a first heat exchange unit to exchange heat between external steam and the intermediate circulating water in a circulating warm water system, resulting in circulating warm water and steam condensate. This transfers the heat from the external steam to the circulating warm water, facilitating subsequent unified heating of multiple process tanks and reducing heating fluctuations caused by direct external steam involvement in heating each tank. The circulating warm water is then distributed to various tanks via a main warm water supply pipe. The second heat exchange unit corresponding to each process tank allows the circulating warm water to exchange heat with the tank liquid in each process tank, thereby using the circulating warm water to independently heat multiple process tanks and improving the stability of the heating effect. By testing the water quality of the steam condensate and using the steam condensate that meets the preset water quality standards to replenish the first type of process tank, the steam condensate can be reused under the premise of meeting the replenishment requirements, which improves the water resource utilization rate. At the same time, since the temperature of the condensate is relatively high, using the condensate for replenishment can effectively reduce the heating pressure on the process tank, thereby further improving the energy utilization rate of steam.

[0057] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0058] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0059] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0060] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0061] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0062] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0063] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0064] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0065] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0066] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0067] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A method for heating and water replenishment of a pre-coating treatment tank in a centralized steam supply area, characterized in that, include: The external steam supplied by the centralized steam supply area is exchanged with the intermediate circulating water of the circulating warm water system through the first heat exchange unit to obtain circulating warm water and steam condensate. The circulating warm water is transported to the main warm water supply pipe, and then the circulating warm water is transported to the second heat exchange unit corresponding to each process tank through the main warm water supply pipe, so that the circulating warm water exchanges heat with the tank liquid in each process tank. The steam condensate is subjected to water quality testing, and the steam condensate that meets the preset water quality standards is used to replenish water to each of the first-type process tanks; The process tanks include several first-type process tanks and several second-type process tanks. The first-type process tanks are one of a water washing tank, a degreasing tank, and a pre-water washing tank.

2. The heating and water replenishment method for a pre-coating treatment tank in a centralized steam supply area according to claim 1, characterized in that, The first heat exchange unit is a steam-water plate heat exchanger. The process of exchanging heat between external steam supplied from the centralized steam supply area and intermediate circulating water in the circulating hot water system through the first heat exchange unit includes: The pressure and flow rate of the external steam are regulated; The adjusted external steam is introduced into the primary side of the steam-water plate heat exchanger, so that the intermediate circulating water absorbs heat on the secondary side of the steam-water plate heat exchanger to form the circulating warm water; Collect the steam condensate formed during the heat exchange process of the external steam.

3. The heating and water replenishment method for a pre-coating treatment tank in a centralized steam supply area according to claim 1, characterized in that, The second heat exchange unit is a plate heat exchanger. The step of supplying the circulating warm water to the main warm water supply pipe, and then distributing the circulating warm water through the main pipe to the second heat exchange unit corresponding to each process tank, allows the circulating warm water to exchange heat with the liquid in each process tank, including: The circulating warm water of the circulating warm water system is transported to the main warm water supply pipe by the circulating pump set; Several warm water supply branch pipes are led out from the main warm water supply pipe, and the circulating warm water is transported to the primary side inlet of the plate heat exchanger corresponding to each of the process tanks through each warm water supply branch pipe, so that the circulating warm water and the tank liquid in each process tank can exchange heat independently.

4. The heating and water replenishment method for a pre-coating treatment tank in a centralized steam supply area according to claim 3, characterized in that, The heating and water replenishment method also includes: The circulating warm water discharged from the primary side return port of each of the plate heat exchangers is respectively delivered to the corresponding warm water return branch pipe. The circulating warm water in each of the warm water return branch pipes is drawn into the warm water supply main pipe; By collecting the inlet and return water temperatures of the second heat exchange unit, the water supply flow rate of the main warm water supply pipe is adjusted based on the inlet and return water temperatures.

5. The heating and water replenishment method for a pre-coating treatment tank in a centralized steam supply area according to claim 1, characterized in that, The step of testing the water quality of the steam condensate and replenishing each of the first-type process tanks with water that meets the preset water quality standards includes: The steam condensate is tested for water quality by an online safety monitoring unit, and the steam condensate that meets the preset water quality standards is transported to an insulated buffer storage tank for temporary storage. According to the water replenishment requirements of each of the first type of process tanks, the steam condensate in the heat-insulating buffer storage water tank is transported to each of the first type of process tanks for water replenishment.

6. The heating and water replenishment method for a pre-coating treatment tank in a centralized steam supply area according to claim 5, characterized in that, The step of supplying the steam condensate from the insulated buffer storage tank to each of the first-type process tanks for water replenishment according to their respective water replenishment needs includes: The steam condensate in the insulated buffer storage tank is transported to the condensate distribution main pipe; The steam condensate is transported to each of the first type of process tanks through the condensate distribution main pipe; According to the water replenishment requirements of each of the first type of process tanks, the flow rate of the steam condensate delivered from the condensate distribution main to each of the first type of process tanks is adjusted.

7. The heating and water replenishment method for a pre-coating treatment tank in a centralized steam supply area according to claim 1, characterized in that, The second type of process tank is a pure water washing tank or a zirconium treatment tank, and the heating and water replenishment method further includes: The pure water washing tank and the zirconium treatment tank are replenished with pure water.

8. A heating and water replenishment device for a pre-coating treatment tank in a centralized steam supply area, characterized in that, The device includes: The first heat exchange module is used to exchange heat between the external steam provided by the centralized steam supply area and the intermediate circulating water of the circulating warm water system through the first heat exchange unit, so as to obtain circulating warm water and steam condensate. The second heat exchange module is used to transport the circulating warm water to the warm water supply main pipe, and through the warm water supply main pipe, the circulating warm water is transported to the second heat exchange unit corresponding to each process tank, so that the circulating warm water exchanges heat with the tank liquid in each process tank. The water replenishment module is used to perform water quality testing on the steam condensate and replenish water to each of the first-type process tanks using the steam condensate that meets the preset water quality standards. The process tanks include several first-type process tanks and several second-type process tanks. The first-type process tanks are one of a water washing tank, a degreasing tank, and a pre-water washing tank.

9. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method according to any one of claims 1 to 7.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1 to 7.

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