A steam condensate recovery and utilization system and a battery production line

Abstract

This application belongs to the field of battery production line technology and discloses a steam condensate recovery and utilization system and a battery production line. The steam condensate recovery and utilization system includes a first water tank, a second water tank, and a hot water supply device. The first water tank forms a first receiving cavity and has a first inlet, a second inlet, and an outlet, all connected to the first receiving cavity. The first inlet is used to connect to the steam condensate supply device in the battery production line. The second water tank forms a second receiving cavity and has a third inlet connected to the second receiving cavity. The water inlet of the hot water supply device is connected to the outlet via a circulation pump, and its water outlet is connected to both the first and third inlets. During the process of the circulation pump pumping the steam condensate from the first water tank into the hot water supply device for recycling, some of the water returning from the water outlet will enter the second water tank through the third inlet, effectively preventing the first water tank from overflowing and improving energy utilization.

Description

Technical Field

[0001] This application relates to the field of battery production line technology, specifically to a steam condensate recovery and utilization system and a battery production line. Background Technology

[0002] In battery production line factories, equipment such as coating machines and dehumidifiers rely on purchased steam for heat. In order to improve the factory's energy efficiency and reduce carbon emissions, it is usually necessary to recycle the steam condensate. For example, the heat in the steam condensate is recovered first, and then discharged or recycled again to achieve efficient energy utilization.

[0003] In related technologies, the basic principle of steam condensate recovery and utilization is as follows: First, steam condensate generated after the use of a coating machine or dehumidifier is collected in a hot water tank. Then, a circulating pump transports the collected condensate to the hot water utilization point, providing heat energy for processes such as dehumidifier regeneration heating, dehumidifier post-heating, stirring heat, and air conditioning heating. However, during the process of collecting steam condensate in the hot water tank, the amount of steam condensate generated is difficult to match with the flow rate of the circulating pump in real time. This leads to an unstable liquid level in the hot water tank, which can easily cause flooding and waste of heat.

[0004] This section provides background information related to this application, which is not necessarily prior art. Utility Model Content

[0005] The purpose of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this application is to provide a steam condensate recovery and utilization system and a battery production line, which can avoid flooding during the steam condensate recovery and utilization process, effectively preventing heat waste.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] In a first aspect, this application provides a steam condensate recovery and utilization system for a battery production line, the steam condensate recovery and utilization system comprising:

[0008] The first water tank has a hollow interior forming a first receiving cavity. The first water tank has a first inlet, a second inlet, and an outlet, all of which are connected to the first receiving cavity. The first inlet is used to connect to the steam condensate supply device in the battery production line.

[0009] The second water tank has a hollow interior forming a second receiving cavity, and the second water tank has a third inlet that communicates with the second receiving cavity;

[0010] The hot water equipment includes a water inlet and a water outlet. The water inlet is connected to the water outlet via a circulation pump, and the water outlet is connected to both the first inlet and the third inlet.

[0011] As an optional solution for the steam condensate recovery and utilization system, the steam condensate recovery and utilization system further includes a level gauge, which is installed in the first water tank and used to detect the liquid level in the first receiving cavity in real time.

[0012] As an optional solution for the steam condensate recovery and utilization system, the level gauge is a magnetic float level gauge.

[0013] As an optional solution for the steam condensate recovery system, an electric proportional valve is provided between the water outlet and the third inlet, and the electric proportional valve is communicatively connected to the level gauge.

[0014] As an optional feature of the steam condensate recovery system, the distance between the second water tank and the hot water equipment is less than the distance between the first water tank and the hot water equipment.

[0015] As an optional solution for the steam condensate recovery system, the number of circulation pumps is at least two, and the at least two circulation pumps are connected in parallel between the water outlet and the water inlet.

[0016] As an optional solution for the steam condensate recovery system, both the first inlet and the second inlet are located at the upper end of the first water tank.

[0017] As an optional solution for the steam condensate recovery system, the outlet is located at the lower end of the first water tank.

[0018] Secondly, this application provides a battery production line, including a steam condensate supply device and a steam condensate recovery and utilization system as described in any of the preceding claims, wherein the steam condensate generated by the steam condensate supply device is connected to a first inlet of a first water tank of the steam condensate recovery and utilization system.

[0019] As an optional feature of the battery production line, the steam condensate supply device includes one or both of a dehumidifier and a coating machine.

[0020] The beneficial effects of this application are as follows:

[0021] The steam condensate recovery and utilization system provided in this application includes a first water tank, a second water tank, and a hot water device. The first water tank is hollow, forming a first receiving cavity. The first water tank has a first inlet, a second inlet, and an outlet, all connected to the first receiving cavity. The first inlet is used to connect to a steam condensate supply device in the battery production line. The second water tank is hollow, forming a second receiving cavity. The second water tank has a third inlet connected to the second receiving cavity. The water inlet of the hot water device is connected to the outlet via a circulation pump, and its water outlet is connected to both the first and third inlets. During the process of the circulation pump pumping the steam condensate from the first water tank into the hot water device for recycling, some of the water returning from the water outlet will enter the second water tank through the third inlet, effectively preventing flooding of the first water tank and improving energy utilization.

[0022] In addition, a level gauge is added to the first water tank of the steam condensate recovery system, and an electric proportional valve connected to the level gauge is installed on the pipeline from the hot water equipment back to the second water tank. During the steam condensate recovery process, the level of the first water tank can be stably maintained near the set level value, avoiding flooding or water shortage. This not only effectively avoids heat waste but also ensures the safe operation of the circulation pump.

[0023] The battery production line provided in this application, by applying the aforementioned steam condensate recovery and utilization system, provides strong support for the stable production of the battery production line and the achievement of energy conservation and emission reduction goals. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this application and these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the steam condensate recovery and utilization system provided in the embodiments of this application.

[0026] Figure label:

[0027] 100. First water tank; 101. First inlet; 102. Second inlet; 103. Outlet;

[0028] 200. Second water tank; 201. Third inlet;

[0029] 300. Hot water equipment; 301. Water inlet; 302. Water outlet;

[0030] 400. Circulating pump;

[0031] 500. Level gauge;

[0032] 600. Electric proportional valve. Detailed Implementation

[0033] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0034] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0035] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0036] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0037] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0038] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0039] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0040] This application provides a battery production line, including a steam condensate supply device and a steam condensate recovery and utilization system. The steam condensate generated by the steam condensate supply device can be utilized through the steam condensate recovery and utilization system, which can improve the energy utilization rate of the battery production line and achieve the effect of energy saving and emission reduction.

[0041] In one embodiment, the steam condensate supply device includes one or both of a dehumidifier and a coating machine. For example, the steam condensate supply device may include only a dehumidifier or a coating machine, or the steam condensate supply device may include both a dehumidifier and a coating machine.

[0042] It is understandable that the steam condensate supply device may also include a roller press for the electrode manufacturing process, a hot press for the cell assembly process, a steam cleaner for the cleaning process, or a steel shell dryer for the drying process. Any equipment that requires steam or generates steam condensate during operation is acceptable and is not limited here.

[0043] like Figure 1 As shown, this application provides a steam condensate recovery and utilization system, including a first water tank 100, a second water tank 200, and a hot water device 300. The first water tank 100 is hollow to form a first receiving cavity. The first water tank 100 has a first inlet 101, a second inlet 102, and an outlet 103, all of which are connected to the first receiving cavity. The first inlet 101 is used to connect to a steam condensate supply device in a battery production line. The second water tank 200 is hollow to form a second receiving cavity. The second water tank 200 has a third inlet 201 connected to the second receiving cavity. The water inlet 301 of the hot water device 300 is connected to the outlet 103 through a circulation pump 400, and its water outlet 302 is connected to both the first inlet 101 and the third inlet 201. During the process of the circulating pump 400 pumping the steam condensate in the first water tank 100 into the hot water equipment 300 for circulation, part of the water returning from the water outlet 302 will enter the second water tank 200 through the third inlet 201, which can effectively prevent the first water tank 100 from overflowing and improve energy utilization.

[0044] Furthermore, both the first inlet 101 and the second inlet 102 are located at the upper end of the first water tank 100, which prevents water in the first water tank 100 from flowing back from the first inlet 101 to the steam condensate supply device, or from flowing back from the second inlet 102 to the hot water equipment 300. In addition, the outlet 103 is located at the lower end of the first water tank 100, so that the water in the first water tank 100 can flow to the circulation pump 400 under the action of gravity, ensuring that the pipeline where the circulation pump 400 is located is filled with condensate and reducing the occurrence of cavitation.

[0045] In one embodiment, the distance between the second water tank 200 and the hot water device 300 is less than the distance between the first water tank 100 and the hot water device 300, so that the water discharged from the water outlet 302 of the hot water device 300 can preferentially enter the second water tank 200, thereby avoiding the phenomenon of the first water tank 100 overflowing.

[0046] The steam condensate recovery and utilization system also includes a level gauge 500, which is installed in the first water tank 100 and used to monitor the liquid level in the first receiving cavity in real time. This configuration allows for the control of the amount of water flowing back from the water outlet 302 into the second water tank 200 based on the real-time liquid level status monitored by the level gauge 500 in the first receiving cavity, ensuring that the liquid level in the first receiving cavity is maintained within a specific range. In one embodiment, the level gauge 500 is a magnetic float type level gauge, which has advantages such as a large measurement range, clear and intuitive readings, good sealing performance, strong adaptability to working environments, and convenient installation and maintenance.

[0047] Furthermore, an electric proportional valve 600 is provided between the water outlet 302 and the third inlet 201. The electric proportional valve 600 is connected to the level gauge 500. The electric proportional valve 600 will change according to the change of the detection result of the level gauge 500 to ensure that the liquid level of the first water tank 100 is always maintained within a specific range.

[0048] The steam condensate recovery and utilization system also includes a control unit, through which both the electric proportional valve 600 and the level gauge 500 are communicatively connected. The level gauge 500 can detect the liquid level of the first water tank 100 in real time and transmit the detection data to the control unit, providing accurate data for the control unit to control the opening degree of the electric proportional valve 600. The liquid level regulation principle is as follows: the liquid level value is preset in the control unit, and then the valve opening degree of the electric proportional valve 600 is controlled by PID regulation. When the liquid level detected by the level gauge 500 is higher than the set liquid level, the control unit controls the electric proportional valve 600 to gradually increase its opening through a current signal. This increases the amount of water flowing back from the water outlet 302 to the second water tank 200 and decreases the amount of water flowing back from the water outlet 302 to the first water tank 100, thus preventing the first water tank 100 from overflowing. When the liquid level detected by the level gauge 500 is lower than the set liquid level, the control unit controls the electric proportional valve 600 to gradually decrease its opening through a current signal. This decreases the amount of water flowing back from the water outlet 302 to the second water tank 200, allowing more water to enter the first water tank 100. This ensures that the liquid level in the first water tank 100 is always maintained near the set liquid level, preventing damage to the circulation pump 400 due to water shortage in the first water tank 100.

[0049] The number of circulation pumps 400 is at least two, and at least two circulation pumps 400 are connected in parallel between the outlet 103 and the water inlet 301. Each circulation pump 400 serves as a backup for the other, and the failure of any one of them will not affect the use of the other circulation pumps 400, thereby improving the stability of the system.

[0050] The steam condensate recovery and utilization system provided in this application, by adding a level gauge 500 to the first water tank 100 and a second water tank 200, and installing an electric proportional valve 600 connected to the level gauge 500 on the pipeline from the hot water equipment 300 back to the second water tank 200, can ensure that the liquid level of the first water tank 100 is stably maintained near the set liquid level value during the steam condensate recovery and utilization process, avoiding flooding or water shortage. This not only effectively avoids heat waste, but also ensures the safe operation of the circulating pump 400, providing strong support for the stable production of the battery production line and the achievement of energy conservation and emission reduction goals.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A steam condensate water recycling system for a battery production line, characterized by, The steam condensate recovery and utilization system includes: The first water tank (100) has a hollow interior forming a first receiving cavity. The first water tank (100) has a first inlet (101), a second inlet (102) and an outlet (103) that are all connected to the first receiving cavity. The first inlet (101) is used to connect to the steam condensate supply device in the battery production line. The second water tank (200) is hollow to form a second receiving cavity, and the second water tank (200) has a third inlet (201) that communicates with the second receiving cavity; A hot water device (300) includes a water inlet (301) and a water outlet (302). The water inlet (301) is connected to the water outlet (103) via a circulation pump (400), and the water outlet (302) is connected to both the first inlet (101) and the third inlet (201).

2. The steam condensate recovery and utilization system according to claim 1, characterized in that, The steam condensate recovery system also includes a level gauge (500), which is installed in the first water tank (100) and used to detect the liquid level in the first containment cavity in real time.

3. The steam condensate recovery and utilization system according to claim 2, characterized in that, The level gauge (500) is a magnetic float level gauge.

4. The steam condensate recovery and utilization system according to claim 2, characterized in that, An electric proportional valve (600) is provided between the water outlet (302) and the third inlet (201), and the electric proportional valve (600) is communicatively connected to the level gauge (500).

5. The steam condensate recovery and utilization system according to claim 1, characterized in that, The distance between the second water tank (200) and the hot water equipment (300) is less than the distance between the first water tank (100) and the hot water equipment (300).

6. The steam condensate recovery and utilization system according to claim 1, characterized in that, The number of the circulating pumps (400) is at least two, and at least two of the circulating pumps (400) are arranged in parallel between the outlet (103) and the water inlet (301).

7. The steam condensate recovery and utilization system according to any one of claims 1-6, characterized in that, The first inlet (101) and the second inlet (102) are both located at the upper end of the first water tank (100).

8. The steam condensate recovery and utilization system according to claim 7, characterized in that, The outlet (103) is located at the lower end of the first water tank (100).

9. A battery production line, characterized in that, It includes a steam condensate supply device and a steam condensate recovery and utilization system as described in any one of claims 1-8, wherein the steam condensate generated by the steam condensate supply device is connected to the first inlet (101) of the first water tank (100) of the steam condensate recovery and utilization system.

10. The battery production line according to claim 9, characterized in that, The steam condensate supply device includes one or both of a dehumidifier and a coating machine.

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