Negative pressure preservation device and transport equipment

Abstract

The embodiment of the application provides a negative pressure anti-corrosion device and a transportation equipment, the negative pressure anti-corrosion device comprises: a voltage conversion module, the voltage conversion module is configured to convert a positive voltage into a negative voltage; a voltage adjustment controller, the voltage adjustment controller is electrically connected with the voltage conversion module, and is configured to adjust the negative voltage output by the voltage conversion module.The protection effect of the negative pressure anti-corrosion device of the application is better and the applicability is higher.

Description

Technical Field

[0001] This application relates to cathodic corrosion protection devices, and more particularly to a negative pressure corrosion protection device and a transport equipment. Background Technology

[0002] Magnesium alloys are widely used in automotive lightweighting due to their low density, high specific strength, good shock absorption performance, and excellent electromagnetic shielding capabilities. However, magnesium alloys are highly susceptible to electrochemical corrosion in humid, salt spray, or acidic environments, leading to a sharp drop in structural strength. Existing technologies utilize negative pressure corrosion protection devices to provide a negative voltage to the magnesium alloy, creating a cathodic protection environment to inhibit corrosion. These devices consist of a voltage stabilizing module and a reverse circuit module. Their working principle is as follows: when the vehicle's power supply is activated, the voltage stabilizing module stabilizes the voltage and then converts it into a negative voltage via the reverse circuit, outputting it to the magnesium alloy surface to establish a negative electric field and slow down the corrosion reaction.

[0003] However, existing negative pressure corrosion protection devices have the following limitations: First, they use voltage regulators with fixed output voltages, making it impossible to adjust the negative pressure value according to the type of magnesium alloy, thus failing to achieve optimal protection. Second, the negative pressure value is usually fixed in the hardware circuitry, requiring the replacement of different models of voltage regulators or reverse circuit modules to adapt to different needs, thereby limiting the applicability of negative pressure corrosion protection devices. Utility Model Content

[0004] This application provides a negative pressure corrosion protection device and a transportation equipment to address the shortcomings of related technologies.

[0005] In a first aspect, this application provides a negative pressure corrosion protection device, comprising:

[0006] A voltage conversion module, configured to convert positive voltage to negative voltage;

[0007] A voltage regulator controller is electrically connected to the voltage conversion module and is configured to regulate the negative voltage output by the voltage conversion module.

[0008] In one possible implementation, the negative pressure corrosion protection device further includes a potential monitoring module, which is electrically connected to a voltage regulator and configured to acquire the potential of the surface of the metal part to be protected.

[0009] In one possible implementation, the negative pressure corrosion protection device also includes a backup power supply, which is electrically connected to the voltage conversion module.

[0010] In one possible implementation, the negative pressure corrosion protection device further includes a power management module, the input of which is electrically connected to the backup power supply and the main power supply respectively, and the output of which is electrically connected to the voltage conversion module.

[0011] In one possible implementation, the voltage conversion module includes a positive voltage stabilizer, an inverting circuit, and a negative voltage stabilizer. The output of the positive voltage stabilizer is electrically connected to the input of the inverting circuit, the output of the inverting circuit is electrically connected to the input of the voltage regulator, the output of the voltage regulator is electrically connected to the input of the negative voltage stabilizer, and the output of the negative voltage stabilizer is configured to be electrically connected to the metal part to be protected.

[0012] In one possible implementation, the negative pressure corrosion protection device also includes a housing, a connecting assembly, and a locking assembly, with the voltage conversion module and voltage regulation controller both located inside the housing.

[0013] The connecting assembly is attached to the outside of the housing and is configured to connect to the metal part to be protected;

[0014] The locking assembly is movably connected to the housing to lock the connection assembly onto the metal part to be protected.

[0015] In one possible implementation, the locking assembly includes a first connector and a locking member, one end of the first connector extending in the direction of extension is slidably connected to the housing, and the other end of the first connector extending in the direction of extension is connected to the locking member.

[0016] The first connector is configured to either engage the locking element with the connecting assembly or disengage the locking element from the connecting assembly.

[0017] In one possible implementation, the connecting component is connected to one end of the housing in the height direction, the housing has a guide groove that extends along the height direction of the housing, and the first connecting member is slidably connected to the guide groove.

[0018] The locking assembly also includes an elastic element, which is disposed in the guide groove. The two ends of the elastic element in the direction of elastic force are connected to the housing and the first connector, respectively, and are configured to drive the first connector to move toward the connecting assembly.

[0019] In one possible implementation, the connecting assembly includes a second connector and a threaded connector, the second connector being connected to the housing, one end of the threaded connector being connected to the second connector, and the other end of the threaded connector being configured to be connected to the metal part to be protected.

[0020] Secondly, this application provides a transportation device, comprising:

[0021] The negative pressure corrosion protection device provided in the first aspect above;

[0022] The equipment body includes the metal parts to be protected, and the negative pressure anti-corrosion device is connected to the metal parts to be protected.

[0023] The negative pressure corrosion protection device and transport equipment of this application embodiment include a voltage conversion module and a voltage regulator controller. The voltage conversion module converts the positive voltage of the power supply into a negative voltage output to form a cathodic protection environment on the surface of the metal part to be protected, thereby inhibiting corrosion and extending the service life of the metal part. By setting the voltage regulator controller to adjust the negative voltage output by the voltage conversion module, the same negative pressure corrosion protection device can output different values ​​of negative voltage without replacing the voltage conversion module. This allows the negative pressure corrosion protection device to be applied to different types of metal parts to be protected, or to adjust the negative voltage output by the voltage conversion module according to different environments or different corrosion rates, thereby improving the protective effect and applicability of the negative pressure corrosion protection device.

[0024] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the negative pressure anti-corrosion device and transportation equipment provided by this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the negative pressure corrosion protection device provided in the embodiments of this application;

[0027] Figure 2 Another structural schematic diagram of the negative pressure anti-corrosion device provided in the embodiments of this application;

[0028] Figure 3 A schematic diagram illustrating the working principle of the negative pressure corrosion protection device provided in the embodiments of this application;

[0029] Figure 4 Another structural schematic diagram of the negative pressure corrosion protection device provided in the embodiments of this application;

[0030] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10-Negative pressure corrosion protection device; 100-Voltage conversion module; 110-Positive voltage stabilizer; 120-Reverse circuit breaker; 130-Negative voltage stabilizer; 200-Voltage regulator controller; 300-Backup power supply; 400-Power management module; 500-Housing; 510-Guide groove; 600-Connecting assembly; 610-Second connecting part; 620-Threaded connecting part; 621-Threaded rod; 622-Nut; 700-Locking assembly; 710-First connecting part; 711-Slider; 720-Locking part; 730-Elastic part; 800-Power cord; 20-Metal part to be protected; 30-Main power supply. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] The terms "first," "second," and "third" (if any) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular 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.

[0037] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or display that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or display.

[0038] The negative pressure corrosion protection device includes a voltage stabilizing module and a reverse circuit module. Its working principle is as follows: when the vehicle is powered, the voltage stabilizing module stabilizes the voltage and then converts it into a negative voltage via the reverse circuit, outputting it to the magnesium alloy surface to establish a negative electric field and slow down the corrosion reaction. However, existing negative pressure corrosion protection devices have the following limitations: First, they use voltage regulators with fixed output voltages, which cannot dynamically adjust the negative pressure value according to environmental humidity, salt spray concentration, or the type of magnesium alloy, resulting in unstable protection effects. Second, the negative pressure value is usually fixed in the hardware circuitry, requiring the replacement of different models of voltage regulators or reverse circuit modules to adapt to different needs, thus limiting the applicability of the negative pressure corrosion protection device.

[0039] In view of the above problems, this application provides a negative pressure corrosion protection device and a transportation device. The output negative pressure value is adjusted in real time by a voltage regulation controller, so that the voltage conversion module outputs a negative voltage range that is adapted to the current requirements, thereby improving the protection effect and applicability of the negative pressure corrosion protection device.

[0040] The following describes in detail, with reference to the accompanying drawings, the specific embodiments of the negative pressure corrosion protection device and transportation equipment provided in this application.

[0041] Reference Figure 1 , Figure 2 and Figure 3 As shown, the negative pressure anti-corrosion device 10 provided in this application embodiment includes a voltage conversion module 100 and a voltage regulation controller 200. The voltage conversion module 100 is configured to convert positive voltage into negative voltage. The voltage regulation controller 200 is electrically connected to the voltage conversion module 100 and is configured to regulate the negative voltage output by the voltage conversion module 100.

[0042] In this application, the voltage conversion module 100 can stably input the voltage of the power supply, convert the positive voltage of the power supply into a negative voltage, and stably output the negative voltage to the metal part 20 to be protected, thereby forming a cathodic protection environment on the surface of the metal part 20 to inhibit the corrosion of the metal part 20 to be protected, thereby improving the service life of the metal part 20 to be protected.

[0043] The metal part 20 to be protected is made of magnesium alloy. Magnesium alloys can be divided into different types according to their chemical composition, such as the AZ series containing aluminum and zinc, the AM series containing aluminum and manganese, the AS series containing aluminum and silicon, and the ZK series containing zinc and zirconium, etc., which will not be described in detail here. Since the metal part 20 to be protected may be made of different types of magnesium alloy, the negative voltage required for its corrosion protection will also be different.

[0044] It should be noted that the negative pressure anti-corrosion device 10 provided in this application embodiment can be used not only for the metal parts 20 to be protected made of magnesium alloy, but also for metal parts 20 to be protected made of steel, aluminum alloy, etc., or for vehicle chassis anti-corrosion.

[0045] The voltage regulator 200 is a control device that can adjust the output voltage value. For example, the input terminal of the voltage regulator 200 can receive the potential value of the surface of the metal part 20 to be protected, and the output terminal of the voltage regulator 200 controls the negative voltage output by the voltage conversion module 100. When the potential value of the surface of the metal to be protected increases, it indicates that the corrosion current density of the surface of the metal to be protected increases and the corrosion rate of the metal part 20 to be protected accelerates. The voltage regulator 200 can appropriately increase the negative voltage output by the voltage conversion module 100 to slow down the corrosion rate of the metal part 20 to be protected.

[0046] In this way, the voltage regulator can adjust the output negative voltage according to the current corrosion rate of the metal part 20 to be protected, so that the output negative voltage is adapted to the current anti-corrosion requirements, thereby improving the anti-corrosion effect of the negative pressure anti-corrosion device 10 and thus improving the protection effect of the metal part 20 to be protected.

[0047] Alternatively, the input terminal of the voltage regulator 200 can receive the humidity value of the environment where the metal part 20 to be protected is located, and the output terminal of the voltage regulator 200 controls the negative voltage output by the voltage conversion module 100. The higher the humidity value of the environment where the metal part 20 to be protected is located, the more severe the corrosion of the metal part 20 to be protected will be. The voltage regulator can appropriately increase the negative voltage output by the voltage conversion module 100.

[0048] In this way, the voltage regulator can adjust the output negative voltage according to the environmental parameters of the metal part 20 to be protected, so that the output negative voltage matches the current environment, thereby improving the anti-corrosion effect of the negative pressure anti-corrosion device 10 and thus improving the protection effect of the metal part 20 to be protected.

[0049] Furthermore, since the negative voltage output by the negative pressure corrosion protection device 10 is adjustable and there is no need to replace different models of voltage conversion modules 100, the same negative pressure corrosion protection device 10 can be applied to different models of metal parts 20 to be protected, thereby broadening the application range of the negative pressure corrosion protection device 10.

[0050] The negative pressure corrosion protection device 10 of this application embodiment includes a voltage conversion module 100 and a voltage regulation controller 200. The voltage conversion module 100 converts the positive voltage of the power supply into a negative voltage output to form a cathodic protection environment on the surface of the metal part 20 to be protected, thereby inhibiting corrosion of the metal part 20 and extending its service life. The voltage regulation controller 200 regulates the negative voltage output by the voltage conversion module 100, allowing the same negative pressure corrosion protection device 10 to output different negative voltage values ​​without replacing the voltage conversion module 100. This makes the negative pressure corrosion protection device 10 suitable for different types of metal parts 20 to be protected, or allows the negative voltage output by the voltage conversion module 100 to be adjusted according to different environments or corrosion rates, thereby improving the protective effect and applicability of the negative pressure corrosion protection device 10.

[0051] In one possible implementation, the negative pressure corrosion protection device 10 further includes a potential monitoring module, which is electrically connected to the voltage regulation controller 200 and configured to collect the potential of the surface of the metal part 20 to be protected.

[0052] The potential monitoring module can be used to collect the potential of the metal surface to be protected. The output of the potential monitoring module is connected to the input of the voltage regulation controller 200 to transmit the potential of the metal surface to the voltage regulation controller 200. In this way, through the real-time feedback of the potential monitoring module, precise negative voltage regulation based on the electrochemical state of the surface of the metal part 20 to be protected is realized.

[0053] The potential detection module may include a potential probe and a signal amplification circuit. The potential probe contacts the surface of the metal part 20 to be protected to obtain the potential signal of the surface of the metal part 20 to be protected, and transmits the potential signal to the signal amplification circuit. After being amplified and processed by the signal amplification circuit, it is transmitted to the voltage regulation controller 200. The voltage regulator then determines whether it is necessary to increase the negative voltage output value of the voltage conversion module 100 based on the potential signal of the surface of the metal part 20 to be protected.

[0054] For example, when the corrosion current density on the surface of the protected metal part increases, the potential monitoring module can immediately detect the potential change and trigger the voltage regulation controller 200 to increase the negative voltage to suppress the corrosion reaction. In this way, the output of the negative voltage can actively adapt to the real-time corrosion requirements of the surface of the metal part 20 to be protected, which significantly improves the initiative and adaptability of the anti-corrosion effect.

[0055] Reference Figure 3 As shown, in one possible implementation, the negative pressure corrosion protection device 10 also includes a backup power supply 300, which is electrically connected to the voltage conversion module 100.

[0056] It should be noted that the negative pressure corrosion protection device 10 of this embodiment can be applied to transportation equipment such as vehicles, ships or airplanes. For example, when the negative pressure corrosion protection device 10 is applied to a vehicle, the vehicle can provide the main power supply 30 to the negative pressure corrosion protection device 10. However, when the vehicle is parked, the main power supply 30 will stop supplying power to the negative pressure corrosion protection device 10 due to the power outage. The negative pressure corrosion protection device 10 of this embodiment is equipped with a backup power supply 300. The backup power supply 300 can supply power to the voltage conversion module 100 when the main power supply 30 fails, thereby enabling the negative pressure corrosion protection device 10 to continuously provide negative voltage to the metal part 20 to be protected, thereby improving the protection effect of the metal part 20 to be protected.

[0057] Reference Figure 3 As shown, in one possible implementation, the negative pressure corrosion protection device 10 further includes a power management module 400. The input terminal of the power management module 400 is electrically connected to the backup power supply 300 and the main power supply 30, respectively, and the output terminal of the power management module 400 is electrically connected to the voltage conversion module 100.

[0058] With this configuration, when the transport equipment is running, the power management module 400 can control the main power supply 30 to supply power to the voltage conversion module 100. When the transport equipment stops running, the power management module 400 can control the backup power supply 300 to supply power to the voltage conversion module 100. This allows the main power supply 30 and the backup power supply 300 to supply power to the voltage conversion module 100 under different conditions, thereby enabling the negative pressure anti-corrosion device 10 to continuously provide negative pressure protection for the metal part 20 to be protected.

[0059] The power management module 400 may include a relay or a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) switch.

[0060] Reference Figure 2 , Figure 3As shown, in some embodiments, the voltage conversion module 100 includes a positive voltage stabilizer 110, an inverter 120, and a negative voltage stabilizer 130. The output terminal of the positive voltage stabilizer 110 is electrically connected to the input terminal of the inverter 120, the output terminal of the inverter 120 is electrically connected to the input terminal of the voltage regulator 200, the output terminal of the voltage regulator 200 is electrically connected to the input terminal of the negative voltage stabilizer 130, and the output terminal of the negative voltage stabilizer 130 is configured to be electrically connected to the metal part 20 to be protected.

[0061] In other words, the positive voltage stabilizer 110, the reverse circuit 120, the voltage regulation controller 200, and the negative voltage stabilizer 130 are connected in series.

[0062] Among them, the positive voltage stabilizer 110 can convert the unstable voltage of the power supply into a stable positive voltage output. The input terminal of the positive voltage stabilizer 110 is electrically connected to the main power supply 30 or the backup power supply 300. The output terminal of the positive voltage stabilizer 110 provides a stable positive voltage input to the inverter 120. For example, the positive voltage stabilizer 110 can be a linear regulator such as LM317.

[0063] The inverter 120 converts a positive voltage to a negative voltage. Its input receives the output of the positive voltage stabilizer 110, and its output provides a negative voltage reference signal to the voltage regulator 200. The voltage regulator 200 can provide an adjustment signal to the negative voltage stabilizer 130 based on factors such as the current ambient humidity and the current surface potential of the metal part 20 to be protected.

[0064] The negative voltage stabilizer 130 can convert an unstable negative voltage into a stable negative voltage output. The input terminal of the negative voltage stabilizer 130 receives the adjustment signal from the voltage regulation controller 200, and the output terminal of the negative voltage stabilizer 130 outputs a corresponding negative voltage. The voltage regulation controller 200 can adjust the rated negative voltage value of the negative voltage stabilizer 130 so that the negative voltage stabilizer 130 outputs a better negative voltage value. For example, the negative voltage stabilizer 130 can use a linear regulator module such as LM350T.

[0065] Reference Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, in one possible implementation, the negative pressure corrosion protection device 10 further includes a housing 500, a connecting assembly 600, and a locking assembly 700. The voltage conversion module 100 and the voltage regulator controller 200 are both located within the housing 500. The connecting assembly 600 is connected to the outside of the housing 500 and is configured to connect to the metal part 20 to be protected. The locking assembly 700 is movably connected to the housing 500 to lock the connecting assembly 600 onto the metal part 20 to be protected.

[0066] It is understandable that when the negative pressure anti-corrosion device 10 is used in a vehicle, the vehicle will be subjected to bumps, which will cause the negative pressure anti-corrosion device 10 to vibrate as well. This will cause the connecting component 600 to move relative to the metal part 20 to be protected, resulting in the separation of the negative pressure anti-corrosion device 10 from the metal part 20 to be protected. The negative pressure anti-corrosion device 10 will then be unable to provide negative pressure protection for the metal part 20 to be protected.

[0067] In this embodiment, the voltage conversion module 100, voltage regulation controller 200, connection component 600 and locking component 700 are all integrated on the housing 500. The housing 500 can be connected to the metal part 20 to be protected through the connection component 600, thereby allowing the negative pressure anti-corrosion device 10 to be installed on the metal part 20 to be protected. The locking component 700 and the connection component 600 have two connection states: locked and unlocked.

[0068] Thus, when the locking component 700 and the connecting component 600 are in the locked state, the locking component 700 is connected to the connecting component 600 and locks the connecting component 600 onto the metal part 20 to be protected, thereby preventing the connecting component 600 from separating from the metal part 20 to be protected, thus improving the practicality of the negative pressure corrosion protection device 10. When the locking component 700 and the connecting component 600 are in the unlocked state, the locking component 700 is disconnected from the connecting component 600, thus facilitating the removal of the negative pressure corrosion protection device 10 from the metal part 20 to be protected, thereby improving the ease of installation and removal of the negative pressure corrosion protection device 10.

[0069] Reference Figure 5 As shown, in some embodiments, the locking assembly 700 includes a first connector 710 and a locking member 720. One end of the first connector 710 extending in the direction of extension is slidably connected to the housing 500, and the other end of the first connector 710 extending in the direction of extension is connected to the locking member 720. The first connector 710 is configured to either connect the locking member 720 to the connecting assembly 600 or disengage the locking member 720 from the connecting assembly 600.

[0070] In this way, when the negative pressure anti-corrosion device 10 is connected to the metal part 20 to be protected, the first connecting member 710 can slide toward the locking member 720, thereby connecting the first connecting member 710 with the locking member 720, thereby locking the connecting assembly 600 onto the metal part 20 to be protected, thereby preventing the connecting assembly 600 from moving relative to the metal part 20 to be protected and becoming loose.

[0071] Alternatively, when it is necessary to remove the negative pressure anti-corrosion device 10 from the metal part 20 to be protected, the hand can drive the first connecting member 710 to slide away from the locking member 720, thereby causing the connecting component 600 to disengage from the locking member 720, thus facilitating the separation of the connecting component 600 from the metal part 20 to be protected.

[0072] Reference Figure 5 As shown, in some embodiments, the connecting assembly 600 is connected to one end of the housing 500 in the height direction. The housing 500 has a guide groove 510 that extends along the height direction of the housing 500. The first connecting member 710 is slidably connected to the guide groove 510. The locking assembly 700 also includes an elastic member 730, which is disposed in the guide groove 510. The two ends of the elastic member 730 in the elastic direction are respectively connected to the housing 500 and the first connecting member 710, and are configured to drive the first connecting member 710 to move toward the connecting assembly 600.

[0073] Thus, during the process of the locking member 720 moving towards the connecting assembly 600 along the height direction of the housing 500, and during the process of the locking member 720 moving away from the connecting assembly 600 along the height direction of the housing 500, the guide groove 510 can ensure that the moving direction of the first connecting member 710 is always consistent and will not deviate, which is conducive to the accurate connection between the locking member 720 and the connecting assembly 600.

[0074] When the negative pressure anti-corrosion device 10 is connected to the metal part 20 to be protected, the hand can first drive the first connecting member 710 to slide a distance away from the locking member 720. When the hand is released, the first connecting member 710 can slide towards the locking member 720 under the elastic force of the elastic member 730, so that the locking member 720 can be engaged with the connecting component 600. During the use of the negative pressure anti-corrosion device 10, the elastic force of the elastic member 730 can make the locking member 720 and the connecting component 600 reliably connected, thereby preventing the connecting component 600 from loosening due to vibration.

[0075] For example, a slider 711 can be provided at one end of the first connector 710 in the extending direction, and the slider 711 is slidably connected to the guide groove 510.

[0076] Reference Figure 5 As shown, in some embodiments, the connection assembly 600 includes a second connector 610 and a threaded connector 620. The second connector 610 is connected to the housing 500, one end of the threaded connector 620 is connected to the second connector 610, and the other end of the threaded connector 620 is configured to connect to the metal part 20 to be protected.

[0077] In this way, the threaded connector 620 can connect the metal part 20 to be protected and the second connector 610. The second connector 610 connects the housing 500 and the threaded connector 620, thereby enabling the negative pressure anti-corrosion device 10 to be connected to the metal part 20 to be protected through the connecting assembly 600.

[0078] The threaded connector 620 may include a threaded rod 621 and a nut 622 connected to each other. The nut 622 is connected to one end of the threaded rod 621. One end of the threaded rod 621 can be threadedly connected to the second connector 610. The other end of the threaded rod 621 is configured to be threadedly connected to the metal part 20 to be protected. The locking member 720 has a locking groove. The shape of the locking groove is matched with the shape of the nut 622. For example, the nut 622 may be pentagonal or hexagonal. The locking member 720 is sleeved on the nut 622. The nut 622 and the locking groove are engaged with each other, thereby preventing the threaded connector 620 from rotating due to vibration, thus preventing the threaded connector 620 from loosening.

[0079] Based on the above embodiments, this application also provides a transportation device, which includes a negative pressure anti-corrosion device 10 and a device body. The device body includes a metal part 20 to be protected, and the negative pressure anti-corrosion device 10 is connected to the metal part 20 to be protected.

[0080] The structure and working principle of the negative pressure corrosion prevention device 10 have been described in detail in the aforementioned embodiments, and will not be repeated here.

[0081] For example, the transportation equipment may include a vehicle, a ship, or an airplane. The transportation equipment may include the equipment body and the negative pressure anti-corrosion device 10. The equipment body may include the metal part 20 to be protected and the main power supply 30. The negative pressure anti-corrosion device 10 is provided with a power line 800. The power line 800 connects the voltage conversion module 100 and the main power supply 30. The main power supply 30 can supply power to the negative pressure anti-corrosion device 10. The negative pressure anti-corrosion device 10 can provide negative pressure protection for the metal part 20 to be protected.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A negative pressure corrosion protection device, characterized in that, include: A voltage conversion module (100) configured to convert a positive voltage to a negative voltage; A voltage regulator (200) is electrically connected to the voltage conversion module (100) and configured to regulate the negative voltage output by the voltage conversion module (100).

2. The negative pressure corrosion protection device according to claim 1, characterized in that, It also includes a potential monitoring module, which is electrically connected to the voltage regulation controller (200) and configured to collect the potential of the surface of the metal part (20) to be protected.

3. The negative pressure corrosion protection device according to claim 1 or 2, characterized in that, It also includes a backup power supply (300), which is electrically connected to the voltage conversion module (100).

4. The negative pressure corrosion protection device according to claim 3, characterized in that, It also includes a power management module (400), the input terminal of which is electrically connected to the backup power supply (300) and the main power supply (30) respectively, and the output terminal of which is electrically connected to the voltage conversion module (100).

5. The negative pressure corrosion protection device according to claim 1 or 2, characterized in that, The voltage conversion module (100) includes a positive voltage stabilizer (110), an inverter (120), and a negative voltage stabilizer (130). The output terminal of the positive voltage stabilizer (110) is electrically connected to the input terminal of the inverter (120). The output terminal of the inverter (120) is electrically connected to the input terminal of the voltage regulator (200). The output terminal of the voltage regulator (200) is electrically connected to the input terminal of the negative voltage stabilizer (130). The output terminal of the negative voltage stabilizer (130) is configured to be electrically connected to the metal part (20) to be protected.

6. The negative pressure corrosion protection device according to claim 1 or 2, characterized in that, It also includes a housing (500), a connecting assembly (600), and a locking assembly (700), wherein the voltage conversion module (100) and the voltage regulation controller (200) are both disposed within the housing (500); The connecting component (600) is connected to the outside of the housing (500) and is configured to connect to the metal part (20) to be protected. The locking component (700) is movably connected to the housing (500) to lock the connecting component (600) onto the metal part (20) to be protected.

7. The negative pressure corrosion protection device according to claim 6, characterized in that, The locking assembly (700) includes a first connector (710) and a locking member (720). One end of the first connector (710) in the extending direction is slidably connected to the housing (500), and the other end of the first connector (710) in the extending direction is connected to the locking member (720). The first connector (710) is configured to connect the locking member (720) to the connecting assembly (600), or to disengage the locking member (720) from the connecting assembly (600).

8. The negative pressure corrosion protection device according to claim 7, characterized in that, The connecting assembly (600) is connected to one end of the housing (500) in the height direction. The housing (500) has a guide groove (510) that extends along the height direction of the housing (500). The first connecting member (710) is slidably connected to the guide groove (510). The locking assembly (700) further includes an elastic element (730), which is disposed in the guide groove (510). The two ends of the elastic element (730) in the elastic direction are respectively connected to the housing (500) and the first connector (710), and are configured to drive the first connector (710) to move toward the connecting assembly (600).

9. The negative pressure corrosion protection device according to claim 6, characterized in that, The connection assembly (600) includes a second connector (610) and a threaded connector (620), the second connector (610) being connected to the housing (500), one end of the threaded connector (620) being connected to the second connector (610), and the other end of the threaded connector (620) being configured to be connected to the metal part (20) to be protected.

10. A transportation device, characterized in that, include: The negative pressure corrosion protection device (10) as described in any one of claims 1-9; The equipment body includes a metal part (20) to be protected, and the negative pressure anti-corrosion device (10) is connected to the metal part (20) to be protected.

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