Power converter applied to underwater scene

Abstract

The utility model provides a power converter applied to an underwater scene. The power converter comprises a shell, a power input connector and a power output connector. The shell and the power input connector are sealed through a sealing structure. The power output connector and the shell are sealed through a sealing structure. Interlayers are formed in the connecting position of the shell and the power input connector and the connecting position of the shell and the power output connector. The sealing structure comprises a water retaining strip arranged on the outer side of the power input connector and a water retaining strip arranged on the outer side of the power output connector. The water retaining strip is arranged in the interlayer of the double-layer shell, and the space between the double-layer shell and the water retaining strip is encapsulated by the sealant, so that the water retaining strip and the shell on the two sides of the water retaining strip form a bridging structure, and the sealing performance between the water retaining strip and the shell with the interlayer can be well improved by means of sealant encapsulation; therefore, the waterproof performance of the shell is improved, and the service life of the power converter applied to underwater scenes is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater power converters, in particular to a power converter applied to underwater scenes. Background Art

[0002] Underwater power converters are used to convert power for underwater electrical appliances, such as water pumps working in wells. The voltage required by underwater electrical appliances is usually lower than the voltage of municipal power supply. Therefore, a power converter is needed to adjust the voltage applied to the underwater electrical appliances.

[0003] Current power converters used underwater use sealed housings to achieve waterproofing, and generally, sealing auxiliary parts such as sealing gaskets are used at the interfaces of the sealed housings.

[0004] However, a power converter working underwater needs to be used in an underwater environment for a long time. As the use time increases, a power converter with insufficient waterproof performance cannot be used for a long time underwater. Therefore, the technical solution of the present application is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a power converter for underwater scenes, so as to solve the problem of general sealing performance of the shell of the underwater power converter proposed in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A power converter used in underwater scenes, comprising a housing, a power input connector, and a power output connector; the housing and the power input connector are sealed by a sealing structure; the power output connector and the housing are sealed by a sealing structure;

[0008] An interlayer is formed at the connection position between the shell and the power input connector and at the connection position between the shell and the power output connector; the sealing structure comprises: a water retaining strip arranged on the outside of the power input connector and a water retaining strip arranged on the outside of the power output connector; the water retaining strip is placed in the interlayer of the shell, and a sealant is used to seal between the shell and the water retaining strip;

[0009] The diameter of the water retaining bar is larger than the outer diameter of the power output connector and larger than the outer diameter of the power input connector.

[0010] Optionally, the outer shell is a double-layer shell structure; the interlayer is formed between the outer shells, and the interlayer of the outer shell is sealed with sealant.

[0011] Optionally, a first sealing gasket is provided between the power input connector and the outer side wall of the shell, and the first sealing gasket is used to seal the gap between the power input connector and the outer side wall of the shell.

[0012] Optionally, a second sealing gasket is provided between the power output connector and the outer side wall of the housing, and the second sealing gasket is used to seal the gap between the power output connector and the outer side wall of the housing.

[0013] Optionally, a power converter is provided in the housing; the input end of the power converter is connected to the power input connector, the output end of the power converter is connected to the power output connector, and the power converter is used to convert the external AC220V power input into DC24V.

[0014] Optionally, the power output connector is used to supply power to an underwater working water pump.

[0015] Optionally, the underwater working water pump is a water pump equipped with a brushless DC motor.

[0016] Optionally, the shell is made of metal; the water retaining strip is made of rubber.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The present application provides a power converter for underwater scenes, comprising a shell, a power input connector, and a power output connector; a sealing structure is used to seal the shell and the power input connector; a sealing structure is used to seal the power output connector and the shell; an interlayer is formed at the connection position between the shell and the power input connector and at the connection position with the power output connector; the sealing structure comprises: a water retaining strip arranged on the outside of the power input connector and a water retaining strip arranged on the outside of the power output connector; the water retaining strip is placed in the interlayer of the shell, and a sealant is used to seal between the shell and the water retaining strip, so that the water retaining strip and the shell on both sides form a bridge structure, and the sealing performance between the water retaining strip and the shell with the interlayer can be well improved by means of glue sealing, thereby improving the waterproofness of the shell and extending the service life of the power converter for underwater scenes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the overall structure of a power converter used in underwater scenarios.

[0020] Figure 2 A schematic diagram of the internal structure of a power converter used in underwater scenarios.

[0021] Figure 3 The figure is a schematic diagram of a top view structure of a power converter used in underwater scenarios.

[0022] Figure 4 for Figure 2 Schematic diagram of the side structure.

[0023] In the figure: 1. housing, 2. power input connector, 3. power output connector; 4. interlayer; 5. water retaining strip; 6. sealing glue potting; 7. first sealing gasket, 8. second sealing gasket. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0026] See also Figures 1 to 4 In an embodiment of the utility model, a power converter used in underwater scenes includes a shell 1, a power input connector 2, and a power output connector 3; a sealing structure is used to seal the shell 1 and the power input connector 2; a sealing structure is used to seal the power output connector 3 and the shell 1; an interlayer 4 is formed at the connection position between the shell 1 and the power input connector 2 and at the connection position with the power output connector 3; the sealing structure includes: a water retaining bar 5 arranged on the outside of the power input connector 2 and a water retaining bar 5 arranged on the outside of the power output connector 3; the water retaining bar 5 is placed in the interlayer 4 of the shell 1, and a sealant is used to seal 6 between the shell 1 and the water retaining bar 5; the diameter of the water retaining bar 5 is larger than the outer diameter of the power output connector 3 and larger than the outer diameter of the power input connector 2.

[0027] In this embodiment, the power input connector 2 provided in the present application can be connected to an external power supply, and the external power supply can be 220V AC. A power converter is arranged in the housing 1, and the power converter is composed of a rectifier and a transformer. The rectifier transformer is a power transformer of the rectifier device. The characteristic of the rectifier device is that the primary side inputs current, and the secondary side outputs DC after passing through the rectifier element. Current conversion is a general term for the three working modes of rectification, reverse current and frequency conversion, and rectification is the most widely used one. The transformer used as the power supply of the rectifier device is called a rectifier transformer. Most of the rectifier DC power supplies used in industry are obtained from the AC power grid through a rectifier transformer and a rectifier device. This means belongs to the conventional technical means in this field, and the present application does not make improvements to the connection between the rectifier and the transformer and the related working principles.

[0028] In this embodiment, the material of the above-mentioned shell 1 can be stainless steel, and the above-mentioned shell 1 can be formed into a relatively closed whole by welding. In the preparation process, the power input connector 2, the power output connector 3 and the power converter are first installed, and then the interlayer 4 of the shell 1 is sealed by a sealant potting 6 process. Finally, the shell 1 is welded into a whole to complete the assembly of the underwater control power converter. After that, the power output connector 3 is connected to the underwater water pump.

[0029] In this embodiment, in order to reduce line loss, the power converter and the water pump are connected by a short line. The power converter is in an underwater working state for a long time. Therefore, it is necessary to strengthen the sealing performance of the housing 1 of the power converter. Specifically, the present application sets a bridge structure, sets a water retaining bar 5 on the outer wall of the power input connector 2, and sets a water retaining bar 5 on the outer wall of the power output connector 3. The water retaining bar 5 is coaxially arranged with the power input connector 2, and similarly, the water retaining bar 5 is coaxially arranged with the power output connector 3. See Figure 4 As shown, the water retaining strip 5 is located between the interlayer 4 of the housing 1, and a step is formed between the water retaining strip 5 and the interlayer 4 of the housing 1, and then the gap between the water retaining strip 5 and the interlayer 4 is sealed with sealant 6, forming multiple sealant blocks between the power input connector 2 and the housing 1, and increasing the contact area between the sealant and the power input connector 2, which can greatly improve the waterproof performance. Similarly, the power output connector 3 adopts the same setting, which can also well improve the waterproof performance between the power output connector 3 and the housing 1.

[0030] In this embodiment, the water retaining strip 5 is made of rubber material. The rubber material itself has a certain elasticity, so during the assembly process, the volume of the water retaining strip 5 can be reduced by squeezing the water retaining strip 5 itself, so that the water retaining strip 5 can enter the interlayer 4 of the shell 1.

[0031] In a specific embodiment, Figure 4As shown, the outer shell 1 is a double-layer shell structure; the interlayer 4 is formed between the outer shells 1, and the interlayer 4 of the outer shell 1 is sealed with a sealant 6.

[0032] In this embodiment, the sealant potting 6 is to mechanically or manually pour the liquid compound into the device equipped with electronic components and circuits, and solidify it at room temperature or under heating conditions to become a thermosetting polymer insulating material with excellent performance. There are three main types of common potting glues, namely polyurethane potting glue, silicone potting glue and epoxy resin potting glue. This method belongs to the conventional technical means in this field. The present application aims to protect the positional relationship and connection relationship between the sealing layer formed after the sealant potting 6 and the water retaining strip 5.

[0033] In a specific embodiment, Figure 3 As shown, a first sealing gasket 7 is provided between the power input connector 2 and the outer wall of the housing 1, and the first sealing gasket 7 is used to seal the gap between the power input connector 2 and the outer wall of the housing 1. A second sealing gasket 8 is provided between the power output connector 3 and the outer wall of the housing 1, and the second sealing gasket 8 is used to seal the gap between the power output connector 3 and the outer wall of the housing 1. Such a configuration can prevent water from directly impacting the sealant between the water retaining ring and the interlayer 4, thereby further improving the sealing and waterproof performance of the power converter used in underwater scenes.

[0034] In a specific embodiment, a power converter is provided in the housing 1; the input end of the power converter is connected to the power input connector 2, and the output end of the power converter is connected to the power output connector 3, and the power converter is used to convert the AC220V power input from the outside into DC24V. In this embodiment, the voltage required by the applicant's actual product is DC24V, and this application does not limit the voltage value output by the power converter.

[0035] In a specific implementation, the underwater working water pump is a water pump equipped with a brushless DC motor.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A power converter for underwater use, comprising a housing (1), a power input connector (2), and a power output connector (3); characterized in that: A sealing structure is used to seal the housing (1) and the power input connector (2); a sealing structure is used to seal the power output connector (3) and the housing (1); An interlayer (4) is formed at the connection position between the shell (1) and the power input connector (2) and at the connection position between the shell (1) and the power output connector (3); the sealing structure comprises: a water retaining strip (5) arranged outside the power input connector (2) and a water retaining strip (5) arranged outside the power output connector (3); the water retaining strip (5) is placed in the interlayer (4) of the shell (1), and a sealant (6) is used between the shell (1) and the water retaining strip (5); The diameter of the water retaining bar (5) is larger than the outer diameter of the power output connector (3) and larger than the outer diameter of the power input connector (2).

2. The power converter for underwater use according to claim 1, characterized in that: The outer shell (1) is a double-layer shell structure; the interlayer (4) is formed between the outer shells (1), and a sealant (6) is used to fill the interlayer (4) of the outer shell (1).

3. The power converter for underwater use according to claim 1, characterized in that: A first sealing gasket (7) is provided between the power input connector (2) and the outer wall of the housing (1), and the first sealing gasket (7) is used to seal the gap between the power input connector (2) and the outer wall of the housing (1).

4. The power converter for underwater use according to claim 1, characterized in that: A second sealing gasket (8) is provided between the power output connector (3) and the outer wall of the housing (1), and the second sealing gasket (8) is used to seal the gap between the power output connector (3) and the outer wall of the housing (1).

5. The power converter for underwater use according to claim 1, characterized in that: A power converter is arranged in the housing (1); the input end of the power converter is connected to the power input connector (2), and the output end of the power converter is connected to the power output connector (3); the power converter is used to convert externally input AC220V power into DC24V.

6. The power converter for underwater use according to claim 1, characterized in that: The power output connector (3) is used to supply power to an underwater working water pump.

7. The power converter for underwater use according to claim 6, characterized in that: The underwater working water pump is a water pump equipped with a brushless DC motor.

8. The power converter for underwater use according to claim 1, characterized in that: The material of the outer shell (1) is metal; the material of the water retaining strip (5) is rubber.

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