Sealing structure and layered water taking device

Abstract

The utility model discloses a kind of sealing structure and layered water taking device, sealing structure includes cabin and cover plate, the side of cabin towards the cover plate is provided with annular groove, the cover plate is embedded in the annular groove, the cabin and the cover plate are connected by fastener, the cabin defines installation cavity, electrical assembly is equipped in the installation cavity, first sealing element is clamped between the inner wall of the annular groove and the cover plate, second sealing element is clamped on the opposite large surface of the cabin and the cover plate, the first sealing element and the second sealing element are sequentially annularly arranged outside the electrical assembly and are spaced apart. According to the sealing structure of the application, water vapor can be isolated, and the sealing performance is good.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy equipment technology, and in particular to a sealing structure and a layered water intake device. Background Technology

[0002] With the increasing emphasis on environmental protection by the state, strict requirements have been placed on the water quality and temperature of water diverted downstream in water conservancy and hydropower projects. The use of stratified water intake equipment is now widespread. To achieve greater efficiency and energy saving in stratified water intake, a stratified water intake technology using a gate with an internally driven rotating movable flap gate can be adopted. Each movable flap gate frame is equipped with a double-acting hydraulic cylinder drive, allowing for the rapid and arbitrary opening and closing of any gate section as needed. The hydraulic cylinder is powered by a wireless communication module. Although the wireless communication module is located in the sealed space of each flap gate frame, it is constantly exposed to a humid underwater environment. Its internal electrical components, being precision parts, are inevitably susceptible to corrosion from moisture, easily rusting or corroding, directly causing power supply failure and resulting in gate malfunction. Therefore, the design of the sealing device for the wireless communication module has become one of the core aspects of stratified water intake equipment research. Utility Model Content

[0003] The main purpose of this invention is to provide a sealing structure and a stratified water intake device to solve the problem of poor sealing performance of the sealing structure in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] According to the sealing structure of this application, for installation on the door frame side post of a stratified water intake device, it includes a housing and a cover plate. The housing has an annular groove on the side facing the cover plate, and the cover plate is embedded in the annular groove. The housing and the cover plate are connected by fasteners. The housing defines an installation cavity, and an electrical component is provided in the installation cavity. A first sealing element is sandwiched between the inner wall of the annular groove and the cover plate. A second sealing element is sandwiched on the large surface opposite to the housing and the cover plate. The first sealing element and the second sealing element are sequentially arranged around the electrical component and spaced apart.

[0006] According to the sealing structure of this application, the axial direction of both the housing and the cover plate is arranged along a first direction, and the first sealing element and the second sealing element are arranged sequentially in a second direction, which is perpendicular to the first direction.

[0007] According to the sealing structure of this application, the housing is further provided with a wiring channel communicating with the mounting cavity, and a lead wire electrically connected to the electrical component is provided in the wiring channel, and a sealing filler is filled between the lead wire and the inner wall of the wiring channel.

[0008] According to the sealing structure of this application, a first limiting groove is provided on the side of the housing facing the cover plate, and a second limiting groove is provided on the cover plate. The first limiting groove and the second limiting groove are arranged opposite to each other. The second sealing member is simultaneously embedded in the first limiting groove and the second limiting groove. The second sealing member includes a plurality of trapezoidal sealing protrusions, and the second limiting groove includes a plurality of trapezoidal grooves. The trapezoidal sealing protrusions are embedded in the corresponding trapezoidal grooves.

[0009] Optionally, the inner wall of the mounting cavity forms at least one stepped annular groove that projects onto the plane where the cover plate is located. The orthographic projection of the first limiting groove is fitted outside the orthographic projection of the annular groove, and the electrical component is snapped into any of the annular grooves.

[0010] Optionally, the annular groove is racket-shaped, and the second seal is bonded to the wall of the first limiting groove by a hot vulcanization process.

[0011] Optionally, the second seal has equally spaced and side-by-side sealing teeth on the side facing the cover plate, and the sealing teeth abut against the cover plate.

[0012] Optionally, the cover plate is provided with a racket-shaped boss, the second limiting groove ring is provided with the boss, and the boss is embedded in the mounting cavity.

[0013] According to the sealing structure of this application, the outer shell and the cover plate are both racket-shaped structures; and / or the circumferential sidewall of the cover plate is provided with an annular third limiting groove, the first sealing element is an O-ring, and a portion of the first sealing element is embedded in the third limiting groove.

[0014] The stratified water intake device according to this application includes a door frame side post and the aforementioned sealing structure, wherein the sealing structure is disposed on the door frame side post.

[0015] The technical solution provided by the utility model embodiments has the following advantages compared with the prior art:

[0016] The sealing structure provided in this embodiment of the utility model has an annular groove on the side of the hull facing the cover plate, in which the cover plate is embedded and connected by fasteners. The annular groove provides accurate installation positioning for the cover plate. The first sealing element between the inner wall of the annular groove and the cover plate forms a radial seal. The sealing element is uniformly compressed under the action of the fasteners to generate a stable pre-tightening force, which is suitable for the high-pressure underwater environment. The installation cavity encloses the electrical components, while the second sealing element sandwiched between the hull and the large surface of the cover plate achieves axial sealing. The first and second sealing elements are arranged around the electrical components to block water and moisture from entering from the circumferential gaps, thus constructing a labyrinthine sealing structure, extending the water vapor penetration path and achieving multi-stage sealing, thereby improving the sealing effect of the sealing structure. Attached Figure Description

[0017] Figure 1 An exploded view of a sealing structure provided in one embodiment of this utility model;

[0018] Figure 2 A perspective view of a sealing structure provided for another embodiment of this utility model;

[0019] Figure 3 A front view of a sealing structure provided in an embodiment of this utility model;

[0020] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0021] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0022] Figure 6 A front view of a sealing structure without a cover plate, provided in one embodiment of the present utility model;

[0023] Figure 7 A perspective view of a sealing structure without a cover plate, provided for one embodiment of the present utility model;

[0024] Figure 8 This is a perspective view of a cover plate with a sealing structure provided in one embodiment of the present invention.

[0025] Labeling: hull 10, first limiting groove 11, annular groove 12, wiring channel 13, cover plate 20, second limiting groove 21, boss 22, third limiting groove 23, electrical component 30, lead wire 31, first seal 40, second seal 50, trapezoidal sealing protrusion 51. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] like Figures 1-4As shown, the sealing device of the electrical component 30 according to an embodiment of this application is used to install on the door frame side post of the stratified water intake device. It includes a housing 10 and a cover plate 20. The housing 10 is provided with an annular groove on the side facing the cover plate 20. The cover plate 20 is embedded in the annular groove. The housing 10 and the cover plate 20 are connected by fasteners. The housing 10 defines an installation cavity. The electrical component 30 is provided in the installation cavity. A first sealing element 40 is sandwiched between the inner wall of the annular groove and the cover plate 20. A second sealing element 50 is sandwiched on the large surface opposite to the housing 10 and the cover plate 20. The first sealing element 40 and the second sealing element 50 are sequentially arranged around the electrical component 30 and spaced apart.

[0028] In detail, the hull 10 can be made of high-strength engineering plastics (such as polycarbonate PC, polyphenylene sulfide PPS) or corrosion-resistant metal materials (such as 316L stainless steel, titanium alloy) to cope with seawater or highly corrosive water environments.

[0029] The edge of the hull 10 extends outward along the thickness direction to form a step, and the step and the edge of the hull 10 together define an annular groove.

[0030] The cover plate 20 can be made of aluminum alloy such as 6061 aluminum alloy, stainless steel such as 304, or carbon steel; it can also be made of composite materials such as glass fiber reinforced plastic (FRP). The edges of the cover plate 20 can be straight, beveled, or stepped. In the straight structure, the sidewalls of the cover plate 20 are perpendicular to the large surface of the cover plate 20. In the beveled structure, the sidewalls of the cover plate 20 are inclined to the large surface of the cover plate 20, and the sidewalls are machined to be inclined at 45° or 60° relative to the large surface of the cover plate 20. In the stepped structure, the edges of the cover plate 20 are set with multiple steps. It can be understood that the inner wall structure of the annular groove matches the edge structure of the cover plate 20.

[0031] The surface of the cover plate 20 may be provided with cross-shaped, grid-shaped or radial reinforcing ribs to enhance the compressive strength of the cover plate 20.

[0032] The first sealing element 40 can be an O-ring with a circular cross-section. The material can be nitrile rubber (NBR), fluororubber (FKM), neoprene rubber, silicone rubber (VMQ), etc., or it can be a lip-type sealing ring or a special-shaped sealing ring, etc.

[0033] The fasteners can be stainless steel countersunk screws, and the cover plate 20 can be formed by stamping aluminum alloy sheet with a waterproof coating on the surface.

[0034] The first seal 40 can be configured as an O-ring or a lip seal.

[0035] Electrical component 30 includes an electromagnetic coil, a control and communication module, and connecting wires, etc.

[0036] like Figure 1 and Figure 4 As shown, in the sealing device of the electrical component 30 according to the embodiment of this application, the hull 10 is provided with an annular groove on the side facing the cover plate 20, the cover plate 20 is embedded in it and connected by fasteners, the annular groove provides accurate installation positioning for the cover plate 20, the first sealing element 40 between the inner wall of the annular groove and the cover plate 20 forms a radial seal, the sealing element is uniformly compressed under the action of the fastener to generate a stable pre-tightening force, adapting to the high pressure environment underwater, and the installation cavity encloses the electrical component 30 therein, while the second sealing element 50 sandwiched between the large surfaces of the hull 10 and the cover plate 20 achieves axial sealing. The first sealing element 40 and the second sealing element 50 are arranged around the electrical component 30 to block water and moisture from entering from the circumferential gaps, constructing a labyrinth-like sealing structure, extending the water vapor penetration path and achieving multi-level sealing, thereby improving the sealing effect of the sealing device of the electrical component 30.

[0037] According to the sealing device of the electrical component 30 in this application embodiment, the axial direction of both the housing 10 and the cover plate 20 is arranged along a first direction, and the first seal 40 and the second seal 50 are arranged sequentially in a second direction, which is perpendicular to the first direction. The second direction being perpendicular to the first direction ensures that the force directions of the first seal 40 and the second seal 50 are independent, preventing seal failure due to excessive force in one direction. Even if one seal (first seal 40 and second seal 50) suffers slight damage or aging, the other can still maintain basic protective functions, improving the stability and reliability of the overall sealing device. Simultaneously, it facilitates flexible selection of seal types and installation methods based on the structure of the housing 10 and the cover plate 20. For example, the annular groove of the housing 10 can accommodate radial seals of different shapes, and various axial sealing forms can be used at the large-area contact point between the cover plate 20 and the housing 10. This layout also facilitates the replacement and maintenance of the seals (first seal 40 and second seal 50), reducing maintenance difficulty and cost.

[0038] According to the sealing device of the electrical component 30 in the embodiment of this application, the housing 10 is further provided with a wiring channel communicating with the mounting cavity, a lead wire electrically connected to the electrical component 30 is provided in the wiring channel, and a sealing filler is filled between the lead wire and the inner wall of the wiring channel.

[0039] In detail, the wiring channel connects the installation cavity to the outside world. The leads installed within enable electrical conduction between the electrical component 30 and external devices. The presence of sealing filler fills the tiny gaps between the leads and the inner wall of the channel. Fillers made of materials such as epoxy resin and silicone rubber, after curing, bond tightly to the leads and the inner wall of the channel, forming a continuous sealing layer that effectively prevents water, moisture, dust, and other impurities from entering the installation cavity through the wiring channel. In addition, the sealing filler also fixes and buffers the leads, preventing them from shaking or wearing under conditions such as water flow impact and vibration, ensuring the stability and reliability of electrical conduction, and avoiding communication interruptions or module failures caused by loose or damaged leads. This provides a strong guarantee for the stable operation of the electrical component 30 in complex underwater environments.

[0040] The wiring channel is located at the top of the annular groove 12.

[0041] The cross-sectional shape of the wiring channel perpendicular to its own extension direction can be cylindrical, flared, or spiral, etc. Among them, the flared type has a larger diameter at the end near the mounting cavity and a smaller diameter at the end away from the mounting cavity. The sealing filler can be epoxy resin, silicone rubber, or polyurethane, etc.

[0042] like Figure 1 As shown, in the sealing device of the electrical component 30 according to the embodiment of this application, a first limiting groove 11 is provided on the side of the housing 10 facing the cover plate 20, and a second limiting groove 21 is provided on the cover plate 20. The first limiting groove 11 and the second limiting groove 21 are arranged opposite to each other. The second sealing member 50 is simultaneously embedded in the first limiting groove 11 and the second limiting groove 21. The second sealing member 50 includes a plurality of trapezoidal sealing protrusions 51, and the second limiting groove 21 includes a plurality of trapezoidal grooves. The trapezoidal sealing protrusions 51 are embedded in the corresponding trapezoidal grooves.

[0043] In detail, the first limiting groove 11 of the hull 10 and the second limiting groove 21 of the cover plate 20 are arranged opposite to each other, forming a precise positioning and double constraint on the trapezoidal sealing ring: the second sealing ring is stuck in the first limiting groove 11 and the second limiting groove 21, and cannot be moved laterally during installation, ensuring that the second sealing ring is always located on the docking center surface of the hull 10 and the cover plate 20. When the fastener is tightened, the inclined structure of the trapezoidal sealing ring converts the axial pressure into radial extrusion force on the two side groove walls—the upper bottom is narrow and the lower side wall is narrow. After being subjected to vertical extrusion from the fastener to the interface between the second seal 50 and the second limiting groove 21, the trapezoidal groove, including multiple trapezoidal sealing protrusions 51, provides sufficient space for extrusion deformation due to the staggered distribution of the second seal 50 and the second limiting groove 21. This greatly enhances the sealing performance, realizing convenient installation and positioning of the second sealing ring, and strengthening the axial sealing performance by utilizing the mechanical properties of the trapezoidal cross section. It is especially suitable for long-term reliable sealing in high-pressure water flow environments, effectively preventing water vapor from seeping into the installation cavity from the large contact area between the shell 10 and the cover plate 20, providing durable and stable protection for the electrical components 30.

[0044] like Figure 6 As shown, in some embodiments, the inner wall of the mounting cavity forms at least one layer of stepped annular grooves 12, which are projected in the plane where the cover plate 20 is located. The orthographic projection of the first limiting groove 11 is fitted outside the orthographic projection of the annular groove 12, and the electrical component 30 is snapped into any of the annular grooves 12.

[0045] The depth and width of the annular groove 12 are adapted to the external dimensions of the electrical component 30. In some embodiments, the inner wall of the annular groove 12 is provided with barbs or buckles, which can be precisely engaged with the slots on the edge of the electrical component 30, so that the electrical component 30 is securely installed and keeps the center aligned, avoiding displacement caused by vibration.

[0046] The first limiting groove 11 is fitted inside the projection surface of the cover plate 20, outside the two annular grooves 12. Its cross-sectional shape matches the second sealing element 50 (such as a trapezoidal sealing ring), providing fitting space for the second sealing element 50. When the cover plate 20 is embedded in the annular groove and locked by fasteners, the second sealing element 50 is compressed between the first limiting groove 11 and the second limiting groove 21, forming an annular sealing band around the electrical component 30. The sealing area of ​​the second sealing element 50 completely covers the module installation position, preventing moisture from seeping in from the gap between the electrical component 30 and the annular groove 12 or the mating surface between the housing 10 and the cover plate 20. At the same time, the stepped structure creates a height difference in the installation cavity. Even if a small amount of moisture breaks through the outer second sealing element 50, it will condense at the step due to the change in path and spatial compression, making it difficult to reach the inner electrical component 30, thereby further improving the sealing reliability.

[0047] like Figure 6 and Figure 7As shown, in some embodiments, the annular groove 12 is shaped like a racket, and the second seal 50 is bonded to the wall of the first limiting groove 11 by a hot vulcanization process.

[0048] In detail, the hot vulcanization process firmly bonds the second seal 50 to the wall of the first limiting groove 11, forming an integrated structure. This feature significantly enhances the reliability of the seal. When facing complex underwater environments, such as water flow impact and pressure fluctuations, the second seal 50 will not easily shift or fall off. After bonding, the overall integrity of the sealing device is stronger, which can effectively prevent water, moisture and other media from entering the installation cavity from the seal, providing a stable operating environment for the electrical components 30.

[0049] like Figure 1 , Figure 4 as well as Figure 5 As shown, in some embodiments, the second seal 50 is provided with equally spaced and parallel sealing teeth on the side facing the cover plate 20, and the sealing teeth abut against the cover plate 20.

[0050] Specifically, the equidistant, parallel sealing teeth of the second sealing element 50 facing the cover plate 20 abut tightly against the surface of the cover plate 20, achieving multiple sealing enhancements through the toothed protrusion structure: the sealing teeth are arranged at a uniform spacing, and when under pressure, the tooth tips first adhere to the cover plate 20, and the tooth body elastically deforms to fill the fine valleys on the surface, transforming the planar contact into a dense line-surface joint seal, effectively increasing the sealing contact area; the gaps formed between the teeth constitute a meandering channel, requiring water vapor to bypass along the tooth peaks through multiple gaps, significantly extending the penetration path and forming a labyrinth-like barrier effect; the elastic characteristics of the sealing teeth enable them to adapt to the cover plate 20. Minor surface undulations or processing errors, even with uneven surfaces, allow the teeth to remain tightly fitted after compression deformation, maintaining good sealing pressure. The equidistantly distributed tooth structure can also evenly transmit the pressure of the fastener to each sealing tooth, avoiding excessive local stress that could damage the seal. When water flow impacts or equipment vibrates, the elastic buffer of the teeth can reduce the relative slippage between the seal and the cover plate 20, thereby constructing a reliable sealing barrier that is impact-resistant, wear-resistant, and adaptable to complex surfaces. This effectively prevents moisture from seeping into the installation cavity from the mating surface between the housing 10 and the cover plate 20, providing protection for the electrical components 30.

[0051] like Figures 6-8As shown, in some embodiments, the cover plate 20 is provided with a racket-shaped boss 22, and a second limiting groove 21 is provided around the boss 22, with the boss 22 embedded in the mounting cavity. The shape of the racket-shaped boss 22 precisely matches the contour of the inner wall of the mounting cavity. When the boss 22 is embedded in the mounting cavity, it acts as a guide structure to guide the cover plate 20 to be quickly positioned, ensuring that the second sealing element 50 (such as a trapezoidal sealing ring) accurately aligns with the first limiting groove 11 of the housing 10, avoiding sealing failure due to installation deviation. The second limiting groove 21 on the outer periphery of the boss 22 provides an annular mounting space for the second sealing element 50. When the cover plate 20 is embedded in the annular groove and locked by fasteners, the second sealing element 50 is compressed between the second limiting groove 21 and the first limiting groove 11, forming a closed seal around the boss 22, effectively preventing moisture from axially seeping in from the mating surface between the cover plate 20 and the housing 10. Meanwhile, the embedded boss 22 design enhances the mechanical connection rigidity between the housing 10 and the cover plate 20, enabling the second seal 50 to maintain a stable compression state during long-term use, thereby providing reliable sealing protection.

[0052] According to the sealing device of the electrical component 30 in this application embodiment, both the housing 10 and the cover plate 20 have a racket-shaped structure. The racket-shaped "face" area ensures the installation of part of the electrical component 30, while the narrowed "handle" design adapts to the installation of another part of the electrical component 30, thereby reducing the volume and fitting into the narrow installation space of the door frame side column of the stratified water intake device, achieving a compact layout.

[0053] In some embodiments, a third annular limiting groove 23 is provided on the circumferential sidewall of the cover plate 20, and the first sealing member 40 is an O-ring, with a portion of the first sealing member 40 embedded in the third limiting groove 23.

[0054] In detail, the third limiting groove 23 is arranged around the edge of the cover plate 20 to provide fitting space for the O-ring seal. The seal is partially embedded in the groove and partially exposed. The part embedded in the groove plays a mechanical positioning role to prevent the seal from sliding or twisting circumferentially during installation and to ensure that it is always in the correct sealing position. The other part of the first sealing ring undergoes elastic deformation under the compression of the annular groove, filling the gap between the two and forming a continuous closed annular sealing band, which effectively prevents water and moisture from seeping into the installation cavity from the circumferential gap.

[0055] The stratified water intake device according to this application includes a door frame side post and a sealing device for the electrical component 30 as described above, wherein the sealing device for the electrical component 30 is disposed on the door frame side post.

[0056] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.

Claims

1. A sealing structure for installation on the side post of the door frame of a stratified water intake device, characterized in that, The device includes a hull and a cover plate. The hull has an annular groove on the side facing the cover plate, and the cover plate is embedded in the annular groove. The hull and the cover plate are connected by fasteners. The hull defines an installation cavity, and an electrical component is installed in the installation cavity. A first sealing element is sandwiched between the inner wall of the annular groove and the cover plate, and a second sealing element is sandwiched on the large surfaces of the hull and the cover plate facing each other. The first sealing element and the second sealing element are sequentially arranged around the electrical component and spaced apart.

2. The sealing structure according to claim 1, characterized in that, The axial direction of the hull and the cover plate is both arranged along the first direction, and the first seal and the second seal are arranged sequentially in the second direction, which is perpendicular to the first direction.

3. The sealing structure according to claim 1, characterized in that, The housing is also provided with a wiring channel communicating with the mounting cavity. The wiring channel is provided with a lead wire that is electrically connected to the electrical components. The space between the lead wire and the inner wall of the wiring channel is filled with sealing filler.

4. The sealing structure according to claim 1, characterized in that, A first limiting groove is provided on the side of the hull facing the cover plate, and a second limiting groove is provided on the cover plate. The first limiting groove and the second limiting groove are arranged opposite to each other. The second sealing member is simultaneously embedded in the first limiting groove and the second limiting groove. The second sealing member includes a plurality of trapezoidal sealing protrusions, and the second limiting groove includes a plurality of trapezoidal grooves. The trapezoidal sealing protrusions are embedded in the corresponding trapezoidal grooves.

5. The sealing structure according to claim 4, characterized in that, The inner wall of the mounting cavity forms at least one layer of stepped annular grooves that project onto the plane where the cover plate is located. The orthographic projection of the first limiting groove is fitted outside the orthographic projection of the annular groove, and the electrical component is snapped into any of the annular grooves.

6. The sealing structure according to claim 5, characterized in that, The annular groove is racket-shaped, and the second seal is bonded to the wall of the first limiting groove through a hot vulcanization process.

7. The sealing structure according to claim 6, characterized in that, The second sealing element has equally spaced and parallel sealing teeth on the side facing the cover plate, and the sealing teeth abut against the cover plate.

8. The sealing structure according to claim 6, characterized in that, The cover plate is provided with a racket-shaped boss, and the second limiting groove ring is provided with the boss, which is embedded in the mounting cavity.

9. The sealing structure according to any one of claims 1-8, characterized in that, The outer shell and the cover plate are both racket-shaped structures; and / or the circumferential sidewall of the cover plate is provided with an annular third limiting groove, the first sealing element is an O-ring, and part of the first sealing element is embedded in the third limiting groove.

10. A stratified water intake device, characterized in that, It includes a door frame side post and a sealing structure as described in any one of claims 1-9, wherein the sealing structure is disposed on the door frame side post.

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