High-voltage connector rubber sealing ring resistant to high-voltage pulse

Abstract

The invention discloses a high-voltage connector rubber sealing ring resistant to high-voltage pulse, and belongs to the field of connector sealing, the high-voltage connector rubber sealing ring comprises a rectangular sealing ring, ribs are fixedly connected to the two inner walls of the rectangular sealing ring in a path array mode, and filling grooves attached to the inner walls of the rectangular sealing ring are formed in the surfaces of the ribs in a path array mode. Nanoscale carbon fiber reinforced silica gel is embedded into the filling groove; through cooperative use of the devices, the contact area of the ribs and the inner wall of the connector is increased through the trapezoidal cross sections, the high-pressure pulse bearing capacity of the rubber sealing ring of the high-pressure connector is improved by matching with the deformation compensation capacity of the filling grooves, the annular grooves can relieve instantaneous pressure impact caused by high-pressure pulses, instantaneous deformation of the sealing face is reduced, and the service life of the rubber sealing ring is prolonged. The sealing failure risk is further reduced, so that the effect of improving the high-voltage pulse resistance of the rubber sealing ring is achieved, adhesion of the silica gel and the metal inner wall under high pressure is avoided through the polytetrafluoroethylene wear-resistant coating, and damage to the sealing face during plugging and unplugging is reduced.

Description

Technical Field

[0001] This invention relates to the field of connector sealing technology, specifically a rubber sealing ring for high-voltage pulse connectors. Background Technology

[0002] High-voltage connectors are electrical connection devices specifically designed for high-voltage, high-current scenarios. Their core function is to ensure the safe transmission and disconnection of electrical energy in high-voltage systems, while also guaranteeing the insulation, sealing, and environmental reliability of the connection points. They are widely used in new energy vehicles, industrial high-voltage equipment, aerospace, energy storage systems, and other fields. Their design must consider three core requirements: electrical performance, mechanical performance, and environmental adaptability. Compared with ordinary low-voltage connectors (such as USB and terminal blocks), high-voltage connectors have more stringent performance indicators and must meet the requirements for safe and stable transmission under high-voltage environments. Core features include: high voltage withstand capability, high current transmission capability, strong insulation and protection against electric shock, high sealing and environmental resistance, as well as safety interlocking and fault protection.

[0003] When using most existing high-voltage connector rubber sealing rings, the pre-treated sealing ring is typically embedded into the sealing groove of the connector to ensure that the sealing ring fits completely against the bottom of the groove without twisting or flipping. The male and female ends of the connector are then manually and slowly pushed in to mate, avoiding violent impacts, and finally the installation of the rubber sealing ring is completed.

[0004] Although the rubber sealing ring can be installed using the above method, the inability to accurately position it during installation necessitates multiple checks to prevent damage due to misalignment. This makes assembly difficult, inconvenient, and ultimately reduces installation efficiency.

[0005] Therefore, the present invention provides a high-voltage pulse high-voltage connector rubber sealing ring to solve the above problems. Summary of the Invention

[0006] This invention provides a high-voltage pulse high-voltage connector rubber sealing ring, which aims to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-voltage pulse high-voltage connector rubber sealing ring, comprising a rectangular sealing ring, wherein the two inner walls of the rectangular sealing ring are fixedly connected with ribs in a path array, and the surface of the ribs is provided with filling grooves in a path array that fit against the inner wall of the rectangular sealing ring, the filling grooves are embedded with nano-level carbon fiber reinforced silicone, the ribs are perpendicular to the rectangular sealing ring, the ribs are trapezoidal gradient cross-sections with a wide root and a narrow top, the rectangular sealing ring is made of self-lubricating silicone that has the effect of silicone oil seeping out in its natural state, the rectangular sealing ring is equipped with a pressure relief mechanism, and the top of the ribs is coated with a polytetrafluoroethylene wear-resistant coating, the surface of the polytetrafluoroethylene wear-resistant coating having a micron-level concave-convex texture.

[0008] As a preferred technical solution of this application, both sides of the rectangular sealing ring are fixedly connected with hemispherical elastic protrusions with rounded corners at the top. The hemispherical elastic protrusions are used to precisely engage with the positioning holes of the cavity of the high-voltage connector.

[0009] As a preferred technical solution of this application, a marking strip is fixedly connected to the top of both sides of the rectangular sealing ring, the four corners of the rectangular sealing ring are rounded, the filling rate of the rectangular sealing ring is 83%, and the interference of the rectangular sealing ring is set to 25%-30%.

[0010] As a preferred technical solution of this application, the pressure relief mechanism includes an annular groove formed on the inner wall of a rectangular sealing ring and corresponding to the high-pressure connector. The interior of the rectangular sealing ring is provided with a rectangular array of collection grooves that communicate with the annular grooves, and every two corresponding collection grooves are connected.

[0011] As a preferred technical solution of this application, the pressure relief mechanism further includes pressure relief holes opened in the inner walls of two of the collection tanks and penetrating the rectangular sealing ring, and a silicone check valve is provided inside the pressure relief hole.

[0012] As a preferred technical solution of this application, a silicone filter screen is fixedly connected inside the collection tank, and the surface of the silicone filter screen is provided with porous activated carbon particles corresponding to the collection tank. The porous activated carbon particles are used to filter trace amounts of condensate and oil.

[0013] As a preferred technical solution of this application, the collection groove and the annular groove are used to discharge trace amounts of condensate and oil stains under high-pressure pulse environment, and the connection between the rib and the rectangular sealing ring is rounded.

[0014] Based on the interplay of the rectangular sealing ring, ribs, and filling groove, the trapezoidal cross-section increases the contact area between the ribs and the inner wall of the connector. Combined with the deformation compensation capability of the filling groove, this increases the high-voltage pulse withstand capability of the rubber sealing ring of the high-voltage connector. Furthermore, the annular groove can alleviate the instantaneous pressure impact caused by the high-voltage pulse, reduce the instantaneous deformation of the sealing surface, and further reduce the risk of seal failure. This achieves the effect of improving the high-voltage pulse resistance of the rubber sealing ring. In addition, the PTFE wear-resistant coating prevents the silicone from adhering to the metal inner wall under high pressure, reducing damage to the sealing surface during insertion and removal. Based on the cooperation of hemispherical elastic protrusions and marking strips, the hemispherical elastic protrusions can precisely engage with the positioning holes of the connector cavity. During assembly, there is no need to repeatedly align the reference. Operators can judge whether the assembly position is in place by feel, thereby indirectly improving the installation efficiency of the rubber sealing ring and avoiding the need for workers to calibrate the installation position. In addition, the marking strips mark the assembly direction of the rubber sealing ring, avoiding sealing failure caused by incorrect assembly direction. The volume fill rate of the rectangular sealing ring is controlled at 83%, which is achieved through precise silicone dosage. This avoids excessive pressure during assembly due to overfilling, preventing the ring from not fitting properly, and also prevents structural strength from being affected by underfilling. The interference fit between the rib and the connector sealing surface is designed to be 28%. Through the elastic deformation of the silicone, the rib fits tightly against the inner wall of the connector, eliminating gaps and ensuring that there is no excess space on the sealing surface. At the same time, it avoids assembly jamming due to too small a gap. Based on the design of the pressure relief mechanism and other structures, in high-pressure pulse environments containing trace amounts of condensate and oil, the annular groove can guide the accumulated liquid to the pressure relief hole, avoiding the sealing failure caused by the accumulation of liquid on the sealing surface. The silicone check valve ensures that the IP68 waterproof rating is maintained after pressure relief, and the activated carbon particles can adsorb tiny impurities in the fluid, preventing impurities from scratching the sealing surface or clogging the pressure relief hole, thus extending the service life of the rectangular sealing ring and connector. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a rubber sealing ring for a high-voltage pulse connector; Figure 2 This is a schematic diagram of the rectangular sealing ring and ribs in a high-voltage pulse connector rubber sealing ring. Figure 3 This is a schematic diagram of the structure of the ribs, filling groove, and rectangular sealing ring in a high-voltage pulse connector rubber sealing ring. Figure 4 This is a schematic diagram of the rectangular sealing ring and pressure relief mechanism in a high-voltage pulse connector rubber sealing ring. Figure 5 For a high-voltage pulse high-voltage connector rubber sealing ring Figure 4 Enlarged structural diagram at point A in the middle.

[0016] In the picture: 1. Rectangular sealing ring; 2. Rib; 3. Filling groove; 4. Hemispherical elastic protrusion; 5. Marking strip; 6. Annular groove; 7. Collection groove; 8. Pressure relief hole; 9. Silicone check valve; 10. Silicone filter screen; 11. Nano-grade carbon fiber reinforced silicone. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] This invention provides a high-voltage pulse high-voltage connector rubber sealing ring, such as... Figures 1-5 As shown, the high-voltage pulse high-voltage connector rubber sealing ring includes a rectangular sealing ring 1. Both sides of the rectangular sealing ring 1 are fixedly connected with hemispherical elastic protrusions 4 with rounded corners at the top. The hemispherical elastic protrusions 4 are used to precisely engage with the positioning holes of the high-voltage connector cavity. The hemispherical elastic protrusion 4 can precisely engage with the positioning hole of the connector cavity. During assembly, there is no need to repeatedly align the reference. Operators can judge whether the assembly position is in place by feel, thereby indirectly improving the installation efficiency of the rubber sealing ring. Marking strips 5 are fixedly connected to the top of both sides of the rectangular sealing ring 1, and the four corners of the rectangular sealing ring 1 are rounded. Marking strip 5 marks the assembly direction of the rubber sealing ring, thus preventing seal failure due to incorrect assembly direction; The filling rate of rectangular sealing ring 1 is 83%, and the interference fit of rectangular sealing ring 1 is set to 25%-30%. The volume filling rate of the rectangular sealing ring 1 is controlled at 83%, which is achieved by precise silicone dosage. This avoids excessive pressure during assembly due to excessive filling rate, which may prevent the ring from being properly positioned, and also prevents the structural strength from being affected by excessive filling rate. The interference fit between the rib 2 and the connector sealing surface is designed to be 25%-30%. Through the elastic deformation of the silicone, the rib 2 fits tightly against the inner wall of the connector, eliminating gaps. The two inner walls of the rectangular sealing ring 1 are fixedly connected with ribs 2 in a path array. The connection between the ribs 2 and the rectangular sealing ring 1 is rounded. The surface of the ribs 2 is provided with a filling groove 3 in a path array that fits the inner wall of the rectangular sealing ring 1. Nanoscale carbon fiber reinforced silicone 11 is embedded in the filling groove 3. The ribs 2 are perpendicular to the rectangular sealing ring 1. The ribs 2 have a trapezoidal gradient cross-section shape that is wide at the root and narrow at the top. The connection angle between the rib 2 and the rectangular sealing ring 1 is 90°, and the cross-section has a "right-angle protrusion" structure, so that the rib 2 can obtain vertical support through the rectangular sealing ring 1 under high pressure pulse compression, thus preventing the rib 2 from collapsing. The joint between the rib 2 and the rectangular sealing ring 1 is rounded to avoid stress concentration that could cause the root of the rib 2 to break, and to reduce scratches on the connector sealing surface during assembly. The trapezoidal cross section increases the contact area between the rib 2 and the inner wall of the connector, and together with the deformation compensation capability of the filling groove 3, it increases the high-voltage pulse withstand capability of the rubber sealing ring of the high-voltage connector. The rectangular sealing ring 1 is made of self-lubricating silicone that allows silicone oil to seep out naturally. Self-lubricating silicone combines elasticity and rigidity. Elasticity ensures that the sealing surface fits properly, while rigidity ensures that the rectangular sealing ring 1 does not deform excessively under insertion, removal and high-pressure pulses. Under natural conditions, silicone oil will seep out to provide lubrication. The rectangular sealing ring 1 is equipped with a pressure relief mechanism, which includes an annular groove 6 formed on the inner wall of the rectangular sealing ring 1 and corresponding to the high-pressure connector. The annular groove 6 can alleviate the instantaneous pressure impact caused by high-pressure pulses, reduce the instantaneous deformation of the sealing surface, and further reduce the risk of seal failure, thereby improving the high-pressure pulse resistance of the rubber sealing ring. The rectangular sealing ring 1 has a rectangular array of collection grooves 7 connected to the annular groove 6 inside. The pressure relief mechanism also includes pressure relief holes 8 opened in the inner wall of two of the collection grooves 7 and penetrating the rectangular sealing ring 1. The pressure relief hole 8 is equipped with a silicone check valve 9. In a high-pressure pulse environment containing trace amounts of condensate and oil, the annular groove 6 can guide the accumulated liquid to the pressure relief hole 8, avoiding the accumulation of liquid on the sealing surface and the resulting seal failure. The silicone check valve 9 ensures that the IP68 waterproof rating is maintained after pressure relief, making it suitable for humid and oily industrial scenarios. A silicone filter screen 10 is fixedly connected inside the collection tank 7, and porous activated carbon particles corresponding to the collection tank 7 are provided on the surface of the silicone filter screen 10. Activated carbon particles can adsorb tiny impurities in the fluid, preventing impurities from scratching the sealing surface or clogging the pressure relief hole 8, and extending the service life of the rectangular sealing ring 1 and the connector. Porous activated carbon particles are used to filter out trace amounts of condensate and oil. Two corresponding collection tanks 7 are connected. The collection tanks 7 and the annular grooves 6 are used to discharge trace amounts of condensate and oil under high-pressure pulse conditions. The top of the rib 2 is coated with a polytetrafluoroethylene wear-resistant coating. The surface of the polytetrafluoroethylene wear-resistant coating has a micron-level texture. The polytetrafluoroethylene wear-resistant coating prevents the silicone from sticking to the inner wall of the metal under high pressure and reduces damage to the sealing surface during insertion and removal.

[0019] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rubber sealing ring for a high-voltage pulse connector, characterized in that: The device includes a rectangular sealing ring (1), on which two inner walls are fixedly connected with ribs (2) in a path array. The surface of the ribs (2) is provided with a filling groove (3) that fits against the inner wall of the rectangular sealing ring (1) in a path array. Nanoscale carbon fiber reinforced silicone (11) is embedded in the filling groove (3). The ribs (2) are perpendicular to the rectangular sealing ring (1). The ribs (2) have a trapezoidal gradient cross-section shape that is wide at the root and narrow at the top. The rectangular sealing ring (1) is made of self-lubricating silicone that has the effect of silicone oil seeping out in the natural state. A pressure relief mechanism is installed inside the rectangular sealing ring (1). The top of the ribs (2) is coated with a polytetrafluoroethylene wear-resistant coating. The surface of the polytetrafluoroethylene wear-resistant coating has a micron-level concave-convex texture.

2. The high-voltage pulse high-voltage connector rubber sealing ring according to claim 1, characterized in that: Both sides of the rectangular sealing ring (1) are fixedly connected with hemispherical elastic protrusions (4) with rounded corners at the top. The hemispherical elastic protrusions (4) are used to precisely engage with the positioning holes of the cavity of the high-voltage connector.

3. The high-voltage pulse high-voltage connector rubber sealing ring according to claim 1, characterized in that: Marking strips (5) are fixedly connected to the top of both sides of the rectangular sealing ring (1). The four corners of the rectangular sealing ring (1) are rounded. The filling rate of the rectangular sealing ring (1) is 83%. The interference of the rectangular sealing ring (1) is set to 25%-30%.

4. The high-voltage pulse high-voltage connector rubber sealing ring according to claim 1, characterized in that: The pressure relief mechanism includes an annular groove (6) on the inner wall of the rectangular sealing ring (1) and corresponding to the high-pressure connector. The interior of the rectangular sealing ring (1) is provided with a rectangular array of collection grooves (7) that communicate with the annular groove (6), and every two corresponding collection grooves (7) are connected.

5. The high-voltage pulse high-voltage connector rubber sealing ring according to claim 4, characterized in that: The pressure relief mechanism also includes pressure relief holes (8) opened in the inner walls of two of the collection grooves (7) and passing through the rectangular sealing ring (1), and a silicone check valve (9) is provided inside the pressure relief hole (8).

6. The high-voltage pulse high-voltage connector rubber sealing ring according to claim 5, characterized in that: A silicone filter screen (10) is fixedly connected inside the collection tank (7). The surface of the silicone filter screen (10) is provided with porous activated carbon particles corresponding to the collection tank (7). The porous activated carbon particles are used to filter out trace amounts of condensate and oil.

7. The high-voltage pulse high-voltage connector rubber sealing ring according to claim 4, characterized in that: The collection groove (7) and the annular groove (6) are used to discharge trace amounts of condensate and oil stains under high pressure pulse environment. The connection between the rib (2) and the rectangular sealing ring (1) is rounded.

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