High-pressure-resistant self-sealing modular power supply plug

Abstract

The invention provides a high-voltage-resistant self-sealing modular power supply plug, and belongs to the field of high-voltage-resistant equipment. The problems that a high-voltage-resistant power supply plug is complex in structure and poor in sealing effect due to ultrahigh pressure are solved. The module comprises an insulation module, a lower shell module and an upper cover module, the insulation module is arranged in the lower shell module, the upper end of the insulation module is in contact with the upper cover module, the lower shell module is connected with the upper cover module, and the lower shell module and the upper cover module are both provided with through holes in the vertical direction. The insulation module comprises insulation ceramic, a first insulation part and a second insulation part, the first insulation part and the second insulation part are both of an annular structure, the insulation ceramic is arranged between the first insulation part and the second insulation part, and an electrode mounting hole is formed in the center of the insulation ceramic in the vertical direction; and the electrode passes through the electrode mounting hole and is connected with the insulating ceramic. The high-pressure sealing plug is mainly used for high-pressure sealing plugs.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage equipment, and in particular relates to a high-voltage self-sealing modular power supply plug. Background Technology

[0002] High-pressure sealed plugs are crucial components for transmitting electrical signals and power in high-pressure environments (such as high-pressure tanks and deep-sea submersibles), and their performance has significant practical value. However, current power plugs on the market generally suffer from insufficient pressure resistance, making it difficult to operate reliably in extreme pressure environments exceeding 100 MPa. Existing power plugs employ an integrated design to ensure sealing, but this integrated design also leads to high replacement costs later on.

[0003] Chinese patent CN110676781A discloses a pressure-resistant sealing structure and manufacturing method for a watertight transom joint. It improves underwater signal transmission by reducing volume and cost, but its pressure resistance is still insufficient due to the use of epoxy resin as the insulation layer. In addition, the reliance on threaded connection makes it prone to leakage if it loosens during use. Summary of the Invention

[0004] In view of this, the present invention aims to propose a high-voltage resistant, self-sealing modular power plug to solve the problems of existing high-voltage resistant power plugs having a relatively complex structure and poor sealing effect under ultra-high voltage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-voltage resistant, self-sealing modular power supply plug, comprising an insulating module, a lower shell module, and an upper cover module. The insulating module is disposed inside the lower shell module, and its upper end contacts the upper cover module. The lower shell module is connected to the upper cover module. Both the lower shell module and the upper cover module have through holes in the vertical direction. The insulating module includes an insulating ceramic, a first insulating part, and a second insulating part. Both the first and second insulating parts are annular structures. The insulating ceramic is disposed between the first and second insulating parts. An electrode mounting hole is formed in the center of the insulating ceramic in the vertical direction. An electrode passes through the electrode mounting hole and is connected to the insulating ceramic. A first sealing gasket is disposed between the insulating ceramic and the first insulating part, and a second sealing gasket is disposed between the insulating ceramic and the second insulating part. A third sealing ring is disposed between the upper end of the second insulating part and the upper cover module. A first sealing ring is disposed between the side of the second insulating part and the lower shell module, and a second sealing ring is disposed between the side of the first insulating part and the lower shell module.

[0006] Furthermore, the first insulating part is located on the high-voltage side, and the second insulating part is located on the low-voltage side.

[0007] Furthermore, an insulating adhesive is provided between the electrode and the insulating ceramic.

[0008] Furthermore, the lower shell module and the upper cover module are connected by multiple fastening components. These fastening components are evenly distributed along the circumference of the lower shell module and the upper cover module. Each fastening component includes a fastening bolt, an anti-loosening washer, and a fastening nut. The fastening bolt passes through the lower shell module and the upper cover module and is fitted with an anti-loosening washer. The fastening nut is screwed to the fastening bolt.

[0009] Furthermore, the first insulating part and the second insulating part are connected by a plurality of insulating bolts, which are evenly distributed along the first insulating part and the second insulating part, and insulating washers are provided on the insulating bolts.

[0010] Furthermore, both the first and second insulating portions have chamfered edges.

[0011] Furthermore, the lower shell module has two radial grooves, and the first sealing ring and the second sealing ring are respectively disposed in the two radial grooves.

[0012] Furthermore, positioning grooves are provided on opposite sides of the first and second insulating parts, and the insulating ceramic is disposed in the positioning grooves.

[0013] Furthermore, the upper end of the second insulating part is provided with an annular groove, and the third sealing ring is disposed in the annular groove.

[0014] Furthermore, the electrode mounting hole is a stepped hole, with the stepped hole platform abutting against the electrode.

[0015] Compared with existing technologies, the advantages of this invention are as follows: This invention provides a high-pressure resistant, self-sealing modular power plug. It utilizes high-performance ceramic materials to construct the sealing and insulation structure, significantly improving the overall pressure resistance. It can be reliably applied to extreme high-pressure environments exceeding 100 MPa, solving the problem of insufficient pressure resistance in existing power plugs. This invention utilizes the pressure difference effect under high-pressure conditions to automatically form a structural self-sealing when the plug is subjected to high pressure: the high-pressure side pressure acts on the insulating ceramic, compressing the sealing gasket between the insulating ceramic and the second insulating part to form the first self-sealing; simultaneously, pressure compresses the sealing ring between the second insulating part and the upper cover module to form the second self-sealing. In this way, the risk of air leakage caused by loosening in traditional threaded connections is fundamentally overcome, greatly improving the sealing reliability and safety of the plug under long-term high-pressure environments.

[0016] Furthermore, this invention employs a modular design, placing the insulation module as an independent unit between the lower shell module and the upper cover module. When the sealing gasket or sealing ring inside the power plug wears or is damaged due to harsh operating conditions, it can be quickly replaced simply by reducing the high-voltage side pressure to atmospheric pressure, loosening the fastening components, and opening the upper cover module. This avoids the high cost of replacing the entire plug as in traditional integrated designs, effectively reducing subsequent maintenance costs and improving replacement efficiency. The self-sealing modular power plug of this application ensures both the plug's sealing performance and facilitates future replacement, solving the problem in existing solutions where sealing and replacement efficiency cannot be simultaneously guaranteed.

[0017] In terms of sealing, a double-layer radial sealing structure is formed between the insulation module and the lower shell module by setting a first sealing ring and a second sealing ring. This ensures that even if one of the sealing rings is damaged, the overall structural integrity is maintained. Simultaneously, based on the excellent insulating properties of ceramic materials, the plug ensures both a high-strength seal between the electrodes and the stability and reliability of electrical signals and power transmission. Attached Figure Description

[0018] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1 This is a cross-sectional view of a high-voltage resistant, self-sealing modular power supply plug according to the present invention. Figure 2 This is a cross-sectional view of the insulation module described in this invention; Figure 3 As described in this invention Figure 2 Enlarged structural diagram at point A in the middle.

[0019] In the picture: 01-Insulation module, 10-Lower shell module, 11-Upper cover module, 12-Fasting bolt, 13-Anti-loosening washer, 14-Fasting nut, 15-First sealing ring, 16-Second sealing ring, 101-Insulating ceramic, 102-First sealing gasket, 103-First insulating part, 104-Second insulating part, 105-Electrode, 106-Insulating bolt, 107-Insulating gasket, 108-Third sealing ring, 109-Insulating adhesive, 110-Second sealing gasket. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0021] See Figure 1-3 This embodiment describes a high-voltage resistant, self-sealing modular power supply plug, comprising an insulating module 01, a lower shell module 10, and an upper cover module 11. The insulating module 01 is disposed inside the lower shell module 10, and its upper end contacts the upper cover module 11. The lower shell module 10 is connected to the upper cover module 11. Both the lower shell module 10 and the upper cover module 11 have through holes in the vertical direction. The insulating module 01 includes an insulating ceramic 101, a first insulating part 103, and a second insulating part 104. Both the first insulating part 103 and the second insulating part 104 are annular structures. The insulating ceramic 101 is disposed between the first insulating part 103 and the second insulating part 104. Between the two insulating parts 104, an electrode mounting hole is formed vertically at the center of the insulating ceramic 101. The electrode 105 passes through the electrode mounting hole and is connected to the insulating ceramic 101. A first sealing gasket 102 is provided between the insulating ceramic 101 and the first insulating part 103. A second sealing gasket 110 is provided between the insulating ceramic 101 and the second insulating part 104. A third sealing ring 108 is provided between the upper end of the second insulating part 104 and the upper cover module 11. A first sealing ring 15 is provided between the side of the second insulating part 104 and the lower shell module 10. A second sealing ring 16 is provided between the side of the first insulating part 103 and the lower shell module 10.

[0022] A preferred embodiment is as follows: the first insulating part 103 is located on the high-voltage side, and the second insulating part 104 is located on the low-voltage side. Insulating adhesive 109 is provided between the electrode 105 and the insulating ceramic 101. The lower shell module 10 and the upper cover module 11 are connected by multiple fastening components, which are evenly distributed along the circumference of the lower shell module 10 and the upper cover module 11. Each fastening component includes a fastening bolt 12, an anti-loosening washer 13, and a fastening nut 14. The fastening bolt 12 passes through the lower shell module 10 and the upper cover module 11 and is fitted with the anti-loosening washer 13. The fastening nut 14 is screwed to the fastening bolt 12. The first insulating part 103 and the second insulating part 104 are connected by multiple insulating bolts 106, which are evenly distributed along the first insulating part 103 and the second insulating part 104. Insulating washers 107 are provided on each insulating bolt 106. Both the edges of the first insulating part 103 and the second insulating part 104 have chamfers. The lower shell module 10 has two radial grooves, and the first sealing ring 15 and the second sealing ring 16 are respectively disposed in the two radial grooves. Positioning grooves are provided on opposite sides of the first insulating part 103 and the second insulating part 104, and the insulating ceramic 101 is disposed in the positioning grooves. An annular groove is provided at the upper end of the second insulating part 104, and the third sealing ring 108 is disposed in the annular groove. The electrode mounting hole is a stepped hole, and the stepped hole platform abuts against the electrode 105.

[0023] This embodiment provides a high-pressure resistant, self-sealing modular power supply plug, primarily used for power transmission in extreme high-pressure environments (such as deep-sea submersibles or high-pressure tanks). Figure 1 As shown, the power plug includes an insulation module 01, a lower shell module 10, and an upper cover module 11. The insulation module 01 is installed inside the lower shell module 10, and its upper end contacts the upper cover module 11. The lower shell module 10 and the upper cover module 11 are connected by eight sets of fastening components. Each set of fastening components consists of a fastening bolt 12, a locking washer 13, and a fastening nut 14. The fastening bolt 12 passes through the mounting holes of the lower shell module 10 and the upper cover module 11, and after sequentially fitting the locking washer 13, it is tightened with the fastening nut 14 to ensure the overall structure is stable. The first sealing ring 15 and the second sealing ring 16 ensure the secondary radial seal of the insulation module 01, ensuring that the structure remains sealed even if one sealing ring is damaged.

[0024] like Figure 2-3 As shown, the insulation module 01 consists of an insulating ceramic 101, a first insulating part 103, a second insulating part 104, an electrode 105, and a sealing assembly. The insulating ceramic 101 is fixed between the first insulating part 103 and the second insulating part 104 via a positioning groove. A stepped electrode mounting hole is provided at the center of the insulating ceramic 101. The electrode 105 passes through this hole and is fixed by adhesive 109. The stepped hole platform abuts against the electrode 105 to enhance mechanical support. A first sealing gasket 102 is provided between the insulating ceramic 101 and the first insulating part 103, and a second sealing gasket 110 is provided between the insulating ceramic 101 and the second insulating part 104 for axial sealing under high pressure. The first insulating part 103 and the second insulating part 104 are fixed together by eight sets of insulating bolts 106 and insulating gaskets 107, with the bolts evenly distributed around the circumference to uniformly compress the sealing gaskets. The first insulating part 103 is located on the high-pressure side, and the second insulating part 104 is located on the low-pressure side. Both have chamfered edges for easy assembly. The third sealing ring 108 can ensure the end seal between the second insulating part 104 and the upper cover module 11.

[0025] In this embodiment, under high-voltage operation, the pressure applied to the insulating ceramic 101 compresses the second sealing gasket 110 between the insulating ceramic 101 and the second insulating part 104, forming a first self-sealing. The pressure then compresses the third sealing ring 108 between the second insulating part 104 and the upper cover module 11, forming a second self-sealing. The first sealing ring 15 ensures a radial seal between the second insulating part 104 and the lower shell module 10, and the second sealing ring 16 ensures a radial seal between the first insulating part 103 and the lower shell module 10, forming a double-layer radial seal.

[0026] In this embodiment, under harsh operating conditions, the first sealing gasket 102, the second sealing gasket 110 inside the insulation module 01, and the first sealing ring 15, the second sealing ring 16, and the third sealing ring 108 of the power supply plug may experience wear or damage. When the insulation module 01 needs to be replaced, first reduce the air pressure on the high-voltage side to normal pressure, thereby loosening the fastening nut 14, opening the upper cover module 11, and checking the condition of the third sealing ring 108. Replace it promptly if it is damaged. Remove the insulation module 01 for replacement, then remove the first sealing ring 15 and the second sealing ring 16, clean the inside of the cavity, apply lubricating oil, install the new first sealing ring 15 and the second sealing ring 16, and push the insulation module 01 into the lower shell module 10. The edges of the first insulating part 103 and the second insulating part 104 are chamfered to facilitate installation. Then close the upper cover module 11, insert the eight fastening bolts 12, add the anti-loosening washer 13, and tighten the fastening nut 14. A torque wrench should be used to ensure the torque while avoiding damage to the structure.

[0027] The above-described implementation uses high-performance ceramic materials to construct the sealing and insulation structure, significantly improving the overall pressure resistance. It can be reliably applied to extreme high-pressure environments exceeding 100 MPa, solving the problem of insufficient pressure resistance in existing power plugs. Furthermore, utilizing the pressure difference effect under high-pressure conditions, the plug automatically forms a self-sealing structure when subjected to high pressure: fundamentally overcoming the risk of air leakage caused by loosening in traditional threaded connections, greatly improving the sealing reliability and safety of the plug under long-term high-pressure environments.

[0028] The above-described implementation adopts a modular design, with the insulation module 01 positioned as an independent unit between the lower shell module 10 and the upper cover module 11. This avoids the high cost associated with replacing the entire integrated plug, effectively reducing subsequent maintenance costs and improving replacement efficiency. The self-sealing modular power supply plug of this application ensures both the plug's sealing performance and ease of replacement, solving the problem in existing solutions where sealing and replacement efficiency cannot be simultaneously guaranteed.

[0029] Meanwhile, the insulating ceramic 101, based on the excellent insulating properties of ceramic materials, ensures the stability and reliability of electrical signals and power transmission while guaranteeing the high-strength sealing of the electrodes 105.

[0030] The specific embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific embodiments described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A high-voltage resistant, self-sealing modular power supply plug, characterized in that: It includes an insulating module (01), a lower shell module (10), and an upper cover module (11). The insulating module (01) is disposed inside the lower shell module (10), and the upper end of the insulating module (01) contacts the upper cover module (11). The lower shell module (10) is connected to the upper cover module (11). Both the lower shell module (10) and the upper cover module (11) have through holes in the vertical direction. The insulating module (01) includes an insulating ceramic (101), a first insulating part (103), and a second insulating part (104). The first insulating part (103) and the second insulating part (104) are both annular structures. The insulating ceramic (101) is disposed between the first insulating part (103) and the second insulating part (104). An electrode mounting hole is provided in the center of the insulating ceramic (101) along the vertical direction. An electrode (105) passes through the electrode mounting hole and is connected to the insulating ceramic (101). A first sealing gasket (102) is provided between the insulating ceramic (101) and the first insulating part (103). A second sealing gasket (110) is provided between the insulating ceramic (101) and the second insulating part (104). A third sealing ring (108) is provided between the upper end of the second insulating part (104) and the upper cover module (11). A first sealing ring (15) is provided between the side of the second insulating part (104) and the lower shell module (10). A second sealing ring (16) is provided between the side of the first insulating part (103) and the lower shell module (10).

2. The high-voltage resistant, self-sealing modular power supply plug according to claim 1, characterized in that: The first insulating part (103) is located on the high-voltage side, and the second insulating part (104) is located on the low-voltage side.

3. The high-voltage resistant, self-sealing modular power supply plug according to claim 1, characterized in that: An insulating adhesive (109) is provided between the electrode (105) and the insulating ceramic (101).

4. The high-voltage resistant, self-sealing modular power supply plug according to claim 1, characterized in that: The lower shell module (10) and the upper cover module (11) are connected by multiple fastening components. The multiple fastening components are evenly distributed along the circumference of the lower shell module (10) and the upper cover module (11). The fastening components include fastening bolts (12), anti-loosening washers (13) and fastening nuts (14). The fastening bolts (12) pass through the lower shell module (10) and the upper cover module (11) and are then fitted with anti-loosening washers (13). The fastening nuts (14) are screwed to the fastening bolts (12).

5. A high-voltage resistant, self-sealing modular power supply plug according to claim 1, characterized in that: The first insulating part (103) and the second insulating part (104) are connected by a plurality of insulating bolts (106). The plurality of insulating bolts (106) are evenly distributed along the first insulating part (103) and the second insulating part (104), and insulating washers (107) are provided on the insulating bolts (106).

6. The high-voltage resistant, self-sealing modular power supply plug according to claim 1, characterized in that: Both the first insulating part (103) and the second insulating part (104) have chamfered edges.

7. A high-voltage resistant, self-sealing modular power supply plug according to claim 1, characterized in that: The lower shell module (10) has two radial grooves, and the first sealing ring (15) and the second sealing ring (16) are respectively disposed in the two radial grooves.

8. A high-voltage resistant, self-sealing modular power supply plug according to claim 1, characterized in that: The first insulating part (103) and the second insulating part (104) are provided with positioning grooves on opposite sides, and the insulating ceramic (101) is disposed in the positioning groove.

9. A high-voltage resistant, self-sealing modular power supply plug according to claim 1, characterized in that: The upper end of the second insulating part (104) is provided with an annular groove, and the third sealing ring (108) is disposed in the annular groove.

10. A high-voltage resistant, self-sealing modular power supply plug according to claim 1, characterized in that: The electrode mounting hole is a stepped hole, and the stepped hole platform abuts against the electrode (105).

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