A push-pull self-locking LM electrode flange for ultra-high vacuum applications

Abstract

This utility model discloses a push-pull self-locking LM electrode flange for ultra-high vacuum applications, comprising a flange body with a coaxial mounting hole; an electrode feeder fixedly mounted within the mounting hole; one end of the electrode feeder has an inwardly recessed first slot, with a first pin seat at its bottom and a first PIN pin on the first pin seat; the other end of the electrode feeder has an inwardly recessed second slot, with a second pin seat at its bottom and a second PIN pin on the second pin seat; the first slot, first pin seat, and first PIN pin combine to form a first interface, and the second slot, second pin seat, and second PIN pin combine to form a second interface, with the first interface and second interface being mirror-symmetrically arranged. The beneficial effects of this utility model are: sealing performance: welded connections eliminate screw gaps, preventing gas leakage, suitable for 10... ‑7 Ultra-high vacuum environment above Pa; Stability: Gold-plated PIN pins are corrosion-resistant and have low resistance, ensuring high-frequency signal transmission accuracy.

Description

Technical Field

[0001] This utility model relates to the field of electrode flange technology, and in particular to a push-pull self-locking LM electrode flange for use in the field of ultra-high vacuum. Background Technology

[0002] In scientific research and industrial applications in the ultra-high vacuum (UHV) field, electrode flanges, as key connecting components for the transmission of electrical signals, current, and temperature, directly affect the reliability of the system due to their sealing performance, stability, and ease of operation. Traditional electrode flanges suffer from the following technical defects:

[0003] Insufficient sealing: Existing technologies mostly use screws to fix the electrodes and flanges. Screw gaps can easily lead to gas leakage, making it difficult to meet the requirements of ultra-high vacuum environments (≤10). -7 The stringent sealing requirements of Pa) significantly increase the risk of leakage, especially under thermal cycling or mechanical vibration.

[0004] Complex structure and large space occupation: Traditional electrode flanges rely on the assembly of multiple parts such as screws and gaskets, which is cumbersome to operate and requires additional tools (such as wrenches). In space-constrained equipment (such as particle detectors and synchrotron radiation devices), the bulky structure limits the flexibility of equipment layout.

[0005] Poor signal transmission stability: The electrode contact points are prone to oxidation or corrosion, which leads to increased contact resistance (often >20mΩ), affecting the accuracy of high-frequency signal transmission. Performance degradation is particularly noticeable during long-term use or in high-humidity environments.

[0006] Low installation tolerance: Lacking foolproof design, incorrect insertion can easily lead to bent pins or damaged interfaces, increasing maintenance costs and the risk of experimental interruption.

[0007] Compatibility limitations: Most electrode flanges only support a single interface standard and cannot be adapted to the widely used Lemo interface, requiring additional adapters and further reducing system reliability.

[0008] Therefore, there is an urgent need for a push-pull self-locking LM electrode flange for the ultra-high vacuum field, which can ensure ultra-high vacuum sealing while achieving rapid installation, stable transmission and space optimization, so as to solve the above-mentioned technical bottlenecks. Utility Model Content

[0009] The main technical problem solved by this utility model is to provide a push-pull self-locking LM electrode flange for use in the ultra-high vacuum field, thereby solving one or more of the above-mentioned prior art problems.

[0010] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a push-pull self-locking LM electrode flange for ultra-high vacuum applications, the innovation of which lies in: including...

[0011] The flange body has coaxial mounting holes.

[0012] An electrode feedthrough is fixedly assembled in the mounting hole;

[0013] One end of the electrode feeder is provided with an inwardly recessed first slot, and the bottom of the slot is provided with a first pin seat, on which a first pin is provided;

[0014] The other end of the electrode feeder is provided with an inwardly recessed second slot, and the bottom of the slot is provided with a second pin seat, on which a second pin is provided.

[0015] The first slot, the first pin socket, and the first PIN pin combine to form a first interface, and the second slot, the second pin socket, and the second PIN pin combine to form a second interface, with the first interface and the second interface being arranged in a mirror image symmetrically.

[0016] The electrode feeder is sealed and fixed to the flange body by welding;

[0017] The surfaces of the first and second pins are gold-plated.

[0018] In some embodiments, the inner wall of the first slot is provided with a first anti-fooling groove, and the inner wall of the second slot is provided with a second anti-fooling groove.

[0019] In some embodiments, the inner wall end of the first slot is provided with a first annular locking groove, and the inner wall end of the second slot is provided with a second annular locking groove.

[0020] In some implementations, the flange body is machined from a CF vacuum flange as the base material.

[0021] In some implementations, the electrode feeder is a male-to-male electrode feeder compatible with the LEMO interface.

[0022] In some embodiments, the welded connection is located at the assembly mating surface between the flange body and the electrode feeder.

[0023] The beneficial effects of this utility model are: Sealing: Welded connections eliminate screw gaps, preventing gas leakage, and are suitable for 10 -7 Ultra-high vacuum environment above Pa; Stability: Gold-plated PIN pins are corrosion-resistant and have low resistance, ensuring high-frequency signal transmission accuracy; Convenience: Push-pull self-locking design simplifies operation, and foolproof grooves prevent installation errors; Mirror interface supports flexible insertion and removal directions; Space optimization: Eliminates screws and locking tools, with a compact structure, suitable for space-constrained experimental equipment. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0025] Figure 1 This is a front view of a push-pull self-locking LM electrode flange for use in the ultra-high vacuum field according to this utility model.

[0026] Figure 2 yes Figure 1 A cross-sectional view along the AA direction.

[0027] Figure 3 This is a schematic diagram of the flange body of a push-pull self-locking LM electrode flange for use in the ultra-high vacuum field according to this utility model.

[0028] Figure 4 This is a cross-sectional view of the electrode feed passage of a push-pull self-locking LM electrode flange for use in the ultra-high vacuum field, according to this utility model. Detailed Implementation

[0029] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] like Figures 1 to 4 As shown, the embodiment of this utility model includes: a push-pull self-locking LM electrode flange for ultra-high vacuum applications, comprising the following structure:

[0031] The flange body 100 is machined from a CF vacuum flange as the base, and has a coaxial mounting hole 101 in the center. As a support base, it fixes the electrode feeder 200 through the mounting hole 101 to ensure coaxiality and maintain vacuum sealing. The CF flange base has high mechanical strength and vacuum compatibility, and the mounting hole 101 is designed to ensure the precise positioning of the electrode feeder 200.

[0032] The electrode feeder 200 is a male-to-male electrode feeder 200 compatible with the LEMO interface, which is fixed in the assembly hole 101 by welding; it includes a symmetrical first interface end and a second interface end.

[0033] The structure of the first interface end is as follows: the first slot 210 has an inwardly recessed structure, the end of the inner wall is provided with a first annular locking groove 214, and the side wall is provided with a first anti-fooling groove 213; the first pin seat 211 is fixed to the bottom of the first slot 210 and the first PIN pin 212 (surface gold plated) is installed.

[0034] The second interface end structure is as follows: the second slot 220 is mirror symmetrical to the first slot 210, and includes a second annular locking groove 224 and a second anti-fooling groove 223; the second pin holder 221 is fixed to the bottom of the second slot 220 and a second PIN pin 222 (gold-plated surface) is installed.

[0035] The foolproof groove prevents incorrect plug insertion; the ring-shaped locking groove provides mechanical self-locking to ensure a secure connection; and the gold-plated pins reduce contact resistance and improve the stability of electrical signal transmission.

[0036] The assembly process of this technical solution is as follows: insert the electrode feeder 200 into the assembly hole 101 of the flange body 100, and guide the direction of the plug with the anti-fooling groove to avoid reverse insertion; fix the mating surface of the flange body 100 and the electrode feeder 200 by welding, replacing the traditional screw locking.

[0037] Welding requirements: Employ high-precision welding techniques (such as laser welding) to ensure the weld is free of porosity and cracks, meeting ultra-high vacuum sealing standards (leakage rate ≤ 1×10⁻⁶). -9 Pa·m 3 / s).

[0038] The working principle of this technical solution is as follows:

[0039] Push-pull self-locking mechanism: When the external plug is inserted into the first slot 210 (or the second slot 220), the locking tongue engages with the annular locking groove, forming a mechanical self-lock; when plugging or unplugging, gently pull to unlock, no tools are required, saving operating space.

[0040] Signal transmission process: The electrical signal is transmitted through the gold-plated PIN pins, input from the first interface end, and output from the second interface end through the internal circuit of the electrode feeder 200; the mirror symmetrical interface design supports bidirectional plugging and is compatible with the standardized lemo plug.

[0041] The advantages of this technical solution are:

[0042] Sealing: Welded connections eliminate screw gaps, preventing gas leakage, suitable for 10 -7 Ultra-high vacuum environments above Pa.

[0043] Stability: Gold-plated PIN pins are corrosion-resistant and have low resistance (contact resistance ≤5mΩ), ensuring high-frequency signal transmission accuracy.

[0044] Convenience: The push-pull self-locking design simplifies operation, and the foolproof groove prevents installation errors; the mirror interface supports flexible insertion and removal directions.

[0045] Space optimization: Eliminating screws and locking tools, the structure is compact and suitable for space-constrained experimental equipment (such as particle detectors).

[0046] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A push-pull self-locking LM electrode flange for use in ultra-high vacuum applications, characterized in that: Includes a flange body (100) having a coaxial mounting hole (101); An electrode feedthrough (200) is fixedly assembled in the mounting hole (101); One end of the electrode feeder (200) is provided with an inwardly recessed first slot (210), and the bottom of the slot is provided with a first pin seat (211), on which a first PIN pin (212) is provided; The other end of the electrode feeder (200) is provided with an inwardly recessed second slot (220), and a second pin seat (221) is provided at its bottom. The second pin seat (221) is provided with a second PIN pin (222). The first slot (210), the first pin holder (211) and the first PIN pin (212) are combined to form a first interface, and the second slot (220), the second pin holder (221) and the second PIN pin (222) are combined to form a second interface, and the first interface and the second interface are arranged in a mirror symmetrical manner; The electrode feeder (200) and the flange body (100) are connected by welding to achieve a sealed and fixed connection; The surfaces of the first PIN (212) and the second PIN (222) are gold-plated.

2. The push-pull self-locking LM electrode flange for ultra-high vacuum applications according to claim 1, characterized in that: The inner wall of the first slot (210) is provided with a first anti-fooling groove (213), and the inner wall of the second slot (220) is provided with a second anti-fooling groove (223).

3. The push-pull self-locking LM electrode flange for ultra-high vacuum applications according to claim 1, characterized in that: The inner wall end of the first slot (210) is provided with a first annular locking groove (214), and the inner wall end of the second slot (220) is provided with a second annular locking groove (224).

4. A push-pull self-locking LM electrode flange for ultra-high vacuum applications according to claim 1, characterized in that: The flange body (100) is machined from a CF vacuum flange as the base material.

5. A push-pull self-locking LM electrode flange for ultra-high vacuum applications according to claim 1, characterized in that: The electrode feeder (200) is a male-to-male electrode feeder (200) compatible with the lemo interface.

6. A push-pull self-locking LM electrode flange for ultra-high vacuum applications according to claim 1, characterized in that: The welded connection is located at the assembly joint surface of the flange body (100) and the electrode feeder (200).

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