A one-way sleeve connection

Abstract

The utility model discloses a one -way sleeve pipe connecting structure relates to one -way sleeve pipe connecting structure technical field, including the inside end of insulator cabinet, the flange plate is fixedly connected with one end of inside end of insulator cabinet, the fixed mechanism is arranged at one end annular of flange plate, and the sealing mechanism is arranged at one end outside of flange plate, the outside end of insulator cabinet is connected with the sealing mechanism another end, the outside end of insulator cabinet is divided into two ends, and the outside end of insulator cabinet another end is provided with the connecting mechanism, the utility model discloses through the conductive rod and the inside end of insulator cabinet, the outside end of insulator cabinet is pasted together, and the insulation performance under humid environment is convenient to promote, has improved the insulation reliability, can realize the function of closely insulated cooperation again, through the cooperation of sealing ring and sealing groove of sealing mechanism, flange plate, it is convenient to maintain stable insulation environment, has improved the durability of insulation, can realize the function of effective sealing protection, finally solved the problem that one -way sleeve pipe connecting structure insulation reliability is poor, is vulnerable to environmental influence.

Description

Technical Field

[0001] This utility model relates to the technical field of one-way sleeve connection structure, and in particular to a one-way sleeve connection structure. Background Technology

[0002] In the transmission line connections of power equipment (such as switchgear and transformers), bushings are key components for insulation and conductivity, and the reliability of their connection structure directly affects the safe operation of the power system (a fault could lead to a power outage area exceeding 10 square kilometers). Unidirectional bushing connection structures are widely used in 10kV-220kV medium and high voltage power distribution systems because they enable unidirectional conduction between the internal and external lines of the cabinet (avoiding reverse current interference). The existing one-way bushing connection structure has several drawbacks in terms of insulation reliability. Most structures use a single material (such as epoxy resin) for the insulator, which is prone to local electric field distortion (field concentration factor exceeding 3) due to air bubbles (bubble rate exceeding 2%) or impurities (impurity particle size > 50μm), leading to partial discharge (discharge amount > 10pC). Long-term operation causes insulation aging (aging rate accelerates by 2-3 times). Furthermore, the low precision of the gap control between the insulator and the conductive rod (gap exceeding 0.1mm) easily forms surface creepage paths (creep distance shortened by 10%–15%). In humid environments (humidity > 90%), the risk of insulation breakdown increases (breakdown voltage decreases by 20%). Therefore, these technical problems need to be addressed. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a one-way sleeve connection structure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a one-way sleeve connection structure, including an inner end of an insulator cabinet, a flange fixedly connected to one end of the inner end of the insulator cabinet, a fixing mechanism provided at equal intervals in a ring at one end of the flange, and a sealing mechanism provided on the outer side of one end of the flange, the other end of the sealing mechanism being connected to the outer end of the insulator cabinet, the outer end of the insulator cabinet being divided into two ends, and a connecting mechanism provided on the other end of the outer end of the insulator cabinet.

[0005] Preferably, a through hole is provided between the outer end and the inner end of the insulator cabinet.

[0006] Preferably, the fixing mechanism includes a plurality of cabinet wall connecting threaded holes that are circumferentially and equidistantly opened at one end of the flange.

[0007] Preferably, the sealing mechanism includes a sealing groove formed on the outside of the connecting threaded hole in the cabinet wall, the sealing groove being located inside the edge of the flange, and a sealing ring being tightly fitted in the sealing groove.

[0008] Preferably, a conductive rod is installed in the through hole between the inner end and the outer end of the insulator cabinet, and the conductive rod is in close contact with the inner wall of the inner end and the outer end of the insulator cabinet.

[0009] Preferably, the connection mechanism includes four main busbar connection threaded holes equidistantly arranged in a ring at one end of the conductive rod, and an outer busbar connection threaded hole is provided in the middle of the other end of the conductive rod, and the conductive rod has the same length as the inner end and outer end of the insulator cabinet.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the close fit between the conductive rod and the inner and outer ends of the insulator cabinet, facilitates the improvement of insulation performance in humid environments, enhances insulation reliability, and thus achieves the function of tight insulation fit; through the cooperation of the sealing ring, sealing groove, and flange of the sealing mechanism, it facilitates the maintenance of a stable insulation environment, improves insulation durability, and thus achieves the function of effective sealing protection; furthermore, through the cooperation of the cabinet wall connecting threaded hole and flange of the fixing mechanism, it facilitates the stability of the overall structure, improves installation reliability, and thus achieves the function of stable connection and fixation. Ultimately, it solves the problems of poor insulation reliability and susceptibility to environmental influences in the existing unidirectional sleeve connection structure. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the other side proposed in this utility model; Figure 3 This is a schematic diagram of the rear view structure proposed in this utility model; Figure 4 This is a schematic diagram of a partial cross-sectional view of the structure proposed in this utility model.

[0012] The numbers in the diagram are: 1. Inner end of the insulator cabinet; 2. Flange; 3. Outer end of the insulator cabinet; 4. Conductor rod; 5. Threaded hole for cabinet wall connection; 6. Sealing groove; 7. Threaded hole for main busbar connection; 8. Threaded hole for outer busbar connection. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Example: See Figures 1 to 4 This utility model discloses a unidirectional sleeve connection structure, including an inner end 1 of an insulator cabinet. A flange 2 is fixedly connected to one end of the inner end 1. A fixing mechanism is provided at equal intervals in a ring at one end of the flange 2, and a sealing mechanism is provided on the outer side of one end of the flange 2. The other end of the sealing mechanism is connected to an outer end 3 of the insulator cabinet. The outer end 3 of the insulator cabinet is divided into two ends, and a connecting mechanism is provided at the other end of the outer end 3. The unidirectional sleeve connection is easily achieved through the inner end 1 of the insulator cabinet, the flange 2, the fixing mechanism, the sealing mechanism, the outer end 3 of the insulator cabinet, and the connecting mechanism. A through hole is provided between the outer end 3 of the insulator cabinet and the inner end 1 of the insulator cabinet, which facilitates the installation of conductive components. The fixing mechanism includes multiple cabinet wall connecting threaded holes 5 provided at equal intervals in a ring at one end of the flange 2, which facilitate the fixing of the sleeve structure to the cabinet wall.

[0015] In this utility model, the sealing mechanism includes a sealing groove 6 opened on the outside of the connecting threaded hole 5 on the cabinet wall. The sealing groove 6 is located inside the edge of the flange 2, and a sealing ring is tightly fitted in the sealing groove 6. The sealing groove 6 and the sealing ring on the flange 2 facilitate the sealing performance of the connection between the sleeve and the cabinet wall. A conductive rod 4 is installed in the through hole between the inner end 1 and the outer end 3 of the insulator cabinet. The conductive rod 4 is tightly fitted in the inner wall of the inner end 1 and the outer end 3 of the insulator cabinet. The conductive rod 4 in the through hole of the insulator facilitates the transmission of current. The connection mechanism includes four main busbar connecting threaded holes 7 opened equidistantly on one end of the conductive rod 4 in a ring. An external busbar connecting threaded hole 8 is opened in the middle of the other end of the conductive rod 4. The conductive rod 4 has the same length as the inner end 1 and the outer end 3 of the insulator cabinet. The main busbar connecting threaded holes 7 and the external busbar connecting threaded holes 8 on the conductive rod 4 facilitate the connection with the external busbar.

[0016] Working Principle: When using this invention, firstly, the conductive rod 4 is slowly inserted into the through hole between the inner end 1 and the outer end 3 of the insulator cabinet, ensuring that the outer surface of the conductive rod 4 is tightly fitted to the inner wall of the through hole without looseness or gaps. Then, the position of the conductive rod 4 is adjusted so that both ends of the conductive rod 4 are flush with the ends of the inner end 1 and the outer end 3 of the insulator cabinet, respectively, ensuring the stability of the subsequent connection structure. Then, the sealing ring is tightly fitted into the sealing groove 6 at the edge of the flange 2, ensuring that the sealing ring is fully embedded in the sealing groove 6 without wrinkles or misalignment. At the same time, the sealing ring is pressed to confirm that it is firmly installed, preparing for the subsequent sealing connection between the flange 2 and the cabinet wall. Then, one end of the flange 2 is aligned with the connection position of the outer cabinet wall. Align the cabinet wall connection threaded hole 5 on flange 2 with the corresponding threaded hole on the cabinet wall, and simultaneously pass the bolts through the aligned threaded holes. Tighten all bolts in sequence to ensure a tight connection between flange 2 and the cabinet wall. At this time, the sealing ring in the sealing groove 6 deforms under pressure, filling the connection gap and achieving a sealing effect. Then, according to the line connection requirements, align the connection end of the main busbar with the four main busbar connection threaded holes 7 at one end of the conductive rod 4, and fix the connection with bolts to ensure a firm connection and good conductivity. At the same time, align the connection end of the external extension busbar with the external extension busbar connection threaded hole 8 in the middle of the other end of the conductive rod 4, and fix it with bolts to complete the connection of the extension line. Then check all connection points to ensure that there is no looseness and good contact.

[0017] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A one-way bushing connection structure comprising an insulator cabinet inner end (1), characterized in that: The inner end (1) of the insulator cabinet is fixedly connected to a flange (2). A fixing mechanism is provided at equal intervals in a ring at one end of the flange (2), and a sealing mechanism is provided on the outer side of one end of the flange (2). The other end of the sealing mechanism is connected to the outer end (3) of the insulator cabinet. The outer end (3) of the insulator cabinet is divided into two ends, and a connecting mechanism is provided on the other end of the outer end (3) of the insulator cabinet.

2. A one-way sleeve connection according to claim 1, characterized in that: A through hole is provided between the outer end (3) and the inner end (1) of the insulator cabinet.

3. A one-way sleeve connection according to claim 2, characterised in that: The fixing mechanism includes a plurality of cabinet wall connecting threaded holes (5) that are circumferentially and equidistantly opened at one end of the flange (2).

4. A one-way sleeve connection according to claim 3, characterised in that: The sealing mechanism includes a sealing groove (6) opened on the outside of the connecting threaded hole (5) on the cabinet wall. The sealing groove (6) is located inside the edge of the flange (2), and a sealing ring is tightly fitted in the sealing groove (6).

5. A one-way sleeve connection according to claim 2, characterized in that: A conductive rod (4) is installed in the through hole between the inner end (1) and the outer end (3) of the insulator cabinet. The conductive rod (4) fits tightly against the inner wall of the inner end (1) and the outer end (3) of the insulator cabinet.

6. A one-way sleeve connection according to claim 5, characterised in that: The connection mechanism includes four main busbar connection threaded holes (7) that are equidistantly arranged in a ring at one end of the conductive rod (4), and an outer busbar connection threaded hole (8) is provided in the middle of the other end of the conductive rod (4). The conductive rod (4) has the same length as the inner end (1) and outer end (3) of the insulator cabinet.

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