Pressure-bearing plane sealing type electrical feed-through structure

Abstract

The utility model relates to the technical field of electrical penetration joint equipment, in particular to a pressure-bearing plane sealing type electrical feed-through structure, which plays a pressure-bearing role through threaded connection of a compression nut structure and a flange, and achieves a sealing role through the compression effect of a gasket and a sealing element. And the feed-through line and the wiring terminal can be directly crimped or crimped by a clamp, and can also be connected through a bolt, so that different installation scenes are met, the installation space is saved, the whole is convenient for production and later maintenance, and the device has a good application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical penetration joint equipment, in particular to a pressure-bearing plane sealing type electrical feed-through structure. Background Art

[0002] Cryogenic electrical penetrations are used in LNG receiving stations, LNG liquefaction plants, LNG transport ships, floating LNG liquefaction storage devices, coal coke oven gas methanation LNG production devices, and transportation projects of cryogenic media such as alkanes and olefins in chemical plants. They are used for the transportation of cryogenic media and in the loading and unloading of vehicles. Since cryogenic media are low temperature, flammable, explosive and easy to vaporize, cryogenic electrical penetrations are required to be sealed, safe and reliable.

[0003] The low-temperature electrical penetration in the prior art is composed of two flanges, and the feed-through wire is fixed to the flange through a sealing ring, a guide ring, and a locking nut. Such a structure has limitations in use in an environment with limited installation space.

[0004] Based on the above reasons, the utility model designs a pressure-bearing plane sealed electrical feedthrough structure, which has the advantages of a single flange structure low-temperature electrical feedthrough such as a replaceable feedthrough line, no inner cavity requirements and easy installation in a compact space environment. Summary of the invention

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a pressure-bearing plane sealed electrical feedthrough structure, which has the advantages of a single flange structure low-temperature electrical feedthrough such as a replaceable feedthrough line, no inner cavity requirements and easy installation in a compact space environment.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a pressure-bearing plane sealed electrical feedthrough structure, including a feedthrough line, a flange, a seal, a gasket, a clamping nut structure, a locking nut and a conductor, a feedthrough line is arranged through the middle of the flange, a conductor is arranged inside the feedthrough line, the right side of the flange is threadedly connected to the bolt part of the clamping nut structure, the outer side of the bolt part of the clamping nut structure is threadedly connected to the locking nut, a gasket is arranged between the inner side of the bolt part of the clamping nut structure and the feedthrough line, and a seal is installed between the feedthrough line and the flange.

[0007] The outer diameter of the locking nut is greater than the outer diameter of the nut in the compression nut structure, and is located at the inner side of the nut in the compression nut structure.

[0008] The outer end of the compression nut structure is a rotating nut.

[0009] The feed-through lines are distributed equilaterally on the flange.

[0010] The internal thread on the right side of the flange does not penetrate the flange.

[0011] The portion of the feed-through line located on the right side of the flange is arranged inside the bolt portion of the clamping nut structure.

[0012] The outer diameter of the portion of the feed-through line provided with the conductor is smaller than the outer diameter of the portion thereof penetrating the flange.

[0013] The outer diameter of the portion of the feedthrough wire that is close to the seal and the gasket is slightly larger than the outer diameter of the portion of the feedthrough wire that passes through the flange.

[0014] The bolt hole is arranged on the portion of the conductor located on the left side of the flange.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model has few overall components, reasonable and simplified structural relationships, and efficient and easy installation. The installation can be completed by tightening two nuts. The threaded connection between the clamping nut structure and the flange plays a pressure-bearing role, and the sealing effect is achieved through the clamping effect of the gasket and the seal. The feed-through line and the terminal block can be directly crimped or clamped, or connected by bolts, which meets different installation scenarios and saves installation space. The overall production and later maintenance are convenient, and it has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side cross-sectional schematic diagram of the utility model.

[0018] Figure 2 It is the right front view of the utility model.

[0019] Description of reference numerals:

[0020] 1 is a feed-through line, 2 is a flange, 3 is a seal, 4 is a gasket, 5 is a compression nut structure, 6 is a locking nut, 7 is a conductor, and 8 is a bolt hole. DETAILED DESCRIPTION

[0021] The utility model is now further described with reference to the accompanying drawings.

[0022] See also Figures 1-2 The utility model provides a pressure-bearing plane sealed electrical feedthrough structure, including a feedthrough line 1, a flange 2, a seal 3, a gasket 4, a clamping nut structure 5, a locking nut 6 and a conductor 7. The feedthrough line 1 is arranged through the middle of the flange 2, the conductor 7 is arranged inside the feedthrough line 1, the right side of the flange 2 is threadedly connected to the bolt part of the clamping nut structure 5, the outer side of the bolt part of the clamping nut structure 5 is threadedly connected to the locking nut 6, a gasket 4 is arranged between the inner side of the bolt part of the clamping nut structure 5 and the feedthrough line 1, and a seal 3 is installed between the feedthrough line 1 and the flange 2.

[0023] The outer diameter of the locking nut 6 is greater than the outer diameter of the nut in the compression nut structure 5 , and is located on the inner side of the nut in the compression nut structure 5 .

[0024] The outer end of the compression nut structure 5 is a rotating nut.

[0025] The feed-through lines 1 are distributed on the flange 2 in an equilateral shape.

[0026] The internal thread on the right side of the flange 2 does not penetrate the flange 2 .

[0027] The portion of the feed-through line 1 located on the right side of the flange 2 is arranged inside the bolt portion of the clamping nut structure 5 .

[0028] The outer diameter of the portion of the feed-through line 1 provided with the conductor 7 is smaller than the outer diameter of the portion thereof penetrating the flange 2 .

[0029] The outer diameter of the portion of the feed-through line 1 that is closely attached to the seal 3 and the gasket 4 is slightly larger than the outer diameter of the portion of the feed-through line 1 that passes through the flange 2 .

[0030] The bolt hole 8 is provided on the portion of the conductor 7 located on the left side of the flange 2 .

[0031] Working principle:

[0032] The utility model does not require excessive debugging, and the device is divided into the left and right sides of the flange 2, wherein the left side is the pressure side and requires a pressure-bearing design, and the right side is the air side and has no pressure requirement.

[0033] like Figure 1 As shown, when the conductor 7 in the feed-through line 1 is connected to the terminal, it can be directly crimped or clamped, or it can be connected by bolts to meet different installation scenarios.

[0034] By tightening the nut on the end side of the clamping nut structure 5, the bolt part of the clamping nut structure 5 cooperates with the internal thread of the flange 2 to generate a tightening force, and then the tightening force is converted into an axial force through the gasket 4 to compress the feed-through line 1, the seal 3 and the flange 2. The two planes of the seal 3 can block the flow of the media on the left and right sides through extrusion deformation, thereby playing a sealing role. After the clamping nut structure 5 is tightened in place, the lock nut 6 is tightened to complete the fixation.

[0035] The above are only preferred implementations of the present invention, which are only used to help understand the method and core ideas of the present application. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the idea of ​​the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0037] The utility model solves the problems in the prior art as a whole, such as the penetration piece is composed of two flanges, which requires more parts and has complicated installation steps and cannot meet the requirements of more installation scenarios. It achieves the functions of sealing and pressure bearing with fewer and more reasonable parts and their connection relationships, and the installation method is changeable and flexible, which saves installation space. It is overall convenient for production and later maintenance and has good application prospects.

Claims

1. A pressure-bearing plane sealed electrical feedthrough structure, characterized in that: The invention comprises a feedthrough line (1), a flange (2), a sealing member (3), a gasket (4), a clamping nut structure (5), a locking nut (6) and a conductor (7), wherein the feedthrough line (1) is provided through the middle of the flange (2), the conductor (7) is provided inside the feedthrough line (1), the right side of the flange (2) is connected to the bolt part of the clamping nut structure (5) by a thread, the outer side of the bolt part of the clamping nut structure (5) is connected to the locking nut (6) by a thread, the gasket (4) is provided between the inner side of the bolt part of the clamping nut structure (5) and the feedthrough line (1), and the sealing member (3) is installed between the feedthrough line (1) and the flange (2).

2. The pressure-bearing flat sealed electrical feedthrough structure according to claim 1, characterized in that: The outer diameter of the locking nut (6) is greater than the outer diameter of the nut in the compression nut structure (5), and is located on the inner side of the nut in the compression nut structure (5).

3. The pressure-bearing flat sealed electrical feedthrough structure according to claim 2, characterized in that: The outer end of the compression nut structure (5) is a rotating nut.

4. The pressure-bearing flat sealed electrical feedthrough structure according to claim 1, characterized in that: The feed-through lines (1) are distributed in an equilateral shape on the flange (2).

5. The pressure-bearing flat sealed electrical feedthrough structure according to claim 1, characterized in that: The internal thread on the right side of the flange (2) does not penetrate the flange (2).

6. The pressure-bearing flat sealed electrical feedthrough structure according to claim 1, characterized in that: The portion of the feedthrough line (1) located on the right side of the flange (2) is arranged inside the bolt portion of the clamping nut structure (5).

7. The pressure-bearing flat sealed electrical feedthrough structure according to claim 6, characterized in that: The outer diameter of the portion of the feedthrough line (1) provided with the conductor (7) is smaller than the outer diameter of the portion thereof penetrating the flange (2).

8. The pressure-bearing plane sealed electrical feedthrough structure according to claim 7, characterized in that: The outer diameter of the portion of the feedthrough line (1) that is closely attached to the sealing member (3) and the gasket (4) is slightly larger than the outer diameter of the portion of the feedthrough line (1) that passes through the flange (2).

9. The pressure-bearing flat sealed electrical feedthrough structure according to claim 1, characterized in that: A bolt hole (8) is provided on the portion of the conductor (7) located on the left side of the flange (2).

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