Gas electricity insulation adapter

Abstract

The utility model discloses a gas electric insulation adapter, which comprises a protective sleeve (1), an inner wire (2) and an outer wire (3), the inner wire (2) and the outer wire (3) are arranged in the protective sleeve (1), an inner ring (4) is arranged at one end of the outer wire (3) in the protective sleeve (1), an annular plate (5) is arranged at one end of the inner wire (2) in the protective sleeve (1), and a sealing ring (6) is arranged between the inner ring (4) and the inner wire (2). The sealing ring (6) is located on the side, away from the protective sleeve (1), of the annular plate (5), gas is separated from the protective sleeve (1) through the arrangement of the inner thread (2) and the outer thread (3), the protective sleeve (1) is not in contact with the gas, the sealing ring (6) is additionally arranged between the inner thread (2) and the outer thread (3), sealing is not affected even if the protective sleeve (1) located on the outermost side cracks, and due to the fact that the inner thread (2) and the outer thread (3) are separated by the sealing ring (6), the sealing effect is good. Mutual conduction is avoided; and dangerous conditions are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas pipelines, and specifically relates to a gas electrical isolation conversion joint. Background Art

[0002] Since different parts of gas pipelines have different models, gas joints are usually required when connecting adjacent parts to ensure the sealing and safety of the connection.

[0003] Patent No. 201521076207.3, a public specification published on May 4, 2016, discloses a gas connector, including a gas connector body, wherein the two ends of the gas connector body respectively correspond to a first connecting thread and a second connecting thread, and the outer surface of the gas connector body between the first connecting thread and the second connecting thread has a hexagon, characterized in that the end surface of the hexagon close to the second connecting thread has an annular groove for accommodating a sealing ring, and the depth extension direction of the annular groove is along the axial direction of the gas connector body, the sealing reliability of the two ends of the gas connector body is high, the cleanliness of the transported gas can be improved, the structure is simple, and it is easy to operate.

[0004] In the above-mentioned prior art, the insulating joint structure uses the plastic part as the sealing surface. Due to the different thermal expansion and contraction ratios of plastic and metal, a gap may be generated at the junction of metal and plastic, which may cause direct leakage of gas. Utility Model Content

[0005] The utility model aims to

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a gas-electrically isolated conversion joint, comprising a protective sleeve and an inner thread and an outer thread arranged in the protective sleeve, the outer thread having an inner ring at one end located in the protective sleeve, the inner thread having a ring plate at one end located in the protective sleeve, a sealing ring between the inner ring and the inner thread, and the sealing ring located on the side of the ring plate away from the protective sleeve.

[0007] The protective cover is circular or in other shapes.

[0008] The protective sleeve is provided with annularly arranged grooves.

[0009] Both ends of the protective sleeve are provided with chamfers.

[0010] One end of the inner thread located outside the protective sleeve is a hexagonal surface.

[0011] The sealing ring is made of non-metallic material, such as fluororubber, nitrile rubber, etc.

[0012] The protective cover is a flame retardant PE plastic shell.

[0013] The technical effect of the utility model is as follows: by setting the inner thread and the outer thread, the gas is separated from the protective sleeve, the protective sleeve does not contact the gas, and a sealing ring is added between the inner thread and the outer thread, so that during use, cracks appear on the outermost protective sleeve and the sealing is not affected; at the same time, because the installation hexagonal surface is made on the inner thread, the size is smaller, and the tools required for installing the hexagonal surface are smaller and more convenient to carry, which is convenient for maintenance personnel to perform on-site maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] This specification includes the following drawings, which show the following contents:

[0015] Figure 1 This is a structural schematic diagram of a gas-electrically isolated conversion joint of the utility model;

[0016] Figure 2 for Figure 1 A schematic cross-sectional view of a protective cover of a gas-electrically isolated conversion joint.

[0017] The markings in the figure are: 1. protective cover; 2. inner thread; 3. outer thread; 4. inner ring; 5. ring plate; 6. sealing ring; 7. groove. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation methods of the utility model by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the utility model and facilitating its implementation.

[0019] See also Figure 1-2 A gas-electrically isolated conversion joint comprises a protective sleeve 1 and an inner thread 2 and an outer thread 3 arranged in the protective sleeve 1, an inner ring 4 is arranged at one end of the outer thread 3 located in the protective sleeve 1, a ring plate 5 is arranged at one end of the inner thread 2 located in the protective sleeve 1, a sealing ring 6 is arranged between the inner ring 4 and the inner thread 2, and the sealing ring 6 is located on the side of the ring plate 5 away from the protective sleeve 1.

[0020] By setting the inner thread 2 and the outer thread 3, the gas is separated from the protective sleeve 1, the protective sleeve 1 does not contact the gas, and a sealing ring 6 is added between the inner thread 2 and the outer thread 3, so that during use, even if cracks appear on the outermost protective sleeve 1, it will not affect the seal. Moreover, since the inner thread 2 and the outer thread 3 are separated by the sealing ring 6 and are not connected to each other, electrical conductivity will not occur, thereby reducing the occurrence of dangerous situations.

[0021] The protective cover 1 is circular or in other shapes; the circular protective cover 1 can effectively improve the pressure resistance of the protective cover 1 .

[0022] The protective cover 1 is provided with annular grooves 7 ; by adding the cutting grooves 7 , the stress of the protective cover 1 is reduced.

[0023] Both ends of the protective cover 1 are provided with chamfers to reduce the possibility of damage and cracking of both ends of the protective cover 1.

[0024] One end of the inner thread 2 outside the protective cover 1 is a hexagonal surface; compared with making the protective cover 1 into a hexagonal shape, the diameter of the inner thread 2 is smaller, so the corresponding wrench is smaller and more convenient for maintenance personnel to carry, which is convenient for daily maintenance.

[0025] The sealing ring 6 is made of non-metallic material, such as fluororubber, nitrile rubber, etc.; fluororubber has good corrosion resistance and high temperature resistance, and can effectively protect the gas pipe for a long time. Non-metallic materials can effectively avoid electrical conductivity.

[0026] The protective cover 1 is a flame-retardant PE plastic shell to avoid dangerous situations such as combustion when gas leaks.

[0027] The technical effect of the utility model is as follows: by setting the inner thread 2 and the outer thread 3, the gas is separated from the protective sleeve 1, the protective sleeve 1 does not contact the gas, and a sealing ring 6 is added between the inner thread 2 and the outer thread 3, so that during use, cracks appear on the outermost protective sleeve 1 and do not affect the sealing; at the same time, since the installation hexagonal surface is made on the inner thread 2, the size is smaller, and the tools required for installing the hexagonal surface are smaller and more convenient to carry, which is convenient for maintenance personnel to perform on-site maintenance.

[0028] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A gas-electrically-isolating conversion joint, comprising a protective sleeve (1) and an inner thread (2) and an outer thread (3) arranged in the protective sleeve (1), characterized in that: An inner ring (4) is provided at one end of the outer thread (3) located inside the protective sleeve (1), a ring plate (5) is provided at one end of the inner thread (2) located inside the protective sleeve (1), a sealing ring (6) is provided between the inner ring (4) and the inner thread (2), and the sealing ring (6) is located on a side of the ring plate (5) away from the protective sleeve (1).

2. A gas electrical isolation conversion joint according to claim 1, characterized in that: The protective cover (1) is circular.

3. A gas-electrically isolated conversion joint according to claim 1 or 2, characterized in that: The protective sleeve (1) is provided with grooves (7) arranged in an annular shape.

4. A gas-electrically isolated conversion joint according to claim 3, characterized in that: Both ends of the protective sleeve (1) are provided with chamfers.

5. A gas-electrically isolated conversion joint according to claim 1, characterized in that: One end of the inner thread (2) located outside the protective sleeve (1) is a hexagonal surface.

6. A gas-electrically isolated conversion joint according to claim 1, characterized in that: The sealing ring (6) is made of fluororubber.

7. A gas-electrically isolated conversion joint according to claim 1, 2 or 4, characterized in that: The protective cover (1) is a flame-retardant PE plastic shell.

Images