CN219692255U

CN219692255U - Nitrogen sealing structure

Info

Publication number: CN219692255U
Application number: CN202321256449.5U
Authority: CN
Inventors: 张欣
Original assignee: Wuxi Hengda Aquatic Equipment Co ltd
Current assignee: Wuxi Hengda Aquatic Equipment Co ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2023-09-15
Anticipated expiration: 2033-05-22

Abstract

The utility model discloses a nitrogen sealing structure, which is suitable for the sealing field of equipment such as a tower, a tank and the like. Through the flange ring I that sets up, flange ring two and annular gasket three parts just can constitute nitrogen gas seal structure, and nitrogen gas seal structure is simple, and the part of constitution is less, and the installation operation is more convenient.

Description

Nitrogen sealing structure

Technical Field

The utility model relates to the field of sealing of equipment such as towers, tanks and the like, in particular to a nitrogen sealing structure.

Background

The chemical waste gas is toxic and harmful gas exhausted from chemical plants in chemical production, and often contains various pollutant species, has complex physical and chemical properties and different toxicity, seriously pollutes the environment and affects the health of human bodies, and the chemical waste gas components produced in different chemical production industries have great differences. Because the toxic gas content in the chemical waste gas is more, and the composition components are not clear, the connecting piece at the connecting pipeline is required to have good corrosion resistance and good sealing performance at the same time when the waste gas is treated later, and the environmental pollution and the human injury caused by the leakage of the chemical waste gas are prevented.

The prior art discloses an isolation buffer nitrogen sealing manhole, and patent number 201520080342.9, the content of which discloses that the top of a neck butt welding flange is provided with an inner sealing surface and an outer sealing surface, the inner sealing surface of the neck butt welding flange is provided with a groove, a metal tooth-shaped gasket is arranged in the groove, and the metal tooth-shaped gasket is a main sealing gasket; the outer sealing surface of the butt welding flange with the neck is provided with a mortise, and an O-shaped sealing ring is arranged in the mortise to be auxiliary sealing; bolt holes are formed in the left end and the right end of the butt welding flange with the neck; the bottom of the flange cover is provided with a bulge matched with a groove on the inner sealing surface and a mortise on the outer sealing surface of the neck butt welding flange; the right end of the flange cover is provided with a nitrogen inlet, and the left end of the flange cover is provided with a nitrogen outlet.

However, the technical scheme has the following technical problems:

the existing nitrogen sealing manhole structure needs to ensure the sealing specific pressure of the main sealing metal tooth-shaped gasket through the metal tooth-shaped gasket arranged on the inner sealing surface, and is assisted by the O-shaped sealing ring arranged on the outer sealing surface, and finally, bolts around the manhole are screwed down to realize nitrogen sealing.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a nitrogen sealing structure which has the advantages of fewer used components and convenient installation and operation on the premise of ensuring the effect of nitrogen sealing.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a nitrogen gas seal structure, including nitrogen gas seal structure body, nitrogen gas seal structure body includes flange ring one, flange ring two and cyclic annular gasket, cyclic annular gasket sets up between flange ring one and flange ring two, flange ring one is provided with nitrogen gas entry first, nitrogen gas export first and cyclic annular recess first, and nitrogen gas entry first and nitrogen gas export are linked together with cyclic annular recess first respectively, flange ring two is provided with cyclic annular recess second and spacing ring, cyclic annular recess second and cyclic annular recess first the same size and set up along nitrogen gas seal structure body central axis symmetry, the spacing ring sets up in the top of cyclic annular recess second, cyclic annular gasket sets up in the below of spacing ring, spacing ring spacing cyclic annular gasket, cyclic annular gasket seals cyclic annular recess first and cyclic annular recess second respectively.

Through adopting above-mentioned technical scheme, annular gasket seals the annular groove of flange ring one and the annular groove of flange ring two respectively two to spacing annular gasket of spacing ring quick accuracy makes under the sealed effect's of nitrogen gas seal structure body assurance prerequisite, uses less part, realizes the swift installation operation of nitrogen gas seal structure body.

Further, the first nitrogen outlet and the first nitrogen inlet have the same structure and are symmetrically arranged by the central axis of the first flange ring.

Further, the second flange ring is provided with a second nitrogen inlet and a second nitrogen outlet, the second nitrogen inlet and the second nitrogen outlet are respectively communicated with the annular groove, the second nitrogen outlet and the second nitrogen inlet are identical in structure, and the second flange ring is symmetrically arranged by the central axis of the second flange ring.

Further, the first nitrogen inlet and the first nitrogen outlet are arranged on the outer circular surface of the first flange ring, and the second nitrogen inlet and the second nitrogen outlet are arranged on the outer circular surface of the second flange ring.

Further, the first nitrogen inlet and the second nitrogen inlet are arranged on the same circular tangent line on the outer circular surface of the nitrogen sealing structure body, and the first nitrogen outlet and the second nitrogen outlet are arranged on the same circular tangent line on the outer circular surface of the nitrogen sealing structure body.

By adopting the technical scheme, the nitrogen sealing structure is convenient for filling or discharging nitrogen.

Further, the first flange ring is provided with threaded holes, the threaded holes are arranged on the side face of the first flange ring at intervals, the second flange ring is also provided with threaded holes, the threaded holes are arranged on the side face of the second flange ring at intervals, and the threaded holes are arranged on the side face of the first flange ring at intervals and correspond to the threaded holes one by one.

Further, the annular gasket is made of elastic rubber materials.

In summary, the utility model has the following beneficial effects:

the first annular groove and the second annular groove are formed in the first flange ring, the first annular groove and the second annular groove are respectively sealed by the annular gasket, nitrogen is filled into the first annular groove and the second annular groove through the nitrogen inlet and the nitrogen outlet, so that the nitrogen sealing effect is guaranteed, the first flange ring is used in the nitrogen sealing structure, the second flange ring and the third annular gasket can be used for completing the nitrogen sealing, the lower parts are used on the premise that the sealing effect is guaranteed by the nitrogen sealing structure body, and meanwhile the limiting ring arranged by the second flange ring can be used for limiting the annular gasket rapidly and accurately, so that the installation operation of the nitrogen sealing structure body is more convenient.

Drawings

FIG. 1 is a schematic view of the structure of a nitrogen seal structure body;

FIG. 2 is a cross-sectional view of the nitrogen seal body;

FIG. 3 is a schematic view of a flange ring one;

FIG. 4 is a schematic structural view of a second flange ring;

fig. 5 is a schematic structural view of the annular gasket.

In the figure, 1, a first flange ring; 2. a flange ring II; 3. an annular gasket; 4. a threaded hole; 5. a first nitrogen inlet; 6. a first nitrogen outlet; 7. annular groove I; 8. nitrogen inlet II; 9. a second nitrogen outlet; 10. annular grooves II; 11. and a limiting ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the following more detailed description of the device according to the present utility model is given with reference to the accompanying drawings and the detailed description. The advantages and features of the present utility model will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the utility model. For a better understanding of the utility model with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or essential characteristics thereof.

Examples:

the utility model provides a nitrogen gas seal structure, as shown in fig. 1, includes nitrogen gas seal structure body, and nitrogen gas seal structure body includes flange ring 1, flange ring 2 and cyclic annular gasket 3, and cyclic annular gasket 3 sets up between flange ring 1 and flange ring 2, and the three passes through bolt fixed connection.

Specifically, as shown in fig. 2 and 3, the flange ring 1 includes a screw hole 4, a nitrogen inlet 5, a nitrogen outlet 6 and an annular groove 7. The threaded holes 4 are arranged on the side face of the first flange ring 1 at intervals, and the first nitrogen inlet 5 is arranged on the outer circular face of the first flange ring 1 and communicated with the first annular groove 7. The nitrogen outlet I6 is arranged on the outer circular surface of the flange ring I1 and is communicated with the annular groove I7. The first nitrogen outlet 6 and the first nitrogen inlet 5 have the same structure and are symmetrically arranged by the central axis of the first flange ring 1. The annular groove 7 is arranged on the lower side of the threaded hole 4 arranged on one side of the flange ring 1.

Specifically, as shown in fig. 2 and 4, the second flange ring 2 includes a threaded hole 4, a second nitrogen inlet 8, a second nitrogen outlet 9, a second annular groove 10 and a limiting ring 11. The threaded holes 4 are arranged on the side surface of the flange ring two 2 at intervals and correspond to the threaded holes 4 arranged on the side surface of the flange ring one 1 at intervals one by one. The second nitrogen inlet 8 is arranged on the outer circular surface of the second flange ring 2 and is communicated with the second annular groove 10. The second nitrogen outlet 9 is arranged on the outer circular surface of the second flange ring 2 and is communicated with the second annular groove 10. The second nitrogen outlet 9 and the second nitrogen inlet 8 have the same structure and are symmetrically arranged by the central axis of the second flange ring 2. The annular groove II 10 is arranged on the lower side of the threaded hole 4 arranged on one side surface of the flange ring II 2. The annular groove I7 and the annular groove II 10 are identical in size and are symmetrically arranged along the central axis of the nitrogen sealing structure body. The limiting ring 11 is arranged above the annular groove II 10 and below the threaded hole 4.

Specifically, as shown in fig. 2, the first nitrogen inlet 5 and the second nitrogen inlet 8 are arranged on the same circular tangent line on the outer circular surface of the nitrogen sealing structure body, so that the nitrogen sealing structure body can conveniently charge nitrogen at the same position through the first nitrogen inlet 5 and the second nitrogen inlet 8. Similarly, the first nitrogen outlet 6 and the second nitrogen outlet 9 are also arranged on the same circular tangent line on the outer circular surface of the nitrogen sealing structure body, so that nitrogen is discharged through the first nitrogen outlet 6 and the second nitrogen outlet 9 when the sealing structure body is unlocked.

Specifically, as shown in fig. 2 and 5, the annular gasket 3 is made of elastic rubber material, the annular gasket 3 is arranged on the inner side of the limiting ring 11, the limiting ring 11 limits the annular gasket 3, the annular gasket 3 is limited by the limiting ring 11, the annular gasket 3 is limited below the annular limiting block rapidly and accurately, and meanwhile, the annular gasket 3 in the nitrogen sealing structure body is more convenient to install.

Specifically, as shown in fig. 2, the side surface of the first annular groove 7 of the first flange ring 1 is in butt joint with the side surface of the second annular groove 10 of the second flange ring 2, and the annular gaskets 3 arranged at the middle positions of the first annular groove 7 and the second annular groove 10 can be tightly pressed and fixed, and the annular gaskets 3 respectively seal the first annular groove 7 and the second annular groove 10 to form a nitrogen channel.

Working principle:

when the nitrogen sealing structure is used, the annular gasket 3 is placed on the inner side of the limiting ring 11 in the flange ring II 2, the flange ring I1 is in butt joint with the flange ring II 2, the threaded holes 4 corresponding to the flange ring I1 and the flange ring II 2 one by one are locked and fixed through bolts, the annular gasket 3 is used for respectively sealing the annular groove I7 and the annular groove II 10 to form a nitrogen channel, nitrogen is filled in through the nitrogen inlet I5 and the nitrogen inlet II 8, air is discharged through the nitrogen outlet I6 and the nitrogen outlet II 9, and nitrogen filling of the nitrogen sealing structure body is completed.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a nitrogen gas seal structure, includes nitrogen gas seal structure body, its characterized in that, nitrogen gas seal structure body includes flange ring one (1), flange ring two (2) and cyclic annular gasket (3), cyclic annular gasket (3) set up flange ring one (1) with between flange ring two (2), flange ring one (1) is provided with nitrogen gas entry one (5), nitrogen gas export one (6) and cyclic annular recess one (7), just nitrogen gas entry one (5) with nitrogen gas export one (6) respectively with cyclic annular recess one (7) are linked together, flange ring two (2) are provided with cyclic annular recess two (10) and spacing ring (11), cyclic annular recess two (10) with cyclic annular recess one (7) size is the same and follow nitrogen gas seal structure body central axis symmetry sets up, spacing ring (11) set up the top of cyclic annular recess two (10), cyclic annular gasket (3) set up spacing ring (11) are spacing, cyclic annular gasket (3) and cyclic annular gasket (10) are spacing respectively.

2. The nitrogen sealing structure according to claim 1, wherein the nitrogen outlet (6) and the nitrogen inlet (5) are identical in structure and are symmetrically arranged with respect to the central axis of the flange ring (1).

3. The nitrogen sealing structure according to claim 2, wherein the second flange ring (2) is provided with a second nitrogen inlet (8) and a second nitrogen outlet (9), the second nitrogen inlet (8) and the second nitrogen outlet (9) are respectively communicated with the second annular groove (10), and the second nitrogen outlet (9) and the second nitrogen inlet (8) have the same structure and are symmetrically arranged with the central axis of the second flange ring (2).

4. A nitrogen gas seal according to claim 3, wherein the first nitrogen gas inlet (5) and the first nitrogen gas outlet (6) are provided on the outer circumferential surface of the first flange ring (1), and the second nitrogen gas inlet (8) and the second nitrogen gas outlet (9) are provided on the outer circumferential surface of the second flange ring (2).

5. The nitrogen seal structure according to claim 4, wherein the first nitrogen inlet (5) and the second nitrogen inlet (8) are arranged on the same tangent line on the outer circumferential surface of the nitrogen seal structure body, and the first nitrogen outlet (6) and the second nitrogen outlet (9) are arranged on the same tangent line on the outer circumferential surface of the nitrogen seal structure body.

6. The nitrogen gas seal structure according to claim 5, wherein the first flange ring (1) is provided with screw holes (4), the screw holes (4) are arranged on the side surface of the first flange ring (1) at intervals, the second flange ring (2) is also provided with the screw holes (4), and the screw holes (4) are arranged on the side surface of the second flange ring (2) at intervals and correspond to the screw holes (4) arranged on the side surface of the first flange ring (1) at intervals one by one.

7. Nitrogen sealing arrangement according to claim 6, characterized in that the annular gasket (3) is made of an elastic rubber material.