CN110822216A

CN110822216A - Flange cover and using method thereof

Info

Publication number: CN110822216A
Application number: CN201911093970.XA
Authority: CN
Inventors: 谭俊
Original assignee: Hunan Tianxingjian Energy Management Co Ltd
Current assignee: Hunan Tianxingjian Energy Management Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-02-21

Abstract

The invention discloses a flange cover and a use method thereof, belonging to the technical field of flange connection, wherein the flange cover comprises a plurality of cover bodies with the same shape and structure, the vertical section of a single cover body is in a shape of '21274', the plurality of cover bodies are spliced into a hollow cylinder with a through hole in the middle, the number of the cover bodies is two, and the horizontal section of the cover bodies is in a semicircular shape.

Description

Flange cover and using method thereof

Technical Field

The invention relates to the technical field of flange connection, in particular to a flange cover and a using method thereof.

Background

Flange connection is a detachable joint which is formed by fixing two pipelines, pipe fittings or equipment on a flange respectively, then adding a flange pad between the two flanges, and finally tightening the two flanges by bolts to tightly combine the two flanges.

Flange connection is an important connection mode for pipeline construction, and flange types are divided into a threaded flange, a welding flange and a loose flange according to the fixing mode of the flange and a pipeline; according to the sealed face form, can divide into smooth sliding type, unsmooth formula, tongue-and-groove formula, lens formula and trapezoidal slot type, general low pressure minor diameter is with the screw flange, high pressure and low pressure major diameter are with welding flange, the thickness and the connecting bolt diameter and the quantity of the ring flange of different pressure are different, according to the different grades of pressure, the flange pad also has different materials, all have from low pressure asbestos pad, high pressure asbestos pad and tetrafluoro pad to the metal pad, flange joint convenient to use can bear great pressure, in industrial pipeline, flange joint's use is very extensive, for example in indoor fire hydrant water supply system, the connection of all kinds of valves and pipelines such as butterfly valve, gate valve, check valve.

At present, the flange plate is exposed outside and easy to rust, particularly for underground water heating engineering, a water pipe which is embedded underground is long, flanges are inevitably needed to be connected, the flanges are easy to rust, the service time is short, and replacement and maintenance are complex.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, and the corrosion-resistant flange cover and the using method thereof are provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a flange cover, which comprises a plurality of cover bodies with the same shape and structure, wherein the vertical section of a single cover body is in a shape of '21274', the plurality of cover bodies are spliced into a hollow cylinder with a through hole in the middle, and the flange cover is used for covering an existing flange plate and covering the existing flange plate from the side surface of the flange plate.

Further, the number of the cover bodies is two, the horizontal cross section of each cover body is in a semicircular shape, only two cover bodies are provided, the number of the cover bodies is optimal, the semicircular shape is half of a circular ring, and the specific vertical cross section and the horizontal cross section can be understood according to the attached drawings.

Furthermore, the hollow height of the cover body is 8 cm-14 cm, and the thickness of the flange plate and the protruding part of the bolt are added.

Furthermore, the flange cover further comprises a semicircular annular gasket which is independently arranged, a plurality of hexagonal prism-shaped bolt clamping holes are formed in the gasket, eight bolts are arranged on a common flange plate, therefore, four bolt clamping holes are preferably formed in one gasket, and protruding bolts are arranged in the bolt clamping holes in the flange plate, so that the bolts and the gasket form a complete circle, and the flange plate is effectively isolated from external contact.

Further, the gasket is of a rubber material, is cheap and resistant to corrosion.

Further, the cover body is made of plastic, glass or rubber materials and conventional materials.

Furthermore, the two sides of the flange cover are provided with mutually matched step surfaces, so that the sealing effect is better.

Furthermore, staggered rings or fixing nuts are fixedly arranged on two sides of the flange cover and used for fixing the flange cover.

A use method of a flange cover comprises the cover body and a gasket, and comprises the following specific steps:

A. gaskets are arranged on two sides of the flange plate which is fixed by the bolts in a cushioning mode, so that the gaskets and the bolts protruding from the flange plate form a complete circle;

B. covering the flange plate and the gasket by the two cover bodies from the side surfaces, and splicing the two cover bodies into a complete cylinder;

C. and finally, two rods or screws penetrate through the circular rings or the fixing nuts on the two sides of the cover body to fix the two cover bodies.

Further, in the step A, antirust paint is coated on the flange plate, the gasket and the bolt.

The invention has the beneficial effects that: the flange cover is additionally arranged on the existing flange body, so that the flange body is effectively isolated from the external connection, the flange is prevented from being corroded and rusted, the service life is effectively prolonged, and the problem of water leakage is solved.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a perspective view of the cover;

in the figure: the method comprises the following steps of 1-a cover body, 11-a fixing nut, 2-a gasket and 21-a bolt clamping hole.

Detailed Description

In the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the figures, merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "over" a second feature may be directly or diagonally over the first feature or may simply mean that the first feature is at a higher level than the second feature. A first feature "under" a second feature may be that the first feature is directly under or obliquely under the second feature, or simply that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the terms "embodiment," "specific embodiment," "example" or "specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring to fig. 1-2, the flange cover comprises a plurality of cover bodies 1 with the same shape and structure, wherein the vertical section of each cover body 1 is in a shape of '21274', the cover bodies 1 are spliced into a hollow cylinder with a through hole in the middle, the flange cover is used for covering an existing flange plate and covering the flange plate from the side surface of the flange plate, the number of the cover bodies 1 is two, the horizontal section of each cover body 1 is in a semicircular shape, only two cover bodies are provided, the number of the cover bodies is the optimal, the semicircular shape is half of a circular ring, and the specific vertical section and the horizontal section can be understood according to the attached drawings. The hollow height of the cover body 1 is 8 cm-14 cm, and the thickness of the flange plate and the protruding part of the bolt are added. The cover body 1 is made of plastic, glass or rubber materials, and the two sides of the flange cover are provided with mutually matched step surfaces, so that the sealing effect is better; staggered circular rings or fixing screw caps 11 are fixedly arranged on two sides of the flange cover and used for fixing the flange cover.

The flange cover further comprises a semicircular annular gasket 2 which is independently arranged, a plurality of hexagonal prism-shaped bolt clamping holes 21 are formed in the gasket 2, eight bolts are arranged on a common flange plate, so that the gasket 2 is preferably provided with the four bolt clamping holes 21, and the convex bolts arranged on the flange plate are arranged in the bolt clamping holes 21, so that the bolts and the gasket 2 form a complete circle, the flange plate is effectively isolated from the outside, and the gasket 2 is made of rubber materials, is cheap and is corrosion-resistant.

A method for using a flange cover comprises a cover body 1 and a gasket 2, and comprises the following specific steps:

A. the gasket 2 is arranged on two sides of the flange plate which is fixed by the bolt in a cushioning mode, so that the gasket 2 and the bolt protruding from the flange plate form a complete circle;

B. covering the flange plate and the gasket 2 by the two cover bodies 1 from the side surfaces, and splicing the two cover bodies 1 into a complete cylinder;

C. and finally, two rods or screws penetrate through the circular rings or the fixing nuts 11 on the two sides of the cover body 1 to fix the two cover bodies 1.

And in the step A, the flange plate, the gasket 2 and the bolt are coated with antirust paint.

The working principle of the invention is as follows: two this annular cover bodies 1 are connected through crisscross rings or fixing nuts 11, and the convex part of bolt on the ring flange is filled just to gasket 2, effectively isolated air prevents that the ring flange from rustting.

The step surface and the circular ring are not drawn in the figure, and the person skilled in the art can understand the steps according to common knowledge.

Claims

1. A flange cover, its characterized in that: the novel shielding cover comprises a plurality of shielding bodies (1) with the same shape and structure, wherein the vertical section of the single shielding body (1) is in a shape of '21274', and the shielding bodies (1) are spliced into a hollow cylinder with a through hole in the middle.

2. A flange cover according to claim 1, wherein: the number of the cover bodies (1) is two, and the horizontal sectional view of the cover bodies (1) is semicircular.

3. A flange cover according to claim 1, wherein: the hollow height of the cover body (1) is 8 cm-14 cm.

4. A flange cover according to claim 1, wherein: the flange cover further comprises a semicircular annular gasket (2) which is independently arranged, and a plurality of hexagonal prism-shaped bolt clamping holes (21) are formed in the gasket (2).

5. A flange cover according to claim 4, wherein: the gasket (2) is made of rubber materials.

6. A flange cover according to any one of claims 1 to 5, wherein: the cover body (1) is made of plastic, glass or rubber materials.

7. A flange cover according to any one of claims 1 to 5, wherein: and step surfaces matched with each other are arranged on two sides of the flange cover.

8. A flange cover according to any one of claims 1 to 5, wherein: staggered circular rings or fixing screw caps (11) are fixedly arranged on two sides of the flange cover.

9. The use method of the flange cover comprises the cover body (1) and the gasket (2), and is characterized by comprising the following specific steps:

A. gaskets (2) are arranged on two sides of the flange plate which is fixed by the bolts in a cushioning mode, so that the gaskets (2) and the bolts protruding from the flange plate form a complete circle;

B. covering the flange plate and the gasket (2) by the two cover bodies (1) from the side surfaces, and splicing the two cover bodies (1) into a complete cylinder;

C. and finally, two rods or screws penetrate through the circular rings or the fixing nuts (11) on the two sides of the cover body (1) to fix the two cover bodies (1).

10. A method of using a flange cover according to claim 9, wherein: and in the step A, the flange plate, the gasket (2) and the bolt are coated with antirust paint.