CN110792877A

CN110792877A - Leakage-proof flange cover and using method thereof

Info

Publication number: CN110792877A
Application number: CN201911094304.8A
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: 2020-02-14

Abstract

The leakage-proof flange cover comprises a plurality of cover bodies with the same shape and structure, wherein the cover bodies are spliced into a hollow cylinder with a through hole in the center, the cover bodies are also provided with a plurality of bolt holes, the number of the cover bodies is two, and the cover bodies are in a semicircular shape. The flange cover is simple in structure and ingenious in design, and the flange body is effectively isolated from the external connection by additionally arranging the flange cover on the existing flange body, so that the flange is prevented from being corroded and rusted, the service life is effectively prolonged, and the problem of water leakage is solved.

Description

Leakage-proof flange cover and using method thereof

Technical Field

The invention relates to the technical field of flange connection, in particular to a leakage-proof 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 ring flange can not bury in the underground for a long time for the ring flange of connecting the water pipe gets off for a long time, can frequently appear the condition of infiltration, also only wraps up the ring flange through the sticky tape during maintenance, can not solve the problem at all, and the cost of change is too big again, and is more complicated.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: overcomes the defects of the prior art and provides a leak-proof flange cover which can prevent corrosion and water leakage and a using method thereof.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a leak protection flange cover, includes the cover body that a plurality of shape structures are the same, a plurality of cover bodies splice into a cavity and the center has the cylinder of through-hole, still be equipped with the several bolt hole on the cover body.

Furthermore, the number of the cover bodies is two, and the cover bodies are in a semicircular ring shape.

Furthermore, the flange cover also comprises an independently arranged annular rubber gasket, and a plurality of through holes are formed in the gasket.

Furthermore, a sealing ring is arranged on the hollow side wall of the cover body.

Further, the total number of the bolt holes on the plurality of covers is eight.

Further, the contact surface of the cover body is a step surface which is matched with each other.

Further, the hollow height of the cover body is 6 cm-10 cm.

Further, the cover body is made of stainless steel.

The use method of the leakage-proof flange cover comprises the cover body, a gasket and a sealing ring, and comprises the following specific steps:

A. fixing a flange plate on a water pipe to be connected, wherein a sealing ring is arranged on the water pipe in a penetrating manner, a gasket is clamped between the flange plates, and a through hole on the gasket is aligned with a hole through which a bolt on the flange plate passes;

B. the sealing ring is sleeved around the flange plate, then the flange plate is integrally covered by two cover bodies from two sides of the flange plate, and bolt holes on the cover bodies are aligned with holes through which bolts on the flange plate penetrate;

C. and finally, connecting the screw rod with the nut after penetrating through the cover body, the flange plate and the gasket.

And further, in the step B, coating antirust paint on the hollow inner wall of the cover body.

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 schematic view of the present invention;

in the figure: 1-cover body, 11-bolt hole, 2-gasket, 21-perforation, 3-sealing washer.

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, a leak protection flange cover, includes the same cover body 1 of a plurality of shape structures, a plurality of cover bodies 1 splice into a cavity and the center has the cylinder of through-hole, the hollow height of the cover body 1 is 6cm ~10cm, still be equipped with several bolt hole 11 on the cover body 1, the bolt hole 11 total number on a plurality of cover bodies 1 is eight, and the cover body 1 quantity is two, and the cover body 1 is half-circular ring shape, the cover body 1 material is the stainless steel.

The flange cover further comprises an independently arranged annular rubber gasket 2, and a plurality of through holes 21 are formed in the gasket 2.

And a sealing ring 3 is also arranged on the hollow side wall of the cover body 1.

The use method of the leakage-proof flange cover comprises the cover body 1, the gasket 2 and the sealing ring 3, and comprises the following specific steps:

A. fixing a flange plate on a water pipe to be connected, penetrating a sealing ring 3 on the water pipe, clamping a gasket 2 between the flange plates, and aligning a through hole 21 on the gasket 2 with a hole through which a bolt on the flange plate passes;

B. the sealing ring 3 is sleeved around the flange plate, then the flange plate is integrally covered by two cover bodies 1 from two sides of the flange plate, and bolt holes 11 on the cover bodies 1 are aligned with holes through which bolts on the flange plate pass;

C. and finally, connecting the cover body 1, the flange plate and the gasket 2 with a nut by a screw rod.

And in the step B, the hollow inner wall of the cover body 1 is coated with antirust paint.

The working principle of the invention is as follows: the cover body 1 that the stainless steel made can effectively prevent the cover body 1 from rustting, the material is prior art, in fact can also be other materials, can also paint anti-rust paint, the cover body 1 can be through the bolt-up ring flange, two semicircular cover bodies 1 cover the ring flange is complete, the gasket 2 that is located in the middle of the ring flange effectively fills the space, prevent because the internal corrosion oxidation causes leaks, sealing washer 3 further increases sealed effect simultaneously, the bolt of connecting flange should pass the cover body 1, ring flange and gasket 2, cover body 1 side is the step face, it is not the plane, further improve sealed effect, not drawn in the picture.

Claims

1. The utility model provides a leak protection flange cover which characterized in that: the novel mask comprises a plurality of mask bodies (1) with the same shape and structure, wherein the mask bodies (1) are spliced into a hollow cylinder with a through hole in the center, and a plurality of bolt holes (11) are further formed in the mask body (1).

2. The leak-resistant flange cover of claim 1, wherein: the number of the cover bodies (1) is two, and the cover bodies (1) are semicircular.

3. The leak-resistant flange cover of claim 1, wherein: the flange cover further comprises an independently arranged annular rubber gasket (2), and a plurality of through holes (21) are formed in the gasket (2).

4. The leak-resistant flange cover of claim 1, wherein: and a sealing ring (3) is also arranged on the hollow side wall of the cover body (1).

5. The leak-resistant flange cover of claim 1, wherein: the total number of the bolt holes (11) on the plurality of cover bodies (1) is eight.

6. A leak-proof flange cover as claimed in any one of claims 1 to 5, wherein: the contact surface of the cover body (1) is a step surface which is mutually matched.

7. A leak-proof flange cover as claimed in any one of claims 1 to 5, wherein: the hollow height of the cover body (1) is 6 cm-10 cm.

8. A leak-proof flange cover as claimed in any one of claims 1 to 5, wherein: the cover body (1) is made of stainless steel.

9. The use method of the leakage-proof flange cover comprises the cover body (1), the gasket (2) and the sealing ring (3), and is characterized by comprising the following specific steps:

A. fixing the flange plates on water pipes to be connected, penetrating a sealing ring (3) on the water pipes, clamping a gasket (2) between the flange plates, and aligning through holes (21) on the gasket (2) with holes through which bolts on the flange plates penetrate;

B. the sealing ring (3) is sleeved around the flange plate, then the flange plate is integrally covered from two sides of the flange plate by two cover bodies (1), and bolt holes (11) on the cover bodies (1) are aligned with holes through which bolts on the flange plate penetrate;

C. and finally, the screw rod penetrates through the cover body (1), the flange plate and the gasket (2) to be connected with the screw cap.

10. The method of using a leak-proof flange cover as defined in claim 9, wherein: and in the step B, the hollow inner wall of the cover body (1) is coated with antirust paint.