CN215294114U

CN215294114U - Flange blind plate and flange gasket matched with same

Info

Publication number: CN215294114U
Application number: CN202023348489.1U
Authority: CN
Inventors: 鲍元飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-12-24
Anticipated expiration: 2030-12-31

Abstract

The application discloses flange blind plate and flange washer that this flange blind plate demolishs supporting use of back. The flange blind plate comprises a blind plate body, at least two extending parts and at least one through hole, wherein the at least two extending parts are arranged on the blind plate body and extend outwards, and the at least one through hole is arranged on the extending parts. The application solves the technical problems that the blind plate is unstable, unsafe and not tight when the blind plate is blocked with air and is drawn out, and the blind plate is not convenient to install and draw.

Description

Flange blind plate and flange gasket matched with same

Technical Field

The application relates to the field of pipeline connection and maintenance, in particular to a flange blind plate and a flange gasket matched with the flange blind plate for use.

Background

In the industries of chemical industry, town gas, metallurgy and the like, the pipeline connection or maintenance with gas is inevitable work. In view of the continuous production requirement or the condition that the downstream user can not supply gas, the blind plate plugging and extracting operation with gas (coal gas or natural gas) becomes necessary.

At present, the high-pressure blind plate is commonly used with a non-porous through-diameter pad, an 8-shaped blind plate and the like. However, the non-porous through pad and the 8-shaped blind plate are not provided with matched bolt holes, so that the mounting stability and the tightness are influenced; the 8-shaped blind plate integrates the gasket with the blind plate, but for operation and maintenance, the convex gasket influences the operation of personnel.

Aiming at the problems of instability, insecurity and incompactness of the blind plate and inconvenient installation and extraction of the blind plate during plugging with air and extracting the blind plate in the related technology, an effective solution is not provided at present.

Disclosure of Invention

The main aim at of this application provides a flange blind flange and supporting flange packing ring who uses to the blind flange's when solving the shutoff of taking gas and taking out the blind flange unstability, it is unsafe, not tight and blind flange installation and extraction inconvenient problem.

In order to achieve the above object, according to one aspect of the present application, a flange blank is provided.

A flange blind according to the application includes: the blind plate comprises a blind plate body, at least two extending parts and at least one through hole, wherein the at least two extending parts are arranged on the blind plate body and extend outwards, and the at least one through hole is arranged on the extending parts.

Further, the blind plate body is a circular plate.

Furthermore, the number of the extending parts is two, and the intersection angle of the two extending parts and the center connecting line of the blind plate body is 90 degrees.

Furthermore, the upper surface and the lower surface of the blind plate body are provided with at least one annular groove for installing a sealing rubber ring.

Further, the number of the through holes provided in one of the extension portions is two.

Furthermore, the diameter of the through hole close to the center of the blind plate body is the same as that of the bolt hole of the matched flange, and the through hole and the bolt hole of the corresponding flange are arranged in the same circumference.

Furthermore, the through hole far away from the center of the blind plate body is matched with auxiliary hoisting equipment.

Furthermore, the blind plate body is made of a metal plate.

Furthermore, a circular hole with the diameter the same as that of the inner hole of the matched flange is formed in the center of the blind plate body and serves as a flange gasket used after the flange blind plate is drawn out.

A flange gasket, comprising: any one of the flange blind flanges.

In the embodiment of the application, a mode that the extending part is extended outwards by the blind plate is adopted, through the through holes with the same diameter as the bolt holes of the matched flange and the through holes matched with the auxiliary hoisting equipment are formed in the extending part, the purposes that the blind plate is tightly connected with the matched flange and can be hoisted by the auxiliary hoisting equipment are achieved, and therefore the technical effects of good tightness of the blind plate and portable installation and extraction are achieved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a front view of a blind flange according to an embodiment of the present application;

FIG. 2 is a front view of a flange gasket having a central through bore in accordance with an embodiment of the present application;

reference numerals

1. The blind plate comprises a blind plate body 2, an extension part 3 and a through hole; 4. an annular groove; 5. a circular hole.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, the present application relates to a flange blank, comprising: the blind plate comprises a blind plate body 1, at least two extending parts 2 which are arranged on the blind plate body 1 and extend outwards, and at least one through hole 3 which is arranged on the extending parts 2.

Specifically, the blind plate body 1 is a circular plate and is made of a metal plate, and the production process of the blind plate body 1 generally includes four types: forging, casting and forging, cutting the middle plate and casting. Wherein the forged product has the highest price, the middle plate has the lowest price and the casting and forging are the lowest. Casting is the first process. The quality is better for forging and middle plate, and the cast forging is slightly worse, so the middle plate process with higher cost performance is preferred in the embodiment. The blind plate body 1 is inserted between two pipelines to plug the pipeline opening and prevent gas from leaking when the pipelines with gas need to be connected or maintained; the blind plate comprises at least two extending parts 2 which are arranged on a blind plate body 1 and extend outwards, wherein the number of the extending parts 2 is two, the intersection angle of the two extending parts 2 and the center connecting line of the blind plate body 1 is 90 degrees, the 90-degree intersection angle can meet the distribution condition of all types of flange bolt holes, and the two extending parts 2 are convex outwards; the blind flange comprises a blind flange body 1 and at least one through hole 3 arranged on the extension part 2, wherein the number of the through holes 3 arranged on one extension part 2 is two, the diameter of the through hole 3 close to the center of the blind flange body 1 is the same as that of a bolt hole of a matched flange, after the blind flange body 1 is inserted between two matched flanges, the position of the through hole 3 is matched with that of the bolt hole of the matched flange, a screw penetrates through the bolt holes of the two matched flanges to hit the through hole 3 on the extension part 2 at one time, and the other end of the blind flange body is screwed by a nut, so that the blind flange body 1 can be fastened with the matched flange, the blind flange body is relatively stable in work, cannot fall off, and safety and tightness are guaranteed; the through hole 3 far away from the center of the blind plate body 1 is matched with auxiliary hoisting equipment, so that the hoisting equipment is conveniently connected with the through hole 3, and the blind plate body 1 is hoisted by the hoisting equipment and is installed between matched flanges; when the work is finished and the blind plate needs to be locally taken out, the blind plate is locally lifted and taken out by connecting a lifting device with the through hole 3; so that the blind body 1 can be conveniently installed and extracted when in use.

Preferably, when a circular hole with the diameter the same as that of the inner hole of the matched flange is formed in the center of the blind plate body 1, the blind plate body 1 does not need to be taken out, the flanges on the two sides are still connected through bolts, and the stability conduction of pipelines on the two sides is ensured.

Preferably, the upper surface and the lower surface of the blind plate body are both provided with at least one annular groove 4 for mounting a sealing rubber ring; the annular groove 4 is matched with the sealing rubber ring, so that the sealing ring can be arranged in the annular groove, the sealing effect is jointly guaranteed by the sealing ring and the flange gaskets on the two sides, and the sealing effect can be effectively achieved.

The working principle is as follows: the blind plate is connected with the through hole 3 far away from the center of the blind plate body 1 on the extension part 2 through the lifting device, the blind plate body 1 is lifted to a position between flanges matched with the blind plate body, the through hole 3 near the center of the blind plate body 1 on the extension part 2 is aligned with the position of a bolt hole of a matched flange, a bolt penetrates through the bolt hole and the through hole 3, and the blind plate is fastened by a nut.

From the above description, it can be seen that the following technical effects are achieved by the present application: the round blind plate body 1 can be matched with a pipeline and a matched flange better, so that the safety during working is improved; through the through holes 3 matched with the bolt holes of the matched flange are formed in the extending parts 2 extending outwards, the blind plate body 1 and the matched flange can be fastened, the operation is relatively stable, and the safety and the tightness are guaranteed; through set up on the extension 2 that outwards extends with supplementary equipment matched with that lifts by crane through-hole 3 for blind plate body 1 is more portable installation and extraction when using.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flange blind, comprising: the blind plate comprises a blind plate body, at least two extending parts and at least one through hole, wherein the at least two extending parts are arranged on the blind plate body and extend outwards; the upper surface and the lower surface of the blind plate body are provided with at least one annular groove for installing a sealing rubber ring.

2. A flange blank according to claim 1 wherein the blank body is a circular plate.

3. A flange blind according to claim 1 wherein there are two said extensions, and the angle of intersection of both said extensions with the line connecting the centers of said blind bodies is 90 °.

4. A flange blank according to claim 1, wherein there are two of said through holes provided in one of said extensions.

5. A flange blank according to claim 4, wherein the through holes near the center of the blank body have the same diameter as the bolt holes of the mating flange and are arranged circumferentially with the bolt holes of the corresponding flange.

6. A flange blind according to claim 4 wherein the through hole remote from the centre of the blind body is matched with auxiliary lifting equipment.

7. A flange blank according to claim 1, wherein the blank body is made of sheet metal.

8. A flange blank according to claim 1, wherein the center of the blank body is provided with a circular hole with the same diameter as the inner hole of the matched flange.

9. A flange gasket, comprising: a flange blank according to any one of claims 1 to 8.