CN207406982U - A kind of flange on-line pressure sealant structure - Google Patents

Abstract

The utility model provides a flange with pressure sealing structure, which includes two symmetrical flanges on the left and right, a blind ring is arranged in the middle of the flange, and a flange clamp is arranged on the outer circle of the flange. The above-mentioned flange is provided with flange bolts for fixing. The utility model has the following effects: by adopting the structure of the utility model, the risk of the sealant entering the pipeline system can be effectively avoided, and the time for construction personnel to stay in a high-risk working environment can be reduced. The operation risk is reduced, the safety is higher, and the amount of sealant can be reduced, the cost can be reduced and the economic benefit can be improved.

Description

A flange with pressure sealing structure

technical field

The utility model relates to the technical field of pressure pipelines, in particular to a flange pressure sealing structure.

Background technique

Sealing under pressure of the existing flange structure: the gap between the fixture and the flange forms a sealed cavity, and the sealing is realized after a certain sealing specific pressure is formed by injecting a sealant into the cavity. There are certain shortcomings in the existing technology. When the sealant is injected into the flange gap, the sealant will enter the pipeline system through the leakage hole and chemically react with the process medium, causing destructive effects on the quality of the process product; the sealant will enter the pipeline system Finally, the instrument control system (such as: pressure induction pipe, monitoring point port, etc.) will be blocked, resulting in the interruption, failure or failure of the system transmission signal; in the case of serious damage to the flange gasket, the method of the background technology is adopted, and the sealant The extrusion force will cause further damage to the flange gasket, and it is entirely possible for the sealant to enter the pipeline system. In the end, not only will the pressure seal not be achieved successfully, but the leakage will increase and become out of control, eventually causing the production device to be forced to stop production ; When repairing and replacing damaged gaskets, it is difficult to disassemble the fixture and replace the gaskets because the flange gap and bolt holes are filled with solidified and dense sealant.

Utility model content

The utility model provides a flange pressure sealing structure, which can form no sealant in the sealing cavity formed by the gap between the clamp and the flange, solves the adverse risk of the conventional pressure sealing to the process production, and realizes the intrinsic safety of the process. When the installation deviation of the flange structure is large (that is, when the two flanges are not concentric and the center offset is large), the solution of the utility model is also applicable.

In order to solve the above-mentioned technical problems, the embodiment of the present application provides a pressure sealing scheme of a flange structure, which includes two symmetrical flanges on the left and right, a blind ring is arranged in the middle of the flange, and a blind ring is arranged in the middle of the flange. A flange fixture is arranged on the outer circle, and flange bolts for fixing are arranged on the flange.

As a preferred technical solution of the present invention, glue injection pads are provided at the ends of both sides of the flange bolts, and a glue injection valve is connected to the glue injection pads.

As a preferred technical solution of the present invention, the flange clamp is provided with clamp bolts, and the inner surface of the flange clamp and the assembly surface of the flange are provided with sealing packing.

As a preferred technical solution of the present invention, a sealant is provided inside the rubber injection pad, and a sealing packing is provided at one end of the rubber injection pad bonded to the flange.

The beneficial effects of the utility model are:

By adopting the structure of the utility model, the risk of sealant entering the pipeline system can be effectively avoided, the time for construction personnel to stay in a high-risk operation environment is reduced, the operation risk is reduced, and it is safer. It can also reduce the amount of sealant, reduce costs and improve economy. benefit.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 and Fig. 2 are the flange sealing structure diagrams of the present utility model

Fig. 3 is an enlarged view of the section of the flange fixture of the present invention

Figure 4 is an enlarged view of the flange bolt section of the utility model

In the figure, 1, flange a, 2, flange b, 3, blind ring, 4, rubber injection pad, 5, glue injection valve, 6, flange clamp, 7, flange bolt, 8, sealing packing, 9 , Fixture bolts, 10, sealant.

Detailed ways

In order to better solve the above-mentioned technical problems, the above-mentioned technical solutions will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

A flange pressure sealing structure described in this embodiment includes two symmetrical flanges 1.2 on the left and right, a blind ring 3 is arranged in the middle of the flange 1.2, and a blind ring 3 is arranged on the outer circle of the flange 1.2. The flange fixture 6, the flange 1.2 is provided with flange bolts 7 for fixing.

Wherein, in this embodiment, glue injection pads 4 are provided at the ends of both sides of the flange bolts 7 , and the glue injection pads 4 are connected with glue injection valves 5 .

Wherein, in this embodiment, the flange clamp 6 is provided with clamp bolts 9 , and the assembly surface of the flange clamp 6 and the inner flange 1.2 is provided with a sealing packing 8 .

Wherein, in this embodiment, a sealant 10 is provided inside the injection pad 4 , and a sealing packing 8 is provided at one end of the injection pad 4 attached to the flange.

The use steps of the utility model are as follows:

a Install sealing packing on the sealing groove of the fixture and the sealing groove of the injection pad;

b Clean the inner surface of the flange (the contact surface of the fixture sealing groove on the inner side of the flange), so that the sealing effect is better;

c Install the flange fixture, adjust the fit gap, and tighten the fixture bolts;

dRemove the flange bolts one by one, install the rubber injection pad (when installing the glue injection, clean the bonding surface between the rubber injection pad and the flange) and tighten the flange bolts, this process follows the flange fastening procedure; the whole process only One bolt is allowed to be loose;

eAfter all the bolts are installed with the glue injection pads, start to inject glue, first inject glue to the flange fixture, and then inject glue to the glue injection pads on the flange bolts;

f The plugging operation is completed, and the site is cleaned up.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solution of the utility model Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (4)

1. a kind of flange on-line pressure sealant structure includes the flange of two positional symmetries in left and right（1.2）, which is characterized in that it is described Flange（1.2）Centre is provided with blind circle（3）, the flange（1.2）Flange clamp is provided at outer circle（6）, the flange （1.2）On be provided with fixed flange bolt（7）.

A kind of 2. flange on-line pressure sealant structure according to claim 1, which is characterized in that the flange bolt（7）Two Injection pad is provided at the tail end of side（4）, the injection pad（4）On be connected with rubber injecting valve（5）.

A kind of 3. flange on-line pressure sealant structure according to claim 1, which is characterized in that the flange clamp（6）If There is fixture bolt（9）, the flange clamp（6）Airtight and watertight padding is equipped with the fitting surface of inner flange（8）.

A kind of 4. flange on-line pressure sealant structure according to claim 2, which is characterized in that the injection pad（4）It is internal Equipped with sealant（10）, the injection pad（4）With flange（1.2）The one end of fitting is equipped with airtight and watertight padding（8）.