CN217482225U

CN217482225U - High-temperature-resistant composite gasket for thermal power plant pipeline

Info

Publication number: CN217482225U
Application number: CN202220658138.0U
Authority: CN
Inventors: 李波涛
Original assignee: Luoyang Baigong Industrial Seal Co ltd
Current assignee: Luoyang Baigong Industrial Seal Co ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-09-23
Anticipated expiration: 2032-03-24

Abstract

The utility model discloses a high temperature resistant composite gasket for thermal power plant pipeline, which relates to the technical field of pipeline gaskets and solves the technical problems that the existing heat dissipation effect is not good, the whole structure is not flexible enough due to the design reason, and the tightness is poor, comprising connecting flanges, a gasket structure is arranged between the connecting flanges, and the gasket structure and the connecting flanges are both provided with connecting holes; the gasket structure includes annular gasket, the heat dissipation opening has been seted up on the annular gasket of connecting hole both sides, the inner ring that heat dissipation opening and annular gasket do not communicate and set up the utility model discloses, have multiple structural form for the user can carry out the optional packing according to the demand of using and use, thereby has enlarged the scope of using, is convenient for promote, wholly has good tight nature that rises moreover, makes hookup location department have the advantage of better sealed effect.

Description

High-temperature-resistant composite gasket for thermal power plant pipeline

Technical Field

The utility model relates to a pipeline gasket technical field, more specifically relate to high temperature resistant composite pad piece technical field for the pipeline of steam power plant.

Background

The method comprises the following steps that a large number of conveying pipelines exist in a thermal power plant, because the lengths of the pipelines are limited, the pipelines are required to be connected in order to meet conveying requirements of different distances, flanges are inevitably required to be used in the connecting process, and gaskets are required to be installed between the flanges, so that the connection tightness is ensured;

the application number 202020974930.8 discloses a high-temperature-resistant gasket, which relates to the technical field of gaskets and comprises a lower gasket and an upper gasket embedded in the lower gasket, wherein the diameters of the upper gasket and the lower gasket are equal, one side of the upper gasket, which is opposite to the lower gasket, is respectively provided with a first groove and a second groove, the bottom wall of the second groove is fixedly connected with a plurality of groups of sleeves, and the bottom walls of the groups of sleeves are respectively provided with a damping spring; the high-temperature resistant layer plays a high-temperature protection effect on the upper gasket and the lower gasket, and the heat dissipation holes dissipate heat between the upper gasket and the lower gasket.

Although the above patent can be used, its heat dissipation region separates with external region, makes radiating effect not good from this, makes overall structure not nimble enough owing to the reason of design moreover, and tension nature is relatively poor, for this reason we provide a high temperature resistant composite pad for steam power plant pipeline.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the technical problem that radiating effect is not good, the utility model provides a high temperature resistant composite pad piece for steam power plant's pipeline, not only the structure is nimble, has good tight nature that rises moreover, and the higher leakproofness of while temperature is better to people's user demand has been satisfied.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme: a high-temperature-resistant composite gasket for pipelines of a thermal power plant comprises connecting flanges, a gasket structure is arranged between the connecting flanges, and connecting holes are formed in the gasket structure and the connecting flanges;

the gasket structure comprises an annular gasket, heat dissipation openings are formed in the annular gasket on two sides of the connecting hole, and the heat dissipation openings are not communicated with the inner ring of the annular gasket.

The working and using process is as follows: install the annular gasket between two flanges, then pass the bolt from the inside of connecting hole, install nut on the bolt at last, fix the annular gasket between two flanges through screwing up the nut from this, accomplish the installation from this, and the open-ended setting of heat dissipation on the annular gasket for the annular gasket has great area of contact with the external world, thereby is convenient for the quick effluvium of the inside heat of annular gasket.

The two ends of the annular gasket are provided with first connecting rings corresponding to the surfaces of the connecting flanges, the first connecting rings are of frustum structures, and the farther the second connecting rings are from the annular gasket, the larger the opening is.

The first connecting ring is made of memory metal, the maximum diameter of the first connecting ring is larger than the pipe diameter of the connecting flange, and the minimum diameter of the first connecting ring is smaller than the pipe diameter of the connecting flange.

And the two ends of the annular gasket are provided with connecting rings II, the connecting rings II are of frustum structures, and the farther the connecting flange is from the annular gasket, the smaller the opening is.

Install spacing pad between annular gasket and the flange, position department installs sealing bush between spacing pad side corresponds go-between two and flange's the inner wall, the bayonet socket has been seted up to the position department that the side of sealing bush corresponds two tops of go-between, the through-hole has been seted up to the position department that corresponds the connecting hole on the spacing pad.

The sealing bush is provided with a connecting plate on the surface far away from one end of the annular gasket, a guide ring is arranged at the top end of the connecting plate, and the outer walls of the guide ring and the sealing bush are tangent to the inner wall of the connecting flange.

The outer wall of the second connecting ring is provided with a boss, the outer portion of the top end of the second connecting ring is provided with a thin plate, the thin plate covers the outer portion of the boss, and the distance from the center line of the annular gasket to the top end of the boss is larger than the inner diameter of the connecting flange.

Inner supporting columns are distributed on the inner wall of the connecting ring II at positions corresponding to the bosses, and inner supporting rings are installed at the bottom ends of the inner supporting columns.

The beneficial effects of the utility model are as follows:

1. the high-temperature-resistant composite gasket for the pipeline of the thermal power plant has various structural forms, so that a user can select, assemble and use the gasket according to the use requirement, the use range is expanded, the gasket is convenient to popularize, and the whole gasket has good tightness and a good sealing effect at the connection position;

2. when the structure that uses go-between two and seal bushing acts as the gasket structure, can select seal bushing and spacing specification of filling up according to flange's internal diameter to satisfied the use of multiple pipe diameter, the impact force that receives of the regional department between seal bushing and the flange has moreover been reduced in the setting of guide ring, thereby has reduced the probability of revealing the emergence.

3. When adopting go-between one to be seal structure, because go-between one adopts memory metal to make, inwards extrusion go-between one can install when making from this, heat go-between one after the installation is accomplished, can make go-between one resume initial condition, because the outside pipe diameter of go-between one is greater than flange's pipe diameter setting, make the top of go-between one closely laminate on flange's inner wall from this to sealed effect has been guaranteed.

4. When the second connecting ring, the boss and the thin plate are used as sealing components, the connecting flange is extruded inwards, so that the thin plate and the inner diameter of the connecting flange and the thin plate and the boss can be connected tightly, the sealing effect is guaranteed, and the second connecting ring is convenient to connect the second connecting ring and the connecting flange for installation.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of a first embodiment of the present invention;

fig. 3 is a schematic cross-sectional view illustrating a second embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a third embodiment of the present invention;

fig. 5 is a partially enlarged schematic view of an end a1 of the present invention;

1-a connecting flange; 2-a gasket structure; 3-connecting holes; 4-an annular gasket; 5-heat dissipation opening; 6-connecting ring I; 7-connecting ring II; 8-sealing the bushing; 9-a limiting pad; 10-a through hole; 11-bayonet; 12-a connecting plate; 13-a guide ring; 14-a boss; 15-thin plate; 16-inner struts; 17-inner support ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-5, the embodiment provides a high-temperature resistant composite gasket for a pipeline of a thermal power plant, which includes a connecting flange 1, a gasket structure 2 is installed between the two connecting flanges 1, and both the gasket structure 2 and the connecting flange 1 are provided with a connecting hole 3; the connection and fixation between the connection flange 1 and the spacer structure 2 are thereby facilitated by mounting bolts inside the connection holes 3.

The gasket structure 2 comprises an annular gasket 4, heat dissipation openings 5 are formed in the annular gasket 4 on two sides of the connecting hole 3, the heat dissipation openings 5 are not communicated with the inner ring of the gasket structure 2, and the gasket structure 2 is convenient to dissipate heat due to the arrangement of the heat dissipation openings 5.

The working and using process is as follows: install annular gasket 4 between two flanges 1, then pass through the bolt from the inside of connecting hole 3, at last mounting nut on the bolt, through tighten the nut from this annular gasket 4 fix between two flanges 1, accomplish the installation from this, and the setting of heat dissipation opening 5 on annular gasket 4 for annular gasket 4 has great area of contact with the external world, thereby is convenient for the inside heat of annular gasket 4 quick the effluvium.

Example 2

As shown in fig. 1 and 4, based on embodiment 1, the first connecting rings 6 are mounted on the surfaces of the two ends of the annular gasket 4 corresponding to the connecting flange 1, the first connecting rings 6 are arranged in a frustum structure, and the farther the connecting flange 1 is from the annular gasket 4, the larger the opening is, so that the outermost side of the mounted first connecting rings 6 can be arranged in close contact with the inner wall of the connecting flange 1.

The connecting ring I6 is made of memory metal, so that the connecting ring I6 is folded inwards when being installed, the connecting ring I6 is heated after the installation, the outermost side of the connecting ring I6 can be in close contact with the inner wall of the connecting flange 1, the maximum diameter of the connecting ring I6 is larger than the pipe diameter of the connecting flange 1, the minimum diameter of the connecting ring I6 is smaller than the pipe diameter of the connecting flange 1, and the connection sealing performance between the connecting ring I6 and the connecting flange 1 is guaranteed.

When adopting go-between 6 to seal structure, because go-between 6 adopts memory metal to make, inwards extrusion go-between 6 can install when making from this, heat go-between 6 after the installation is accomplished, can make go-between 6 resume initial condition, because the outside pipe diameter of go-between 6 is greater than the pipe diameter setting of flange 1, make the top of go-between 6 can closely laminate on flange 1's inner wall, thereby sealed effect has been guaranteed

Example 3

As shown in fig. 1, 2, 3, and 5, based on embodiment 1, the connection ring two 7 is mounted at both ends of the annular gasket 4, the connection ring two 7 is set to be of a frustum structure, and the farther the connection ring two 7 is from the annular gasket 4, the smaller the opening is, because the farther the connection ring two 7 is from the annular gasket 4, the smaller the opening is, the more the connection ring two 7 is from the annular gasket 4, the connection ring two 7 is inserted into the connection flange 1, and the rapid mounting of the annular gasket 4 is realized.

Example 4

As shown in fig. 1, 2 and 5, according to embodiment 3, a position-limiting pad 9 is installed between the annular gasket 4 and the connecting flange 1, a sealing bush 8 is installed at a position, corresponding to a position between the second connecting ring 7 and the inner wall of the connecting flange 1, of a side surface of the sealing bush 8, a bayonet 11 is opened at a position, corresponding to the top end of the second connecting ring 7, of the position-limiting pad 9, a through hole 10 is opened at a position, corresponding to the connecting hole 3, of the position-limiting pad 9, the sealing bush 8 is installed, then the annular gasket 4 is installed, then a bolt is tightened, so that the distance between the connecting flange 1 and the gasket structure 2 is shortened, and finally the top end of the second connecting ring 7 is inserted into the bayonet 11, and therefore, the connection sealing performance between the annular gasket 4 and the sealing bush 8 is ensured.

Install connecting plate 12 on the face that 4 one ends of annular gasket were kept away from to sealing bush 8, guide ring 13 is installed on the top of connecting plate 12, can carry out the water conservancy diversion to the solution of flowing through guide ring 13, has reduced the impact force that 8 top positions of sealing bush department received from this, guide ring 13 and sealing bush 8's outer wall all with the tangent setting of flange 1's inner wall, guaranteed the sealed effect between guide ring 13 and flange 1 and sealing bush 8 and flange 1.

When the structure using the second connecting ring 7 and the sealing bush 8 serves as the gasket structure 2, the specifications of the sealing bush 8 and the limiting pad 9 can be selected according to the inner diameter of the connecting flange 1, so that the use of various pipe diameters is met, and the impact force received by the region between the sealing bush 8 and the connecting flange 1 can be reduced due to the arrangement of the guide ring 13, so that the leakage probability is reduced.

Example 5

As shown in fig. 1 and 3, according to embodiment 3, a boss 14 is installed on the outer wall of the connecting ring II 7, a thin plate 15 is installed on the outer portion of the top end of the connecting ring II 7, the thin plate 15 covers the outer portion of the boss 14, the distance from the center line of the annular gasket 4 to the top end of the boss 14 is larger than the inner diameter of the connecting flange 1, and by inserting the connecting ring II 7 into the connecting flange 1, the thin plate 15 can be tightly contacted with the boss 14 through the inner wall of the connecting flange 1, and simultaneously, the thin plate 15 can be tightly contacted with the inner wall of the connecting flange 1 through the boss 14, so that the connection tightness is ensured.

An inner support column 16 is distributed on the inner wall of the connecting ring II 7 at the position corresponding to the boss 14, and an inner support ring 17 is mounted at the bottom end of the inner support column 16, so that the connecting ring II 7 has good deformation resistance.

When the connecting ring II 7, the boss 14 and the thin plate 15 are used as sealing components, the connecting flange 1 is extruded inwards, so that the thin plate 15 and the inner diameter of the connecting flange 1 and the thin plate 15 and the boss 14 can be connected tightly, the sealing effect is ensured, and the connecting ring II 7 is convenient to connect and install the connecting ring II 7 and the connecting flange 1.

Claims

1. The high-temperature-resistant composite gasket for the pipeline of the thermal power plant comprises connecting flanges (1), and is characterized in that a gasket structure (2) is arranged between the connecting flanges (1), and connecting holes (3) are formed in the gasket structure (2) and the connecting flanges (1);

the gasket structure (2) comprises an annular gasket (4), heat dissipation openings (5) are formed in the annular gaskets (4) on the two sides of the connecting hole (3), and the heat dissipation openings (5) are not communicated with the inner ring of the annular gasket (4).

2. The high-temperature-resistant composite gasket for the thermal power plant pipeline as claimed in claim 1, wherein the first connecting ring (6) is mounted on the surface of the annular gasket (4) corresponding to the connecting flange (1), the first connecting ring (6) is arranged in a frustum structure, and the opening of the second connecting ring (7) is larger as the distance from the annular gasket (4) is farther.

3. The high-temperature-resistant composite gasket for the thermal power plant pipeline as claimed in claim 2, wherein the connection ring I (6) is made of memory metal, the maximum diameter of the connection ring I (6) is larger than the pipe diameter of the connection flange (1), and the minimum diameter of the connection ring I (6) is smaller than the pipe diameter of the connection flange (1).

4. The high-temperature-resistant composite gasket for the thermal power plant pipeline as recited in claim 1, wherein the two ends of the annular gasket (4) are respectively provided with a second connecting ring (7), the second connecting rings (7) are arranged in a frustum structure, and the farther the connecting flange (1) is from the annular gasket (4), the smaller the opening is.

5. The high-temperature-resistant composite gasket for the pipelines of the thermal power plant according to claim 4, wherein a limiting pad (9) is installed between the annular gasket (4) and the connecting flange (1), a sealing bushing (8) is installed at a position, corresponding to the position between the connecting ring II (7) and the inner wall of the connecting flange (1), of the side surface of the limiting pad (9), a bayonet (11) is formed at a position, corresponding to the top end of the connecting ring II (7), of the side surface of the sealing bushing (8), and a through hole (10) is formed at a position, corresponding to the connecting hole (3), of the limiting pad (9).

6. The high-temperature-resistant composite gasket for the thermal power plant pipeline as claimed in claim 5, wherein a connecting plate (12) is installed on a face, away from one end of the annular gasket (4), of the sealing bush (8), a guide ring (13) is installed at the top end of the connecting plate (12), and the outer walls of the guide ring (13) and the sealing bush (8) are both arranged tangentially to the inner wall of the connecting flange (1).

7. The high-temperature-resistant composite gasket for the thermal power plant pipeline as claimed in claim 4, wherein a boss (14) is installed on the outer wall of the connecting ring II (7), a thin plate (15) is installed on the outer portion of the top end of the connecting ring II (7), the thin plate (15) covers the outer portion of the boss (14), and the distance from the center line of the annular gasket (4) to the top end of the boss (14) is larger than the inner diameter setting of the connecting flange (1).

8. The high-temperature-resistant composite gasket for the thermal power plant pipeline as claimed in claim 7, wherein inner struts (16) are distributed on the inner wall of the connecting ring II (7) at positions corresponding to the bosses (14), and inner support rings (17) are installed at the bottom ends of the inner struts (16).