CN213177191U - Hoop sealing structure for preventing leakage of flange - Google Patents
Hoop sealing structure for preventing leakage of flange Download PDFInfo
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- CN213177191U CN213177191U CN202022146935.4U CN202022146935U CN213177191U CN 213177191 U CN213177191 U CN 213177191U CN 202022146935 U CN202022146935 U CN 202022146935U CN 213177191 U CN213177191 U CN 213177191U
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Abstract
The utility model discloses a prevent staple bolt seal structure of flange leakage belongs to flange seal technical field, and it includes staple bolt structure and flexible prevention of seepage area, the hoop body includes curved section of embracing, and the both ends of embracing the section link up with first inclined plane section and second inclined plane section respectively, and first inclined plane section and second inclined plane section link up with first locking section and second locking section respectively, and one of them compact heap embedding is between two first inclined plane sections, and another compact heap embedding is between two second inclined plane sections. The utility model provides a prevent staple bolt seal structure of flange leakage, two compact heap surround the gap constitution shutoff between the section tip with two, extrude each position in flexible prevention of seepage area, make flexible prevention of seepage area hug closely in the flange periphery comprehensively, realized the effective sealing in gap between two flanges, prevent that the medium from leaking through the flange terminal surface in the pipeline.
Description
Technical Field
The utility model relates to a prevent staple bolt seal structure of flange leakage belongs to flange seal technical field.
Background
The pipelines are important equipment for conveying fluids such as liquid, gas and the like, are limited by the length of each pipeline, and need to be connected through flanges to realize remote medium conveying. When the pipelines are connected, the flanges are welded at the pipe orifices of the two pipelines respectively, and the flanges on the two pipelines are fastened together through bolts after the flanges are welded. To enhance the sealing performance between the flange end faces on two pipes, a sealing gasket is usually provided between the end faces of the two flanges. However, when the pressure fluctuation of the medium conveyed in the pipeline is large, or the environmental condition of the pipeline is changed, or the performance of the sealing gasket is damaged after the pipeline runs for a long time, the medium in the pipeline is easy to leak from the end faces of the two flanges, so that the medium in the pipeline is lost. In order to solve the leakage problem, even the flange connection is directly welded in actual conditions, so that the maintenance difficulty is increased and the pipeline maintenance is difficult. Therefore, the device capable of enhancing the sealing performance of the flange is provided, so that the device can meet the requirements of various complex working conditions and becomes the key of research.
The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the problem that prior art exists, provide a staple bolt seal structure that prevents flange leakage, can extrude each position in flexible prevention of seepage area, make flexible prevention of seepage area hug closely in the flange periphery comprehensively, realized the effective sealing in gap between two flanges.
The utility model discloses an adopt following technical scheme to realize above-mentioned purpose:
the hoop sealing structure comprises an annular hoop structure and a flexible impermeable belt attached to the inner side of the hoop structure, wherein the hoop structure is formed by encircling two hoop bodies and two pressing blocks;
the hoop body comprises an arc-shaped encircling section, two ends of the encircling section are respectively connected with a first inclined plane section and a second inclined plane section, the first inclined plane section and the second inclined plane section are respectively connected with a first locking section and a second locking section, the first inclined plane section and the second inclined plane section incline towards the radial outer side of the encircling section, and the first locking section and the second locking section are fixedly connected through a bolt and nut component;
the distance between the two first inclined surface sections and the distance between the two second inclined surface sections in the hoop structure are gradually reduced towards the radial outer side of the encircling section, one pressing block is embedded between the two first inclined surface sections, and the other pressing block is embedded between the two second inclined surface sections;
the pressing blocks are provided with upper end faces, lower end faces and inner arc faces, the two first inclined face sections are respectively attached to the upper end face and the lower end face of one of the pressing blocks, the two second inclined face sections are respectively attached to the upper end face and the lower end face of the other pressing block, and the inner arc faces of the two pressing blocks face the direction of the circle center of the encircling section.
Optionally, the inner hoop surface of the hoop body is provided with an arc-shaped convex strip, and the convex strip and the hoop body extend in the same direction.
Optionally, the width of the protruding strip decreases gradually towards the radial inner side of the encircling section.
Optionally, the cross section of each convex strip is frustum-shaped.
Optionally, the curvature of the inner arc surface of the pressing block is the same as the curvature of the surrounding section.
Optionally, the radian range of the surrounding section is
Optionally, the flexible impermeable belt is a fluorine rubber belt or a fluorine-silicon rubber belt.
Optionally, the two first locking sections and the two second locking sections in the hoop structure are respectively arranged in parallel.
Benefits of the present application include, but are not limited to:
the utility model provides a prevent staple bolt seal structure of flange leakage adds the inclined plane section between the section of embracing and the locking section of every hoop body, presss from both sides between the inclined plane section of two hoop bodies and establishes the compact heap, makes two hoop bodies and two compact heaps surround and form the staple bolt structure together, and the inside centre gripping space that holds the flange that forms of staple bolt structure. In the structure, the two pressing blocks are used for plugging the gap between the end parts of the two surrounding sections and extruding each part of the flexible impermeable belt, so that the flexible impermeable belt is completely and tightly attached to the periphery of the flange, the effective sealing of the gap between the two flanges is realized, and the medium in the pipeline is prevented from leaking through the end faces of the flanges.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a hoop sealing structure for preventing a flange from leaking in one embodiment of the present invention;
FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;
fig. 3 is a schematic structural view of a hoop sealing structure for preventing leakage of a flange according to another embodiment of the present invention;
FIG. 4 is an enlarged sectional view taken along line A-A of the hoop portion of FIG. 3;
FIG. 5 is an enlarged sectional view of the pressing block of FIG. 3 from B-B;
fig. 6 is an enlarged schematic structural view of a pressing block portion in the hoop sealing structure for preventing leakage of the flange according to the present invention;
fig. 7 is a schematic structural view of the hoop sealing structure for preventing leakage of the flange according to the present invention when the hoop sealing structure is installed outside the flange;
in the figure, 100, flexible impermeable strips; 210. encircling the section; 221. a first slope section; 222. a second slope section; 231. a first locking section; 232. a second locking section; 240. a bolt and nut assembly; 250. a convex strip; 300. a compression block; 310. an upper end surface; 320. a lower end face; 330. an intrados surface; 400. and (4) a flange.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein. Accordingly, the scope of the present invention is not limited by the specific embodiments disclosed below.
As shown in fig. 1 and fig. 2, the utility model provides a prevent staple bolt seal structure of flange leakage, cover in the inboard flexible anti-seepage area 100 of staple bolt structure including annular staple bolt structure with pasting, the staple bolt structure is enclosed by two hoop bodies and two compact heap 300 and is formed. The hoop structure hoops the flexible impermeable belt 100 on the outer side of the gap between the two flanges, further seals the gap between the end faces of the two flanges 400, and prevents the medium in the pipeline from leaking between the end faces of the flanges.
The traditional hoop structure is generally composed of two semi-annular hoop bodies, the two hoop bodies are encircled at the joint of a pipe fitting during use, and the end parts of the two hoop bodies are fastened through a bolt and nut assembly 240. However this kind of traditional staple bolt structure is being applied to the utility model relates to a when the occasion that prevents the flange and reveal, if flexible anti-seepage area is uneven in the winding thickness in the flange outside, for example when the winding thickness of flexible anti-seepage area is great, the staple bolt structure fastening is behind the outside in flexible anti-seepage area, and flexible anti-seepage area can strut two hoop bodies, leaves the gap between the tip of two hoop bodies and can not closing, and then makes the flexible anti-seepage area of two hoop body gaps department can not receive the extrusion and hug closely the lateral surface of flange and form effective sealing.
In order to solve the problem, the utility model provides an among the staple bolt seal structure that prevents the flange leakage, the hoop body includes curved section 210 of embracing to and link up in proper order and embrace inclined plane section and the locking section of section 210 tip, add the inclined plane section between the section 210 of embracing and the locking section of traditional staple bolt structure promptly. The slope of the slope section refers to the surface engaged with the inner circle surface of the surrounding section 210.
Specifically, two ends of the surrounding section 210 are respectively engaged with the first inclined section 221 and the second inclined section 222, the first inclined section 221 and the second inclined section 222 are respectively engaged with the first locking section 231 and the second locking section 232, the first inclined section 221 and the second inclined section 222 are inclined towards the radial outer side of the surrounding section 210, and the first locking section 231 and the second locking section 232 are fastened and connected through the bolt and nut assembly 240.
In the hoop structure, the distance between the two first inclined surface sections 221 and the distance D between the two second inclined surface sections 222 decrease gradually towards the radial outer side of the surrounding section 210, wherein one of the pressing blocks is embedded between the two first inclined surface sections 221, and the other pressing block is embedded between the two second inclined surface sections 222.
With further reference to fig. 6, the pressing blocks 300 have an upper end surface 310, a lower end surface 320, and an intrados surface 330, the two first inclined surface sections 221 are respectively attached to the upper end surface 310 and the lower end surface 320 of one of the pressing blocks, the two second inclined surface sections 222 are respectively attached to the upper end surface 310 and the lower end surface 320 of the other pressing block 300, and the intrados surfaces 330 of the two pressing blocks 300 face the direction of the center of the circle of the encircling section 210.
In the structure, the pressing block 300 is clamped between the inclined surface sections at the end parts of the two hoop bodies, the two hoop bodies and the two pressing blocks 300 are enclosed together, and a clamping space for accommodating the flange is formed inside the clamping space.
During construction, oil stains in a gap between the two flanges are cleaned, the flexible anti-seepage belt 100 is wrapped on the outer sides of the flanges, the two hoop bodies are encircled on the outer sides of the flexible anti-seepage belt 100, and the two pressing blocks 300 are respectively embedded between the two first inclined surface sections 221 and between the two second inclined surface sections 222. Then, two bolts are taken, one of the bolts passes through the two first locking sections 231, the other bolt passes through the two second locking sections 232, and the two bolts are respectively screwed with the bolts for fastening, so that the installation of the hoop structure is completed (as shown in fig. 7). During maintenance, the bolt and nut assembly 240 is loosened, and the two hoop bodies are dismounted.
In the process of screwing the bolt, the two first locking sections 231 and the two second locking sections 232 are close to each other, so that the distance between the two first inclined surface sections 221 and the distance between the two second inclined surface sections 222 are reduced, and the pressing block 300 between the two first inclined surface sections 221 and the pressing block 300 between the two second inclined surface sections 222 are forced to move towards the center of the encircling section 210, so as to press the flexible impermeable belt 100 between the ends of the encircling section 210, and form a seal. In the structure, the two pressing blocks 300 are used for sealing the gap between the ends of the two surrounding sections 210, and all parts of the flexible impermeable belt 100 are tightly attached to the outer sides of the flanges, so that the gap between the two flanges is effectively sealed. Moreover, since the distance between the two first inclined surface sections 221 and the distance between the two second inclined surface sections 222 in the hoop structure decrease gradually towards the radial outer side of the surrounding section 210, the pressing block 300 cannot move outwards in the operation process of the hoop sealing structure, and thus the required pressing force is always provided.
In order to enhance the tightness of the gap between the flexible impermeable strip 100 and the two flanges, as shown in fig. 3-5, in a preferred embodiment, arc-shaped convex strips 250 are respectively arranged on the inner hoop surfaces of the two hoop bodies, and the convex strips 250 extend in the same direction as the hoop bodies. The rib 250 is arranged to provide a directional compression of the flexible impermeable strip 100 so that the flexible impermeable strip 100 can be pressed into the gap between the two flanges. It can be understood that the inner hoop surface of the hoop body refers to the inner hoop surface of the hoop body, which is directly contacted with the flexible impermeable belt 100, surrounding the hoop section 210 and the pressing block 300.
Further, the width of the convex strip 250 decreases gradually towards the radial inner side of the encircling section 210, the cross section of the convex strip 250 is preferably in a frustum shape, the acting force between the convex strip 250 and the flexible impermeable belt 100 in unit area can be increased, the extrusion amount of the flexible impermeable belt 100 in the gap between the two flanges is increased, and the sealing effect is optimized.
In order to enable the hoop structure to effectively squeeze the flexible impermeable belt 100 at all positions in the circumferential direction, in a preferred embodiment, the curvature of the inner arc surface of the pressing block 300 is the same as that of the surrounding section 210, and the arc range of the surrounding section 210 is
So arranged, in the bag of the flexible impermeable strip 100When the winding thickness is larger, the pressing block 300 in the hoop structure is closer to the outer side; when the wrapping thickness of the flexible impermeable belt 100 is smaller, the pressing block 300 in the hoop structure is closer to the inner side, and the adaptability is stronger. The position of the pressing block 300 can also move according to the fastening degree of the two hoop bodies, for example, when the fastening force of the two hoop bodies is strong, the pressing block 300 is forced to move towards the center of the circle surrounding the section 210.
The flexible barrier tape 100 is a tape-shaped rubber or film having elasticity and preventing the permeation of an oily or aqueous medium, and is preferably a fluorine rubber tape or a fluorine silicon rubber tape.
Generally, two hoop bodies in the hoop structure adopt a symmetrical structure, and two first locking sections 231 and two second locking sections 232 in the hoop structure are respectively arranged in parallel, so that the hoop structure is convenient to process and install. The hoop body can be made of stainless steel, aluminum alloy and the like.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The above-mentioned specific embodiments can not be regarded as the restriction to the protection scope of the present invention, to the technical personnel in this technical field, it is right that any replacement improvement or transformation that the embodiment of the present invention made all fall within the protection scope of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (8)
1. The hoop sealing structure for preventing the leakage of the flange is characterized by comprising an annular hoop structure and a flexible anti-seepage belt attached to the inner side of the hoop structure, wherein the hoop structure is formed by encircling two hoop bodies and two pressing blocks;
the hoop body comprises an arc-shaped encircling section, two ends of the encircling section are respectively connected with a first inclined plane section and a second inclined plane section, the first inclined plane section and the second inclined plane section are respectively connected with a first locking section and a second locking section, the first inclined plane section and the second inclined plane section incline towards the radial outer side of the encircling section, and the first locking section and the second locking section are fixedly connected through a bolt and nut component;
the distance between the two first inclined surface sections and the distance between the two second inclined surface sections in the hoop structure are gradually reduced towards the radial outer side of the encircling section, one pressing block is embedded between the two first inclined surface sections, and the other pressing block is embedded between the two second inclined surface sections;
the pressing blocks are provided with upper end faces, lower end faces and inner arc faces, the two first inclined face sections are respectively attached to the upper end face and the lower end face of one of the pressing blocks, the two second inclined face sections are respectively attached to the upper end face and the lower end face of the other pressing block, and the inner arc faces of the two pressing blocks face the direction of the circle center of the encircling section.
2. The hoop sealing structure for preventing the leakage of the flange according to claim 1, wherein the inner hoop surface of the hoop body is provided with an arc-shaped protruding strip, and the protruding strip extends in the same direction as the hoop body.
3. The hoop sealing structure for preventing the leakage of the flange according to claim 2, wherein the width of the raised strip decreases gradually towards the radial inner side of the surrounding section.
4. The hoop sealing structure for preventing the leakage of the flange according to claim 3, wherein the cross section of the protruding strip is frustum-shaped.
5. The hoop sealing structure for preventing the leakage of the flange according to claim 1, wherein the curvature of the inner arc surface of the pressing block is the same as that of the surrounding section.
6. The hoop sealing structure for preventing the leakage of the flange according to claim 1, wherein the radian range of the encircling section is within the range of
7. The hoop sealing structure for preventing the leakage of the flange according to claim 1, wherein the flexible impermeable belt is a fluorine rubber belt or a fluorine silicon rubber belt.
8. The hoop sealing structure for preventing leakage of flanges as claimed in claim 1, wherein two first locking sections and two second locking sections are respectively arranged in parallel in the hoop structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022146935.4U CN213177191U (en) | 2020-09-25 | 2020-09-25 | Hoop sealing structure for preventing leakage of flange |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022146935.4U CN213177191U (en) | 2020-09-25 | 2020-09-25 | Hoop sealing structure for preventing leakage of flange |
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| CN213177191U true CN213177191U (en) | 2021-05-11 |
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| CN202022146935.4U Active CN213177191U (en) | 2020-09-25 | 2020-09-25 | Hoop sealing structure for preventing leakage of flange |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959646A (en) * | 2021-09-22 | 2022-01-21 | 成都嘉斯福科技有限公司 | Hydrogen pipeline joint leakage detection equipment |
| CN114397067A (en) * | 2021-12-29 | 2022-04-26 | 中国原子能科学研究院 | Leak detection device and leak detection method |
-
2020
- 2020-09-25 CN CN202022146935.4U patent/CN213177191U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959646A (en) * | 2021-09-22 | 2022-01-21 | 成都嘉斯福科技有限公司 | Hydrogen pipeline joint leakage detection equipment |
| CN113959646B (en) * | 2021-09-22 | 2023-12-22 | 成都嘉斯福科技有限公司 | Hydrogen pipeline junction leakage detection equipment |
| CN114397067A (en) * | 2021-12-29 | 2022-04-26 | 中国原子能科学研究院 | Leak detection device and leak detection method |
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