CN111637295A - Double-flange sealing type axial expansion joint - Google Patents
Double-flange sealing type axial expansion joint Download PDFInfo
- Publication number
- CN111637295A CN111637295A CN202010366577.XA CN202010366577A CN111637295A CN 111637295 A CN111637295 A CN 111637295A CN 202010366577 A CN202010366577 A CN 202010366577A CN 111637295 A CN111637295 A CN 111637295A
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- China
- Prior art keywords
- flange
- axial
- sealing
- seal
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 184
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 229920001971 elastomer Polymers 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
- F16L23/22—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a double-flange sealing type axial expansion joint, which relates to the technical field of pipe connection and comprises a joint body pipe; the double-flange assembly comprises an axial sealing flange and a plane sealing flange which are connected, and the axial sealing flange and the plane sealing flange are sleeved on the second end part; and the sealing assembly comprises an axial sealing ring positioned between the axial sealing flange and the plane sealing flange, the axial sealing ring is provided with a radial sealing surface which is pressed against the outer peripheral surface of the second end part, and the axial sealing flange and/or the plane sealing flange is provided with a radial inclined surface so that the radial sealing surface of the axial sealing ring is pressed against the outer peripheral surface of the second end part. The double-flange sealing type axial expansion joint can absorb axial movement caused by the working of the pump body, and ensures that a pipeline connected with the pump body is safe and reliable.
Description
Technical Field
The invention relates to the technical field of pipe connection, in particular to a double-flange sealing type axial expansion joint.
Background
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art, at present, the pump body of a large dredger, such as a dredge pump or a high-pressure flushing pump, has a drift diameter of a pipeline connected between DN 500-DN 1200mm, and during dredging operation, the pipeline connected with the suction inlet end of the pump body has great axial movement due to the vibration of the pump body because the vibration of the pump body is difficult to avoid by the high-power dredge pump or the high-pressure flushing pump. Thus, a rigidly fixed mounted pipe must be provided with an effective axial expansion joint.
Commonly used axial expansion joints include metal bellows expansion joints and rubber expansion joints. The two expansion joints have the strength which is difficult to meet the severe working condition of long-term vibration and extension, the conditions of breakage and water leakage often occur, the normal dredging work of the ship is influenced, and even the potential safety hazard of water inlet of a pump chamber exists.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the embodiment of the invention provides a double-flange sealing type axial expansion joint which is arranged at the suction inlet end of a pump body and used for absorbing axial movement caused by the working of the pump body, and the safety and reliability of a pipeline connected with the pump body are ensured.
The double-flange sealing type axial expansion joint comprises a joint body pipe, wherein a first end part and a second end part are respectively formed at two ends of the joint body pipe; the double-flange assembly comprises an axial sealing flange and a plane sealing flange which are connected, the axial sealing flange and the plane sealing flange are sleeved on the second end part, an axial telescopic gap is formed between the axial sealing flange and the second end part, and an axial telescopic gap is formed between the plane sealing flange and the second end part; and the sealing assembly comprises an axial sealing ring positioned between the axial sealing flange and the plane sealing flange, the axial sealing ring is provided with a radial sealing surface which is pressed against the outer peripheral surface of the second end part, and the axial sealing flange and/or the plane sealing flange is provided with a radial inclined surface so that the radial sealing surface of the axial sealing ring is pressed against the outer peripheral surface of the second end part.
In an optional or preferred embodiment, an inner opening chamfer is formed on an inner end surface of the axial sealing flange, so that an axial sealing ring groove for placing the axial sealing ring is formed between the axial sealing flange and the planar sealing flange after the axial sealing flange and the planar sealing flange are connected, the axial sealing ring groove is arranged towards the second end, and the radial inclined surface is arranged on the axial sealing ring groove.
In an alternative or preferred embodiment, the inner end surface of the planar sealing flange and the radial bevel enclose the axial sealing ring groove.
In an alternative or preferred embodiment, the axial sealing ring is an annular sealing ring, and the cross section of the axial sealing ring is triangular.
In an alternative or preferred embodiment, the axial sealing flange and the planar sealing flange are connected by a plurality of bolts, so that the inner end surface of the planar sealing flange and the radial inclined surface clamp the corresponding side surface of the axial sealing ring together.
In an alternative or preferred embodiment, the axial sealing flange and the planar sealing flange are both provided with a plurality of bolt holes for the bolts to pass through.
In an alternative or preferred embodiment, the outer end face of the planar sealing flange is provided with a planar sealing groove, and a planar sealing ring is placed in the planar sealing groove.
In an alternative or preferred embodiment, after the double-flange assembly is connected to the suction port end of the pump body, the outer side end face of the planar sealing ring is pressed against the suction port end of the pump body.
In an alternative or preferred embodiment, the axial sealing ring is a rubber material member and the planar sealing ring is a rubber material member.
In an alternative or preferred embodiment, the first end is welded with a connecting flange.
Based on the technical scheme, the embodiment of the invention at least has the following beneficial effects: according to the technical scheme, the double-flange assembly is sealed with the second end part of the joint body pipe through the radial sealing surface of the axial sealing ring, an axial telescopic gap is formed between the axial sealing flange and the second end part, and an axial telescopic gap is formed between the plane sealing flange and the second end part; in addition, by arranging the radial inclined plane, after the axial sealing flange and the plane sealing flange are connected, the radial sealing surface of the axial sealing ring can be abutted against the outer peripheral surface of the second end part, and the sealing performance of the axial sealing ring is further ensured. The double-flange sealing type axial expansion joint can absorb axial movement caused by the working of the pump body, and ensures that a pipeline connected with the pump body is safe and reliable.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a half sectional view of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of circle A of FIG. 1;
FIG. 3 is an enlarged view of a portion of circle B of FIG. 2;
fig. 4 is a partially enlarged view of circle C in fig. 2.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it is to be understood that the positional or orientational relationships, such as those indicated by center, longitudinal, lateral, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise, axial, radial, circumferential, and the like, are based on the positional or orientational relationships shown in the drawings and are for convenience of description and simplicity of description only, and are not intended to 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 are not to be considered as limiting.
In the description of the present invention, the meaning of several is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present number, and larger, lower, inner, etc. are understood as including the present number unless specifically defined otherwise. Furthermore, the descriptions of first and second are only for the purpose of distinguishing between technical features, and are not to be construed as indicating or implying relative importance or implying any number or order of indicated technical features.
In the description of the present invention, unless otherwise expressly limited, terms such as set, arranged, mounted, connected, fixed and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in the present invention in consideration of the detailed contents of the technical solutions.
In the description of the present invention, unless otherwise expressly limited, a first feature may be located on or below a second feature in direct contact with the second feature, or the first feature and the second feature may be in indirect contact via intermediate media. Also, a first feature may be directly above or obliquely above a second feature, or merely that the first feature is at a higher level than the second feature. A first feature may be directly below or obliquely below a second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 to 4, an axial expansion joint of a double flange sealing type includes a joint body pipe 100, a double flange assembly 300, and a sealing assembly.
Wherein, a first end 101 and a second end 102 are formed at two ends of the joint body tube 100. The connecting flange 200 is welded on the first end portion 101, the double-flange assembly 300 comprises an axial sealing flange 321 and a plane sealing flange 311 which are connected, and the axial sealing flange 321 and the plane sealing flange 311 are sleeved on the second end portion 102. As shown in fig. 2, an axially extending and contracting gap is formed between the axial sealing flange 321 and the second end portion 102, and an axially extending and contracting gap is formed between the planar sealing flange 311 and the second end portion 102.
And the sealing assembly comprises an axial sealing ring 323 positioned between the axial sealing flange 321 and the plane sealing flange 311, wherein the axial sealing ring 323 is provided with a radial sealing surface 3231 pressed against the outer peripheral surface of the second end part 102, and the axial sealing flange 321 and/or the plane sealing flange 311 are provided with radial inclined surfaces so that the radial sealing surface 3231 of the axial sealing ring 323 is pressed against the outer peripheral surface of the second end part 102.
It can be understood that, both the axial sealing flange 321 and the planar sealing flange 311 can axially extend and retract along the second end portion 102 of the joint body tube 100, after the double-flange component 300 is connected with the suction port end of the pump body, because the pump body can vibrate during operation, a large axial float exists, and the double-flange component 300 is inevitably driven to axially float, at this time, the axial sealing flange 321 and the planar sealing flange 311 can axially extend and retract along the second end portion 102, and can absorb the axial float caused by the operation of the pump body; and the radial sealing surface 3231 of the axial sealing ring 323 abuts against the outer peripheral surface of the second end portion 102, and when the double-flange assembly 300 drives the axial sealing ring 323 to axially extend and retract, the axial sealing ring 323 always forms axial sealing with the second end portion 102, so that the sealing performance of the double-flange sealing type axial expansion joint is ensured.
A flat seal groove 312 is provided on the outer end surface of the flat seal flange 311, and a flat seal ring 313 is placed in the flat seal groove 312. It is noted that, in the present embodiment, the "inner end" and the "outer end" are the inner ends of the facing surfaces of the axial sealing flange 321 and the planar sealing flange 311, relative to the double flange assembly 300 itself, wherein the inner end and the outer end of the planar sealing flange 311 are shown as the direction D in fig. 2, and the inner end and the outer end of the axial sealing flange 321 are shown as the direction E in fig. 2.
When the double-flange assembly 300 is connected to the suction port end of the pump body, the outer end face of the flat sealing ring 313 is pressed against the suction port end of the pump body. The pipe originally connected to the pump body is connected to the connection flange 200 of the first end 101, the flow direction of the fluid medium being shown in fig. 1.
Preferably, the axial seal 323 is a rubber material member, and the flat seal 313 is a rubber material member. Of these, both the axial seal 323 and the planar seal 313 are preferably made of nitrile rubber.
In this embodiment, the radial inclined plane is disposed on the axial sealing flange 321, specifically, with reference to fig. 2 and 4, an inner end surface of the axial sealing flange 321 is provided with an inner chamfer, so that an axial sealing ring groove 322 for placing the axial sealing ring 323 is formed between the axial sealing flange 321 and the planar sealing flange 311 after the axial sealing flange 321 and the planar sealing flange 311 are connected, the axial sealing ring groove 322 is disposed toward the second end 102, and the radial inclined plane is disposed on the axial sealing ring groove 322.
The end surface of the inner side of the planar sealing flange 311 and the radial inclined surface enclose an axial sealing ring groove 322, as shown in fig. 4, the end surface of the inner side of the axial sealing flange 321 is provided with an inner opening chamfer, and therefore, the cross section of the sealing ring groove 322 is triangular. In addition, the axial seal ring 323 is an annular seal ring, and the cross section of the axial seal ring 323 is triangular, so that the seal ring groove 322 can be better matched. And, the radial slope of the axial seal 323 is radially inward and presses against the outer peripheral surface of the second end 102.
In other embodiments, an inner chamfer may be formed on the inner end surface of the planar sealing flange 311 to form an axial sealing ring groove, and it is understood that the radial slope is disposed on the planar sealing flange 311.
In other embodiments, inner chamfer angles may be formed on the inner end surface of the axial sealing flange 321 and the inner end surface of the planar sealing flange 311, and the inner chamfer angles may also form an axial sealing ring groove after the two are connected, which may be understood as that the axial sealing flange 321 and the planar sealing flange 311 both have a radial slope.
In this embodiment, the inner chamfer angle formed on the inner side end surface of the axial sealing flange 321 is 45 °, and in other embodiments, other angles may be selected, or a chamfer angle may be formed.
Specifically, the axial sealing flange 321 and the planar sealing flange 311 are connected by a plurality of bolts, so that the inner end surface of the planar sealing flange 311 and the radial inclined surface clamp the corresponding side surface of the axial sealing ring 323 together. It can be understood that the axial sealing ring 323 with a triangular cross section is more stable in the axial movement process along the second end portion, for example, when the axial sealing ring groove 322 moves towards the outer end of the second end portion 102, the radial slope on the axial sealing ring groove 322 pushes the axial sealing ring 323 to move, when the axial sealing ring groove 322 moves towards the inner end of the second end portion 102, the inner end face of the planar sealing flange 311 pushes the axial sealing ring 323 to move, and the radial sealing face 3231 of the axial sealing ring 323 always presses against the second end portion 102, so as to ensure the sealing performance.
In addition, the axial sealing flange 321 and the planar sealing flange 311 are each opened with a plurality of bolt holes 324 through which bolts pass. When the pump is installed, the axial sealing flange 321 and the plane sealing flange 311 are connected and installed with the flange at the suction inlet end of the pump body.
While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. An axial expansion joint of the double-flange sealing type, characterized in that: comprises that
The connector comprises a connector body pipe (100), wherein a first end part (101) and a second end part (102) are respectively formed at two ends of the connector body pipe (100);
a double-flange assembly (300), wherein the double-flange assembly (300) comprises an axial sealing flange (321) and a plane sealing flange (311) which are connected, the axial sealing flange (321) and the plane sealing flange (311) are sleeved on the second end portion (102), an axially telescopic gap is formed between the axial sealing flange (321) and the second end portion (102), and an axially telescopic gap is formed between the plane sealing flange (311) and the second end portion (102); and
a seal assembly comprising an axial seal ring (323) between the axial seal flange (321) and the planar seal flange (311), the axial seal ring (323) having a radial seal surface (3231) that presses against the outer peripheral surface of the second end portion (102), the axial seal flange (321) and/or the planar seal flange (311) having a radial taper such that the radial seal surface (3231) of the axial seal ring (323) presses against the outer peripheral surface of the second end portion (102).
2. A double-flange-seal-type axial expansion joint according to claim 1, wherein: an inner opening chamfer is formed in the end face of the inner side of the axial sealing flange (321), so that an axial sealing ring groove (322) for placing the axial sealing ring (323) is formed between the axial sealing flange (321) and the plane sealing flange (311) after the axial sealing flange (321) is connected with the plane sealing flange (311), the axial sealing ring groove (322) faces the second end portion (102), and the radial inclined plane is arranged on the axial sealing ring groove (322).
3. A double-flange-seal-type axial expansion joint according to claim 2, wherein: the axial sealing ring groove (322) is formed by enclosing the end face of the inner side of the plane sealing flange (311) and the radial inclined plane.
4. A double flange seal type axial expansion joint according to claim 3, wherein: the axial sealing ring (323) is an annular sealing ring, and the cross section of the axial sealing ring (323) is triangular.
5. The double flange seal type axial expansion joint as claimed in claim 4, wherein: the axial sealing flange (321) is connected with the plane sealing flange (311) through a plurality of bolts, so that the end surface of the inner side of the plane sealing flange (311) and the radial inclined surface clamp the corresponding side surface of the axial sealing ring (323) together.
6. The double flange seal type axial expansion joint as claimed in claim 5, wherein: the axial sealing flange (321) and the plane sealing flange (311) are both provided with a plurality of bolt holes (324) for the bolts to pass through.
7. A double-flange-seal-type axial expansion joint according to any one of claims 1 to 6, wherein: the outer side end face of the plane sealing flange (311) is provided with a plane sealing groove (312), and a plane sealing ring (313) is placed in the plane sealing groove (312).
8. The double flange seal type axial expansion joint as claimed in claim 7, wherein: after the double-flange component (300) is connected to the suction inlet end of the pump body, the outer side end face of the planar sealing ring (313) is pressed against the suction inlet end of the pump body.
9. The double flange seal type axial expansion joint as claimed in claim 7, wherein: the axial sealing ring (323) is a rubber material component, and the plane sealing ring (313) is a rubber material component.
10. A double-flange-seal-type axial expansion joint according to any one of claims 1 to 6, wherein: a connecting flange (200) is welded on the first end portion (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010366577.XA CN111637295A (en) | 2020-04-30 | 2020-04-30 | Double-flange sealing type axial expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010366577.XA CN111637295A (en) | 2020-04-30 | 2020-04-30 | Double-flange sealing type axial expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111637295A true CN111637295A (en) | 2020-09-08 |
Family
ID=72326726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010366577.XA Pending CN111637295A (en) | 2020-04-30 | 2020-04-30 | Double-flange sealing type axial expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111637295A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105031A (en) * | 1985-08-31 | 1987-03-18 | 阿金泰克股份公司 | Flange connects |
| US4832377A (en) * | 1986-09-05 | 1989-05-23 | Usui Kokusai Sangyo Kabushiki Kaisha | Arrangement for fixing end of thin-walled pipe to flange coupling |
| DE9403961U1 (en) * | 1994-03-09 | 1994-05-11 | Connectorate Ag, Dottikon | Multi-part sealing device |
| WO2008058597A1 (en) * | 2006-11-16 | 2008-05-22 | Hydac Process Technology Gmbh | Coupling apparatus |
| CN204201320U (en) * | 2014-09-28 | 2015-03-11 | 莱芜钢铁集团有限公司 | Pipeline connecting device |
| CN204284739U (en) * | 2014-11-05 | 2015-04-22 | 无锡市明富管道附件有限公司 | Scalable pair of flange force transmission joint |
| CN204300562U (en) * | 2014-11-26 | 2015-04-29 | 中国石油集团西部钻探工程有限公司 | Rotary-type adpting flange device |
| CN106122626A (en) * | 2016-08-22 | 2016-11-16 | 武汉大禹阀门股份有限公司 | A kind of extension flange structure |
| CN206072601U (en) * | 2016-07-25 | 2017-04-05 | 丁旭东 | Wedge compression self-energized seal flange |
| CN212319085U (en) * | 2020-04-30 | 2021-01-08 | 广州文冲船厂有限责任公司 | Double-flange sealing type expansion joint |
-
2020
- 2020-04-30 CN CN202010366577.XA patent/CN111637295A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105031A (en) * | 1985-08-31 | 1987-03-18 | 阿金泰克股份公司 | Flange connects |
| US4832377A (en) * | 1986-09-05 | 1989-05-23 | Usui Kokusai Sangyo Kabushiki Kaisha | Arrangement for fixing end of thin-walled pipe to flange coupling |
| DE9403961U1 (en) * | 1994-03-09 | 1994-05-11 | Connectorate Ag, Dottikon | Multi-part sealing device |
| WO2008058597A1 (en) * | 2006-11-16 | 2008-05-22 | Hydac Process Technology Gmbh | Coupling apparatus |
| CN204201320U (en) * | 2014-09-28 | 2015-03-11 | 莱芜钢铁集团有限公司 | Pipeline connecting device |
| CN204284739U (en) * | 2014-11-05 | 2015-04-22 | 无锡市明富管道附件有限公司 | Scalable pair of flange force transmission joint |
| CN204300562U (en) * | 2014-11-26 | 2015-04-29 | 中国石油集团西部钻探工程有限公司 | Rotary-type adpting flange device |
| CN206072601U (en) * | 2016-07-25 | 2017-04-05 | 丁旭东 | Wedge compression self-energized seal flange |
| CN106122626A (en) * | 2016-08-22 | 2016-11-16 | 武汉大禹阀门股份有限公司 | A kind of extension flange structure |
| CN212319085U (en) * | 2020-04-30 | 2021-01-08 | 广州文冲船厂有限责任公司 | Double-flange sealing type expansion joint |
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