CN113586820B - Double-sealing corrugated pipe stop valve and method thereof - Google Patents
Double-sealing corrugated pipe stop valve and method thereof Download PDFInfo
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- CN113586820B CN113586820B CN202110807281.1A CN202110807281A CN113586820B CN 113586820 B CN113586820 B CN 113586820B CN 202110807281 A CN202110807281 A CN 202110807281A CN 113586820 B CN113586820 B CN 113586820B
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- sealing
- corrugated pipe
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- extension pipeline
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
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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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
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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
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a double-sealing corrugated pipe stop valve which comprises a stop valve main body, wherein a power assembly for closing an operation switch is arranged at the top of the stop valve main body, and sealing mechanisms are arranged on two sides of the stop valve main body; sealing mechanism includes the bellows with stop valve main part fixed connection and the extension pipeline of one side, the first locking flange of the inboard equal fixedly connected with of extension pipeline and bellows, the inside first seal assembly that is equipped with of extension pipeline, the bellows is inside to be equipped with second seal assembly, is in between screw ring and the rubber seal strip through the gap that forms between extension pipeline and the bellows, utilizes the screw thread to carry out primary seal, utilizes the screw thread to carry out secondary seal to the extrusion sealing ring when the inside rotation of annular seal piece is fixed, utilizes the extrusion ring extrusion rubber seal strip, makes the rubber seal strip carry out the cubic and seals at screw ring top and extension pipeline extrusion inflation.
Description
Technical Field
The invention belongs to the technical field of corrugated pipe stop valves, and particularly relates to a double-seal corrugated pipe stop valve and a method thereof.
Background
The corrugated pipe stop valve is also called a corrugated pipe sealing stop valve, a metal barrier is formed between a fluid medium and the atmosphere through automatic roll welding, the zero leakage design of the valve rod is ensured, the corrugated pipe structure is adopted in the corrugated pipe stop valve, and the lower end of a stainless steel corrugated pipe is welded on the valve rod to prevent process fluid from corroding the valve rod. The other end is arranged between the valve body and the valve cover to form static seal. Adopt dual sealed design if the bellows inefficacy valve rod filler also can avoid leaking, the bellows welds in the operating performance that the valve rod remains stable, avoids because valve plug vibration causes the valve rod vibration. It is most suitable for the pipelines of steam, inflammable, explosive, heat conducting oil, high purity, toxic and other mediums.
Traditional bellows stop valve does not have a better seal structure in the in-service use in-process, and the sealing strip that traditional bellows stop valve is used for sealing need the periodic replacement maintenance to solve long-term use and produces the condition that not hard up sealed and the gap of long-term erosion output leads to influencing sealed effect in long-term use, needs a bellows stop valve and method to realize need not replacing the structure of maintenance method and solves this problem.
Disclosure of Invention
The invention aims to provide a double-sealing corrugated pipe stop valve and a method thereof, which aim to solve the problems that the conventional sealing strip for sealing the corrugated pipe stop valve needs to be replaced and maintained periodically in the long-term use process to solve the problem that the sealing effect is influenced due to the loose seal and the gap generated by long-term corrosion in the long-term use process.
In order to achieve the purpose, the invention provides the following technical scheme: a double-sealing corrugated pipe stop valve comprises a stop valve main body, wherein a power assembly for closing an operation switch is arranged at the top of the stop valve main body, and sealing mechanisms are arranged on two sides of the stop valve main body;
the sealing mechanism comprises a corrugated pipe fixedly connected with the stop valve main body and an extension pipeline on one side, the inner sides of the extension pipeline and the corrugated pipe are fixedly connected with a first locking flange, a first sealing assembly is arranged in the extension pipeline, and a second sealing assembly is arranged in the corrugated pipe;
the first sealing assembly comprises an annular sealing block, the annular sealing block is fixedly connected to the inner side of the extension pipeline and arranged at one end close to the corrugated pipe, and the section of the annular sealing block is L-shaped;
the second seal assembly comprises a fixed block, the fixed block is arranged on one side inside the corrugated pipe in a sliding mode, one end of the fixed block bottom is fixedly connected with an extrusion ring inserted into the annular seal block, the corrugated pipe is close to one end of the extension pipeline and is fixedly connected with a threaded ring and formed by machining as a whole, the threaded ring is in threaded connection with the annular seal block, the extrusion ring is arranged on the top of the extrusion ring, a seal ring is arranged between the threaded ring and the annular seal block, and a rubber seal strip is arranged between the top of the threaded ring and the extension pipeline and is arranged on one side of the extrusion ring.
Preferably, a plurality of first locking bolts capable of locking the two first locking flanges are connected between the two first locking flanges in a threaded manner, and the top end of the fixing block extends out of the outer side of the corrugated pipe and is fixedly connected with the first locking flanges on the corrugated pipe through the second locking bolts.
Preferably, one end of the extension pipeline, which is far away from the corrugated pipe, is fixedly connected with a first locking hole, and a plurality of threaded holes are formed in the first locking hole.
Preferably, the power assembly comprises a second locking flange fixedly connected to the top of the stop valve body, a switch transmission mechanism is fixedly connected to the top of the second locking flange, and an operating wheel is fixedly connected to the top of the switch transmission mechanism.
Preferably, a second locking hole capable of locking the fixing block and the first locking flange on the corrugated pipe is formed between the fixing block and the first locking flange on the corrugated pipe.
Preferably, a plurality of first locking bolts are arranged on each of the two first locking flanges and are in threaded connection with the two first locking flanges through the plurality of first locking bolts.
A use method of a double-seal corrugated pipe stop valve comprises the following specific steps:
the method comprises the following steps: butt joint, firstly, placing the sealing ring inside the annular sealing block, connecting the sealing ring to the annular sealing block through a rotary corrugated pipe by using a threaded ring, then taking the rubber sealing strip and inserting the rubber sealing strip between the top of the threaded ring and the extension pipeline, and enabling the rubber sealing strip to be pressed into the extension pipeline by a pressing ring on one side of the bottom of the fixed block;
step two: locking, wherein the fixing block and the first locking flange prop against the rear side of the rubber sealing strip, the fixing block and the first locking flange on the corrugated pipe are fixed by using a second locking bolt, the extension pipeline and the first locking flange on the corrugated pipe are fixed by using the first locking bolt, and the corrugated pipe is fixedly connected and communicated with the stop valve main body through the extension pipeline;
step three, sealing:
1. after the installation, a gap formed between the extension pipeline and the corrugated pipe is positioned between the threaded ring and the rubber sealing strip, and primary sealing is carried out by utilizing threads;
2. the thread ring is rotated and fixed towards the inside of the annular sealing block, and the sealing ring is extruded to perform secondary sealing;
3. the extrusion ring is used for extruding the rubber sealing strip, so that the rubber sealing strip is extruded and expanded between the top of the threaded ring and the extension pipeline for three-time sealing, and the sealing effect in the whole process is optimal;
step four: adjust, sealed the appearance in long-time use not hard up or the erosion damage back appears, utilize rotatory first locking bolt, constantly be with two first locking flanges inboard removal, it is that the distance constantly reduces between bellows and the extension pipeline, can drive fixed block and extrusion ring constantly extrudees the rubber sealing strip, make the gap that not hard up appears and the gap that the erosion produced be extruded once more and fill, play the effect of sealed compensation, can try to use and do not influence sealed effect.
The invention has the technical effects and advantages that: 1. the sealing ring is extruded by the extrusion ring to perform tertiary sealing between the top of the threaded ring and the extension pipeline by means of extrusion expansion of the rubber sealing strip, the sealing effect in the whole process is optimal, and the whole process is communicated;
2. utilize rotatory first locking bolt, constantly be with two first locking flanges to the inboard removal, it constantly dwindles to be the distance between bellows and the extension pipeline, can drive fixed block and extrusion ring and constantly extrude the rubber seal strip, make the gap that becomes flexible the appearance and corrode the gap that produces extrude once more and fill, play the effect of sealed compensation, can try to use and do not influence sealed effect, the sealed effect of whole process is best and be convenient for operate, because of can realizing sealed compensation, thereby reduce cost of maintenance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a perspective view of the sealing mechanism of the present invention;
FIG. 4 is a cross-sectional view of the sealing mechanism of the present invention;
FIG. 5 is an enlarged view of a portion A of FIG. 4 according to the present invention;
fig. 6 is a schematic view illustrating an installation structure of the squeeze ring according to the present invention.
In the figure: 1. an operating wheel; 2. a second locking flange; 3. a first locking hole; 4. a sealing mechanism; 5. a shut-off valve body; 6. a switch transmission mechanism; 7. a threaded ring; 8. a fixed block; 9. a first locking flange; 10. a first locking bolt; 11. an extension duct; 12. a bellows; 13. an annular seal block; 14. a rubber seal strip; 15. a seal ring; 16. the ring is pressed.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
The invention provides a double-sealing corrugated pipe stop valve as shown in figures 1, 3, 4 and 5, which comprises a stop valve main body 5, wherein the top of the stop valve main body 5 is provided with a power assembly for closing an operation switch, and two sides of the stop valve main body 5 are provided with sealing mechanisms 4;
the sealing mechanism 4 comprises a corrugated pipe 12 fixedly connected with the stop valve main body 5 and an extension pipeline 11 at one side, the inner sides of the extension pipeline 11 and the corrugated pipe 12 are fixedly connected with a first locking flange 9, a first sealing assembly is arranged in the extension pipeline 11, and a second sealing assembly is arranged in the corrugated pipe 12;
the first sealing assembly comprises an annular sealing block 13, the annular sealing block 13 is fixedly connected to the inner side of the extension pipeline 11 and is arranged at one end close to the corrugated pipe 12, and the section of the annular sealing block 13 is L-shaped;
the second seal assembly includes fixed block 8, the gliding setting in bellows 12 one side of fixed block 8, the inside extrusion ring 16 of annular seal piece 13 is inserted to 8 bottom fixedly connected with one end of fixed block, bellows 12 is close to extension pipeline 11's one end fixedly connected with screw ring 7 and forms as an organic whole, screw ring 7 and annular seal piece 13 threaded connection, extrusion ring 16 sets up in the top of extrusion ring 16, be provided with sealing ring 15 between screw ring 7 and the annular seal piece 13, be provided with rubber sealing strip 14 between screw ring 7 top and the extension pipeline 11 and rubber sealing strip 14 sets up in extrusion ring 16 one side, utilize the screw thread to carry out primary seal, utilize screw ring 7 to extrude sealing ring 15 and carry out secondary seal to annular seal piece 13 inside rotation fixed simultaneously, utilize extrusion ring 16 to extrude rubber sealing strip 14, make rubber sealing strip 14 extrude the inflation and carry out tertiary seal between screw ring 7 top and extension pipeline 11, whole process sealing effect is best.
As shown in fig. 3, a plurality of first locking bolts 10 capable of locking the two first locking flanges 9 are connected between the two first locking flanges 9 by screw threads, the top end of the fixing block 8 extends out of the corrugated pipe 12 and is fixedly connected with the first locking flanges 9 on the corrugated pipe 12 by the second locking bolts, the fixing block 8 and the first locking flanges 9 on the corrugated pipe 12 are fixed by the second locking bolts, the extension pipe 11 and the first locking flanges 9 on the corrugated pipe 12 are fixed by the first locking bolts 10, and the corrugated pipe 12 is fixedly connected and communicated with the stop valve main body 5 by the extension pipe 11.
As shown in fig. 1 and 6, one end of the extension pipe 11, which is far away from the corrugated pipe 12, is fixedly connected with a first locking hole 3, a plurality of threaded holes are formed in the first locking hole 3, the power assembly comprises a second locking flange 2 fixedly connected to the top of the stop valve main body 5, a switch transmission mechanism 6 is fixedly connected to the top of the second locking flange 2, and an operation wheel 1 is fixedly connected to the top of the switch transmission mechanism 6.
As shown in fig. 3 and 5, a second locking hole is formed between the fixing block 8 and the first locking flange 9 on the corrugated pipe 12, the two first locking flanges 9 are both provided with a plurality of first locking holes 3, and the plurality of first locking bolts 10 are in threaded connection with the two first locking flanges 9 through the plurality of first locking holes 3.
The working principle is as follows: as shown in fig. 1, 4 and 5, firstly, a sealing ring 15 is placed inside an annular sealing block 13, the sealing ring is connected to the annular sealing block 13 by a thread ring 7 through rotating a corrugated pipe 12, then a rubber sealing strip 14 is taken out and inserted between the top of the thread ring 7 and an extension pipe 11, a pressing ring 16 at the bottom side of a fixed block 8 presses the rubber sealing strip 14 into the extension pipe 11, the fixed block 8 and a first locking flange 9 press against the rear side of the rubber sealing strip 14, the fixed block 8 and the first locking flange 9 on the corrugated pipe 12 are fixed by a second locking bolt, the extension pipe 11 and the first locking flange 9 on the corrugated pipe 12 are fixed by the first locking bolt 10, the corrugated pipe 12 is fixedly connected and communicated with a stop valve main body 5 through the extension pipe 11, after installation, as shown in fig. 4 and 5, a gap formed between the extension pipe 11 and the corrugated pipe 12 is positioned between the thread ring 7 and the rubber sealing strip 14, the sealing ring is rotated and fixed towards the inside of the annular sealing block 13 by utilizing the screw thread to carry out primary sealing, the sealing ring 15 is extruded to carry out secondary sealing while the screw thread ring 7 is rotated and fixed towards the inside of the annular sealing block 13, the rubber sealing strip 14 is extruded and expanded between the top of the screw thread ring 7 and the extension pipeline 11 by utilizing the extrusion ring 16 to carry out tertiary sealing, the sealing effect in the whole process is optimal, and the whole process is communicated, as shown in figures 1 and 5, after the sealing is loosened or corroded and damaged in the long-time use process, the first locking bolt 10 is rotated to continuously move the two first locking flanges 9 inwards, so that the distance between the corrugated pipe 12 and the extension pipeline 11 is continuously reduced, the fixing block 8 and the extrusion ring 16 can be driven to continuously extrude the rubber sealing strip 14, and the gaps generated by loosening and corrosion are extruded and filled again, the sealing compensation effect is achieved, the sealing effect can be tried to be used without being influenced, the sealing effect in the whole process is optimal, the operation is convenient, and the sealing compensation can be achieved, so that the maintenance cost is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (4)
1. A double-sealed bellows stop valve, includes stop valve main part (5), its characterized in that: the top of the stop valve main body (5) is provided with a power assembly for closing an operation switch, and two sides of the stop valve main body (5) are provided with sealing mechanisms (4);
the sealing mechanism (4) comprises a corrugated pipe (12) fixedly connected with the stop valve main body (5) and an extension pipeline (11) on one side, the inner sides of the extension pipeline (11) and the corrugated pipe (12) are fixedly connected with a first locking flange (9), a first sealing assembly is arranged in the extension pipeline (11), and a second sealing assembly is arranged in the corrugated pipe (12);
the first sealing assembly comprises an annular sealing block (13), the annular sealing block (13) is fixedly connected to the inner side of the extension pipeline (11) and arranged at one end close to the corrugated pipe (12), and the cross section of the annular sealing block (13) is L-shaped;
the second sealing assembly comprises a fixing block (8), the fixing block (8) is arranged on one side inside the corrugated pipe (12) in a sliding mode, the top end of the fixing block (8) extends out of the outer side of the corrugated pipe (12) and is fixedly connected with a first locking flange (9) on the corrugated pipe (12) through a second locking bolt, the bottom of the fixing block (8) is fixedly connected with an extrusion ring (16) of which one end is inserted into the annular sealing block (13), one end, close to the extension pipeline (11), of the corrugated pipe (12) is fixedly connected with a threaded ring (7) and is formed by integral processing, the threaded ring (7) is in threaded connection with the annular sealing block (13), a sealing ring (15) is arranged between the threaded ring (7) and the annular sealing block (13), a rubber sealing strip (14) is arranged between the top of the threaded ring (7) and the extension pipeline (11), and the rubber sealing strip (14) is arranged on one side of the extrusion ring (16);
a plurality of first locking holes (3) are formed in the first locking flanges (9), and a plurality of first locking bolts (10) are in threaded connection with the first locking flanges (9) through the first locking holes (3).
2. A double seal bellows shut-off valve according to claim 1, wherein: the power assembly comprises a second locking flange (2) fixedly connected to the top of the stop valve body (5), a switch transmission mechanism (6) is fixedly connected to the top of the second locking flange (2), and an operating wheel (1) is fixedly connected to the top of the switch transmission mechanism (6).
3. A double seal bellows shut-off valve according to claim 1 wherein: and a second locking hole capable of locking the fixing block (8) and the first locking flange (9) on the corrugated pipe (12) is formed between the fixing block and the first locking flange.
4. A method of using a double seal bellows shut-off valve according to any of claims 1-3, comprising the steps of:
the method comprises the following steps: butt joint; firstly, a sealing ring (15) is placed on the inner side of an annular sealing block (13), the sealing ring is connected to the annular sealing block (13) through a rotary corrugated pipe (12) by utilizing a threaded ring (7) in a threaded manner, and then a rubber sealing strip (14) is taken out and plugged between the top of the threaded ring (7) and an extension pipeline (11), so that the rubber sealing strip (14) is pressed into the extension pipeline (11) by a pressing ring (16) on one side of the bottom of a fixing block (8);
step two: locking; the fixing block (8) and the first locking flange (9) prop against the rear side of the rubber sealing strip (14), the fixing block (8) and the first locking flange (9) on the corrugated pipe (12) are fixed through a second locking bolt, the extension pipeline (11) and the first locking flange (9) on the corrugated pipe (12) are fixed through a first locking bolt (10), and the corrugated pipe (12) is fixedly connected and communicated with the stop valve main body (5) through the extension pipeline (11);
step three, sealing;
1) After the installation, a gap formed between the extension pipeline (11) and the corrugated pipe (12) is positioned between the threaded ring (7) and the rubber sealing strip (14), and primary sealing is carried out by utilizing threads;
2) The threaded ring (7) is used for rotating and fixing the inner part of the annular sealing block (13) and simultaneously extruding the sealing ring (15) for secondary sealing;
3) Extruding the rubber sealing strip (14) by using the extruding ring (16) to ensure that the rubber sealing strip (14) is extruded and expanded between the top of the threaded ring (7) and the extension pipeline (11) to carry out three times of sealing, and the sealing effect in the whole process is optimal;
step four: adjusting; after the sealing is loosened or corroded and damaged in the long-time use process, the first locking bolt (10) is rotated, the two first locking flanges (9) are moved to the inner side, the distance between the corrugated pipe (12) and the extension pipeline (11) is continuously reduced, the fixing block (8) and the extrusion ring (16) can be driven to continuously extrude the rubber sealing strip (14), the gap generated by the loosening and the gap generated by corrosion are extruded and filled again, the sealing compensation effect is achieved, the use can be tried, and the sealing effect is not influenced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110807281.1A CN113586820B (en) | 2021-07-16 | 2021-07-16 | Double-sealing corrugated pipe stop valve and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110807281.1A CN113586820B (en) | 2021-07-16 | 2021-07-16 | Double-sealing corrugated pipe stop valve and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113586820A CN113586820A (en) | 2021-11-02 |
| CN113586820B true CN113586820B (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110807281.1A Active CN113586820B (en) | 2021-07-16 | 2021-07-16 | Double-sealing corrugated pipe stop valve and method thereof |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0926417A3 (en) * | 1997-12-19 | 2002-10-02 | Manfred Reckzeh | Press-fitting for corrugated pipes |
| CN207921539U (en) * | 2018-01-30 | 2018-09-28 | 广州岭南穗粮谷物股份有限公司 | Grain absorber and its pipeline sealing device |
| CN210034740U (en) * | 2019-01-28 | 2020-02-07 | 江苏远通波纹管有限公司 | Fully-sealed anti-aging high-temperature and high-pressure rotary compensator |
| CN210600578U (en) * | 2019-08-14 | 2020-05-22 | 河北世纪金属结构有限公司 | Sealing rubber pad for connecting corrugated pipe |
| CN211010298U (en) * | 2019-11-25 | 2020-07-14 | 孙婧 | Sealing device for valve connection |
| CN212004463U (en) * | 2020-03-16 | 2020-11-24 | 广东精工阀门有限公司 | Corrugated pipe stop valve without fluid loss |
| CN212868875U (en) * | 2020-09-09 | 2021-04-02 | 泰州诚邦不锈钢有限公司 | Corrosion-resistant flange for high-speed rail |
| CN112648457A (en) * | 2020-12-21 | 2021-04-13 | 江苏贝特管件有限公司 | Composite sealing structure and rotary compensator adopting same |
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2021
- 2021-07-16 CN CN202110807281.1A patent/CN113586820B/en active Active
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