CN113847480B - High-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe - Google Patents
High-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe Download PDFInfo
- Publication number
- CN113847480B CN113847480B CN202111172285.3A CN202111172285A CN113847480B CN 113847480 B CN113847480 B CN 113847480B CN 202111172285 A CN202111172285 A CN 202111172285A CN 113847480 B CN113847480 B CN 113847480B
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- inclined surface
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- sealing
- sealing layer
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 98
- 239000010935 stainless steel Substances 0.000 title claims abstract description 98
- 230000007797 corrosion Effects 0.000 title claims abstract description 19
- 238000005260 corrosion Methods 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 104
- 210000001503 joint Anatomy 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 241000826860 Trapezium Species 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000005457 optimization Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
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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
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of 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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/036—Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
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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
- F16L23/167—Flanged joints characterised by the sealing means in connection with the appearance or detection of leaks
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a high-strength corrosion-resistant ocean engineering stainless steel thick-walled pipe which comprises a stainless steel pipe body, wherein the stainless steel pipe body comprises a plurality of first stainless steel pipes, the end parts of the first stainless steel pipes are butted with second stainless steel pipes, the outer sides of the first stainless steel pipes and the second stainless steel pipes are fixedly connected with butted locking parts, the edge part of the first stainless steel pipe, which is close to the inner side wall, is provided with a first inclined surface, the edge part of the second stainless steel pipe, which is close to the inner side wall, is provided with a third inclined surface, the first inclined surface is matched with the third inclined surface, a sealing layer is arranged between the first inclined surface and the third inclined surface, the edge part of the first stainless steel pipe, which is close to the outer side wall, is provided with an annular notch, the edge part of the second stainless steel pipe, which is close to the outer side wall, is provided with a groove, the section of the annular embedded notch and the second inclined surface is trapezoidal, the groove is provided with a sealing part, and one side of the sealing part, which is close to the groove, is provided with a plurality of sensors in an annular shape. The invention has better installation sealing performance of the pipeline, has the capability of leakage detection and provides convenience for maintenance of ocean engineering.
Description
Technical Field
The invention relates to the technical field of pipeline connection, in particular to a high-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe.
Background
Ocean engineering aims at developing, utilizing, protecting and recovering ocean resources, and the engineering main body is positioned in newly-built, reconstructed and expanded engineering from a coastline to one side of the sea, pipelines are commonly used as main transportation tools in ocean engineering, however, the ocean engineering pipelines have the problems of leakage and the like after being laid, leakage points are not easy to find, and great inconvenience is brought to the development and maintenance of the ocean engineering.
Disclosure of Invention
The invention aims to provide a high-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe, which aims to solve the problems.
In order to achieve the purpose, the invention provides the following scheme:
the utility model provides a corrosion-resistant ocean engineering stainless steel thick-walled pipe of excelling in, includes the stainless steel body, the stainless steel body includes a plurality of first stainless steel pipes, first stainless steel pipe tip has the nonrust steel pipe of second to butt joint, first stainless steel pipe, the nonrust steel pipe outside fixedly connected with butt joint locking portion of second, the limit portion that first nonrust steel pipe is close to the inside wall is equipped with first inclined plane, the limit portion that the nonrust steel pipe of second is close to the inside wall is equipped with the third inclined plane, first inclined plane, third inclined plane phase-match, be equipped with the sealing layer between first inclined plane, the third inclined plane, the limit portion that first nonrust steel pipe is close to the outside wall is equipped with annular opening, the limit portion that the nonrust steel pipe of second is close to the outside wall is equipped with the second inclined plane, annular opening, second inclined plane constitution cross-section are trapezoidal recess, the recess is embedded to be equipped with the sealing, the sealing is close to one side annular of recess is equipped with a plurality of sensors.
Preferably, the butt joint locking part comprises a first flange fixedly connected to the outer side of the first stainless steel pipe and a second flange fixedly connected to the outer side of the second stainless steel pipe, a plurality of through holes are formed in the first flange and the second flange respectively, a screw rod is arranged in the through hole corresponding to the first flange and the second flange in a penetrating mode, and the end portion of the screw rod is connected with a nut in a threaded mode.
Preferably, the sealing layer includes fixed connection first sealing layer on the first inclined plane, fixed connection be in third sealing layer on the third inclined plane, first sealing layer is kept away from first inclined plane one side fixedly connected with second sealing layer, the third sealing layer is kept away from third inclined plane one side fixedly connected with fourth sealing layer.
Preferably, the first sealing layer and the third sealing layer are made of elastic materials, and the second sealing layer and the fourth sealing layer are made of adhesive materials.
Preferably, the sealing portion is established including inlaying sealing ring in the recess, sealing ring cross sectional shape is trapezium structure, the sealing ring with the recess phase-match, sealing ring outside cover has annular clamp, and is a plurality of the sensor ring shape distributes on the sealing ring inside wall.
Preferably, the annular groove has been seted up to annular clamp inside wall, annular clamp includes two semi-rings, semi-ring both ends are fixedly connected with the convex shoulder respectively, and are adjacent the convex shoulder passes through screw fixed connection, annular groove width with sealing ring width phase-match.
Preferably, the first stainless steel pipe and the second stainless steel pipe are made of high-strength corrosion-resistant ocean engineering stainless steel materials, and the high-strength corrosion-resistant ocean engineering stainless steel materials comprise the following elements: mn, si, cr, ni, mo, N, V, Y, la, C, S, P, fe and unavoidable impurities.
Preferably, the first stainless steel tube and the second stainless steel tube have the same thickness.
The invention has the following technical effects:
according to the invention, the first inclined surface and the third inclined surface are arranged at the butt joint part of the first stainless steel pipe and the second stainless steel pipe, the first inclined surface and the third inclined surface are pressed together through the butt joint locking part, so that the first inclined surface and the third inclined surface are mutually pressed, meanwhile, the first inclined surface can provide an outward force to support the third inclined surface, a sealing layer between the first inclined surface and the third inclined surface is pressed, the annular notch and the second inclined surface form a groove with a trapezoidal section, the sealing part is embedded in the groove, the sealing part can be pressed towards the direction of the groove during sealing, the groove is also pressed by the sealing part due to the trapezoidal structure, a better sealing effect is achieved, when leakage occurs between the first stainless steel pipe and the second stainless steel pipe, the sensor detects the leaked liquid, and sends a signal to the ground monitoring station, and maintenance of a leakage point is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial enlarged view of A in FIG. 1;
FIG. 3 is a schematic view of a first flange structure;
FIG. 4 is a schematic view of a ring clamp;
FIG. 5 is a cross-sectional view of the ring clamp;
FIG. 6 is a schematic view of a first stainless steel tube;
FIG. 7 is a schematic view of a second stainless steel tube;
FIG. 8 is a schematic view of a ring clamp according to a second embodiment of the present invention;
fig. 9 is a schematic cross-sectional view of a wedge ring according to the second embodiment.
Wherein, 1, a first stainless steel tube; 101. a first sealing layer; 102. a second sealing layer; 103. an annular gap; 104. a first inclined plane; 2. a second stainless steel tube; 201. a third sealing layer; 202. a fourth sealing layer; 203. a second inclined plane; 204. a third inclined plane; 3. a first flange; 301. a via hole; 4. a second flange; 5. a screw; 6. a nut; 7. an annular hoop; 701. an annular groove; 702. shouldering; 703. a screw; 704. a snap ring; 705. inclined threads; 706. locking a ring; 707. a wedge ring; 708. opening the gap; 8. a seal ring; 9. a sensor.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The first embodiment is as follows:
referring to fig. 1-7, the embodiment provides a high-strength corrosion-resistant thick-walled ocean engineering stainless steel pipe, which includes a stainless steel pipe body, the stainless steel pipe body includes a plurality of first stainless steel pipes 1, the end of each first stainless steel pipe 1 is butted with a second stainless steel pipe 2, the outer sides of the first stainless steel pipe 1 and the second stainless steel pipe 2 are fixedly connected with a butt-joint locking portion, the edge portion of the first stainless steel pipe 1 close to the inner side wall is provided with a first inclined surface 104, the edge portion of the second stainless steel pipe 2 close to the inner side wall is provided with a third inclined surface 204, the first inclined surface 104 is matched with the third inclined surface 204, a sealing layer is arranged between the first inclined surface 104 and the third inclined surface 204, the edge portion of the first stainless steel pipe 1 close to the outer side wall is provided with an annular notch 103, the edge portion of the second stainless steel pipe 2 close to the outer side wall is provided with a second inclined surface 203, the annular notch 103 and the second inclined surface 203 form a groove with a trapezoidal cross section, a sealing portion is embedded in the groove, and one side of the sealing portion close to the groove is provided with a plurality of the sensor 9.
According to the invention, the first inclined surface 104 and the third inclined surface 204 are arranged at the butt joint of the first stainless steel pipe 1 and the second stainless steel pipe 2, the first stainless steel pipe 1 and the second stainless steel pipe 2 are pressed together through the butt joint locking part, so that the first inclined surface 104 and the third inclined surface 204 are mutually pressed, meanwhile, the first inclined surface 104 can provide an outward force to support the third inclined surface 204, a sealing layer between the first inclined surface 104 and the third inclined surface 204 is pressed, the annular notch 103 and the second inclined surface 203 form a groove with a trapezoidal section, the sealing part is embedded in the groove, the sealing part can be pressed towards the groove direction during sealing, and the groove is in a trapezoidal structure, so that the sealing part can also press the groove to achieve a better sealing effect, when leakage occurs between the first stainless steel pipe 1 and the second stainless steel pipe 2, the sensor 9 detects the leaked liquid and sends a signal to a ground monitoring station, and maintenance of a leakage point is facilitated.
Further optimize the scheme, butt joint locking portion includes that fixed connection has seted up a plurality of via holes 301 at the first flange 3 in the 1 outside of first nonrust steel pipe, the second flange 4 in the 2 outsides of second nonrust steel pipe respectively on first flange 3, the second flange 4, wears to be equipped with screw rod 5 in the corresponding via hole 301 of first flange 3, second flange 4, and screw rod 5 tip threaded connection has nut 6. The first flange 3 and the second flange 4 are locked by the screw 5, and the first inclined surface 104 and the third inclined surface 204 which are butted with the first stainless steel pipe 1 and the second stainless steel pipe 2 are gradually pressed along with the rotation of the nut 6 on the screw 5, so that the sealing layer between the first inclined surface 104 and the third inclined surface is pressed, and a good sealing effect is achieved.
In a further optimized scheme, the sealing layers comprise a first sealing layer 101 fixedly connected to the first inclined surface 104 and a third sealing layer 201 fixedly connected to the third inclined surface 204, the side, away from the first inclined surface 104, of the first sealing layer 101 is fixedly connected with a second sealing layer 102, and the side, away from the third inclined surface 204, of the third sealing layer 201 is fixedly connected with a fourth sealing layer 202.
In a further preferred embodiment, the first sealing layer 101 and the third sealing layer 201 are made of elastic materials, and the second sealing layer 102 and the fourth sealing layer 202 are made of adhesive materials.
The first sealing layer 101 and the third sealing layer 201 can be made of materials with elastic sealing effect such as rubber, the second sealing layer 102 and the fourth sealing layer 202 can be made of materials with certain viscosity effect such as asphalt, the first sealing layer 101 and the third sealing layer 201 are compressed by pressing the first stainless steel pipe 1 and the second stainless steel pipe 2, the second sealing layer 102 and the fourth sealing layer 202 between the first sealing layer and the second sealing layer are adhered together, and the sealing performance of the butted pipelines is improved.
Further optimize the scheme, the sealing portion is including inlaying the sealing ring 8 of establishing in the recess, and 8 cross sectional shapes of sealing ring are trapezium structure, and sealing ring 8 and recess phase-match have annular clamp 7, the 8 outside covers of sealing ring, and the 9 annular distributions of a plurality of sensors are on 8 inside walls of sealing ring.
According to the further optimization scheme, the annular groove 701 is formed in the inner side wall of the annular hoop 7, the annular hoop 7 comprises two half rings, the two ends of each half ring are fixedly connected with convex shoulders 702 respectively, the adjacent convex shoulders 702 are fixedly connected through screws 703, and the width of the annular groove 701 is matched with the width of the sealing ring 8.
The annular clamp 7 serves to press the sealing ring 8 into the groove.
According to the further optimization scheme, the first stainless steel pipe 1 and the second stainless steel pipe 2 are made of high-strength corrosion-resistant ocean engineering stainless steel materials, and the high-strength corrosion-resistant ocean engineering stainless steel comprises the following element components: mn 14.0-19.0%, si
Less than or equal to 0.45 percent, 16.0 to 21.0 percent of Cr, 3.0 to 4.0 percent of Ni, 2.5 to 3.5 percent of Mo, 0.5 to 1.0 percent of N, 0.1 to 0.3 percent of V, 0.1 to 0.2 percent of Y, 0.1 to 0.4 percent of La, less than or equal to 0.04 percent of C, less than or equal to 0.01 percent of S, less than or equal to 0.02 percent of P, and the balance of Fe and inevitable impurities.
Further optimizing the scheme, the first stainless steel pipe 1 and the second stainless steel pipe 2 are the same in thickness.
Example two:
referring to fig. 8-9, the stainless steel thick-walled pipe of the present embodiment differs from the first embodiment only in that the annular clamp 7 includes a clamping ring 704, the inner wall of the clamping ring 704 is provided with an inclined thread 705, the inclined thread 705 is in threaded fit with a wedge-shaped ring 707, one end of the wedge-shaped ring 707, which is far away from the clamping ring 704, is fixedly connected with a locking ring 706, the side wall of the wedge-shaped ring 707 is provided with a plurality of notches 708 along the axial direction, and the inner wall of the wedge-shaped ring 707 is in contact with the outer wall of the sealing ring 8.
When the sealing ring 8 is fixed, the wedge-shaped ring 707 is gradually selected into the inclined thread 705, and the wedge-shaped ring 707 is provided with the notch 708, so that the wedge-shaped ring 707 extrudes the sealing ring 8 along with the rotation of the wedge-shaped ring 707, and the sealing ring 8 is tightly matched in the groove.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention, 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, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (6)
1. The high-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe is characterized in that: the sensor comprises a stainless steel pipe body, wherein the stainless steel pipe body comprises a plurality of first stainless steel pipes (1), a second stainless steel pipe (2) is butted at the end part of each first stainless steel pipe (1), the outer sides of the first stainless steel pipes (1) and the second stainless steel pipes (2) are fixedly connected with a butt-joint locking part, a first inclined surface (104) is arranged at the edge part of each first stainless steel pipe (1) close to the inner side wall, a third inclined surface (204) is arranged at the edge part of each second stainless steel pipe (2) close to the inner side wall, the first inclined surface (104) is matched with the third inclined surface (204), a sealing layer is arranged between the first inclined surface (104) and the third inclined surface (204), an annular opening (103) is arranged at the edge part of each first stainless steel pipe (1) close to the outer side wall, a second inclined surface (203) is arranged at the edge part of each second stainless steel pipe (2) close to the outer side wall, the annular opening (103) and the second inclined surface (203) form a groove with a trapezoid cross section, a sealing part is embedded in the groove, and a plurality of sensors (9) are arranged at one side of the sealing part close to the groove;
the sealing layers comprise a first sealing layer (101) fixedly connected to the first inclined surface (104) and a third sealing layer (201) fixedly connected to the third inclined surface (204), a second sealing layer (102) is fixedly connected to one side, far away from the first inclined surface (104), of the first sealing layer (101), and a fourth sealing layer (202) is fixedly connected to one side, far away from the third inclined surface (204), of the third sealing layer (201);
sealing portion is established including inlaying sealing ring (8) in the recess, sealing ring (8) cross sectional shape is the trapezium structure, sealing ring (8) with the recess phase-match, sealing ring (8) outside cover has annular clamp (7), and is a plurality of sensor (9) annular distributes on sealing ring (8) inside wall.
2. The high-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe according to claim 1, wherein: the butt joint locking portion comprises a first flange (3) fixedly connected to the outer side of the first stainless steel pipe (1) and a second flange (4) fixedly connected to the outer side of the second stainless steel pipe (2), a plurality of through holes (301) are formed in the first flange (3) and the second flange (4) respectively, screw rods (5) penetrate through the through holes (301) corresponding to the first flange (3) and the second flange (4), and nuts (6) are connected to the end portions of the screw rods (5) in a threaded mode.
3. The high-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe according to claim 1, wherein: the first sealing layer (101) and the third sealing layer (201) are made of elastic materials, and the second sealing layer (102) and the fourth sealing layer (202) are made of adhesive materials.
4. The high-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe according to claim 1, characterized in that: annular groove (701) have been seted up to annular clamp (7) inside wall, annular clamp (7) include two semi-rings, semi-ring both ends are fixedly connected with convex shoulder (702) respectively, and are adjacent convex shoulder (702) pass through screw (703) fixed connection, annular groove (701) width with sealing ring (8) width phase-match.
5. The high-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe according to claim 1, characterized in that: the first stainless steel pipe (1) and the second stainless steel pipe (2) are high-strength corrosion-resistant ocean engineering stainless steel materials, and the high-strength corrosion-resistant ocean engineering stainless steel materials comprise the following element components: mn, si, cr, ni, mo, N, V, Y, la, C, S, P, fe and inevitable impurities.
6. The high-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe according to claim 1, wherein: the thicknesses of the first stainless steel pipe (1) and the second stainless steel pipe (2) are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111172285.3A CN113847480B (en) | 2021-10-08 | 2021-10-08 | High-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111172285.3A CN113847480B (en) | 2021-10-08 | 2021-10-08 | High-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe |
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| CN113847480A CN113847480A (en) | 2021-12-28 |
| CN113847480B true CN113847480B (en) | 2023-02-07 |
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| CN202111172285.3A Active CN113847480B (en) | 2021-10-08 | 2021-10-08 | High-strength corrosion-resistant ocean engineering stainless steel thick-wall pipe |
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| DE10056182A1 (en) * | 2000-11-13 | 2002-05-29 | Elringklinger Ag | Connecting system for exhaust pipe and second pipe comprises collar on exhaust pipe and flange on other pipe, V-shaped locking ring fitting over two and sealing ring being fitted between collar and flange which has bead around it |
| CN210179108U (en) * | 2019-07-09 | 2020-03-24 | 广东中捷建设有限公司 | Fire-fighting water supply pipeline connecting and assembling device |
| CN210739654U (en) * | 2019-11-07 | 2020-06-12 | 王亮 | Water supply and drainage pressure reducing and stabilizing valve |
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| JP2009103303A (en) * | 2007-10-05 | 2009-05-14 | Ckd Corp | Fluid device connecting structure and fluid device unit |
| CN204962126U (en) * | 2015-06-30 | 2016-01-13 | 广东立丰管道科技有限公司 | Screw ditch slot type thin wall stainless steel tee bend pipe fitting |
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| CN113847480A (en) | 2021-12-28 |
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Effective date of registration: 20231103 Address after: Building B1-202, 54-1 Lushan Road, Zhangcun Town, Huancui District, Weihai City, Shandong Province, 264203 Patentee after: Weihai Yingxin New Material Technology Co.,Ltd. Address before: 264202 No. 2, Wenhua West Road, torch high tech Industrial Development Zone, Weihai City, Shandong Province Patentee before: Zhao Hongyun |