CN108612936A - One kind being easily assembled high-strength bellows - Google Patents
One kind being easily assembled high-strength bellows Download PDFInfo
- Publication number
- CN108612936A CN108612936A CN201810690033.1A CN201810690033A CN108612936A CN 108612936 A CN108612936 A CN 108612936A CN 201810690033 A CN201810690033 A CN 201810690033A CN 108612936 A CN108612936 A CN 108612936A
- Authority
- CN
- China
- Prior art keywords
- bellows
- connector
- connecting tube
- easily assembled
- polyethylene layer
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 235000005121 Sorbus torminalis Nutrition 0.000 claims abstract description 5
- 244000152100 Sorbus torminalis Species 0.000 claims abstract description 5
- 239000004698 Polyethylene Substances 0.000 claims description 28
- -1 polyethylene Polymers 0.000 claims description 28
- 229920000573 polyethylene Polymers 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 16
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
-
- 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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/26—Hoses, i.e. flexible pipes made of sound-absorbing materials or with sound-absorbing structure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses one kind being easily assembled high-strength bellows, including bellows body and connector, the both ends of the bellows body are fixedly connected with connecting tube, it is provided with external screw thread on the outer surface of the connecting tube, one end of the connecting tube is fixedly connected with sealing ring, the outer surface of the connector is provided with anti-skid chequer, and the inside middle-end of the connector is provided with annular groove, and the connecting tube is connect with connector by external screw thread and internal thread spiral.This kind of invention reasonable design, it is very suitable for bellows use, by being provided with connecting tube and connector, and under the cooperation of external screw thread and internal thread, facilitate the docking assembly and disassembly between bellows, by being provided with sealing ring, and under the cooperation of fixed lobe and fixing groove, leakproofness when bellows docking can be reinforced, by the cooperation for being provided with metal tape and steel wire, the intensity that bellows can effectively be reinforced, prevent dismounting or using when cause bellows to damage, be suitble to be widely popularized.
Description
Technical field
The present invention relates to Bellows Technology field, more particularly to one kind being easily assembled high-strength bellows.
Background technology
Bellows refers to the tubular elastomeric sensing element connected into along folding retractable direction with foldable wrinkle piece.Bellows
Be widely used in instrument and meter, be mainly used for the measuring cell as pressure measuring instruments, convert pressure into displacement or
Power.Ripple tube wall is relatively thin, and sensitivity is higher, and measurement range is tens of pas to tens of megapascal.Its open end is fixed, sealed end
Increase elasticity in free state, and using the helical spring of auxiliary or reed.Along pipe under the action of internal pressure when work
Sub- elongated lengthwise makes movable end generate the displacement with pressure at certain relationship.Movable end drives pointer that can directly indicate
The size of pressure.Bellows, which usually combines with displacement sensor, constitutes output as the pressure sensor of electricity, also uses sometimes
Make isolation element.Since the stretching, extension of bellows requires larger volume to change, its response speed is less than Bourdon tube.Ripple
Pipe is suitable for measuring low pressure.For existing bellows in assembling, docking and dismounting are all very troublesome, and the leakproofness in docking
Difference, existing bellows intensity difference are easy to be damaged, and do not have soundproof effect in dismounting.
Invention content
The main purpose of the present invention is to provide one kind being easily assembled high-strength bellows, can effectively solve in background technology
The problem of.
To achieve the above object, the technical solution that the present invention takes is：
One kind being easily assembled high-strength bellows, including bellows body and connector, and the both ends of the bellows body, which are fixed, to be connected
It is connected to connecting tube, external screw thread is provided on the outer surface of the connecting tube, one end of the connecting tube is fixedly connected with sealing ring,
The outer surface of the connector is provided with anti-skid chequer, and the connector is internally provided with internal thread, the inside of the connector
Middle-end is provided with annular groove, and the connecting tube is connect with connector by external screw thread and internal thread spiral, the connector
Fixed lobe is provided on the outer surface of both ends, the both ends outer surface of the bellows body is provided with fixing groove, the bellows body
Be internally provided with enhancement layer, the enhancement layer includes the first polyethylene layer, steel wire, puigging, metal tape and the second poly- second
Alkene layer is connect by adhesion resin with metal water stop, the ripple between first polyethylene layer and the second polyethylene layer
Be fixedly connected with steel wire on the inner wall of tube body, be provided with puigging between the steel wire and the second polyethylene layer, it is described every
Sound-absorption hole is provided in sound-absorbing layer.
Further, the bellows body is an integral structure with connecting tube, the material of the bellows body and connecting tube
It is carbon steel material, the inner wall of the bellows body and the inner wall of connecting tube are shiny surface.
Further, the sealing ring is loop configuration, and the diameter of the sealing ring is identical as one end diameter of connecting tube,
The sealing ring is silica gel material, and the thickness of the sealing ring is 1mm-5mm.
Further, the material of the connector is stainless steel, and the connector is the cylindrical structure of two open ends, institute
The height 1/2 for stating connector is equal with the height of connecting tube.
Further, there are two the fixed lobe and fixing groove are respectively provided with, the position of the fixed lobe and fixing groove
Corresponding, the shape size of the fixed lobe and the shape size of fixing groove match.
Further, the material of the puigging is sound-proof material, and the thickness of the puigging is 2cm-5cm.
Further, the sound-absorption hole is provided with several, and the aperture of the sound-absorption hole is 1mm-3mm, the sound-absorption hole
Be internally provided with ceramic particle.
Further, the steel wire is high-strength steel mesh, and the mesh of the steel wire is 3mm-6mm, the steel wire
The surface of net is provided with corrosion-resistant coating.
Further, first polyethylene layer is identical as the thickness of the second polyethylene layer, and first polyethylene layer
Section with the second polyethylene layer is arc-shaped.
Further, the metal tape is any one in stainless steel, copper and aluminium.
Compared with prior art, the present invention has the advantages that：This kind of invention reasonable design, it is easy to use, very
It is suitble to bellows to use, by being provided with the compounding practice mode of connecting tube and connector, and matching in external screw thread and internal thread
Under conjunction, the docking assembly and disassembly between bellows can be facilitated, by being provided with sealing ring, and in fixed lobe and fixing groove
Cooperation under, can reinforce bellows docking when leakproofness can be effective by being provided with the cooperation of metal tape and steel wire
The intensity for reinforcing bellows, prevent dismounting or using when cause bellows to damage, can be with by being provided with puigging and sound-absorption hole
Effectively noise is eliminated, it is simple and convenient, it is suitble to be widely popularized.
Description of the drawings
Fig. 1 is the whole schematic cross-sectional view of the present invention.
Fig. 2 is overall structure of the present invention.
Fig. 3 is enhancement layer internal structure schematic diagram of the present invention.
Fig. 4 is inventive joint bottom substance schematic diagram.
In figure：1, bellows body；2, enhancement layer；3, connecting tube；4, connector；5, external screw thread；6, sealing ring；7, annular is recessed
Slot；8, internal thread；9, the first polyethylene layer；10, adhesion resin；11, fixing groove；12, steel wire；13, sound-absorption hole；14, sound insulation
Layer；15, metal tape；16, the second polyethylene layer；17, fixed lobe；18, anti-skid chequer.
Specific implementation mode
To make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, with reference to
Specific implementation mode, the present invention is further explained.
As shown in Figs 1-4, one kind being easily assembled high-strength bellows, including bellows body 1 and connector 4, the bellows
The both ends of body 1 are fixedly connected with connecting tube 3, are provided with external screw thread 5 on the outer surface of the connecting tube 3, and the one of the connecting tube 3
End is fixedly connected with sealing ring 6, and the outer surface of the connector 4 is provided with anti-skid chequer 18, and the connector 4 is internally provided with
The inside middle-end of internal thread 8, the connector 4 is provided with annular groove 7, and the connecting tube 3 passes through external screw thread 5 with connector 4
It is connected with 8 spiral of internal thread, fixed lobe 17 is provided on the both ends outer surface of the connector 4, the bellows body 1
Both ends outer surface is provided with fixing groove 11, and the bellows body 1 is internally provided with enhancement layer 2, and the enhancement layer 2 includes first
Polyethylene layer 9, steel wire 12, puigging 14, metal tape 15 and the second polyethylene layer 16, first polyethylene layer 9 and second
It is tightly connected by adhesion resin 10 and metal tape 15 between polyethylene layer 16, is fixedly connected on the inner wall of the bellows body 1
There is steel wire 12, puigging 14 is provided between the steel wire 12 and the second polyethylene layer 16, is arranged on the puigging 14
There is sound-absorption hole 13.
Wherein, the bellows body 1 is an integral structure with connecting tube 3, the material of the bellows body 1 and connecting tube 3
It is carbon steel material, the inner wall of the bellows body 1 and the inner wall of connecting tube 3 are shiny surface, by bellows body 1 and connecting tube
3 are set as integral type, can increase the leakproofness of bellows.
Wherein, the sealing ring 6 is loop configuration, and the diameter of the sealing ring 6 is identical as one end diameter of connecting tube 3,
The sealing ring 6 is silica gel material, and the thickness of the sealing ring 6 is that 1mm-5mm further increases ripple by sealing ring 6
Leakproofness when pipe docks.
Wherein, the material of the connector 4 is stainless steel, and the connector 4 is the cylindrical structure of two open ends, described
The height 1/2 of connector 4 is equal with the height of connecting tube 3, is connect with the spiral of connecting tube 3 by connector 4, facilitates bellows
Carry out disassembly and assembly.
Wherein, there are two the fixed lobe 17 and fixing groove 11 are respectively provided with, the fixed lobe 17 and fixing groove 11
Position is corresponding, and the shape size and the shape size of fixing groove 11 of the fixed lobe 17 match, and pass through fixed lobe 17
It is connected to the inside of fixing groove 11, it is convenient that connector 4 is fixed, to improve Butt sealing.
Wherein, the material of the puigging 14 is sound-proof material, and the thickness of the puigging 14 is 2cm-5cm, passes through sound insulation
Effectively noise can be isolated for sound-proof material in layer 14, prevent noise from being impacted to external environment.
Wherein, the sound-absorption hole 13 is provided with several, and the aperture of the sound-absorption hole 13 is 1mm-3mm, the sound-absorption hole
13 are internally provided with ceramic particle, are facilitated by sound-absorption hole 13 and eliminate noise, improve soundproof effect.
Wherein, the steel wire 12 is high-strength steel mesh, and the mesh of the steel wire 12 is 3mm-6mm, the steel wire
The surface of net 12 is provided with corrosion-resistant coating, by steel wire 12 to the firm effect of bellows body 1, to improve bellows
Intensity prevents bellows from damaging.
Wherein, first polyethylene layer 9 is identical as the thickness of the second polyethylene layer 16, and first polyethylene layer 9
Section with the second polyethylene layer 16 is arc-shaped, using arc-shaped structure, has the function that eliminate impact force.
Wherein, the metal tape 15 is any one in stainless steel, copper and aluminium, and metal tape 15 can not only enhance by force
Degree, while the conduction of velocity of heat can be improved.
It should be noted that the present invention, which is one kind, being easily assembled high-strength bellows, in use, staff is by connecting tube 3
It is connect by external screw thread 5 and 8 spiral of internal thread with one end of connector 4, on the other end of connector 4 and another bellows
3 spiral of connecting tube connects, and realizes docking, in dismounting, only need to back out connector 4 from connecting tube 3, passes through connecting tube
Sealing ring 6 on 3 one end, when inside of the connecting tube 3 completely into connector 4, fixed lobe 17 is connected to fixing groove 11
Inside can reinforce leakproofness when bellows docking, by the cooperation of metal tape 15 and steel wire 12 inside enhancement layer 2,
The intensity that bellows can effectively be reinforced, prevent dismounting or using when cause bellows to damage, pass through puigging 14 and sound-absorption hole
Ceramic particle inside 13 can effectively eliminate noise.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. one kind being easily assembled high-strength bellows, including bellows body (1) and connector (4), it is characterised in that：The bellows
The both ends of body (1) are fixedly connected with connecting tube (3), and external screw thread (5), the company are provided on the outer surface of the connecting tube (3)
The one end for taking over (3) is fixedly connected with sealing ring (6), and the outer surface of the connector (4) is provided with anti-skid chequer (18), the company
Connector (4) is internally provided with internal thread (8), and the inside middle-end of the connector (4) is provided with annular groove (7), the company
It takes over (3) to connect by external screw thread (5) and internal thread (8) spiral with connector (4), the both ends outer surface of the connector (4)
On be provided with fixed lobe (17), the both ends outer surface of the bellows body (1) is provided with fixing groove (11), the bellows body
(1) be internally provided with enhancement layer (2), the enhancement layer (2) includes the first polyethylene layer (9), steel wire (12), puigging
(14), metal tape (15) and the second polyethylene layer (16) lead between first polyethylene layer (9) and the second polyethylene layer (16)
It crosses adhesion resin (10) to be tightly connected with metal tape (15), steel wire is fixedly connected on the inner wall of the bellows body (1)
(12), it is provided with puigging (14) between the steel wire (12) and the second polyethylene layer (16), is set on the puigging (14)
It is equipped with sound-absorption hole (13).
2. one kind according to claim 1 is easily assembled high-strength bellows, it is characterised in that：The bellows body (1) with
Connecting tube (3) is an integral structure, and the bellows body (1) and the material of connecting tube (3) are carbon steel material, the bellows
The inner wall of body (1) and the inner wall of connecting tube (3) are shiny surface.
3. one kind according to claim 1 is easily assembled high-strength bellows, it is characterised in that：The sealing ring (6) is ring
The diameter of shape structure, the sealing ring (6) is identical as one end diameter of connecting tube (3), and the sealing ring (6) is silica gel material,
The thickness of the sealing ring (6) is 1mm-5mm.
4. one kind according to claim 1 is easily assembled high-strength bellows, it is characterised in that：The material of the connector (4)
Matter is stainless steel, and the connector (4) is the cylindrical structure of two open ends, the height 1/2 and connecting tube of the connector (4)
(3) height is equal.
5. one kind according to claim 1 is easily assembled high-strength bellows, it is characterised in that：The fixed lobe (17) with
There are two fixing groove (11) is respectively provided with, the fixed lobe (17) is corresponding with the position of fixing groove (11), the fixed lobe
(17) shape size and the shape size of fixing groove (11) match.
6. one kind according to claim 1 is easily assembled high-strength bellows, it is characterised in that：The material of the puigging (14)
Matter is sound-proof material, and the thickness of the puigging (14) is 2cm-5cm.
7. one kind according to claim 1 is easily assembled high-strength bellows, it is characterised in that：Sound-absorption hole (13) setting
There are several, the aperture of the sound-absorption hole (13) is 1mm-3mm, and the sound-absorption hole (13) is internally provided with ceramic particle.
8. one kind according to claim 1 is easily assembled high-strength bellows, it is characterised in that：The steel wire (12) is height
The mesh of intensity steel wire, the steel wire (12) is 3mm-6mm, and the surface of the steel wire (12) is provided with corrosion-resistant coating.
9. one kind according to claim 1 is easily assembled high-strength bellows, it is characterised in that：First polyethylene layer
(9) identical as the thickness of the second polyethylene layer (16), and the section of first polyethylene layer (9) and the second polyethylene layer (16)
It is arc-shaped.
10. one kind according to claim 1 is easily assembled high-strength bellows, it is characterised in that：The metal tape (15) is
Any one in stainless steel, copper and aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690033.1A CN108612936A (en) | 2018-06-28 | 2018-06-28 | One kind being easily assembled high-strength bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690033.1A CN108612936A (en) | 2018-06-28 | 2018-06-28 | One kind being easily assembled high-strength bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108612936A true CN108612936A (en) | 2018-10-02 |
Family
ID=63665849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810690033.1A Pending CN108612936A (en) | 2018-06-28 | 2018-06-28 | One kind being easily assembled high-strength bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108612936A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488432A (en) * | 2018-11-23 | 2019-03-19 | 宁波联华汽车部件有限公司 | A kind of flexible hose |
| CN110080193A (en) * | 2019-04-18 | 2019-08-02 | 中国地质大学（武汉） | A kind of monitoring device and method of soil body delaminating deposition |
| CN110822201A (en) * | 2019-12-04 | 2020-02-21 | 宁波米勒管道科技有限公司 | Double-layer sealed flexible stainless steel composite pipe joint |
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|---|---|---|---|---|
| CN2063602U (en) * | 1989-07-20 | 1990-10-10 | 鲍振林 | Flexible expansible joint |
| CN205001675U (en) * | 2015-10-08 | 2016-01-27 | 绍兴文理学院元培学院 | Amortization bellows |
| CN205383352U (en) * | 2016-01-29 | 2016-07-13 | 广西南旭塑胶有限公司 | Reinforced double wall corrugated pipe |
| CN205534709U (en) * | 2016-04-08 | 2016-08-31 | 昆山汉元经水计量信息技术有限公司 | Ditch slot type connects |
| CN205781505U (en) * | 2016-06-24 | 2016-12-07 | 营口希泰精密焊接科技有限公司 | A kind of metal bellows |
-
2018
- 2018-06-28 CN CN201810690033.1A patent/CN108612936A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2063602U (en) * | 1989-07-20 | 1990-10-10 | 鲍振林 | Flexible expansible joint |
| CN205001675U (en) * | 2015-10-08 | 2016-01-27 | 绍兴文理学院元培学院 | Amortization bellows |
| CN205383352U (en) * | 2016-01-29 | 2016-07-13 | 广西南旭塑胶有限公司 | Reinforced double wall corrugated pipe |
| CN205534709U (en) * | 2016-04-08 | 2016-08-31 | 昆山汉元经水计量信息技术有限公司 | Ditch slot type connects |
| CN205781505U (en) * | 2016-06-24 | 2016-12-07 | 营口希泰精密焊接科技有限公司 | A kind of metal bellows |
Non-Patent Citations (1)
| Title |
|---|
| 邢振贤等: "《土木工程材料》", 28 February 2013 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488432A (en) * | 2018-11-23 | 2019-03-19 | 宁波联华汽车部件有限公司 | A kind of flexible hose |
| CN110080193A (en) * | 2019-04-18 | 2019-08-02 | 中国地质大学（武汉） | A kind of monitoring device and method of soil body delaminating deposition |
| CN110080193B (en) * | 2019-04-18 | 2020-11-27 | 中国地质大学（武汉） | A kind of monitoring device and method for layered settlement of soil |
| CN110822201A (en) * | 2019-12-04 | 2020-02-21 | 宁波米勒管道科技有限公司 | Double-layer sealed flexible stainless steel composite pipe joint |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20181002 |