CN104141848A - Hose flange joint method - Google Patents
Hose flange joint method Download PDFInfo
- Publication number
- CN104141848A CN104141848A CN201410344532.7A CN201410344532A CN104141848A CN 104141848 A CN104141848 A CN 104141848A CN 201410344532 A CN201410344532 A CN 201410344532A CN 104141848 A CN104141848 A CN 104141848A
- Authority
- CN
- China
- Prior art keywords
- rubber hose
- metal flange
- flange
- hose
- swelling
- 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
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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
- F16L33/035—Hose-clips fixed by means of teeth or hooks
-
- 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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/003—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses comprising elements arranged in the hose walls
-
- 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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
- F16L33/213—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being expanded inside the hose
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Abstract
The invention belongs to the field of hose and metal pipe connection, and more specifically relates to a method for tightly connecting a metal flange with a rubber hose. The hose flange joint method is a method for tightly connecting the metal flange with the rubber hose. The rubber hose is outwardly expanded by internally utilizing the metal flange, so that the rubber hose clings to an external fixed steel tube and an internal metal flange connecting part to realize the connection and sealing of the rubber hose and the metal flange. The rubber hose is expanded by the metal flange by utilizing the metal flange connecting part and the internal and external diameter sizes of the rubber hose. With such connecting mode, the local deformation of the fixed steel tube, the rubber hose and the connecting flange can not be caused, the connection operation is simple and quick, and the automatic connection operation is realized. With such method, the rubber hose and the metal flange are tightly connected, so the sealing performance is good, the falling-off or deformation fracture phenomena do not easily occur, and the service life is long.
Description
Technical field
The invention belongs to flexible pipe and metal tube connection area, relate in particular a kind of close-connected method of metal flange and rubber hose.
Background technique
In prior art, usually need metal flange or metal tube etc. to be connected with rubber hose, but because rubber hose material is softer, easily deformable, so being connected with metal tube etc., rubber hose there is larger difficulty, be difficult for fixing, very easily there is the phenomenon that two pipes depart from, for solving this class problem, on existing market, conventional employing is in rubber hose outer installment layer of metal fixed tube, metal fixed tube is socketed rubber hose with the metal tube being connected, and utilize pipe clamp to clamp from the outside metal fixed tube, make metal fixed tube press rubber hose, realize rubber hose and being connected that metal tube or metal method connect, but this connection way, very easily there is local deformation in rubber hose, make to connect the phenomenon that closely and does not very easily occur rubber hose fracture, adopt in this way the flexible pipe that connects and metal tube or metal flange short working life, not easy-maintaining, cost is high.
Summary of the invention
Technical solution of the present invention aim to provide one make rubber hose and metal method downlink connection tight, and simple to operate, can not cause the hose flange jointing method of rubber hose local deformation fracture.
A kind of hose flange jointing method of the present invention, this method is to be mainly connected with the tight of metal flange for rubber hose, the main feature of this method is by inner utilization metal flange, rubber hose outwards to be expanded, make rubber hose be adjacent to outside fixing steel pipe and inner metal flange joint, realize connection and the sealing of rubber hose and metal flange, the operating procedure of described method is:
The first step, the fixing steel pipe socket being applicable to is connected to rubber hose and connects end, described fixing steel pipe outer end is arranged to axis bending-like, forms a circular arc elbow, and in rubber hose end, rubber washer being set, described rubber washer is arranged on the circular arc inner side of elbow of fixing steel pipe;
Second step, selected oil hydraulic pump, stretches out and in direction, is fixedly installed a mould connecting rod at oil hydraulic pump push rod, and at oil hydraulic pump push rod end fastening flange connecting plate;
The 3rd step, selected applicable metal flange, described metal flange comprises flange part and joint, and described joint comprises that the swelling portion of front end is connected the excessive portion of swelling portion and flange part with rear portion, and metal flange is fixed through mould connecting rod and flange connecting plate;
The 4th step, selects suitable inner lining mould, and inner lining mould is fixed on to mould connecting rod end, and inner lining mould outer end utilizes tightening nut to fix, and the inner is placed in the swelling portion of metal flange, utilizes swelling portion to be fixed;
The 5th step, rubber hose inside is stretched in the end that inner lining mould and metal flange entirety are provided with to fixation plate by rubber hose;
The 6th step, primer fluid press pump, keep mould connecting rod to maintain static, oil hydraulic pump push rod drives metal flange, fixation plate and rubber hose entirety are released forward together, make the swelling portion of metal flange through inner lining mould outside swelling rubber hose, when the swelling portion of metal flange all can stop promoting through inner lining mould, now, the swelling portion of metal flange is under the extruding and swelling of inner lining mould, the outside swelling of swelling portion and extruding rubber hose, make rubber hose distortion radial contraction, swelling portion internal diameter is equated with rubber hose internal diameter, rubber hose inner side surface becomes same level line states with the inner side surface of the swelling portion of metal flange, utilize like this metal flange and fixing steel tube extrusion rubber hose, realize being connected of rubber hose and metal flange,
The 7th step, by disassembling on flange connecting plate, and moves metal flange by oil hydraulic pump backward, and inner lining mould is taken out by the excessive portion of metal flange, has completed whole work that rubber hose is connected with metal flange.
Preferably, the swelling portion internal diameter of described metal flange is less than excessive portion internal diameter, and swelling portion external diameter is less than excessive portion external diameter, and swelling portion external diameter and rubber hose internal diameter adapt to, and excessively portion's external diameter is greater than rubber hose internal diameter.
Preferably, described inner lining mould comprises the trapezoidal round platform at rear portion and anterior cylindrical body, and the cylindrical body of described inner lining mould is outer through adapting to rubber hose internal diameter.
Preferably, on the excessive portion of described metal flange and swelling portion joint outer side surface, be provided with circular groove, the circular arc elbow of described fixing steel pipe is placed in circular groove.
The beneficial effect of technical solution of the present invention is:
The present invention changes flexible pipe in prior art and is connected the Placement adopting by the outside clamping of pipe clamp with metal tube or metal flange, realize the expansion of metal flange to rubber hose then the inside/outside diameter size that utilizes metal flange joint and rubber hose is poor, adopt this Placement, can not cause fixing steel pipe, the local deformation that rubber hose and connection method connect, attended operation simple and fast, realize automatic attended operation, and adopt in this way, rubber hose is connected with metal flange closely, good seal performance, be not prone to the phenomenon that comes off or be out of shape fracture, long service life.
Brief description of the drawings
Fig. 1 is the operation chart of a kind of hose flange jointing method of the present invention,
Fig. 2 is the partial schematic diagram of figure mono-of the present invention,
Fig. 3 is schematic diagram after rubber hose of the present invention is connected with metal flange joint,
Wherein, 1, oil hydraulic pump, 2, mould connecting rod, 3, swelling portion, 4, inner lining mould, 5, rubber hose, 6, flange connecting plate, 7, metal flange, 8, excessive portion, 9, fixing steel pipe, 10, rubber washer.
Embodiment
Understand technical solution of the present invention for ease of those skilled in the art, now in conjunction with Figure of description, technical solution of the present invention is described further.
As shown in Figure 1, Figure 2 and Figure 3, for a kind of connecting means operation chart of hose flange jointing method be connected after schematic diagram, a kind of hose flange jointing method, this method is to be mainly connected with the tight of metal flange 7 for rubber hose 5, the main feature of this method is by inner utilization metal flange 7, rubber hose 5 outwards to be expanded, make rubber hose 5 be adjacent to outside fixing steel pipe 9 and inner metal flange joint, realize connection and the sealing of rubber hose 5 and metal flange 7, the operating procedure of method is:
The first step, the fixing steel pipe 9 being applicable to is socketed on to rubber hose 5 and connects end, fixing steel pipe 9 outer ends are arranged to axis bending-like, form a circular arc elbow, and in rubber hose 5 ends, rubber washer 10 being set, rubber washer 10 is arranged on the circular arc inner side of elbow of fixing steel pipe 9;
Second step, selected oil hydraulic pump 1, stretches out and in direction, is fixedly installed a mould connecting rod 2 at oil hydraulic pump 1 push rod, and at oil hydraulic pump push rod end fastening flange connecting plate 6;
The 3rd step, selected applicable metal flange 7, metal flange comprises flange part and joint, joint comprises that the swelling portion 3 of front end is connected the excessive portion 8 of swelling portion 3 and flange part with rear portion, and metal flange 7 is fixing with flange connecting plate 6 through mould connecting rod 2;
The 4th step, selects suitable inner lining mould 4, and inner lining mould 4 is fixed on to mould connecting rod 2 ends, and inner lining mould 4 outer ends utilize tightening nut to fix, and the inner is placed in the swelling portion 3 of metal flange 7, utilizes swelling portion 3 to be fixed;
The 5th step, rubber hose 5 inside are stretched in the end that inner lining mould 4 and metal flange 7 entirety are provided with to fixation plate 9 by rubber hose 5;
The 6th step, primer fluid press pump 1, keep mould connecting rod 2 and inner lining mould 4 to maintain static, oil hydraulic pump push rod drives metal flange 7, fixation plate 9 and rubber hose 5 entirety are released forward together, make the swelling portion 3 of metal flange 7 through inner lining mould 4 outside swelling rubber hose 5, when the swelling portion 3 of metal flange 7 all can stop promoting through inner lining mould 4, now, the swelling portion 3 of metal flange 7 is under the extruding and swelling of inner lining mould 4, the outside swelling of swelling portion 3 and extruding rubber hose 5, make rubber hose 5 be out of shape radial contraction, swelling portion 3 internal diameters are equated with rubber hose 5 internal diameters, rubber hose 5 inner side surfaces become same level line states with the inner side surface of the swelling portion 3 of metal flange 7, utilize like this metal flange 7 and fixing steel pipe 9 to push rubber hose 5, realize being connected of rubber hose 5 and metal flange 7,
The 7th step, by disassembling on flange connecting plate 6, and moves metal flange 7 by oil hydraulic pump 1 backward, and inner lining mould 4 is taken out by the excessive portion 8 of metal flange, has completed whole work that rubber hose 5 is connected with metal flange 7.
Embodiment one:
The first step, choosing internal diameter is that 202mm external diameter is the rubber hose of 238mm, choosing internal diameter is that 238.8mm external diameter is that 250mm length is the fixing steel pipe of 200mm, the circular arc elbow that is 8mm to axial direction bending forming radius by fixing steel pipe outer end, the circular diameter that arc bend capitiform becomes is 217mm, to fix steel pipe and be placed on rubber hose outside, choose thickness is that 10mm external diameter is that 238mm internal diameter is the cylindrical rubber packing ring of 210mm simultaneously, and rubber washer is positioned over to the rubber hose end of the circular arc elbow inside of fixing steel pipe, utilize fixing steel pipe that rubber hose and rubber washer are fixed,
Second step, chooses the oil hydraulic pump with three push rods, the flange connecting plate that fixed diameter is 350mm on three push rods, and the stroke of definite hydraulic system, and release in direction and fix a mould connecting rod at the push rod of oil hydraulic pump;
The 3rd step, choose metal flange, metal flange comprises joint and flange part, flange part internal diameter is that 221mm external diameter is 342mm, joint comprises that internal diameter is that 189mm external diameter is that 201mm length is that swelling portion and the internal diameter of 150mm is that 206mm external diameter is that 219mm length is the excessive portion of 130mm, and swelling portion and excessive portion are that 32mm angle is that the circular cone of 21 ° is connected by length, and being provided with the degree of depth in circular cone and excessive portion joint is that 1.5mm width is the curve bath of 5.5mm, in this curve bath, be set to the circular arc elbow of fixing steel pipe, then metal flange is fixed through mould connecting rod and flange connecting plate,
The 4th step, select inner lining mould, the cylinder that it is 202mm that inner lining mould comprises highly for 40mm external diameter and be highly the circular cone of 5 ° for 99.7mm angle, is fixed on mould connecting rod end by inner lining mould, and inner lining mould is placed in the swelling portion of metal flange;
The 5th step, stretches into rubber hose inside by inner lining mould and metal flange entirety by rubber hose end, and the circular arc elbow of fixing steel pipe is placed in the curve bath of the excessive portion of metal flange;
The 6th step, primer fluid press pump, oil hydraulic pump push rod drives metal flange, fixation plate and rubber hose entirety are released forward together, and the swelling portion of metal flange is through inner lining mould outside swelling rubber hose, when the swelling portion of metal flange all can stop promoting through inner lining mould, now, the swelling portion of metal flange is under the extruding and swelling of interior inner lining mould, the outside swelling of swelling portion and extruding rubber hose, make rubber hose distortion radial contraction, swelling portion internal diameter is equated with rubber hose internal diameter, rubber hose inner side surface becomes same level line states with the inner side surface of the swelling portion of metal flange, utilize like this metal flange and fixing steel tube extrusion rubber hose, realize being connected of rubber hose and metal flange,
The 7th step, by disassembling on flange connecting plate, and moves metal flange by oil hydraulic pump backward, inner lining mould is obtained to excessive portion by metal flange and take out, and has completed whole work that rubber hose is connected with metal flange.
Embodiment two,
According to embodiment one step and operating method, select respectively
The first step, choose rubber hose internal diameter 152 external diameters 188, the circular arc that fixing pipe diameter 188.5 external diameter 200 length 100 and radius are 8 forms the circular arc elbow that diameter is 168, rubber washer internal diameter 159 external diameters 188, and rubber hose, fixing steel pipe and rubber washer are fixed as method in embodiment one;
Second step, as the method in embodiment one and selection of dimension oil hydraulic pump;
The 3rd step, choose metal flange, flange part internal diameter 170 external diameters 280, swelling portion internal diameter 140 external diameters 152, excessively portion's internal diameter 150 external diameters 168, and swelling portion and excessively portion are that 24 angles are that the circular cone of 21 ° is connected by length, and to be provided with the degree of depth in circular cone and excessive portion joint be that 1.5 width are 5.5 curve bath, in this curve bath, be set to the circular arc elbow of fixing steel pipe, then metal flange fixed through mould connecting rod and flange connecting plate;
The 4th step, selecting inner lining mould height is that 40 external diameters are 152 cylinder and are highly that 99.7 angles are the circular cone of 5 °, inner lining mould is fixed on to mould connecting rod end, and inner lining mould is placed in the swelling portion of metal flange;
After all parts of bag are all selected and installed, as the 5th to the 7th step mode of operation operation in embodiment one, realize the connection of fixing steel pipe, rubber hose and metal flange and fix.
By reference to the accompanying drawings invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as the various unsubstantialities that adopted method design of the present invention and technological scheme to carry out improve; or without improving, the design of invention and technological scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (4)
1. a hose flange jointing method, by rubber hose and the close-connected method of metal flange, it is characterized in that, described method is by inner utilization metal flange, rubber hose outwards to be expanded, make rubber hose be adjacent to outside fixing steel pipe and inner metal flange joint, realize connection and the sealing of rubber hose and metal flange, the operating procedure of described method is:
The first step, the fixing steel pipe socket being applicable to is connected to rubber hose and connects end, described fixing steel pipe outer end is arranged to axis bending-like, forms a circular arc elbow, and in rubber hose end, rubber washer being set, described rubber washer is arranged on the circular arc inner side of elbow of fixing steel pipe;
Second step, selected oil hydraulic pump, stretches out and in direction, is fixedly installed a mould connecting rod at oil hydraulic pump push rod, and at oil hydraulic pump push rod end fastening flange connecting plate;
The 3rd step, selected applicable metal flange, described metal flange comprises flange part and joint, and described joint comprises that the swelling portion of front end is connected the excessive portion of swelling portion and flange part with rear portion, and metal flange is fixed through mould connecting rod and flange connecting plate;
The 4th step, selects suitable inner lining mould, and inner lining mould is fixed on to mould connecting rod end, and inner lining mould outer end utilizes tightening nut to fix, and the inner is placed in the swelling portion of metal flange, utilizes swelling portion to be fixed;
The 5th step, rubber hose inside is stretched in the end that inner lining mould and metal flange entirety are provided with to fixation plate by rubber hose;
The 6th step, primer fluid press pump, keep mould connecting rod to maintain static, oil hydraulic pump push rod drives metal flange, fixation plate and rubber hose entirety are released forward together, make the swelling portion of metal flange through inner lining mould outside swelling rubber hose, when the swelling portion of metal flange all can stop promoting through inner lining mould, now, the swelling portion of metal flange is under the extruding and swelling of inner lining mould, the outside swelling of swelling portion and extruding rubber hose, make rubber hose distortion radial contraction, swelling portion internal diameter is equated with rubber hose internal diameter, rubber hose inner side surface becomes same level line states with the inner side surface of the swelling portion of metal flange, utilize like this metal flange and fixing steel tube extrusion rubber hose, realize being connected of rubber hose and metal flange,
The 7th step, by disassembling on flange connecting plate, and moves metal flange by oil hydraulic pump backward, and inner lining mould is taken out by the excessive portion of metal flange, has completed whole work that rubber hose is connected with metal flange.
2. a kind of hose flange jointing method according to claim 1, it is characterized in that, the swelling portion internal diameter of described metal flange is less than excessive portion internal diameter, and swelling portion external diameter is less than excessive portion external diameter, swelling portion external diameter and rubber hose internal diameter adapt to, and excessively portion's external diameter is greater than rubber hose internal diameter.
3. a kind of hose flange jointing method according to claim 1, is characterized in that, described inner lining mould comprises the trapezoidal round platform at rear portion and anterior cylindrical body, and the cylindrical body of described inner lining mould is outer through adapting to rubber hose internal diameter.
4. a kind of hose flange jointing method according to claim 1, is characterized in that, on the excessive portion of described metal flange and swelling portion joint outer side surface, is provided with circular groove, and the circular arc elbow of described fixing steel pipe is placed in circular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410344532.7A CN104141848A (en) | 2014-07-21 | 2014-07-21 | Hose flange joint method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410344532.7A CN104141848A (en) | 2014-07-21 | 2014-07-21 | Hose flange joint method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104141848A true CN104141848A (en) | 2014-11-12 |
Family
ID=51851119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410344532.7A Pending CN104141848A (en) | 2014-07-21 | 2014-07-21 | Hose flange joint method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104141848A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714960A (en) * | 2019-11-15 | 2020-01-21 | 中国人民解放军陆军工程大学 | Connecting structure and connecting method of FRP (fiber reinforced plastic) pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62101990A (en) * | 1985-10-25 | 1987-05-12 | 住友電気工業株式会社 | Terminal section of composite pipe |
| DE102007042606A1 (en) * | 2007-09-07 | 2009-03-12 | Witzenmann Gmbh | Annular or threaded corrugated metal tube e.g. pressure-resistant fluid line, manufacturing method for air conditioner of motor vehicle, involves pulling off taper drift outwardly by channel, so that connection section is radially expanded |
| CN201973392U (en) * | 2011-04-14 | 2011-09-14 | 厦门市卓励石化设备有限公司 | Composite hose coupler |
| CN201982846U (en) * | 2011-04-27 | 2011-09-21 | 天津市海王星海上工程技术有限公司 | Shallow sea high-pressure small-caliber composite hose coupler |
| CN202028903U (en) * | 2010-11-29 | 2011-11-09 | 天津市海王星海上工程技术有限公司 | Pipe locking machine for heavy caliber high pressure composite flexible pipes used for shallow sea |
-
2014
- 2014-07-21 CN CN201410344532.7A patent/CN104141848A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62101990A (en) * | 1985-10-25 | 1987-05-12 | 住友電気工業株式会社 | Terminal section of composite pipe |
| DE102007042606A1 (en) * | 2007-09-07 | 2009-03-12 | Witzenmann Gmbh | Annular or threaded corrugated metal tube e.g. pressure-resistant fluid line, manufacturing method for air conditioner of motor vehicle, involves pulling off taper drift outwardly by channel, so that connection section is radially expanded |
| CN202028903U (en) * | 2010-11-29 | 2011-11-09 | 天津市海王星海上工程技术有限公司 | Pipe locking machine for heavy caliber high pressure composite flexible pipes used for shallow sea |
| CN201973392U (en) * | 2011-04-14 | 2011-09-14 | 厦门市卓励石化设备有限公司 | Composite hose coupler |
| CN201982846U (en) * | 2011-04-27 | 2011-09-21 | 天津市海王星海上工程技术有限公司 | Shallow sea high-pressure small-caliber composite hose coupler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714960A (en) * | 2019-11-15 | 2020-01-21 | 中国人民解放军陆军工程大学 | Connecting structure and connecting method of FRP (fiber reinforced plastic) pipe |
| CN110714960B (en) * | 2019-11-15 | 2024-03-29 | 中国人民解放军陆军工程大学 | Connection structure and connection method of FRP (fiber reinforced Plastic) pipes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20190031405A (en) | Expansion Joint Assembly | |
| CN107654772A (en) | A kind of flexible slide-in type socket joint connecting tube | |
| CN204114407U (en) | A kind of hose flange linkage structure | |
| CN203052097U (en) | Multifunctional big-head huff section | |
| CN205424098U (en) | Novel submarine pipeline connector | |
| CN104141848A (en) | Hose flange joint method | |
| CN212616918U (en) | Expansion joint for connecting pump test pipeline | |
| CN210940437U (en) | Long-range hose expansion device for repairing hose | |
| CN204187173U (en) | A kind of breakdown joint that can adapt to pipeline extension | |
| CN104819345A (en) | Reinforced steel anti-corrosion relay | |
| CN208619882U (en) | Wall bushing plugging device | |
| CN105864548A (en) | Pipeline compensator | |
| CN202220917U (en) | Pipeline connecting device | |
| CN202182270U (en) | Flange type internal expansion connecting structure for steel plastic composite pipe | |
| CN202469281U (en) | Socket and spigot polyethylene glass-reinforced plastic winding pipe | |
| CN104089139A (en) | Water pipe silencer | |
| CN202414810U (en) | Dumper | |
| CN104595611B (en) | Flexible compensator used for building drainage pipeline | |
| CN204358324U (en) | Based on the flexible expansion joint controlling excessive deformation mechanism | |
| CN202220931U (en) | Pipeline quick connecting assembly | |
| CN205938250U (en) | Diesel engine oil way pipeline connecting device | |
| CN202248215U (en) | Steel ring joint for sewer reinforced concrete water discharge pipe | |
| CN104373735A (en) | Steel pipeline compensator | |
| CN204512770U (en) | A kind of construction drainage pipeline extension compensator | |
| CN206973084U (en) | A kind of high intensity HDPE double-wall corrugated pipes being connected firmly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141112 |