CN1266156A - Double-layer pipe compensation connector - Google Patents
Double-layer pipe compensation connector Download PDFInfo
- Publication number
- CN1266156A CN1266156A CN 99103885 CN99103885A CN1266156A CN 1266156 A CN1266156 A CN 1266156A CN 99103885 CN99103885 CN 99103885 CN 99103885 A CN99103885 A CN 99103885A CN 1266156 A CN1266156 A CN 1266156A
- Authority
- CN
- China
- Prior art keywords
- cylindrical
- pipe
- endoporus
- cooperates
- sleeve
- 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.)
- Granted
Links
Images
Abstract
A new type double-layer pipeline compensation connector extensively used for double-layer pipeline in producing and conveying high-temp. medium includes such types of straight joint, elbow joint, three-way or four-way joint, and is formed from sealing ring, sealing pipe, sealing loop, brake sleeve, screwed sleeve, nut sleeve, closing sleeve, half-type bend screw sleeve and external cover, half-type three-way or four-way screw sleeve and external cover, and brake nail, screw and nut.
Description
The invention provides a kind of novel double-skin duct link, double-skin duct connection area during it is widely used in producing, lives especially is applied in production, delivery temperature variation medium double-skin duct connection area greatly, is significant.
Connecting means is that inner nonmetal pipeline is carried out flange to prior art to double-skin duct, the outside metallic conduit flanged joint that freezes is clamped and is tightly connected, this kind method connects the phenomenon that causes interior conduit to damage for temperature, adopt passive way, connecting tube is shortened, or interior conduit is carried out the connection use that the complicated ways such as heat treatment process that can not thoroughly deal with problems are again kept this type of pipeline.So this type of pipeline connects and exists at present, complex process, cost height, defective such as cost of use is big, the life-span is short, especially very short-lived in the use of high temperature media occasion.
The purpose of this invention is to provide a kind of new design scheme, it neither needs flange to freeze with the external metallization pipeline to be connected, and does not need again the metallic conduit machining screw is connected, and does not more need to the interior conduit flange heat treatment and shorten pipeline etc.But a kind of simple in structure, simple installation connects good seal, can be but to benefit ground to two kinds of lines inside and outside pipeline that coefficient differs greatly that expands of splashing, carry out temperature compensation separately and connect, thereby solve the unsolved always difficult problem of this type of pipeline connection at present.
The present invention-a kind of double-layer pipe compensation connector has straight joint form, elbow connection form, tee union, cross fitting form etc.
The double-layer pipe compensation connector of straight joint form has two kinds of A, Type Bs.The A type is made up of 1 merely hit cover, 1 sealed pipe, 1 thread bush, 4 seal rings, 2 seal rings, 2 braking sleeve, 1 nut sleeve, 2 anticorrosion circles, several braking nails.Cover is made up of the ring part of several proper width wherein, makes with anticorrosive material, and outer garden cooperates with the sealed pipe endoporus, and endoporus cooperates with the outer garden of interior conduit; Wherein sealed pipe is 1 straight shape pipe fitting, and endoporus cooperates with the outer garden of middle cover, and outer garden cooperates with garden in the recessed shoulder of thread bush, makes with anticorrosive material; Wherein thread bush is that 1 thread bush pipe fitting, outer garden one end have convex shoulder, several muscle are arranged on the convex shoulder, endoporus one end has tapering to cooperate with braking sleeve, endoporus has recessed shoulder, the garden cooperates with the outer garden of sealed pipe in the recessed shoulder, endoporus cooperates with the outer garden of Outer Tube, and the outer garden the other end has little convex shoulder, and little convex shoulder has screw thread to cooperate with nut sleeve to the outer garden of end face; Wherein on the outer garden of nut sleeve several muscle are arranged, endoporus one end has tapering to cooperate with braking sleeve, and endoporus cooperates with the outer garden of Outer Tube, and endoporus has recessed shoulder, and the garden has screw thread to cooperate with thread bush in the recessed shoulder; Wherein seal ring is 4 annular circles, makes with anticorrosive material, and endoporus cooperates with the outer garden of interior conduit, and outer garden cooperates with the sealed pipe endoporus, is separately positioned on 2 seal ring both sides; Wherein seal ring is 2 annular circles, makes with the material with certain elasticity and corrosion resistant performance, and endoporus cooperates with the outer garden of interior conduit, and outer garden cooperates with the sealed pipe endoporus, is separately positioned on left and right sides interior conduit outward between garden, sealed pipe endoporus, 2 the seal ring sides; Wherein braking sleeve is 2 sleeve parts, outer garden one end has tapering to cooperate with thread bush or nut sleeve hole taper, endoporus cooperates with the outer garden of interior conduit, endoporus has recessed shoulder, the garden cooperates with the outer garden of Outer Tube in the recessed shoulder, and there is groove in the garden in the recessed shoulder, on the tube wall of garden long lumbar hole or hole, garden is arranged in the recessed shoulder, hole tube wall in garden outside tapering has seam, and outer garden cooperates with the sealed pipe endoporus; Wherein anticorrosion circle is 2 annular garden circles, and 1 is enclosed within on the outer garden of thread bush screw thread clearing end, and another is enclosed within on the outer garden of a braking sleeve, and it is isolated with outer Jie's air to be used for shutting screw thread, reaches antirust, is convenient to dismantle purpose.Type B is by 1 merely hit cover, 1 sealed pipe, and 1 overcoat, 4 seal rings, 2 seal rings, 2 braking sleeve, 4 anticorrosion circles, 2 gripping sleeves, several braking nails, bolt, nuts are formed.Wherein overcoat is 1 straight shape pipe fitting, and there is convex shoulder two head rest ends, outer garden, and there are tapering or several diagonal bars in the outer garden of two convex shoulders in the garden outside overcoat is middle, and the overcoat endoporus cooperates with the outer garden of sealed pipe; Wherein gripping sleeve is 2 sleeve parts, outer garden one end directly upwards has to stretch to be taken, stretch cost porose, stretch and take the top and to the outer garden the other end two diagonal bars are arranged, in the middle of two diagonal bars, bolt can pass, endoporus one end has tapering to cooperate with braking sleeve, endoporus has recessed shoulder, and circle cooperates with overcoat end cylindrical in the recessed shoulder, and endoporus cooperates with the outer garden of Outer Tube; Wherein bolt, nut are several outer-hexagonal bolts, nut standard piece; All the other all in addition part shape and structure and cooperate all identical with corresponding other part in the above A type.
The double-layer pipe compensation connector of elbow connection form has two kinds of A, Type Bs.The A type is made up of 2 merely hit covers, 1 curved sealed pipe, 1 half-type bend pipe thread bush, 4 seal rings, 2 seal rings, 2 braking sleeve, 4 anticorrosion circles, 2 nut sleeve, several braking nails.Cover is 2 sleeve parts wherein, and outer garden cooperates with garden in the recessed shoulder of curved sealed pipe, and endoporus cooperates with the outer garden of interior conduit; Wherein curved sealed pipe is 1 bending pipe fitting, and the two ends endoporus has recessed shoulder, and recessed shoulder Nei Yuan cooperates with middle cover, seal ring, seal ring, the outer garden of braking sleeve, makes with anticorrosive material; Wherein half-type bend pipe thread bush is synthetic 1 the bend pipe threaded fitting that whole garden is removable of 2 half garden bend pipe threaded fittings, and two ends Wai Yuan has screw thread, and the screw thread termination has convex shoulder, and endoporus cooperates with the outer garden of curved sealed pipe; The shape and structure of all the other all parts and cooperate all identical with corresponding part in the above straight joint form A type.Type B is made up of 2 merely hit covers, 1 curved sealed pipe, 1 half-type bend pipe overcoat, 4 seal rings, 2 seal rings, 2 braking sleeve, 4 anticorrosion circles, 2 gripping sleeves, several braking nails, bolt, nuts.Wherein half-type bend pipe overcoat is synthetic 1 the removable bend pipe spare of full circle of 2 semicircle bend pipe spares, cylindrical rear portion, two ends radially has several to stretch to take, stretch cost porose, stretch and take the top and two diagonal bars are arranged to the cylindrical rear portion, article two, between the diagonal bar, bolt can pass, and the cylindrical front end cooperates with circle in the recessed shoulder of gripping sleeve; Wherein the shape and structure of gripping sleeve and cooperation thereof are identical with gripping sleeve in the above straight joint form Type B; The shape of all the other all parts, structure and cooperation thereof are all identical with corresponding part in the above elbow connection form A type.
The double-layer pipe compensation connector of threeway or cross fitting form has two kinds of A, Type Bs.The A type is made up of 3 or 4 merely hit cover, 1 threeway or four-way sealed pipe, 1 half-type threeway or four-way thread bush, 6 or 8 seal rings, 3 or 4 seal rings, 3 or 4 braking sleeve, 6 or 8 anticorrosion circles, several braking nails.Wherein half-type threeway or four-way thread bush are synthetic 1 whole garden threeway of 2 half garden threeways or four-way threaded fitting or four-way threaded fitting, there is screw thread in the outer garden of three ends or four ends, the screw thread termination has convex shoulder, and three ends or four end endoporus cooperate with threeway or the outer garden of four-way sealed pipe; Wherein threeway or four-way sealed pipe are 1 threeway or four-way pipe fitting, and three ends or four end endoporus have recessed shoulder, and recessed shoulder Nei Yuan cooperates with middle cover, seal ring, seal ring, the outer garden of braking sleeve, makes with anticorrosive material; The shape of all the other all parts, structure and cooperation thereof are all identical with corresponding part in the above elbow connection form A type.Type B is made up of 3 merely hit cover, 1 threeway or four-way sealed pipe, 1 half-type threeway or four-way overcoat, 6 or 8 seal rings, 3 or 4 seal rings, 3 or 4 braking sleeve, 6 or 8 anticorrosion circles, several braking nails, bolt, nuts.Wherein half-type threeway or four-way overcoat are synthetic 1 threeway or the four-way pipe fitting that whole garden is removable of 2 half garden threeways or four-way pipe fitting, its three end or four end shapes, structure and cooperation thereof, and the shape and structure of all the other all parts and cooperation thereof, all identical with corresponding part in the above elbow connection form Type B.
Below in conjunction with figure of the present invention installing and using made an explanation:
Fig. 1: the double-layer pipe compensation connector structural drawing of A type straight joint form.
Fig. 2: the double-layer pipe compensation connector structural drawing of Type B straight joint form.
Fig. 3: double-layer pipe compensation connector parts drawing.
Fig. 4: the double-layer pipe compensation connector structural drawing of A type elbow connection form.
Fig. 5: the double-layer pipe compensation connector structural drawing of 8 type elbow connection forms.
Structural drawing of the present invention, part number in the figure part name: 1: middle cover.2: sealed pipe.3a: thread bush.3b: overcoat.4: seal ring.5: seal ring.6: braking sleeve.7: the braking nail.8: anticorrosion circle.9a: nut sleeve.9b: gripping sleeve.10: Outer Tube.11: interior conduit.12: nut.13: bolt.21: curved sealed pipe.22a: half-type bend pipe thread bush.22b: half-type bend pipe overcoat
Of the present invention installing and using with Fig. 1 is that example is described as follows:
At first the double-skin duct that the present invention adopts should be described, its inside and outside pipeline is in the running fit state, and interior conduit stretches out the Outer Tube certain-length.
When beginning to install, earlier interior conduit is advanced certain-length in the Outer Tube, not influence punching degree of being, after then several depressions or hole being beaten in location on the garden tube wall outside the Outer Tube end with special tool, again interior conduit is stretched out certain-length, be taken up in order of priority then part 9a, 3a, 2,8,6,4,5,1 is inserted on the outer garden of two double-skin ducts, with part 6 location, part 7 is stained with the pipe tap of stickum by part 6 again, puts into the pipe tap of Outer Tube 10, again with part 9a, 3a, 2 close up to the centre, make the screw thread of 9a precession 3a, promote part 6,7 drive Outer Tube 10, promote part 4, compresses seal 5 reaches the purpose that tensioner is tightly connected.
Be that example is described as follows again with Fig. 2:
Beginning process and last same, when the cover part, then be taken up in order of priority part 9b, 3b, 2,8,6,5,1 are inserted on the outer garden of two double-skin ducts, equally with part 6 location, part 7 is stained with stickum, put into the pipe tap of Outer Tube 10 by the pipe tap of part 6, again part 9b, 3b, 2 are closed up to the centre, take the hole by stretching of part 9b and nut 12 screws with bolt 13, promote part 6,7 and drive Outer Tube 10, promote part 4, compresses seal 5 reaches the purpose that tensioner is tightly connected.
For the operating process of installing and using of the double-layer pipe compensation connector of elbow connection form and threeway or cross fitting form, all basic identical with the double-layer pipe compensation connector of above straight joint form.
From above the design's structural drawing, be not difficult to find out, when temperature causes inside and outside pipeline to produce the rising-heat contracting-cold amount that differs greatly, each self extending between them, irrelevant mutually, it is flexible that Outer Tube can carry out temperature compensation by the long lumbar hole on the part 6, and interior conduit can carry out temperature compensation with the space of leaving by the tension of seal ring 5 and stretch, therefore, the present invention can properly solve the existing problems on current this type of pipeline connection technology.
Claims (10)
1, a kind of double-layer pipe compensation connector is the bilayer compensation pipe jointer of straight joint form, and two kinds of A, Type Bs are arranged.The A type is by 1 cover of merely hitting, 1 sealed pipe, and 1 thread bush, 4 seal rings, 2 seal rings, 2 braking sleeve, 2 anticorrosion circles, 1 nut sleeve, several braking nails are formed.It is characterized in that middle cover, be made up of the ring part of several proper width that the ring endoporus cooperates with the interior conduit cylindrical, cylindrical cooperates with the sealed pipe endoporus; Sealed pipe is 1 straight shape pipe fitting, and cylindrical cooperates with the thread bush endoporus; Thread bush is 1 straight shape pipe fitting, endoporus one end has tapering, endoporus cooperates with the Outer Tube cylindrical, endoporus has recessed shoulder, circle cooperates with the sealed pipe cylindrical in the recessed shoulder, and cylindrical one end has convex shoulder, and several muscle are arranged on the convex shoulder cylindrical, the other end cylindrical has little convex shoulder, and little convex shoulder has screw thread to cooperate with nut sleeve to the cylindrical of end face; Nut sleeve is 1 threaded fitting, and several muscle are arranged on the cylindrical, and endoporus has recessed shoulder, and circle has screw thread in the recessed shoulder, and endoporus cooperates with the Outer Tube cylindrical, and endoporus one end has tapering and braking sleeve cylindrical taper fit; Braking sleeve is 2 sleeve parts, and cylindrical one end has tapering, and endoporus cooperates with the interior conduit cylindrical, and endoporus has recessed shoulder, and circle cooperates with the Outer Tube cylindrical in the recessed shoulder, and is porose on the pipe wall in the recessed shoulder, is furnished with the braking nail in the hole, and hole tube wall of nose circle outside tapering has seam; Seal ring is 4 annulus, and cylindrical cooperates with sealed pipe, and endoporus cooperates with the interior conduit cylindrical; Seal ring is 2 annulus, and endoporus cooperates with the interior conduit cylindrical, and cylindrical cooperates with the sealed pipe endoporus; Anticorrosion circle is 2 annular rings, and wherein 1 is enclosed within on the thread bush one end cylindrical, and 1 is enclosed within respectively on 1 braking sleeve cylindrical in addition.Type B is by 1 cover of merely hitting, 1 sealed pipe, and 1 overcoat, 4 seal rings, 2 seal rings, 2 braking sleeve, 2 gripping sleeves, 4 anticorrosion circles, several braking nails, bolt, nuts are formed.It is characterized in that overcoat is 1 straight tube shape pipe fitting, endoporus cooperates with the sealed pipe cylindrical, and the two ends cylindrical cooperates with circle in the recessed shoulder of gripping sleeve; Gripping sleeve is 2 sleeve parts, and cylindrical one end has several to stretch to take, and stretches to cost porosely, stretches and takes the top and to the cylindrical the other end two diagonal bars are arranged, and between two diagonal bars, bolt can pass, and endoporus has recessed shoulder, and endoporus has tapering to recessed shoulder, and endoporus cooperates with the Outer Tube cylindrical; Bolt, nut are outer-hexagonal bolt, nut standard piece, the shape and structure of all the other all parts and cooperate all identical with corresponding part in the above A type.
2, the double-layer pipe compensation connector that is the straight joint form according to the said a kind of double-layer pipe compensation connector of claim 1, it is characterized in that: thread bush cylindrical one end has convex shoulder, several muscle are arranged on the convex shoulder cylindrical, the other end has little convex shoulder, little convex shoulder has screw thread to the cylindrical of end face, endoporus has recessed shoulder, and circle cooperates with the sealed pipe cylindrical in the recessed shoulder, and endoporus one end has tapering.
3, the double-deck compensation connector that is the straight joint form according to the said a kind of double-deck compensation connector of claim 1, it is characterized in that: seal ring is 2 annular circles, make with material with certain elasticity and corrosion resistant performance, be separately positioned on left and right sides interior conduit cylindrical, the sealed pipe endoporus is between the end face of 2 seal rings.
4, the double-layer pipe compensation connector that is the straight joint form according to the said a kind of double-layer pipe compensation connector of claim 1, it is characterized in that: braking sleeve is 2 sleeve parts, cylindrical cooperates with the sealed pipe endoporus, cylindrical one end has tapering, and endoporus cooperates with the interior conduit cylindrical, and endoporus has recessed shoulder, on the circle groove is arranged in the recessed shoulder, circle cooperates with the Outer Tube cylindrical in the recessed shoulder, and porose on the pipe wall in the recessed shoulder, hole tube wall of nose circle outside tapering has seam.
5, the double-layer pipe compensation connector that is the straight joint form according to claim 1 or 4 said a kind of double-layer pipe compensation connectors, it is characterized in that: the hole on the braking sleeve tube wall is a long lumbar hole.
6, the double-layer pipe compensation connector that is the straight joint form according to the said a kind of double-layer pipe compensation connector of claim 1, it is characterized in that: nut sleeve is 1 thread bush pipe fitting, several muscle are arranged on the cylindrical, endoporus one end has tapering, endoporus cooperates with the Outer Tube cylindrical, endoporus has recessed shoulder, and circle has screw thread in the recessed shoulder.
7, the double-layer pipe compensation connector that is the straight joint form according to the said a kind of double-layer pipe compensation connector of claim 1, it is characterized in that: the braking nail is the cylindrical body that several cylindricals have convex shoulder, is arranged in brake casing pipe tap and Outer Tube mounting hole or the depression.
8, the double-layer pipe compensation connector that is the straight joint form according to the said a kind of double-layer pipe compensation connector of claim 1, it is characterized in that: overcoat is 1 straight shape pipe fitting, there is convex shoulder on the cylindrical both sides by the end, the convex shoulder cylindrical has tapering or several diagonal bars is arranged to the middle cylindrical of overcoat, and the overcoat endoporus cooperates with the sealed pipe cylindrical.
9, a kind of double-layer pipe compensation connector is that the double-layer pipe compensation connector of elbow connection form has two kinds of A, Type Bs.The A type is by 2 covers of merely hitting, 1 curved sealed pipe, and 1 half-type bend pipe thread bush, 4 seal rings, 2 seal rings, 2 braking sleeve, 4 anticorrosion circles, 2 nut sleeve, several braking nails are formed.It is characterized in that half-type bend pipe thread bush by synthetic 1 threaded fitting that full circle is removable of 2 semicircle threaded fittings, this kind bend pipe thread bush two ends cylindrical has screw thread, and the screw thread termination has the cylindrical convex shoulder, and the two ends endoporus cooperates with curved sealed pipe cylindrical; Curved sealed pipe is 1 bend pipe spare, and cylindrical cooperates with half-type bend pipe thread bush endoporus, and endoporus has recessed shoulder, and circle cooperates with the cylindrical of middle cover, seal ring, seal ring, braking sleeve in the recessed shoulder, makes with anticorrosive material; The shape and structure of all the other all parts and cooperate all identical with corresponding part in the straight joint form A type.Type B is by 2 covers of merely hitting, 1 curved sealed pipe, and 1 half-type bend pipe overcoat, 4 seal rings, 2 seal rings, 2 braking sleeve, 4 anticorrosion circles, 2 gripping sleeves, several braking nails, bolt, nut are formed.It is characterized in that half-type bend pipe overcoat is synthetic 1 the removable bend pipe spare of full circle of 2 bending semicircle pipe fittings, it upwards has several to stretch near two ends outer circle diameters to take, stretch cost porose, stretch and take the top and two diagonal bars are arranged to the cylindrical rear portion, article two, between the diagonal bar, bolt can pass, and the end cylindrical cooperates with circle in the recessed shoulder of gripping sleeve, and endoporus cooperates with curved sealed pipe cylindrical; Gripping sleeve is 2 sleeve parts, cylindrical one end directly upwards has several to stretch to take, stretch cost porose, stretch and take the top and two diagonal bars are arranged to the cylindrical the other end, article two, bolt can pass between the diagonal bar, and endoporus one end has tapering, and endoporus cooperates with the Outer Tube cylindrical, endoporus has recessed shoulder, and circle cooperates with the end cylindrical of half-type bend pipe overcoat in the recessed shoulder; The shape of all the other all parts, structure and cooperation thereof are all identical with corresponding part in the above A shape.
10, a kind of double-layer pipe compensation connector is the double-layer pipe compensation connector of threeway or cross fitting form, and two kinds of A, Type Bs are arranged.The A type is by 3 or 4 covers of merely hitting, 1 threeway or four-way sealed pipe, and 1 half-type threeway or four-way thread bush, 6 or 8 seal rings, 3 or 4 seal rings, 3 or 4 braking sleeve, 6 or 8 anticorrosion circles, 3 or 4 nut sleeve, several braking nails are formed.It is characterized in that half-type threeway or four-way thread bush by 2 threeways or synthetic 1 threeway or the four-way threaded fitting that full circle is removable of four-way semicircle threaded fitting, its end shape structure and cooperation thereof are identical with above half-type bend pipe thread bush; The shape and structure of all the other all parts and cooperate all identical with corresponding part in the above elbow connection form A type.Type B is by 3 or 4 covers of merely hitting, 1 threeway or four-way sealed pipe, and 1 half-type threeway or four-way overcoat, 6 or 8 seal rings, 3 or 4 seal rings, 3 or 4 braking sleeve, 6 or 8 anticorrosion circles, 3 or 4 gripping sleeves, several braking nails, bolt, nuts are formed.It is characterized in that half-type threeway or four-way overcoat by synthetic 1 threeway or the four-way pipe fitting that full circle is removable of 2 threeways or four-way semicircle pipe fitting, the shape and structure of its end shape structure and cooperation thereof and identical all the other all parts of above half-type bend pipe overcoat and cooperation thereof all with above elbow connection form Type B in corresponding part identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99103885 CN1117941C (en) | 1999-03-06 | 1999-03-06 | Double-layer pipe compensation connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99103885 CN1117941C (en) | 1999-03-06 | 1999-03-06 | Double-layer pipe compensation connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1266156A true CN1266156A (en) | 2000-09-13 |
| CN1117941C CN1117941C (en) | 2003-08-13 |
Family
ID=5271492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99103885 Expired - Fee Related CN1117941C (en) | 1999-03-06 | 1999-03-06 | Double-layer pipe compensation connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1117941C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120238753A1 (en) * | 2011-03-14 | 2012-09-20 | Vellenki Siva Rama Prasad | Process for the preparation of adefovir dipivoxil |
| CN104019324A (en) * | 2014-06-20 | 2014-09-03 | 周庆涛 | Quick repairing device for underwater double-layer oil pipeline |
-
1999
- 1999-03-06 CN CN 99103885 patent/CN1117941C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120238753A1 (en) * | 2011-03-14 | 2012-09-20 | Vellenki Siva Rama Prasad | Process for the preparation of adefovir dipivoxil |
| CN104019324A (en) * | 2014-06-20 | 2014-09-03 | 周庆涛 | Quick repairing device for underwater double-layer oil pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1117941C (en) | 2003-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105318127B (en) | A kind of quick-connect machanism of pipe | |
| CN1266156A (en) | Double-layer pipe compensation connector | |
| CN208750248U (en) | The quick PE lining plastic bridge piece of alloy | |
| CN2311682Y (en) | Pipe connecting piece | |
| CN2212697Y (en) | Pipe joint | |
| CN201193744Y (en) | Solderless stainless steel metal hose | |
| CN2888233Y (en) | Quick joint for high pressure plastic pipe | |
| CN2397341Y (en) | Pipeline connecting fittings | |
| CN2766134Y (en) | Rotary buried compensation assembly | |
| CN208074296U (en) | A kind of flaring lining stainless steel anti-corrosion drag-reducing abrasion-resisting composite steel tube pipeline | |
| CN2280193Y (en) | Quick action joint for pipeline | |
| CN2260224Y (en) | Easily disassembled and self-locking pipe joint | |
| CN201891957U (en) | Flexible pipe having valve | |
| CN204083546U (en) | A kind of three layers of composite oil pipe | |
| CN2557784Y (en) | High-strength corrosion-resistant, wearing-resistant pipe line | |
| CN208204251U (en) | A kind of ship pipe fitting for facilitating installation | |
| CN2224321Y (en) | Adaptor for pipe | |
| CN2208149Y (en) | Quick-fastening sealing pipe joint | |
| CN208919493U (en) | A kind of polyvinyl piping materials steel modeling transitional product | |
| CN219673576U (en) | Natural gas pipeline connecting device | |
| CN2185364Y (en) | Quick joint for piping | |
| CN219796414U (en) | Single-row porous flexible composite pipe with flange seal | |
| CN219866698U (en) | HDPE steel wire skeleton composite pipe convenient to connect | |
| CN2179515Y (en) | Plastic steel compound pipe having dging steel pipe cooperated with flange | |
| CN215108780U (en) | Easily-installed sealing oil pipe coupling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030813 |