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WO2003004875A1 - Dispositif pour transporter un produit a ecoulement libre et en vrac a transporter - Google Patents

Dispositif pour transporter un produit a ecoulement libre et en vrac a transporter Download PDF

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Publication number
WO2003004875A1
WO2003004875A1 PCT/EP2002/006763 EP0206763W WO03004875A1 WO 2003004875 A1 WO2003004875 A1 WO 2003004875A1 EP 0206763 W EP0206763 W EP 0206763W WO 03004875 A1 WO03004875 A1 WO 03004875A1
Authority
WO
WIPO (PCT)
Prior art keywords
delivery
conveyed
cylinder
tube
piston
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.)
Ceased
Application number
PCT/EP2002/006763
Other languages
German (de)
English (en)
Inventor
Hellmut Hurr
Gerald Fischer
Frank Pirwass
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Putzmeister AG filed Critical Putzmeister AG
Priority to EP02745395A priority Critical patent/EP1402181B1/fr
Priority to JP2003510615A priority patent/JP2004533385A/ja
Priority to DE50207116T priority patent/DE50207116D1/de
Publication of WO2003004875A1 publication Critical patent/WO2003004875A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
    • E21D9/124—Helical conveying means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F04B15/023—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous supply of fluid to the pump by gravity through a hopper, e.g. without intake valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/008—Spacing or clearance between cylinder and piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/164—Stoffing boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly

Definitions

  • the invention relates to a device for conveying flowable or pourable conveyed material with at least one delivery piston, which can preferably be pushed back and forth by hydraulic means, with a bearing tube axially leading the delivery piston on its outer surface, with an axially adjoining the bearing tube in the conveying direction, via a feed channel or hopper with filling material that can be conveyed, and with a delivery cylinder arranged axially in the displacement path of the delivery piston, connected on the inlet side to the filling chamber and on the outlet side to a discharge tube, the delivery piston releasing the filling chamber to the feed channel or hopper in its end position retracted into the storage tube and at Feed penetrates the filling space with the conveyed material and penetrates into the feed cylinder.
  • the delivery piston designed as a plunger cylinder is guided in a sliding guide of the bearing tube.
  • inward-pointing grooves for receiving wiper and fine sealing rings are screwed into the bearing tube near its end on the filling chamber side.
  • the gap between the bearing tube and the delivery piston is supplied with lubricating oil via lubrication holes in a central lubrication system.
  • the piston penetrating into the feed cylinder lies against the wall on the inlet side, so that a vacuum is created with each return stroke.
  • a cross slide is arranged in the feed pipe behind the feed cylinder, which is closed before each return stroke of the feed cylinder and opened again before each pressure stroke.
  • the high susceptibility to wear in the area of the bearing tube is a disadvantage considered.
  • the known conveying device is not readily suitable for conveying the material to be conveyed from a pressurized filling space into an atmospheric outside space without the risk of a pressure breakthrough.
  • the invention has for its object to improve the known device of the type mentioned in such a way that even when a pressure difference between the filling space and the outside space is maintained, discharge of the conveyed material in a stationary operation without a slide is possible.
  • the solution according to the invention is based on the procedural idea that an airtight plug consisting of compressed material to be conveyed is produced in the discharge tube before its outlet opening, with at least part of the plug on each delivery stroke of the delivery piston due to advancing and material which compresses via the outlet opening in the outside space is displaced.
  • the discharge tube has a free discharge opening for the material to be conveyed at its end facing away from the feed cylinder, that between the inner surface of the feed cylinder and the lateral surface of the feed piston penetrated into it, a gap for the air passage between the filling space and remains free of the pipe section and that an airtight plug is formed in the discharge pipe during conveying operation, which can be built up by moving material to be conveyed and can be pushed out via its outlet opening.
  • a preferred embodiment of the invention provides that the outlet opening of the discharge tube is formed by a diaphragm with a diaphragm diameter which is smaller than the inside diameter of the discharge tube.
  • the diaphragm is expediently detachable and / or interchangeably arranged on the discharge tube.
  • the plug is mechanically divided in the area of the outlet opening when it exits into the outside space.
  • a separating member can be arranged in the area of the outlet opening for dividing the plug portion which is forced outward during the conveying stroke.
  • a base plug In order to make this possible, it is proposed according to a preferred embodiment of the invention that, in order to produce a base plug, material to be conveyed is first compressed with the delivery piston in a space between the delivery cylinder and the discharge tube, and that the base plug thus formed with the delivery piston is then moved forward with an open space and material which condenses and is plugged out is discharged into the discharge pipe.
  • a further pipe section which cannot be penetrated by the delivery piston, and a slider which penetrates the pipe section transversely are arranged between the delivery cylinder and the discharge pipe.
  • two conveying cylinders with a subsequent discharge tube are provided, the two conveying pistons penetrating into the conveying cylinders being operable in push-pull.
  • a pipe section with a cross slide is provided between the feed cylinders and the associated discharge pipe. So that's it possible to generate the necessary material plug independently of each other in each discharge pipe.
  • the two cross slides are expediently arranged at a lateral and axial distance from one another.
  • each delivery piston is equipped with a position measuring system with which the stroke of the delivery piston can be measured at any time.
  • FIG. 1a shows a diagrammatic representation of a spoil discharge lock for use in tunnel construction
  • FIG. 1b and 1c show a side view and a top view of the discharge lock according to FIG. 1a with the feed hopper placed on the filling space;
  • FIGS. 1a to c a side view of a tunnel boring machine with discharge lock and FIGS. 1a to c;
  • FIGS. 1a to c show two longitudinal sections offset by 90 ° with respect to one another and a cross section of the delivery piston designed as a plunger cylinder of the discharge device according to FIGS. 1a to c;
  • 3a and b show an end view and a side view of the sealing cassette of the bearing tube on the filling chamber side;
  • 3c shows a section along the section line A - A of FIG. 3a; 4a to e an enlarged detail from FIG. 3c in different sectional planes A to E of FIG. 3a;
  • Fig. 5a is a plan view of the segmented scraper ring
  • Fig. 5b is a plan view of one of the cutting ring segments
  • 5c shows a section along the section line A - A of FIG. 5b;
  • FIGS. 4a to e show a side view and an inside view of a segment of the fine seal according to FIGS. 4a to e;
  • the discharge lock 8 shown in the drawing is intended for use in tunnel boring machines 1.
  • it has an obliquely upwardly directed flange plate 10 and a feed hopper 12, with which it can be connected to a transport pipe 3 equipped with a screw conveyor 2 for the waste 5 accumulating in the excavation chamber 4 of the tunnel boring machine 1.
  • the earthy or rocky overburden 5, which as a rule cannot be pumped, is fed under a pressure P> P atm UDer which is increased due to the earth pressure, a stone crusher 7 and the feed hopper 12 of the discharge lock 8 and via the discharge pipes 14 against atmospheric pressure p atm for further conveyance, for example via a belt conveyor 6 removed.
  • the two hooks 16 arranged in the vicinity of the flange plate 10 serve to facilitate assembly and maintenance.
  • the discharge lock 8 has two conveying devices or lock parts 18 which operate in push-pull and which are constructed essentially the same.
  • the two lock parts each contain a filling space 20, which are separated from one another by a partition 22 and can be fed with conveyed material via the common feed hopper 12.
  • a delivery piston 24 designed as a plunger, which can be pushed back and forth via a hydraulic drive cylinder 26.
  • a support cage 28, a bearing tube 30, one of the filling chambers 20, a delivery cylinder 32, an intermediate tube 34 with a cross slide 36 and one of the discharge tubes 14 are assigned axially one behind the other to each delivery piston 24.
  • the material to be conveyed is compressed in the feed cylinder 32, in the subsequent intermediate tube 34 and in the discharge tube 14 to form a plug so that there is an airtight seal between the filling space 20 and the outside space located outside the outlet opening 38 of the discharge tube 14.
  • Knife-like separating members 40 are located in the outlet opening 38, which break up and break up the emerging plug section.
  • a grafting must first be built up.
  • the two cross slides 36 are provided, which are offset from one another in the axial direction for reasons of space.
  • the material to be conveyed is then pressed with the respective delivery piston 24 with reduced feed force against the cross slide 36 engaging in the feed path within the intermediate tube 34 and thereby compressed to form a plug.
  • the displacement path of the delivery piston 24 is monitored by a displacement measuring system 62, 64 connected to the hydraulic drive cylinder 26.
  • the cross slides 36 are opened and the plugs are moved into the associated discharge tube 14 during the subsequent conveying strokes of the conveying piston 24 until they reach the outlet opening 38.
  • diaphragms (not shown) with different opening cross sections in the area of the outlet openings 38.
  • delivery pistons 24 and delivery cylinders 32 are dimensioned such that a gap for the air passage between the filling space 20 and the intermediate tube 34 remains free between them.
  • the inner surface of the discharge pipe, the intermediate pipe and possibly also the delivery cylinder are equipped with wear strips, which are screwed detachably from the outside through the respective pipe wall. The wear strips complement one another to form a non-circular cross-section, preferably a polygonal inner surface.
  • the lateral surface 42 of the delivery piston 24 is formed by an elongated hollow cylinder 44, the free end face of which is closed by an end plate 46 and in which the hydraulic drive cylinder 26 is located.
  • the cylinder part 48 of the drive cylinder 26 is articulated on its base part 50 via a joint 52 at the rear end of the support cage 28 and on its rod end via two support rollers 54, which are at an angular distance of 90 ° from one another have, supported and guided on the inner surface of the hollow cylinder 44.
  • the piston rod 56 of the drive cylinder is articulated on the inside of the end plate 46 via a joint 58.
  • the hinge axes of the joints 52 and 58 are perpendicular to one another and aligned with the direction of displacement of the piston rod 56.
  • the piston rod 56 has an axis-central cavity 60, into which a stainless steel tube 62, which protects a waveguide and which is fixed at the bottom end of the cylinder part, engages axially centrally.
  • a permanent magnet 64 that is fixed to the piston rod, the waveguide 62 forms the position measuring system with which the current displacement position of the delivery piston 24 can be measured.
  • the support piston 24 is supported and guided axially centrally within the bearing tube 30.
  • guide rollers 66 are arranged on the outside of the bearing tube, and their running surface 68 extends through wall openings of the bearing tube in the direction of the outer surface 42 of the delivery piston.
  • the guide rollers 66 which are made of an elastomeric material, preferably of heavy-duty polyamide, are each mounted on a bearing block 70.
  • Each bearing block is articulated at one end to a pivot bearing 72 which is fixed to the bearing tube and is screwed to the bearing tube 30 at its other end by means of a spring-assisted screw 74.
  • the running surface 68 of the guide rollers has a concave transverse curvature which is complementary to the outer surface 42 of the delivery piston 24 (FIG. 7c).
  • the guide rollers are arranged in three axial positions spaced apart from one another and in three circumferential positions spaced apart from one another in the circumferential direction, each circumferential position being equipped with two guide rollers arranged next to one another.
  • the feed piston 24 is dimensioned such that it moves out of the region of the guide rollers 66 located in the rear axial position when it is moved into the feed cylinder 32.
  • the bearing tube 30 has a sealing cassette 76, which is clamped in a floating manner between two O-rings 78, 80 in a recess in the bearing tube end with the aid of a clamping ring 82 and is easily replaceable.
  • the sealing cassette 76 has a metallic, ring-shaped base body 84, which is provided on the inside with circumferential grooves 86 for receiving a radially adjustable wiper 88 and a radially adjustable fine seal 90 made of elastomeric material.
  • the circumferential grooves 86 for the wiper 88 and for the fine seal 90 are delimited by an insert ring 94 arranged in an annular recess 92 of the base body 84. As can be seen from FIGS.
  • the wiper 88 and the fine seal 90 are composed of several segments 88 ', 90' divided in the circumferential direction, each against a radially outer elastomeric ring 96, 98 apply, and can be acted upon indirectly with a pressure medium, for example with grease.
  • the segments 88 ', 90' of the scraper 88 and the fine seal 90 have mutually complementary grooves for receiving a closed elastomeric retaining ring 104, 106 and are supported in the region of the retaining ring against the associated radially outer sealing ring 96, 98.
  • the segments 88 'of the scraper 88 do not twist in the circumferential direction, they are fixed in the circumferential direction with the aid of pins 130 inserted into the insert ring 94 via the recesses 132 in the segments 88' (see FIGS. 5a to c and Fig. 4a and d). It can be seen in FIG. 6 b that the fine sealing segments 90 ′ have steps 120 that overlap one another in the circumferential direction. In addition, the fine sealing segments 90 'are composed of two elastomeric segment parts 90 ", 90"' with different hardness.
  • the circumferential grooves 86 for the wiping segments 88 'and the fine sealing segments 90' can be acted upon independently of one another with pressure medium via channels 108, 110 in the base body.
  • the insert ring is also provided with ring channels for circumferential grooves 112, 114 which delimit the pressure medium supply and open to the edge of an annular surface 116 of the base body Mistake.
  • the circumferential grooves 112, 114 are sealed off from one another and to the outside by sealing rings 118 arranged in adjacent circumferential grooves.
  • Another channel 122 is used to supply a lubricant or flushing agent.
  • the base body On its inner surface, the base body has further circumferential grooves for receiving a grooved ring 124 and an elastomeric guide band 126.
  • the sealing cassettes 76 can be prefabricated and exchanged as a whole.
  • a mounting tube 128 is provided which is pushed out of the sealing cassette during the assembly process when the sealing cassette 76 is pushed onto the delivery piston 24.
  • the invention relates to a device for conveying flowable and pourable material to be conveyed. It has at least one delivery piston 24, which can preferably be pushed back and forth by hydraulic means 26, a bearing tube 30 axially guiding the delivery piston 24 on its outer surface 42, a filling chamber 20 axially adjoining the bearing tube in the conveying direction, which can be filled with material to be conveyed via a feed funnel 12, and an axially arranged in the displacement path of the delivery piston 24, connected on the input side to the filling chamber 20 and on the output side to a discharge pipe 14.
  • the discharge tube 14 at its end facing away from the feed cylinder 32 has a free outlet opening 38 for the material to be conveyed that between the inner surface of the feed cylinder 32 and the outer surface 42 of the feed piston 24 which has penetrated into it, a gap space for the air passage between the filling space 20 and the discharge pipe 14 remains free and that in Discharge tube 14 is formed in the conveying operation of an airtight plug which can be built up by advancing conveyed material and can be extracted via its outlet opening 38 and consists of compressed conveyed material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Feeding Of Articles To Conveyors (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Air Transport Of Granular Materials (AREA)

Abstract

La présente invention concerne un dispositif pour transporter un produit en vrac à transporter. Ce dispositif présente au moins un piston de transport (24), qui peut effectuer un mouvement de va-et-vient au moyen de systèmes hydrauliques (26), un tube de support (30), qui guide axialement le piston de transport sur sa surface de revêtement (42), une chambre de remplissage (20), qui est axialement adjacente au tube de support dans la direction de transport et qui peut être alimentée en produit à transporter par l'intermédiaire d'un entonnoir d'alimentation (12), ainsi qu'un cylindre de transport (32), qui est monté axialement sur la trajectoire de déplacement du piston de transport et qui est connecté côté admission à la chambre de remplissage et côté évacuation à un tube d'évacuation (14). Le piston de transport permet à l'entonnoir d'alimentation d'accéder à la chambre de remplissage lorsqu'il se trouve dans sa position finale, rentré dans le tube de support (30), alors que lorsqu'il avance, il pénètre dans la chambre de remplissage en entraînant le produit à transporter et rentre dans le cylindre de transport. Selon cette invention, le tube d'évacuation présente à son extrémité opposée au cylindre de transport un orifice de sortie libre (38) destiné au produit à transporter. Lors du transport, il se forme un bouchon hermétique en produit à transporter aggloméré, qui est formé par du produit à transporter en progression et qui peut être retiré par son orifice de sortie.
PCT/EP2002/006763 2001-07-04 2002-06-19 Dispositif pour transporter un produit a ecoulement libre et en vrac a transporter Ceased WO2003004875A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02745395A EP1402181B1 (fr) 2001-07-04 2002-06-19 Dispositif pour transporter un produit a ecoulement libre et en vrac a transporter
JP2003510615A JP2004533385A (ja) 2001-07-04 2002-06-19 流動性搬送物またはばら材状搬送物を搬送するための装置
DE50207116T DE50207116D1 (de) 2001-07-04 2002-06-19 Vorrichtung zum fördern von fliess- und schüttfähigem fördergut

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10131903.7 2001-07-04
DE10131903A DE10131903A1 (de) 2001-07-04 2001-07-04 Vorrichtung zum Fördern von fließ- und schüttfähigem Fördergut

Publications (1)

Publication Number Publication Date
WO2003004875A1 true WO2003004875A1 (fr) 2003-01-16

Family

ID=7690258

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/006763 Ceased WO2003004875A1 (fr) 2001-07-04 2002-06-19 Dispositif pour transporter un produit a ecoulement libre et en vrac a transporter

Country Status (6)

Country Link
EP (1) EP1402181B1 (fr)
JP (1) JP2004533385A (fr)
AT (1) ATE329154T1 (fr)
DE (2) DE10131903A1 (fr)
ES (1) ES2266526T3 (fr)
WO (1) WO2003004875A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7473347B2 (en) 2001-03-05 2009-01-06 Shell Oil Company Process to prepare a lubricating base oil
US7531081B2 (en) 2001-02-13 2009-05-12 Shell Oil Company Base oil composition
CN108953137A (zh) * 2018-08-16 2018-12-07 浙江永联民爆器材有限公司 一种无缝钢管静态敏化管路

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60305016T3 (de) † 2002-02-25 2012-02-09 Shell Internationale Research Maatschappij B.V. Verfahren zur herstellung eines katalytisch entparaffinierten gasöls oder einer katalytisch entparaffinierten gasölmischkomponente

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290737A (en) * 1979-09-14 1981-09-22 Tymen Clay Ram type pump
US4846606A (en) * 1985-01-11 1989-07-11 Kabushiki Kaisha Komatsu Seisakusho Excavated earth and sand transporting apparatus for use in a shield machine
DE4228806A1 (de) * 1992-08-29 1994-03-03 Putzmeister Maschf Vorrichtung zur Förderung von Dickstoffen
DE19524048A1 (de) * 1995-07-01 1997-01-09 Hoppecke Zoellner Sohn Accu Pumpe zur Förderung nicht fließfähiger Medien
EP0681672B1 (fr) 1993-02-02 1997-03-19 Putzmeister Aktiengesellschaft Procede permettant d'acheminer des matieres consistantes contenant des dechets metalliques prebroyes ou des solides analogues

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3874126T2 (de) * 1988-05-05 1993-03-18 Wallander Hydropress Co Ab Verfahren zum behandeln von abfall und vorrichtung zum ausfuehren des verfahrens.
DE19643491A1 (de) * 1996-10-22 1998-04-23 Putzmeister Ag Anordnung und Verfahren zur Bestimmung der Fördermenge oder des Massenstroms von mittels einer Kolbendickstoffpumpe transportiertem Fördergut

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290737A (en) * 1979-09-14 1981-09-22 Tymen Clay Ram type pump
US4846606A (en) * 1985-01-11 1989-07-11 Kabushiki Kaisha Komatsu Seisakusho Excavated earth and sand transporting apparatus for use in a shield machine
DE4228806A1 (de) * 1992-08-29 1994-03-03 Putzmeister Maschf Vorrichtung zur Förderung von Dickstoffen
EP0681672B1 (fr) 1993-02-02 1997-03-19 Putzmeister Aktiengesellschaft Procede permettant d'acheminer des matieres consistantes contenant des dechets metalliques prebroyes ou des solides analogues
DE19524048A1 (de) * 1995-07-01 1997-01-09 Hoppecke Zoellner Sohn Accu Pumpe zur Förderung nicht fließfähiger Medien

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7531081B2 (en) 2001-02-13 2009-05-12 Shell Oil Company Base oil composition
US7670996B2 (en) 2001-02-13 2010-03-02 Shell Oil Company Lubricant composition having a base oil and one or more additives, wherein the base oil has been obtained from waxy paraffinic fischer-tropsch synthesized hydrocarbons
US7473347B2 (en) 2001-03-05 2009-01-06 Shell Oil Company Process to prepare a lubricating base oil
CN108953137A (zh) * 2018-08-16 2018-12-07 浙江永联民爆器材有限公司 一种无缝钢管静态敏化管路
CN108953137B (zh) * 2018-08-16 2024-04-02 浙江永联民爆器材有限公司 一种无缝钢管静态敏化管路

Also Published As

Publication number Publication date
ATE329154T1 (de) 2006-06-15
JP2004533385A (ja) 2004-11-04
EP1402181B1 (fr) 2006-06-07
DE50207116D1 (de) 2006-07-20
EP1402181A1 (fr) 2004-03-31
ES2266526T3 (es) 2007-03-01
DE10131903A1 (de) 2003-02-13

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