WO1995033952A1 - Reinigbare molchstation - Google Patents
Reinigbare molchstation Download PDFInfo
- Publication number
- WO1995033952A1 WO1995033952A1 PCT/EP1995/001812 EP9501812W WO9533952A1 WO 1995033952 A1 WO1995033952 A1 WO 1995033952A1 EP 9501812 W EP9501812 W EP 9501812W WO 9533952 A1 WO9533952 A1 WO 9533952A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pig
- stop
- cleanable
- section
- station according
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
- B08B9/0551—Control mechanisms therefor
Definitions
- the invention relates to a cleanable pig station according to the preamble of claim 1.
- a cleanable pig station of the genre identified at the outset is known from the offer and workshop drawings of a manufacturer and supplier of piggable pipeline systems, these publications having been made available only to a limited group of users and not to a broad public.
- the known pig station is flowed through both by the product and in the case of flow cleaning by the cleaning agent, contact surfaces between the pig and the pig housing being formed by the intended fixing of the pig in the pig station, which are not accessible for adequate cleaning in the flow.
- the aim of the present invention is to remedy this.
- the invention is therefore based on the object of further developing a pig station of the type identified in the introduction in such a way that its cleanability in the flow is improved, in particular a complete cleaning of the entire pig surface should be ensured.
- the decisive difference of the pig station according to the invention compared to the known one is that after a first embodiment of the pig is positioned in its flow-around position by means of a controllable second stop in cooperation with the displaceable first stop.
- the positioning is designed in such a way that the pig has sufficient play against the components that surround it on all sides, that is to say that it has limited mobility on all sides.
- the pig is additionally positively received in a collecting basket which is connected to the displaceable first stop.
- An alternative third embodiment provides that the pig in its flowable position is positioned in its flowable position solely by means of a collecting basket connected to the displaceable first stop.
- the catch basket arranged on the displaceable first stop which, according to an advantageous embodiment according to the invention, consists of at least two bow-shaped elements which, seen in the axial direction from the inside to the outside, have a receiving opening, a passage opening constricted with respect to the latter and a radially widening catch opening form, gives the cleanable pig station further advantages.
- the newt can. even in the case of a vertical retraction movement of the pig into the enlarged cross section directed against gravity, they are securely caught and moved from its closed position into its flowable position in the enlarged cross section. This is ensured by the positive reception of the pig between at least three bow-shaped elements.
- the positive reception of the pig can be designed in such a way that it does not free itself from its positive engagement within the scope of the usual flow velocity in the enlarged cross section can. In this case, the controllable second stop is unnecessary.
- the form-fitting clasping of the pig is only overcome when it is brought into its closed position through the collecting basket and from there is pressed with the product acting upon it out of the collecting basket and into the piggable pipeline section adjoining the pig station.
- Another advantage of the positive reception of the pig in the collecting basket is that it can be easily removed from the opened pig station by means of this positive connection.
- a particularly advantageous further development of the pig station according to the invention provides a fixed stop which limits the position of the pig in its flowable position in the enlarged cross section when after the displacement of the movable first stop by a partial stroke T1, from which the end position of the displaceable first stop or of the collecting basket, which determines the position of the pig in its flow-around position in the expanded cross section, enables a displacement movement of the pig away from the controllable second stop.
- the contact surface between the pig and the movable first stop can be exposed, so that cleaning agents can also be brought up to this area otherwise covered by the stop (in the exemplary embodiment this is the end face) of the pig.
- Optimal cleaning conditions for the pig are given if, as a further embodiment of the pig station according to the invention provides, the pig outside its contact surface with the movable first stop or with the collecting basket on the fixed stop Plant finds. It has been found to be advantageous if, according to a first embodiment, the fixed stop is annular and has a central passage opening, so that cleaning agents and possibly also product flow through the pig station on the way through this central passage opening, among other things can. On the one hand, this flow control ensures a perfect and symmetrical flow around the pig, on the other hand, the flow losses due to the fixed stop are reduced to a tolerable level.
- the amount of product in the pig station which is not covered by the pig process is reduced in that the connection for the pipeline section is arranged directly at the passage of the movable first stop .
- the aforementioned interior designs also ensure that when driving through the product the pig station does not stagnate product quantities in the area of the implementation of the movable first stop.
- the all-round flow around the pig in the enlarged cross section is ensured according to another embodiment of the pig station according to the invention in that at least three spacers are provided which space the pig around the circumference in the region of the enlarged cross section from a housing of the pig station. It has proven to be expedient to design the spacers in the form of cylindrical rods, which enclose the pig on all sides with play in a cage-like manner and which are particularly easy to clean in the flow.
- a further embodiment of the pig station provides a displaceable first stop, which is expediently designed as an adjusting rod which is moved in the direction of movement of the pig by means of a first drive Pig station intervenes on the fly.
- the face of the adjustment rod becomes a pig stop when the pig station is used as a receiving station.
- the first drive can be controlled alternately with pressure medium, whereby on the one hand the displaceable first stop in one direction can be transferred with a main stroke to an end position in which the pig is in its flowable position in the expanded cross section, and on the other hand, in the same direction, the partial stroke T1 against a spring in the first drive is executable. While the displaceable first stop after its partial stroke movement T1 is brought into its initial position by the restoring spring, the restoring movement follows the main stroke by pressurizing the piston in the opposite direction. The completion of the respective end position before and after the main stroke is recorded by feedback devices which record and report the respective position of the movable first stop.
- controllable second stop is designed as a holding rod which engages in the pig station transversely to the direction of movement of the pig by means of a second drive and the end facing away from the drive is accommodated in a counter bearing in the housing of the pig station.
- the double mounting of the support rod ensures that no bending or tilting of the support rod occurs as a result of pressure forces acting on the pig, which may be supported on the support rod.
- a cleaning-technically better embodiment is ensured according to the alternative second embodiment in that the controllable second stop is formed by two plungers which are arranged diametrically and radially symmetrically to one another and in each case by means of a second drive in their engagement position at an angle of ⁇ 90 degrees, measured against the direction of extension of the pig from the pig station, intervene in its enlarged cross-section.
- This arrangement eliminates the problem of the support rod of the support rod, which is problematic in terms of cleaning technology and has to be cleaned by a special cleaning procedure. Choosing one suitable angle, at which the plunger engage in the enlarged cross section, ensures that the respective holding force on the plunger is not greater than that with purely axial support.
- a further expedient embodiment of the pig station according to the invention provides in this context that the second drive transfers the controllable second stop into the aforementioned engagement position in the non-activated state (rest position). In the uncontrolled state, the pig is accordingly positioned between the adjusting rod and the second stop (holding rod or plunger). A shift of the pig into its closed position is only possible when the two drives are linked in terms of control technology, whereby according to a further advantageous embodiment of the proposed pig station, both the engagement position of the controllable second stop and its second end position, a release position, are each detected via a feedback device.
- this stop by means of its drive by a partial stroke T2 from its engagement position in the Counter bearing in the housing can be returned in the direction of the release position.
- feedback devices are provided for detecting the position of the scraper in the scraper station.
- Such feedback devices are the according to a further advantageous embodiment proposed pig station provided with which at least the transmission position or the closed position and the flowable position of the pig are detected.
- both the second connection and the passage cross section in the enlarged cross section are each provided with a cross section which essentially corresponds to the passage cross section of the piggable pipe section corresponds.
- the pig station is provided on a rod passage designed as a cover part with a safety lock which essentially functions as a bonnet lock and which only opens the pig station allowed after their pressure relief.
- Embodiments of the cleanable pig station according to the invention are shown in the drawing and are explained below. Show it
- FIG. 1 shows a middle section through a first exemplary embodiment of the alternative first embodiment of the cleanable pig station according to the invention, the pig in its flowable position II being in an enlarged cross section;
- FIG. 2 shows the locking position I of the pig within the cleanable pig station designed according to FIG. 1; 3 shows a central section through a second exemplary embodiment according to the invention modified in relation to the pig station according to FIG. 1, in which the pig can be cleaned in its flow on all sides, and in the lower part
- Part of the representation occupies its left-hand and in the upper its right-hand end position between the two stops;
- FIG. 4a shows a central section through the part of the pig station below the line of symmetry, the displaceable first stop being shifted to the left by a partial stroke T1 and the pig resting against a fixed stop;
- FIG. 4b shows a central section through a part of the first drive, the piston of which is reset by a spring arranged in the drive relative to its position according to FIG. 4a
- T1 has reached the end position shown in FIG. 3;
- FIG. 5 shows a central section through part of the first drive according to FIGS. 4a, 4b in conjunction with feedback devices for detecting the position of the displaceable first stop or the pig;
- FIG. 6 shows a middle section through the cleanable pig station according to FIG. 2 in the region of the second drive
- FIG. 8 shows a cross section through the pig station according to FIG. 7 through the middle of the second connection.
- a cleanable pig station which can be used both as a transmitting station 1 and as a receiving station 1 *, consists of a preferably cylindrical housing 1a, to which on the one hand a piggable pipe section 7 is connected via a first connection 1b.
- the housing 1a has a first housing flange 1d, to which a first rod bushing 1g is flanged, which closes the pig station 1, 1 * on this side from the environment and in which a displaceable first stop 5a, in the form of a Adjustment rod is formed, sealingly accommodated.
- a first rod seal 10 is provided for sealing.
- the adjusting rod 5a is connected to a first drive 5, not shown, which brings the adjusting rod 5a into the illustrated end position.
- At least three spacers 1h are provided on the first rod passage 1g, which in the area of an enlarged cross-section 2 space a pig 9 circumferentially on all sides with play from the housing 1a of the pig station 1,1 *.
- the pig 9 On its side facing away from the adjusting rod 5a, the pig 9 is delimited by a controllable second stop 6a, which is preferably designed as a holding rod, the latter using a second one Drive 6 engages transversely to the direction of movement of the pig 9 in the pig station 1, 1 *.
- the housing 1a of the pigging station 1, 1 has two mutually opposite necklines, which form a first housing opening 1e on the side of the second drive 6 and a second housing opening 1f on the other side.
- the holding rod 6a In the first housing opening 1e, the holding rod 6a is seated via a second rod seal 11 within a second rod bushing 4, while in the second housing opening 1f a counter bearing 3 is provided for the end mounting of the holding rod 6
- a second connection 1c to the pig station 1, 1 * is provided for a pipe section 8, via which both product P and cleaning agent R can be supplied or removed.
- the pig 9 assumes its flowable position II between the adjusting rod 5a and the holding rod 6a, whereby its flow around in the enlarged cross section 2 is possible in both directions.
- the engagement position of the support rod 6a in the counter bearing 3 is marked III with III.
- the distance between the end face of the adjusting rod 5a and the holding rod 6a is dimensioned such that the pig 9 is fixed there with a play s.
- a brief intermittent supply of cleaning agent R during the cleaning trip ensures that the contact surfaces between the pig 9 and the end face of the adjusting rod 5a on the one hand and between the pig 9 and the holding rod 6a on the other hand are acted upon by the cleaning agent R.
- a dashed-dotted interior contour K of the pig station 1.1 * in the area of the implementation of the adjusting rod 5a is intended to illustrate how a dead space-free design of the interior of the pig station 1.1 * in this area is to be trained. This configuration ensures that no product P can stagnate in this area during product travel. For the rest, shortening the adjusting rod 5a means that the pig 9 can be brought up almost directly to the interior contour K, so that the amount of product not covered by the pigging process is reduced to a practically negligible extent.
- the pressure medium D is controlled either via the pipe section 8 or the piggable pipe section 7 and in each case discharged controlled over the other. Since the cleanable pig station 1, 1 * can also be used without restriction at the other end of the piggable pipeline section 7 as a receiving station 1 *, a description in this regard as a receiving station 1 * is unnecessary.
- Refer to the reference numerals above refer to the design of the pig station as a transmitting station 1. In the summary given below and in the claims, the reference symbols relating to the receiving station 1 * are additionally identified with an asterisk (*).
- a second preferred embodiment of the proposed cleanable pig station 1, 1 * according to the invention (FIG. 3) initially differs from that according to FIG. 1 in that the first connection 1b with a housing flange 1i and the connection 1c with a housing flange 1k is provided.
- the flowable position II of the pig 9 in the enlarged cross section 2 is detected by a feedback device 13c.
- the rest of the structure of the pig station 1, 1 * shown corresponds to that, insofar as it is a reference symbol already explained in FIGS. 1 and 2, which has already been described there, the connection 1c being arranged directly on the housing flange 1d.
- the embodiment according to FIG. 3 has a fixed stop 12 which is ring-shaped and has a central passage opening 12a and which shows the position of the scraper 9 in it Circumferential position II in the enlarged cross-section 2 is limited if, after displacement of the displaceable first stop 5a by a partial stroke T1 (see FIG. 4a) in the direction of the first drive 5, a displacement movement of the pig 9 away from the controllable second stop 6a becomes possible.
- the fixed stop 12 can be flowed through on the inside through the passage opening 12a and outside towards the housing 1a.
- the pig 9 in the flow-around position marked II with an enlarged cross-section 2 (lower illustration) comes to rest with its left end face 9a on the end face of the displaceable first stop 5a, so that between one and the pig 9 oriented conical recess 12b in the fixed stop 12 and a corresponding end-side conical configuration 9b of the pig 9, a first gap s1 is formed.
- the pig 9 assumes such a position when product or cleaning agent P or R, based on the position of the pig station 1, 1 * shown, is conveyed from right to left.
- the position of the pig 9 shown above the line of symmetry in the pig station 1, 1 * results from the inflow from the left.
- a second gap s2 which is enlarged by the play of the pig 9 between the stops 5a and 6a, is formed between the conical recess 12b in the fixed stop 12 and the pig 9.
- the pig 9 can be cleaned without gaps with the controllable second stop 6a, apart from the linear contact surface at its front right end 9a.
- the cleaning agent R is supplied intermittently, for example on the short side, so that the pig 9 carries out oscillating displacement movements within the scope of its play between the stops 5a and 6a.
- the front left contact surface 9a of the pig 9 with the associated end surface of the movable first stop 5a can then be swallowed up by the cleaning agent R brought in via the connection 1b if, as shown in FIG. 4a, the movable first stop 5a by a partial stroke T1 in Direction of the first drive 5 is shifted.
- the pig 9 assumes a washable position Ha in the enlarged cross section 2, in which its previously cleaned left-hand conical end 9b comes to rest against the correspondingly designed conical recess 12b of the fixed stop 12.
- the partial stroke T1 of the stop 5a is ensured by its end position limitation in the first drive 5.
- a piston 5b is acted upon by a second pressure medium inlet 5d (see also FIG. 5) against a spring 5e with pressure medium.
- the displaceable first stop 5a is returned to its starting position by the spring 5e, so that the pig 9 assumes its flowable position II shown in the lower part of FIG.
- the movement of the pig 9 out of its flowable position II (FIG. 3) into its closed position I (FIG. 1) is effected in that the first drive 5 (FIGS. 4a, 4b and 5) is pressurized with pressure medium via a first pressure medium connection 5c, whereby the displaceable first stop 5a moves in the direction of the first connection 1b (FIG. 3).
- the stop 5a is returned to its position shown in FIGS. 4b and 5 by reversing the pressure medium from the first to the second pressure medium inlet 5c and 5d.
- Feedback devices 13a and 13b are provided to report the respective positions of the stop 5a and thus the pig 9 (FIG. 5).
- FIG. 6 shows details of the second drive 6, with which the engagement position III of the controllable second stop 6a and the release position IV (FIG. 2) can be realized.
- the stroke movement of the controllable second stop 6a necessary for the execution of these end positions is achieved by means of a spring-loaded first piston 6b which can be acted upon by a third pressure medium connection 6d.
- a spring 6f transfers the controllable second stop 6a into the engagement position III (rest position of the second drive 6) when no pressure medium is applied.
- a second piston 6c connected to the second stop 6a can be shifted by a partial stroke T2, whereby the stop 6a changes its engagement position III in the counter bearing 3 in the housing 1a of the pig station 1, 1 * by a corresponding partial stroke leaves.
- the stop 6a changes its engagement position III in the counter bearing 3 in the housing 1a of the pig station 1, 1 * by a corresponding partial stroke leaves.
- its otherwise partially covered engagement area in the counter bearing 3 can also be cleaned properly.
- the engagement position III and the release position IV of the controllable second stop 6a are each detected via a feedback device 13d or 13e and further processed in terms of control technology in the required manner.
- the alternative second or third embodiment of the pig station according to the invention (FIGS. 7 and 8) essentially has the advantages of the pig station according to FIGS. 3 to 5. Identical or comparable components are provided with the same reference symbols. A description of the basic structure is therefore unnecessary. At this point it should only be pointed out the obvious differences and the associated additional advantages. What is striking is a collecting basket 50 connected to the displaceable first stop 5a, in which the pig 9 is positively received.
- the collecting basket 50 consists of at least three bow-shaped elements 50a, which, viewed in the axial direction from the inside out, form a receiving opening 50b, a passage opening 50c constricted with respect to the latter and a radially widening collecting opening 50d.
- a fixed stop 120 consists of two bow-shaped elements which are arranged diametrically and radially symmetrically to one another and have a convex shape in the area of their contact surface with the pig 9.
- the controllable second stop 6a is formed by two plungers which are arranged diametrically and radially symmetrically to one another and each by means of a second drive 6 in an engagement position III at an angle ⁇ 90 degrees, measured against the direction of extension of the pig 9 from the pig station 1; 1 *, intervene in their expanded cross-section 2.
- the rod bushing 1g which is designed as a cover part, there is a tab 14 which has a bayonet opening 14a into which a pin 15 connected to the housing 1a engages.
- a guide pin 16 is pressed into the cover part 1g and engages in a bore in the housing 1a which is not described in more detail.
- the cover part 1g After opening a clamping device, not specified, which connects the cover part 1g to the housing 1a of the pig station 1, 1 *, the cover part 1g must first be detached from the housing 1a in the axial direction due to the positive guidance provided by the guide pins 16.
- the Bejonett closure 14a, 15 initially prevents, if pressure is present in the pig station 1, 1 *, a violent detachment of the cover part 1g from the housing 1a. After a pressure medium possibly present in the pig station 1, 1 * has flowed out, the Bejonett lock 14a, 15 can be unlocked by twisting and the cover part 1g can be completely detached from the housing 1a.
- the pig 9 As soon as the pig 9 enters the enlarged cross section 2 from the piggable pipeline section 7, it hits the catch opening 50d of the catch basket 50, is centered there, overcomes the constricted through opening 50c by elastic deformation and then arrives in the receiving opening 50b. In this position it is positively caught by the collecting basket 50, the brackets 50a being dimensioned radially in such a way that the form-fitting receptacle ensures adequate play on all sides with respect to the pig 9.
- the pig 9 is now in its closed position marked I. From this position, it can only be moved out of the collecting basket 50 into the piggable pipe section 7 by pressurization.
- the pig 9 is now to be transferred from its closed position I into its flowable position II, this can be done in any spatial position of the cleanable pig station 1, 1 * by means of the catch basket 50, which still surrounds the pig in a form-fitting manner.
- the displaceable first stop 5a, the adjustment rod and the basket 50 connected to it moved into its other end position (flowable position II) by means of the first drive 5.
- the controllable second plunger 6a of the second drive 6, which is designed as a tappet, can be moved from its release position IV into its engagement position III.
- the pig 9 During the subsequent return of the displaceable stop 5a around the partial stroke T1, the pig 9 immediately arrives at the controllable second stop 6a (Ram) to the system, so that the positive embedding of the pig 9 in the collecting basket 50 is ensured again with play on all sides.
- the form-fitting embedding of the pig 9 in the collecting basket 50 allows it to be cleaned without the controllable second stop 6a if the flow-around device oriented in the direction of the piggable pipeline section 7 velocity does not exceed the usual values for flow and process technology.
- FIG. 8 illustrates in particular the position of the spacers 1h, the brackets 50a of the collecting basket 50 and the fixed stop 120 formed by two bow-shaped elements. It is also clear that the catch basket 50 is secured against rotation between the spacers 1h and the fixed stop 120, without special measures being required for this.
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8500222A JPH10500757A (ja) | 1994-06-03 | 1995-05-12 | 清浄化可能なスクレーパステーション |
EP95920032A EP0763176B1 (de) | 1994-06-03 | 1995-05-12 | Reinigbare molchstation |
US08/737,630 US6029302A (en) | 1995-05-12 | 1995-05-12 | Cleanable scraper station |
DE59506995T DE59506995D1 (de) | 1994-06-03 | 1995-05-12 | Reinigbare molchstation |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG9409091.2U | 1994-06-03 | ||
DE9409091 | 1994-06-03 | ||
DE9412043U DE9412043U1 (de) | 1994-06-03 | 1994-07-26 | Reinigbare Molchstation |
DEG9412043.9U | 1994-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995033952A1 true WO1995033952A1 (de) | 1995-12-14 |
Family
ID=25962128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/001812 WO1995033952A1 (de) | 1994-06-03 | 1995-05-12 | Reinigbare molchstation |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0763176B1 (de) |
JP (1) | JPH10500757A (de) |
ES (1) | ES2139208T3 (de) |
WO (1) | WO1995033952A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2744653A1 (fr) * | 1996-02-14 | 1997-08-14 | Dreano Daniel | Station permettant l'envoi ou la reception d'un ou de deux racleurs dans des installations tubulaires, dont le nettoyage s'effectue par raclage |
GB2348939A (en) * | 1999-04-06 | 2000-10-18 | Walter Robert Suttie | Cleaning chamber for pipeline pig |
WO2002061237A1 (en) * | 2001-01-30 | 2002-08-08 | Petróleo Brasileiro S.A. - Petrobras | Methods and mechanisms to set a hollow device into and to retrieve said hollow device from a flow pipe |
DE102013013220B3 (de) * | 2013-08-09 | 2014-10-23 | Gea Tuchenhagen Gmbh | Vorrichtung zur Molchhandhabung |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105246603B (zh) * | 2013-02-25 | 2017-11-14 | 乌雷什股份公司 | 卫生和无菌的清洁站 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4185809A (en) * | 1978-01-27 | 1980-01-29 | Nelson Jonnes | Method and apparatus for pulling lightweight cable |
EP0375532A1 (de) * | 1988-12-20 | 1990-06-27 | Fmc Europe S.A. | 2-Wege-Ventil zum Stromabwärts-Einbau in einer molchfähigen Flüssigkeitsverteilungsleitung |
WO1991017386A1 (de) * | 1990-04-30 | 1991-11-14 | Otto Tuchenhagen Gmbh & Co. Kg | Reinigbare molchstation |
-
1995
- 1995-05-12 JP JP8500222A patent/JPH10500757A/ja not_active Ceased
- 1995-05-12 ES ES95920032T patent/ES2139208T3/es not_active Expired - Lifetime
- 1995-05-12 EP EP95920032A patent/EP0763176B1/de not_active Expired - Lifetime
- 1995-05-12 WO PCT/EP1995/001812 patent/WO1995033952A1/de not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4185809A (en) * | 1978-01-27 | 1980-01-29 | Nelson Jonnes | Method and apparatus for pulling lightweight cable |
EP0375532A1 (de) * | 1988-12-20 | 1990-06-27 | Fmc Europe S.A. | 2-Wege-Ventil zum Stromabwärts-Einbau in einer molchfähigen Flüssigkeitsverteilungsleitung |
WO1991017386A1 (de) * | 1990-04-30 | 1991-11-14 | Otto Tuchenhagen Gmbh & Co. Kg | Reinigbare molchstation |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2744653A1 (fr) * | 1996-02-14 | 1997-08-14 | Dreano Daniel | Station permettant l'envoi ou la reception d'un ou de deux racleurs dans des installations tubulaires, dont le nettoyage s'effectue par raclage |
GB2348939A (en) * | 1999-04-06 | 2000-10-18 | Walter Robert Suttie | Cleaning chamber for pipeline pig |
GB2348939B (en) * | 1999-04-06 | 2002-11-27 | Walter Robert Suttie | Pipeline pigging apparatus |
WO2002061237A1 (en) * | 2001-01-30 | 2002-08-08 | Petróleo Brasileiro S.A. - Petrobras | Methods and mechanisms to set a hollow device into and to retrieve said hollow device from a flow pipe |
US6678954B2 (en) | 2001-01-30 | 2004-01-20 | Petroleo Brasileiro S.A. - Petrobras | Methods to set a hollow device into and to retrieve said hollow device from a flow pipe |
DE102013013220B3 (de) * | 2013-08-09 | 2014-10-23 | Gea Tuchenhagen Gmbh | Vorrichtung zur Molchhandhabung |
WO2015018477A1 (de) * | 2013-08-09 | 2015-02-12 | Gea Tuchenhagen Gmbh | Vorrichtung zur molchhandhabung |
US9719625B2 (en) | 2013-08-09 | 2017-08-01 | Gea Tuchenhagen Gmbh | Pig handling device |
Also Published As
Publication number | Publication date |
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JPH10500757A (ja) | 1998-01-20 |
EP0763176A1 (de) | 1997-03-19 |
ES2139208T3 (es) | 2000-02-01 |
EP0763176B1 (de) | 1999-10-06 |
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