WO2015126406A1 - Appareil de nettoyage de tuyau - Google Patents

Appareil de nettoyage de tuyau Download PDF

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Publication number
WO2015126406A1
WO2015126406A1 PCT/US2014/017467 US2014017467W WO2015126406A1 WO 2015126406 A1 WO2015126406 A1 WO 2015126406A1 US 2014017467 W US2014017467 W US 2014017467W WO 2015126406 A1 WO2015126406 A1 WO 2015126406A1
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WO
WIPO (PCT)
Prior art keywords
pipe
assembly
jaw
carriage
carried
Prior art date
Application number
PCT/US2014/017467
Other languages
English (en)
Inventor
Tandia BLAKE
Cody Martin
Joseph P. WADE
Original Assignee
Cadillac Coating Company, Llc
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 Cadillac Coating Company, Llc filed Critical Cadillac Coating Company, Llc
Priority to PCT/US2014/017467 priority Critical patent/WO2015126406A1/fr
Publication of WO2015126406A1 publication Critical patent/WO2015126406A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/06—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/086—Descaling; Removing coating films

Definitions

  • Illustrative embodiments of the disclosure generally relate to apparatuses for reconditioning the exterior surfaces of underground pipes. vSore particularly, illustrative embodiments of the disclosure relate to a pipe cleaning apparatus which is simple in design and is suitable for expeditiously and efficiently removing rust, dirt, residual coatings and/or other contaminants from the exterior surface of a pipe in reconditioning of the pipe.
  • Underground pipes are frequently used to convey various fluids suc as water, crude oil and natural gas.
  • One of the drawbacks of using underground pipes to convey such fluids is that the buried pipes have a tendency to corrode over time. Therefore, before the pipes are buried, the exterior surfaces of the pipes are often coated with a protective corrosion-resistant primer or coating or wrapped in protective tape.
  • the protective primer, coating or tape typically delays but does not indefinitely prevent corrosion of the pipe since it is gradually eroded from the surface of the pipe.
  • the exterior surfaces of underground pipes may require periodic reconditioning to curtail the effects of corrosion and extend the service life of the pipes.
  • an underground pipe ma be removed from the ground and contaminants such as rust and dirt and any residual coating may be initially removed from the exterior surface of the pipe.
  • a replacement protective primer or coating may then be applied to the exterior surface of the pipe before the pipe is again buried.
  • One method of removing the contaminants and residual coating from the pipe may include blasting a particulate material such as metal shot or sand particles against the exterior surface of the pipe to dislodge the contaminants and/or residual coating from the pipe surface.
  • conventional apparatuses which are used to blast or dislodge contaminants and coatings from the surface of a pipe in reconditioning of the pipe are often comp!ex in design and slow and laborious to set up, operate and disassemble.
  • the disclosure is generally directed to a pipe cleaning apparatus which is simple in design and suitable for expeditiousiy and efficiently removing contaminants and coatings from the exterior surface of a pipe in reconditioning of the pipe.
  • An illustrative embodiment of the pipe cleaning apparatus includes an apparatus support frame having an elongated carriage frame member; at least one pipe blasting assembly carried by the carriage frame member of the apparatus support frame and including an assembly carriage carried by the carriage frame member, a pair of generally elongated, semicircular assembly jaws pivotaily carried by the assembly carriage and each having a jaw interior, a plurality of spaced-apart blast nozzles carried by each of the assembly jaws in the jaw interior and a blast pump communicating with the plurality of blast nozzles; and a linear actuator engaging the at least one pipe blasting assembly and operable to facilitate travel of the pipe blasting assembly along the carriage frame member.
  • FIG. 1 is a perspective view of an illustrative embodiment of the pipe cleaning apparatus, placed in functional position on a pipe in exemplary application of the apparatus;
  • FIG. 2 is a side view of an iiiusirative embodiment of the pipe cieaning apparatus placed in functional position on the pipe;
  • FIG. 3 is an end view of an iiiusirative embodiment of the pipe cleaning; apparatus placed in functional position on the pipe, with a pair of assembly jaws of the apparatus dosed around the pipe;
  • FiG. 4 is an end view of an illustrative embodiment of the pipe cieaning apparatus piaced in functions! position on the pipe (illustrated in cross-section), with the assembly jaws of the apparatus in an open position;
  • FIG. 5 is a sectionai view of a portion of an assembly jaw of an iiiustratsve embodiment of the pipe cieaning apparatus, piaced in functional position on a pipe (illustrated in section) and more particularly illustrating ejection of particulate material against the exterior surface of the pipe in exemplary application of the apparatus;
  • FIG. 5A is a cross-sectional view of an assembly jaw engaging an exterior surface of a pipe
  • FIG. 6 is a block diagram of an illustrative embodiment of the pipe cleaning apparatus, more particularly illustrating exemplary connection of a particulate material reservoir and a blast pump to the various functional components of the apparatus;
  • FIG. 7 is a block diagram of an apparatus control system which is suitable for operation of an illustrative embodiment of the pipe cleaning apparatus
  • FIG. 8 is a side view of an illustrative embodiment of a pipe reconditioning system which utilizes an iiiusirative embodiment of the pipe cleaning apparatus;
  • FiG. 9 is a sectional view of a portion of an assembly jaw of an illustrative embodiment of a pipe coating apparatus of the pipe reconditioning system illustrated in FIG. 8, piaced in functional position on a pipe ⁇ illustrated in section) and more particularly illustrating spraying of a protective coating liquid against the exterior surface of the pipe in exemplary application of the apparatus;
  • FIG. 10 is a sectional view of a portion of an assembly jaw of an illustrative embodiment of a pipe heating assembly of the pipe reconditioning system illustrated in FIG. 8, placed in functional position on a pipe (illustrated in section) and more particularly illustrating heating of the pipe to cure the sprayed-on protective coating liquid in exemplary application of the pipe heating assembly;
  • FIG. 1 1 is a functional block diagram of an illustrative embodiment of the pipe reconditioning system
  • FIG. 12 is a perspective view of an alternative illustrative embodiment of the pipe cleaning apparatus, placed in functional position on a pipe in exemplary application of the apparatus;
  • FIG. 13 is a sectional view of a portion of an assembly jaw of an illustrative embodiment of the pipe cleaning apparatus illustrated in FIG. 12, placed in functional position on a pipe (illustrated in section) and more particularly illustrating ejection of particulate material against the exterior surface of the pipe in exemplary application of the apparatus;
  • FIG. 14 is a block diagram of an apparatus control system which is suitable for operation of the pipe cleaning apparatus illustrated in FIG. 12;
  • FiG. 15 is a side view of the pipe cleaning apparatus illustrated in FiG. 12, more particularly illustrating a hose hanger provided on the apparatus support frame to support blast tubing.
  • the word "exemplary” or “illustrative” means “serving as an example, instance, or illustration,” Any implementation described herein as “exemplary” or “illustrative” is not necessarily to be construed as preferred or advantageous over other implementations.
  • Ail of the implementations described below are exemplary implementations provided to enable persons skilled in the art to practice the disclosure and are not intended to limit the scope of the appended claims.
  • the illustrative embodiments described herein are not exhaustive and embodiments or implementations other than those which are described herein and which fail within the scope of the appended claims are possible.
  • the pipe cleaning apparatus 1 may include a pipe support frame 2 which may be adapted to support a pipe 90, the exterior surface 91 of which is to be cleaned by operation of the pipe cleaning apparatus 1 , as will be hereinafter described.
  • the pipe support frame 2 may include multiple pairs of spaced-apart frame legs 3 and a connecting frame member 4 which connects each pair of frame legs 3.
  • a pair of spaced-apart pipe stabilizers 5 may be provided on th connecting frame member 4. Accordingly, as illustrated in FIGS.
  • the pipe 90 ma be inserted between the pipe stabilizers 5 and rested on the respective connecting frame members 4 such that the pipe stabilizers 5 hold or stabilize the pipe 90 in place for cleaning, as will be hereinafter described, !t wiiS be recognized and understood that the pipe support frame 2 which was heretofore described with respect to FIGS. 1 -4 is only one example of a support frame which is suitable to hoid the pipe 90 in place during operation of the pipe cleaning apparatus 1 ,
  • the pipe support frame 2 may have alternative designs which are known or can be contrived by those skilled in the art and are suitable for the purpose.
  • the pipe cleaning apparatus 1 may further include an apparatus support frame 10 and at least one pipe blasting assembly 20 on the apparatus support frame 10.
  • the apparatus support frame 10 may be adapted to engage the pipe 90 and center the pipe blasting assembly 20 on the pipe 90, Accordingly, the apparatus support frame 10 may include a pair of generally parallel, spaced-apart, vertical end frame supports 1 1.
  • a generally horizontal carriage frame member 15 may connect the end frame supports 1 1.
  • a frame foot plate 12 may terminate a lower end of each end frame support 1 .
  • the frame foot plate 12 may be curved to generally match the complementary curved contour of the exterior pipe surface 91 of the pipe 90, As illustrated in FIGS.
  • a pair of frame stabilizer arms 13 may extend outwardly from opposite sides of each end frame support 1 , Each frame stabilizer arm 13 may be generally elongated and curved, as illustrated, or may have any other suitable alternative shape.
  • Frame stabilizer braces 14 may extend between the frame foot plate 12 and each frame stabilizer arm 13 for reinforcement purposes.
  • a frame stabilizer wheel 18 may be provided on each frame stabilizer arm 13.
  • the frame stabilizer wheels 16 may be adapted to engage the exterior pipe surface 91 on opposite sides of the pipe 90 and stabilize the apparatus support frame 10 on the pipe 90 in operation of the pipe cleaning apparatus 1 .
  • the apparatus support frame 10 may have alternative designs which are known by those skilled in the art and suitable for the purpose.
  • the end frame supports 1 1 may be sized and configured to rest on the ground (not illustrated) at respective ends of the pipe 90 rather than or in addition to engaging the pipe 90 at the frame foot plates 12, as illustrated.
  • Each pipe blasting assembly 20 of the pipe cleaning apparatus 1 may include an assembly carriage 21 which is adapted for bidirectional travel along the carriage frame member 15 of the apparatus support frame 10.
  • a linear actuator 26 may be provided on one of the end frame supports 1 1 of the apparatus support frame 10.
  • the linear actuator 28 may be conventional, including an actuator base 27 provided on the end frame support 11 and an elongated actuator arm
  • the actuator base 27 may engage the actuator arm 28 to facilitate extension and retraction of the actuator arm 28 with respect to the actuator base 27.
  • the distal or extending end of the actuator arm 28 may engage the assembly carriage 21 of the pipe blasting assembly 20. Accordingly, by operation of the actuator motor 29, the actuator arm 28 is selectively extended and retracted with respect to the actuator base 27 to facilitate travel of the pipe blasting assembly 20 in a selected direction on the carriage frame member 15 of the apparatus support frame 10.
  • alternative mechanisms which ar known or can be contrived by those skilled in the art may be used to move the pipe blasting assembly 20 along the frame connecting member 15 of the apparatus support frame 10.
  • Each pipe blasting assembly 20 may further include a pair of complementary assembly jaws 50 pivotally mounted on the assembly carriage 21 such as in a manner which will be hereinafter described.
  • Each assembly jaw 50 may be generally elongated and semicircular. Accordingly, the assembly jaws 50 may be positional between a closed position in which the assembly jaws 50 are closed around the pipe 90, as illustrated in FIG. 3, and an open position in which the assembly jaws 50 disengage the pipe 90, as iiiusirated in FSG. 4, As illustrated in the cross-sectional view of FIG. 5A, each assembly Jaw 50 may include an outer jaw wail 51 ; a pair of spaced-apart side jaw walls 52 which extend from the outer jaw wali 51 and a jaw interior 5 ⁇ . As illustrated in the cross-sectional view of FIG. 5A, each assembly Jaw 50 may include an outer jaw wail 51 ; a pair of spaced-apart side jaw walls 52 which extend from the outer jaw wali 51 and a jaw interior 5 ⁇ . As illustrated in
  • each assembly jaw 50 may further include a proximal jaw end 53 which is pivotaliy attached to the assembi carnage 21 and a distal jaw end 54 which is opposite the proximal jaw end 53.
  • a jaw flange 55 may terminate the distal jaw end 54 of each assembiy jaw 50.
  • the jaw flanges 55 at the distal jaw ends 54 may engage each other.
  • a suction box 60 may be provided generally at the distal jaw end 54 adjacent to the jaw flange 55 on one of the assembiy jaws 50 and communicates with the jaw interior 56 (FSG, 5A) for purposes which wi!i be hereinafter described.
  • At least one assembly jaw roller 78 may be provided on each side of each assembly jaw 50.
  • Each assembly jaw roller 78 may be mounted between a pair of roller flanges 79 which extends outwardly from a corresponding side jaw wali 52 of the assembly jaw 50. Accordingly, the jaw rollers 78 may be adapted to engage the exterior pipe surface 91 of the pipe 90 and stabilize the assembly jaws 50 on the pipe 90 when the assembly jaws 50 are deployed in the closed position on the pipe 90 as illustrated in FSG. 3.
  • each assembly jaw 50 may be pivotaliy attached to the assembly carriage 21 according to any suitable arrangement which is known by those skilled in the art.
  • a pair of spaced-apart jaw mount piates 34 may extend from opposite ends of the assembly carriage 21.
  • At least one jaw mount hinge pin 35 may extend through registering pin openings (not iiiustrated) in each jaw mount plate 34 and the proxima! jaw end 53 of the corresponding assembly jaw 50, respectively .
  • a jaw actuation mechanism 36 may operabiy engage the assembly jaws 50 to facilitate selective opening and dosing of the assembiy jaws 50.
  • the jaw actuation mechanism 38 may include at least one double-acting pneumatic jaw actuation cylinder 38 (one of which is iiiustrated in FIG. 1 ), respective ends (not numbered) of which engage the respective assembiy jaws 50.
  • the jaw actuation mechanism 36 may include a pair of double-acting pneumatic jaw actuation cylinders 38 at respective ends of the assembly carriage 21. Cylinder mount flanges 39 may mount the ends of each jaw actuation cylinder 38 to the respective assembly jaws 50.
  • a hydraulic jaw actuation motor 42 may be disposed in fluid communication with the jaw actuation cylinder 36 through hydraulic conduits 43. Accordingly, the hydraulic jaw actuation motor 42 may be operated to pump hydraulic fluid (not illustrated) through the hydraulic conduits 43 into each jaw actuation cylinder 38 to extend the jaw actuation cylinder 38 and facilitate outward pivoting of the assembly jaws 50 on the jaw mount plates 34 at the respective jaw mount hinge pins 35 and opening of the assembly jaws 50 with respect to the pipe 90, as iiiustrated in FiG. 4. Conversely, the hydraulic fluid may be released from the jaw actuation cylinder 38 through the hydraulic conduits 43 to facilitate inward pivoting of the assembly jaws 50 on the jaw mount plates 34, as iiiustrated in FIG.
  • Each blast nozzle 74 may be mounted in the jaw interior 56 of each assembly jaw 50.
  • each blast nozzle 74 may be mounted for pivoting movement in the jaw interior 56.
  • multiple boot openings 64 (FIG, 5 ⁇ may extend through the outer jaw wall 51 of the assembly jaw 50 in spaced-apart relationship to each other.
  • a flexible, typically rubber nozzle boot 66 having a nozzle opening (not illustrated) may be seated in each boot opening 64.
  • a pair of spaced-apart nozzle mount brackets 68 may be provided on the outer jaw wall 51 on opposite sides of each nozzle boot 66, A nozzle mount shaft 69 may extend between the nozzle mount brackets 68.
  • Each blast nozzle 74 may be pivotally mounted on a corresponding nozzle mount shaft 69 and extends into the Jaw interior 56 through the nozzle opening of each corresponding nozzle boot 66, as illustrated in FIG. 5.
  • a nozzle actuator motor 70 may be provided on the outer jaw wail 51 of the assembly jaw 50.
  • a motor bracket 71 may mount the nozzie actuator motor 70 to the outer jaw wall 51.
  • Nozzle linkages 75 may connect the nozzle actuator motor 70 to each blast nozzle 74.
  • the nozzle linkages 75 pivot the blast nozzles 74 in concert on the respective nozzle mount shafts 69 such that the discharge end ⁇ not numbered) of each blast nozzle 74 moves in a back-and-forth trajectory in the jaw interior 56 of the assembly jaw 50, as Illustrated in FIG, 5,
  • a blast pump 82 may be disposed in communication with each blast nozzle 74 of each assembiy jaw 50 of each pipe blasting assembiy 20 through blast tubing 83.
  • a reservoir 86 may be provided above the blast pump 82.
  • a supply of particulate material 58 (FIG. 5) may be contained in the reservoir 86.
  • the particulaie materia! 58 may be sand, metal shot or other particulate materia! which is consistent with the functional requirements of the particulate materia! 58,
  • the suction box 60 (FIGS. 1 -4 ⁇ on one of the assemb!y jaws 50 of each pipe blasting assembly 20 may be disposed in communication with the reservoir 86 through a particulate material return hose 61.
  • the blast pump 82 may be operated to draw particulate material 58 (FIG. 5) from the reservoir 88 and pump the particulate material 58 through the blast tubing 83.
  • each blast nozzie 74 may be adapted to forcefully eject the particulate materia! 58 against the exterior pipe surface 91 of the pipe 90.
  • the nozzie actuator motor 70 may be operated to pivot the blast nozzles 74 in the jaw interior 56 through the nozz!e linkages 75.
  • the blast nozzles 74 may be situated in such proximity to each other that the trajectory of the particulate materia!
  • the apparatus contro! system 92 may include a controller 93.
  • the linear actuator 28, the jaw actuation motor 42 and the nozzle actuator motors 70 of each pipe blasting assembly 20 5 as well as the blast pump 82, may interface with the controller 93.
  • the controller 93 may be programmed to coordinate and operate the linear actuator 26, the jaw actuation motor 42 and the nozzle actuator motors 70 of each pipe blasting assembly 20 and the blast pump 82 during operation of the pipe cleaning apparatus 1 which will be hereinafter described.
  • a pipe 90 is placed in a generally horizontal position on the connecting frame members 4 between the pipe stabilizers 5 of the pipe support frame 2.
  • the pipe 90 is placed in a generally horizontal position on the connecting frame members 4 between the pipe stabilizers 5 of the pipe support frame 2.
  • the apparatus support frame 10 is faced on the pipe 90 with the frame foot plates 12 and each pair of frame stabilizing wheels 16 on the frame stabilizing arms 13 typically engaging the exterior pipe surface 91. As it is lowered in place on the pipe 90 using a hoisting apparatus ⁇ not iiiustrated) which is suitable for the purpose, the assembly jaws 50 of the pipe blasting assembiy 20 ma be opened to the maximum position (FIG. 4) by operation of the jaw actuation motor 42 (RG.
  • the jaw actuation motor 42 may again be operated to close the assembly jaws 50 against the respective sides of the pipe 90, as iiiustrated in FIG. 3.
  • the linear actuator 28 may e operated to initially position the pipe blasting assembly 20 at one end of the carriage frame member 15 of the apparatus support frame 10.
  • a supply of the particulate material 58 (F!G. 5) is placed in the reservoir 86 (FIG. 6),
  • the blast tubing 83 is connected to the Wast pump 82 and to the respective blast nozzles 74 of each assembiy jaw 50.
  • the particulate material return hose 61 is connected to the reservoir 86 and the suction box 60, as illustrated in FIG. 6.
  • the blast pump 82 is then operated to pump the particulate material 58 through the blast tubing 83 such that the particulate materia! 58 is forcefully ejected from each blast nozzle 74 against the exterior pipe surface 91 of the pipe 90, as illustrated in F!G. 5.
  • the ejected particulate material 58 dislodges the contaminants which remain on the exterior pipe surface 91 , cleaning and preparing the exterior pipe surface 91 for subsequent steps of the reconditioning process.
  • the nozzle actuator motor 70 may be operated to pivot the blast nozzles 74 in the jaw interior 56 through the nozzle linkages 75.
  • the particulate materia! 58 is ejected from each biast nozzle 74 against the pipe 90 in a back-and-forrh sweeping motion and overlaps the particulate materia! 58 which is ejected from the adjacent bias! nozzle 74.
  • the biast pump 82 creates a partial vacuum pressure in the reservoir 88 and the particulate materia! return hose 61 Consequently, partial vacuum pressure is induced in the suction box 60 at the bottom or dista! end of one of the assembly jaws 50. Therefore, after it is ejected from the b!asf nozzle 74 against the exterior pipe surface 91 , the particulate material 58 falls into the bottom portion of the jaw interior 56 and is drawn by the partial vacuum pressure into the suction box 60 and then through the particulate materia! return hose 61 back info the reservoir 86. Due to the sea!
  • the particulate material 58 remains in the jaw interior 58 of each assembly jaw 50 until it is reclaimed through the suction box 6Q, the particulate material return hose 81 and the reservoir 88, and is therefore prevented from failing from the assembly jaws 50 to the ground beneath the pipe blasting assembly 20,
  • the linear actuator 28 may be operated to move the pipe blasting assembly 20 along the carriage frame member 15 to the opposite end of the apparatus support frame 10, Accordingly, the particulate material 58 continually blasts and cleans the exterior pipe surface 91 throughout substantially the entire length of the pipe 90 during travel of the pipe blasting assembly 20 from one end to the opposite end of the apparatus support frame 10,
  • the blast pump 82 may be turned off.
  • the jaw actuation motor 42 may then be operated to open the assembly jaws 50, as illustrated in FIG. 4, to facilitate removal of the pipe cleaning apparatus 1 from the pipe 90.
  • the first segment of the exterior pipe surface 91 may be treated as was heretofore described.
  • the assembly jaws 50 may next be opened, after which the apparatus support frame 10 is moved to an untreated segment of the pipe surface 91 which is adjacent to the treated segment.
  • the apparatus 1 is then operated to treat the untreated segment of the exterior pipe surface 91. The foregoing procedure may be repeated until the pipe surface 91 of the entire length of the pipe 90 is treated.
  • FIGS. 8-1 1 of the drawings an illustrative embodiment of a pipe reconditioning system, hereinafter system, which may utilize the pipe cleaning apparatus 1 is generally indicated by reference numeral 101.
  • elements of the system 101 which correspond to the same elements of the pipe cleaning apparatus 1 in FIGS. 1 -7 are designated by either the same numerals or by the same numerals in the 100 or 200 series.
  • the system 101 may include a pipe support frame 102 and an apparatus support frame 110 whic may have designs that are substantially the same as or similar to those of the pipe support frame 2 and the apparatus support frame 10, respectively, of the pipe cleaning apparatus 1 heretofore described with respect to FIGS. 1-4.
  • At least one pipe blasting assembl 20 may be provided on the carriage frame member 115 of the apparatus support frame 110.
  • the pip blasting assembly 20 may have a design which is substantially the same as or similar to that of the pipe Wasting assembly 20 heretofore described with respect to FIGS. 1-7.
  • At least one pipe coating assembly 120 may be provided on the carriage frame member 1 15 of the apparatus support frame 110. As illustrated in FIG. 9, in some embodiments, the pipe coating assembly 120 may have a design which is generally the same as or similar to that of the pipe blasting assembly 20 heretofore described with respect to FiGS. 1-7. Accordingly, the elements of the pipe coating assembly
  • spray nozzies 174 are adapted to spray a coating liquid 158 against the exterior pipe surface
  • Coating tubing 183 may connect each spray nozzle 174 to a pump and supply system (not illustrated) which is adapted to contain a supply of the coating liquid 158 and pump the coating liquid 58 through the coating tubing 163 to each spray nozzie 174, from which the coating liquid 158 is discharged against the exterior pipe surface 191 of the pipe 190 in the jaw interior 156.
  • the coating liquid 158 may be a protective primer or coating which may be applied to the exterior pipe surface 191 as part of a reconditioning process for the pipe 190.
  • the coating liquid 158 may be applied to the exterior pipe surface 91 after the exterior pipe surface 191 is cleaned and prepared by operation of the pipe blasting assembiy 20 as was heretofore described and heated by operation of a pipe heating assembly 220 (FiG. 8), which wiil be hereinafter described.
  • a linear actuator (not illustrated) or other suitable mechanism may engage the pipe coating assembiy 120 to facilitate bidirectional travel of the pipe coating assembly 120 along the carriage frame member 1 15 of the apparatus support frame 1 10 according to the knowledge of those ski!ied in the art.
  • surplus or excess coating liquid 158 may be reclaimed from the pipe coating assembly 120 in a manner which is similar to that which was heretofore described with respect to reclaiming of the particulate material 58 from the pipe blasting assembiy 20 of the pipe cleaning apparatus 1 in FIGS. 1 -7.
  • At least one pipe heating assembiy 220 may be provided on the carriage frame member 115 of the apparatus support frame 110.
  • the pipe heating assembly 220 may have some of the elements of the pipe blasting assembly 20 which was heretofore described with respect to FIGS, 1-7, In FIGS, 8 and 10, the elements of the pipe heating assembly 220 corresponding to the same elements of the pipe blasting assembly 20 in FIGS, 1-7 are designated by the same numerals in the 100 series.
  • the pipe heating assembiy 220 may inciude an assembly carriage 221 mounted for bidirectional travel along the carriage frame member 115 of the apparatus support frame 110; a pair of assembly jaws 250 pivotally attached to the assembly carriage 221 ; and a jaw actuation mechanism 238 adapted to selectively pivot the assembiy jaws 250 with respect to the assembiy carriage 221 between the open and closed positions with respect to the pipe 190,
  • At ieast one heating element 274 may be provided in the jaw interior 258 of each assembly jaw 250 of the pipe heating assembly 220. In some embodiments multiple, discrete heating elements 274 may be provided in the jaw interior 256 of each assembly jaw 250. In other embodiments, a single continuous heating element 274 may be provided in the jaw interior 258 of each assembly jaw 250. Electrical wiring 283 may connect each heating element 274 to a source ⁇ not illustrated) of electrical power. Therefore, the pipe heating assembly 220 is adapted to apply heat to the exterior pipe surface 191 of the pipe 90 after the pipe blasting assembiy 20 cleans the exterior pipe surface 191 and before the coating liquid 158 is applied to the exterior pipe surface 191 of the pipe 190.
  • a linear actuator ⁇ not illustrated) or other suitable mechanism may engage the pipe heating assembly 220 to facilitate bidirectional travel of the pipe heating assembiy 220 along the carriage frame member 1 15 of the apparatus support frame 1 0 according to the knowledge of those skilled in the art.
  • controller 108 may interface with each of the functional components of the pipe reconditioning system 101 to facilitate manual or automated control of the pipe reconditioning system 101.
  • the pipe blasting assembiy 20, the pipe heating assembiy 220 and the pipe coating assembly 120 may be arranged in linear order or sequence of operation on the carriage frame member 1 5 of the apparatus support frame 1 10.
  • a pipe 190 is initially placed in a generally horizontal position on the pipe support frame 102, as illustrated in FIG. 8.
  • the apparatus support frame 1 0 is then placed on the pipe 190 with the frame foot plates 1 2 and each pair of frame stabilizing wheeis 116 on the frame stabilizing arms 113 engaging the exterior pipe surface 191 .
  • the assembly jaws 50 of the pipe blasting assembly 20 the assembly jaws 150 of the pipe coating assembiy 120 and the assembiy jaws 250 of the pipe heating assembly 220 may be opened to provide sufficient clearance for placement of the respective assembly jaws 50, 150 and 250 on opposite sides of the pipe 190.
  • the pipe coating assembly 120 and the pipe heating assembly 220 are positioned in place on the pipe 190, the respective assembiy jaws 50, 150 and 250 are closed against the respective sides of the pipe 190.
  • the linear actuators (not illustrated) or other mechanisms may be operated to position the pipe Wasting assembiy 20, the pipe coating assembiy 120 and the pipe heating assembiy 220 at one end of the carriage frame member 115 of the apparatus support frame 110.
  • the pipe blasting assembly 20 is initiai!y operated to clean the exterior pipe surface 191 of the pipe 90 as was heretofore described with respect to the apparatus 1 in FIGS. 1-7.
  • the particulate material 58 ⁇ FIG. 5 is ejected against the exterior pipe surface 191 , the
  • each nozzle actuator motor 70 may pivot the blast nozzles 74 on each corresponding assembly jaw 50 in a side-to- side motion to ensure complete and uniform cleaning of the entire exterior pipe surface 191 along the length of the pipe 190. Therefore, the pipe blasting assembly 20 substantially cleans and prepares the exterior pipe surface 191 along substantially the entire length of the pipe 190 for subsequent app!ication of coating liquid 158 (FIG. 9) to the exterior pipe surface 191 by operation of the pipe coating assembly 120,
  • the pipe heating assembl 220 is next operated to apply heat to the exterior pipe surface 191 of the pipe 190 preparatory to application of the coating liquid 158 on the exterior pipe surface 191.
  • the linear actuator (not illustrated) or other mechanism moves the pipe heating assembly 220 along the carriage frame member 150 from one end to the other end of the apparatus support frame 1 10.
  • movement of the pipe heating assembly 220 along the carriage frame member 115 is stopped and operation of the pipe heating assembly 220 is terminated.
  • the pipe coating assembly 120 is next operated to apply the coating liquid 158 (FIG. 9) to the heated exterior pipe surface 191 of the pipe 190 through the coating tubing 183 and the respective spray nozzles 174, as was heretofore described with respect to FIG. 9.
  • the linear actuator (not illustrated) or other mechanism moves the pipe coatsng assembly 120 along the carriage frame member 150 from one end to the other end of the apparatus support frame 1 10.
  • each nozzle actuator motor 170 may pivot the spray nozzles 17 on each corresponding assembly jaw 150 in a side-to-side motion to ensure complete and uniform application of the coating liquid 158 to substantially the entire exterior pipe surface 191 along the length of the pipe 190.
  • the assembly jaws 50 of the pipe blasting assembly 20 the assembly jaws 150 of the pipe coating assembly 120 and the assembly jaws 250 of the pipe heating assembly 220 may be opened to facilitate removal of the pipe reconditioning system 101 from the pipe 190.
  • the first segment of the exterior pipe surface 191 may be treated as was heretofore described.
  • the assembly jaws 150 may next be opened, after which the apparatus support frame 110 is moved to an untreaied segment of the pipe surface 191 which is adjacent to the treated segment.
  • the apparatus 101 is then operated to treat the untreated segment of the exterior pipe surface 191 .
  • the foregoing procedure may be repeated until the pipe surface 191 of the entire length of the pipe 190 is treated.
  • FIGS. 12-14 of the drawings an alternative illustrative embodiment of the pipe cleaning apparatus 301 placed in functional position on a pipe 90 in exemplary application of the apparatus 301 is illustrated.
  • the apparatus 301 may be similar in design to the apparatus 1 which was heretofore described with respect to FIGS. 1 -11 , wherein like reference numerals designate like components in FIGS. 12-14,
  • an air nipple 49 may be provided on a jaw mount plate 34 or other component of the assembly carnage 21 .
  • An air compressor 46 ⁇ FIG. 14) and a pair of pneumatic hoses 47 may be connected to the air nipple 49.
  • each pneumatic hose 47 may terminate in an air nozzle 48 which is disposed in fluid communication with the jaw interior 56 of the corresponding assembly jaw 50 at the nozzle boot 60 which is nearest th distal jaw end 54 of the assembly jaw 50.
  • the air nozzle 48 may extend through a nozzle opening (not illustrated) in the nozzle boot 66.
  • each pneumatic hose 47 may extend through a hose opening (not i!lustrated) in each pair of rolier flanges 79 on each assembly jaw 50 as the pneumatic hose 47 extends in a downward course from the air nipple 49 along the assembly jaw 50 to the lowermost noz2ie boot 66.
  • Each nozzle boot 66 may include multiple layers of rubber or other resilient materials.
  • the electrical components of the apparatus 301 may utilize a Canon plug-in system for quick ring change-out.
  • an air compressor 48 may interface with the controller 93 of the apparatus control system 92 of the apparatus 301,
  • the pneumatic hose 47 may be disposed in fluid communication with the air compressor 46 through the air nipple 49 (FIG. 12).
  • the pneumatic hose 47 terminates in the air nozzle 48, which is disposed in fluid communication with the jaw interior 56 at the lowermost nozzle boot 66.
  • a quick, disconnect hose connecto 76 may be provided on each blast nozzle 74.
  • the quick disconnect hose connectors 76 facilitate ease in connecting the blast tubing 83 to the blast nozzles 74 and disconnecting the blast tubing 83 from the blast nozzles 74.
  • the lowermost blast nozzle 74a on each assembly jaw 50 may bend upwardly at a generally 90-degree angle to facilitate ease in attachment of the blast tubing 83 to the lowermost blast nozzle 74a.
  • a hose hanger 94 may be provided on the apparatus support frame 10.
  • the hose hanger 94 may include a hose hanger frame 95 which extends between and is supported by the end frame supports 11 of the apparatus support frame 10.
  • At ieast one hose support bracket 96 may be provided on the hose hanger frame 95, Multiple hose openings (not illustrated ⁇ may extend through each hose support bracket 96.
  • the blast tubing 83 for the respective blast nozzles 74 may be extended through the respective hose openings in each hose support bracket 96 such that the hose hanger 94 supports the blast tubing 83 directly over the pipe blasting assembly 20.
  • the apparatus 301 may be as was heretofore described with respect to application of the apparatus 1 which was heretofore described with respect to FIGS, 1-11.
  • the particulate material 58 may have a tendency to accumulate by gravity at the lowermost nozzle boot 88 on the assembly jaw 50.
  • the air compressor 46 (FIG. 14) may be operated to blow compressed air through the air nlpp!e 49 and the pneumatic hoses 47, respectively, such that the compressed air is discharged from the air nozz!e 48 (FIG. 13 ⁇ of each pneumatic hose 47 to dislodge the accumulated particulate material 58 at the nozzle boot 86.
  • the dislodged particulate material 58 is typically re-circulated from the jaw interior 56 through the suction box 80, the particulate material return hose 61 and the reservoir 86 (FIG 6), respectively, for re-use.

Abstract

L'invention porte sur un appareil de nettoyage de tuyau, lequel appareil comprend un bâti de support d'appareil (10) ayant un élément de chariot allongé (15); au moins un ensemble de grenaillage de tuyau (20) porté par l'élément de bâti de chariot (16) du bâti de support d'appareil (10), et comprenant un ensemble de chariot (21) porté par l'élément de bâti de chariot (15), une paire de mâchoires d'assemblage semi-circulaires globalement allongées (50) portées en pivotement par le chariot d'assemblage (21), et ayant chacune un intérieur de mâchoire (56), une pluralité de buses de grenaillage mutuellement espacées (74) portées par chacune des mâchoires d'assemblage (50) dans l'intérieur de mâchoire (56) et une pompe de grenaillage (82) communiquant avec la pluralité de buses de grenaillage (74); et un actionneur linéaire (26) venant en prise avec le ou les ensembles de grenaillage de tuyau (20) et pouvant fonctionner de façon à faciliter le déplacement de l'ensemble de grenaillage de tuyau (20) le long de l'élément de bâti de chariot (15).
PCT/US2014/017467 2014-02-20 2014-02-20 Appareil de nettoyage de tuyau WO2015126406A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2014/017467 WO2015126406A1 (fr) 2014-02-20 2014-02-20 Appareil de nettoyage de tuyau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2014/017467 WO2015126406A1 (fr) 2014-02-20 2014-02-20 Appareil de nettoyage de tuyau

Publications (1)

Publication Number Publication Date
WO2015126406A1 true WO2015126406A1 (fr) 2015-08-27

Family

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Application Number Title Priority Date Filing Date
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Country Link
WO (1) WO2015126406A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110900460A (zh) * 2019-11-21 2020-03-24 大丰市富华铸造机械有限公司 一种钢管内外壁抛丸处理机系统及处理方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212138A (en) * 1978-09-05 1980-07-15 Gary Hutchison Portable confined surface sand blast apparatus
US4953496A (en) * 1989-07-17 1990-09-04 Crc-Evans Pipeline International, Inc. High pressure water jet cleaner and coating applicator
US7331846B1 (en) * 2005-08-17 2008-02-19 Hitachi Plant Technologies, Ltd. Blasting apparatus for outer surface of pipe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212138A (en) * 1978-09-05 1980-07-15 Gary Hutchison Portable confined surface sand blast apparatus
US4953496A (en) * 1989-07-17 1990-09-04 Crc-Evans Pipeline International, Inc. High pressure water jet cleaner and coating applicator
US7331846B1 (en) * 2005-08-17 2008-02-19 Hitachi Plant Technologies, Ltd. Blasting apparatus for outer surface of pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110900460A (zh) * 2019-11-21 2020-03-24 大丰市富华铸造机械有限公司 一种钢管内外壁抛丸处理机系统及处理方法

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