A PRE-INSULATED PIPELINE ASSEMBLY
TECHNICAL FIELD
[001] The present disclosure generally relates to the field of pipeline accessories. More particularly, the present disclosure relates to a pre-insulated pipeline assembly comprising of two opposed pre-insulated tail pieces along with a pipeline valve/strainer positioned in between them.
BACKGROUND
[002] Thermal insulation of pipelines and their accessories such as valves and strainers are done to minimise heat flow and heat exchange between the pipeline and its ambient atmosphere. Such insulation would prevent corrosion of pipelines, valves and strainers due to condensation, avoid injuries to personnel if the pipelines have extreme temperatures and save energy.
[003] Manual and onsite insulation costs of the valves and strainers are high mainly because of the labour involved. Insulation of valves and strainers are problematic because of their uneven surfaces, leading to lot of air gaps during the manual onsite insulation. Also, the workmanship tends to vary rendering the insulation process inefficient. This leads to corrosion and damage of the valves and strainers which ultimately gets translated into increased capital investment and maintenance cost.
[004] In the light of aforementioned discussion, there exists a need for pre-insulated pipeline accessories, especially of valves and strainers.
[005] The patent document PCT/IB 2013/051347 discloses pre-insulated valves and strainers that overcomes the above mentioned disadvantages of manual and onsite insulation. But fitting a valve or strainer directly into the main pipeline is tedious and the insulation might be damaged during the process of installation. The present invention disclosed herein overcomes the above mentioned disadvantage by disclosing a pre-insulated pipeline assembly comprising of two opposed pre-insulated tail pieces with a pipeline valve/strainer positioned in between them that is easier to install in the main pipeline without any damage to insulation in the valve/strainer.
[006] The pre-insulated valves and strainers disclosed in the patent document PCT/IB 2013/051347 are also disadvantageous economically since an overlapping insulation should be carried out manually onsite to cover the uninsulated side flanges once the pre-insulated valves or strainers are fixed. The
manual onsite insulation is difficult because of the uneven structure of the flanges and generally covers only the outer surface of the flanges. Efforts to completely insulate the flanges by overlapping insulation tends to be inefficient leading to lots of airgaps and subsequent corrosion. This problem is overcome by the invention disclosed in the present document, wherein the pre-insulated pipeline assembly includes pre-insulated valves/strainers, pre-insulated tail pieces along with side flanges, wherein the flanges are pre-insulated both on the outer and inner surface thus preventing the need for overlapping insulation.
[007] Also, the actuator in the pre-insulated valve and the cover member in the pre-insulated Y- strainer disclosed in the above identified PCT patent document are not insulated since any insulation provided to the actuator or the cover member will be subjected to wear and tear rendering the insulation inefficient. Hence, there is a probability of heat transfer through the actuator of the valve and the cover member of the Y-strainer. The pipeline assembly disclosed herein has pre-insulated valves and strainers with supplementary insulation that overcomes the above mentioned disadvantage thus rendering the insulation of the pipelines more efficient.
BRIEF SUMMARY
[008] The following presents a simplified summary of the disclosure in order to provide a basic understanding to the reader. This summary is not an extensive overview of the disclosure and it does not identify key/critical elements of the invention or delineate the scope of the invention. Its sole purpose is to present some concepts disclosed herein in a simplified form as a prelude to the more detailed description that is presented later.
[009] Exemplary embodiments of the present disclosure are directed towards a pre-insulated pipeline assembly comprising at least one of a pre-insulated tail piece releasably attached with a pipeline accessory, wherein the pipeline accessory comprises of at least one of a pre-insulated pipeline valve and a pre-insulated pipeline strainer.
[0010] Another exemplary aspect of the present subject matter is directed towards a pre-insulated tail piece that comprises of a longitudinal hollow tubular body with a first tail piece end and a second tail piece end, wherein the first tail piece end has a flange with at least one of a flange hole.
[0011] Another exemplary aspect of the present subject matter is directed towards a method of manufacturing a pre-insulated pipeline assembly that comprises of the following steps: providing an
insulation material with a predefined closed cell content; moulding the insulation material over a tail piece, a pipeline valve and a pipeline strainer to form a pre-insulated tail piece, a pre-insulated pipeline valve and a pre-insulated pipeline strainer respectively; and assembling at least one of the pre-insulated valve and the pre-insulated strainer with at least one of a pre-insulated tail piece to form a pre-insulated pipeline assembly.
[0012] It is an object of the present invention to disclose a pre-insulated pipeline assembly that is factory assembled and is easy to install in the main pipelines.
[0013] It is another object of the present invention to disclose a pre-insulated pipeline assembly that provides efficient insulation than manual and onsite insulation of valves and strainers.
[0014] It is another object of the present invention to disclose a pre-insulated pipeline assembly that saves energy and is cost effective.
[0015] It is another object of the present invention to disclose a pre-insulated pipeline assembly that is easier to install in the main pipeline without any damage to the insulation in the valve/strainer.
[0016] It is another object of the present invention to disclose a pre-insulated pipeline assembly with tail pieces having flanges at the ends that prevents the need for overlapping insulation.
[0017] It is another object of the present invention to disclose a pre-insulated pipeline assembly, wherein the pipeline accessories comprising valves or strainers have supplementary insulation, rendering the insulation of the pipeline more efficient.
BRIEF DESCRIPTION OF DRAWINGS
[0018] Other objects and advantages of the present invention will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments, in conjunction with the accompanying drawings, wherein like reference numerals have been used to designate like elements, and wherein:
[0019] FIG. 1A is a schematic representation of the pre-insulated pipeline assembly 100 comprising of a pre-insulated pipeline valve and two pre-insulated tail pieces, in accordance with a non limiting exemplary embodiment of the present disclosure.
[0020] FIG. IB is a schematic representation of the exploded view of a pre-insulated pipeline assembly 100 comprising of a pre-insulated pipeline valve and two pre-insulated tail pieces, in accordance with a non limiting exemplary embodiment of the present disclosure.
[0021] FIG. 2 is a schematic representation of a bolt and nut assembly along with the sleeve members 200 of a pre-insulated pipeline assembly, in accordance with a non limiting exemplary embodiment of the present disclosure.
[0022] FIG. 3 is a schematic representation of a pre-insulated butterfly valve 300 with an exploded view showing the supplementary insulation, in accordance with a non limiting exemplary embodiment of the present disclosure.
[0023] FIG. 4 is a schematic representation of a Y-strainer 400 with supplementary insulation, in accordance with a non limiting exemplary embodiment of the present disclosure.
DETAILED DESCRIPTION
[0024] It is to be understood that the present disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The present disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
[0025] The use of "including", "comprising" or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms "a" and "an" herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item. Further, the use of terms "first", "second", and "third", and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
[0026] Referring to FIG. 1A, it is a schematic representation of the pre-insulated pipeline assembly 100 comprising of a pre-insulated pipeline valve and two pre-insulated tail pieces, in accordance with a non limiting exemplary embodiment of the present disclosure.
[0027] Referring to FIG. IB, it is a schematic representation of the exploded view of a pre-
insulated pipeline assembly 100 comprising of a pre-insulated pipeline valve and two pre-insulated tail pieces, in accordance with a non limiting exemplary embodiment of the present disclosure.
[0028] Referring to FIG. 2, it is a schematic representation of a bolt and nut assembly along with the sleeve members 200 of a pre-insulated pipeline assembly, in accordance with a non limiting exemplary embodiment of the present disclosure.
[0029] Referring to FIG. 3, it is a schematic representation of a pre-insulated butterfly valve 300 with an exploded view showing the supplementary insulation, in accordance with a non limiting exemplary embodiment of the present disclosure.
[0030] Referring to FIG. 4, it is a schematic representation of a Y-strainer 400 with supplementary insulation, in accordance with a non limiting exemplary embodiment of the present disclosure.
[0031] According to a non limiting exemplary embodiment of the present disclosure, a pre- insulated pipeline assembly 100 is disclosed comprising at least one of a pre-insulated tail piece releasably attached with a pipeline accessory, wherein the pipeline accessory is a pre-insulated pipeline valve 101 or a pre-insulated pipeline strainer.
[0032] In accordance with a non limiting exemplary embodiment of the present disclosure, the pre- insulated pipeline assembly 100 has two pre-insulated tail pieces opposed to each other with a pre- insulated pipeline valve 101 positioned in between them.
[0033] According to a non limiting exemplary embodiment of the present disclosure, the pre- insulated pipeline assembly 100 has two pre-insulated tail pieces opposed to each other with a pre- insulated pipeline strainer positioned in between them.
[0034] In accordance with a non limiting exemplary embodiment of the present disclosure, the pre- insulated pipeline assembly 100 is factory assembled and is easy to install in the main pipelines 110. The pre-insulated pipeline assembly 100 is joined with the main pipeline 110 by welding at both ends or by using grooved fittings or by means of flanged ends or any other suitable mechanism that is known in the art without limiting the scope of the present disclosure.
[0035] In accordance with a non limiting exemplary embodiment of the present disclosure, the pre- insulated pipeline valve 101 and the pre-insulated pipeline strainer comprise of but are not limited to
butterfly valve, dual plate check valve, balancing valve, gate valve, non-return valve, Y strainer, pot strainer and ball valve with or without strainers. Any valve and /or strainer that is known in the art can be used in the pipeline assembly without limiting the scope of the present disclosure.
[0036] In accordance with a non limiting exemplary embodiment of the present subject matter, a pre-insulated tail piece is disclosed that comprises of a longitudinal hollow tubular body 106 with a first tail piece end 104 and a second tail piece end 105, wherein the first tail piece end 104 has a first flange 107 with a plurality of flange holes 109.
[0037] According to a non limiting exemplary embodiment of the present disclosure, the first flange 107 is welded or joined by any suitable connecting means to the first tail piece end 104 of the longitudinal hollow tubular body 106 and insulation is done on the first flange 107 as well as at least part of the longitudinal hollow tubular body 106. The uninsulated part of the longitudinal, hollow, tubular body 106 is welded or joined by any suitable connecting means to the main pipeline 110. In a particular embodiment, the second tail piece end 105 has a second flange and the pre-insulated tail piece is connected to the main pipeline 110 by means of flanged ends, wherein the main pipeline also has flanged ends.
[0038] In accordance with a non limiting exemplary embodiment of the present disclosure, the two pre-insulated tail pieces are opposed to each other and are secured with the pipeline accessory through a securing means 108. The pipeline accessory is positioned in between the flanged first tail piece ends of a first pre-insulated tail piece 102 and a second pre-insulated tail piece 103.
[0039] According to a particular non limiting exemplary embodiment of the present disclosure, the securing means 108 comprises of at least one of a bolt and nut assembly 201 though any other securing means 108 can be used without limiting the scope of the present disclosure.
[0040] In accordance with a non limiting exemplary embodiment of the present disclosure, the two first tail piece ends of a first pre-insulated tail piece 102 and a second pre-insulated tail piece 103, with the pipeline accessory positioned tightly between them, are secured by assembling a bolt and nut assembly 201 through the flange holes 109.
[0041] According to a particular non limiting exemplary embodiment of the present disclosure, the bolt and nut assembly 201 is assembled through the flange hole 109 with a sleeve member 202 serving as a thermal barrier between the flange hole 109 and the bolt and nut assembly 201. In a particular
embodiment, rubber sleeves are used as sleeve members 202 though any other suitable material that would create a thermal barrier preventing metal to metal contact of flange holes 109 and bolt and nut assembly 201 can be used without limiting the scope of the present disclosure.
[0042] In accordance with a non limiting exemplary embodiment of the present disclosure, the pre- insulated pipeline assembly 100 is pre-insulated in factory using any suitable insulating material that is known in the art without limiting the scope of the present disclosure. The choice of the insulating material depends on the thermal coefficient of the insulating material.
[0043] In accordance with a non limiting exemplary embodiment of the present disclosure, the pre- insulated pipeline valve 101 in the pre-insulated pipeline assembly 100 is a butterfly valve 300 that comprises of a pre-insulated housing 301, a disc member 302, a seat 303, a stem 304, an actuator 305, a first insulation member 306 and a second insulation member 307. The stem 304 that is configured to rotate the disc member 302 about an axis, has a longitudinal shaft comprising a first end 308 and a second end 310. The first end 308 is configured to be positioned in a disc slot 309 present in the disc member 302 and a second end 310 is configured to be positioned in an actuator slot present in the actuator 305. To prevent heat transfer through the uninsulated actuator 305, supplementary insulation is provided by a first insulation member 306 and a second insulation member 307. The first insulation member 306 has a cup shaped body and is positioned between the first end 308 of the stem 304 and the disc slot 309 and is configured to serve as a thermal barrier between the stem 304 and the disc member 302. The second insulation member 307 has a cap shaped body and is positioned between the second end 310 of the stem 304 and the actuator slot and is configured to serve as a thermal barrier between the stem 304 and the actuator 305.
[0044] According to a non limiting exemplary embodiment of the present disclosure, the pre- insulated pipeline strainer in the pre-insulated pipeline assembly 100 is a Y-strainer 400 that comprises of a pre-insulated body 401, a screen mesh 402 configured to strain foreign matter, a cover 403 and at least one of a cover insulation member 404. To prevent heat transfer through the uninsulated cover 403, supplementary insulation is provided by the cover insulation member 404 that is configured to enclose the cover 403 on an outer surface and to serve as a thermal barrier between the ambient environment and the cover 403. In a particular embodiment, the cover 403 has a base plate and a head wherein the base plate is provided with a separate cover insulation member 404 and the head is provided with another cover insulation member 404.
[0045] In accordance with a non limiting exemplary embodiment of the present disclosure, a
method of manufacturing a pre-insulated pipeline assembly is disclosed that comprises of the following steps: providing an insulation material with a predefined closed cell content; moulding the insulation material over a tail piece, a pipeline valve and a pipeline strainer to form a pre-insulated tail piece, a pre-insulated pipeline valve 101 and a pre-insulated pipeline strainer 400; and assembling at least one of the pre-insulated pipeline valve 101 and the pre-insulated pipeline strainer 400 with at least one of a pre-insulated tail piece to form a pre-insulated pipeline assembly 100. In a particular embodiment, the closed cell content of the insulation material is 85%. In a particular embodiment, a pre-insulated pipeline valve 101/a pre-insulated pipeline strainer 400 is positioned between two of the pre-insulated tail piece and assembled through a securing means 108, to form a pre-insulated pipeline assembly 100, wherein the pre-insulated tail pieces are opposed to each other.
[0046] According to a non limiting exemplary embodiment of the present disclosure, the insulating material used for pre-insulating the tail piece, the pipeline valve and the pipeline strainer comprises of but are not limited to the following: rubber, nitrile foam rubber, thermocol, fiberglass, a cellular glass, a calcium silicate, polyepolyurethane, polyisocyanurate, polyethylene, polypropylene, polystyrene, foamed polystyrene, unfoamed polystyrene, polyimide, polytetrafluoroethylene, polytrifluorochloroethylene, acrylate and methacrylate polymers and copolymers, polyadipamide, polyester, polyvinyl chloride polymers and copolymers. Any other insulating material that is known in the art can be used without limiting the scope of the present disclosure.
[0047] Although the present disclosure has been described in terms of certain preferred embodiments and illustrations thereof, other embodiments and modifications to preferred embodiments may be possible that are within the principles and spirit of the invention. The above descriptions and figures are therefore to be regarded as illustrative and not restrictive.
[0048] Thus the scope of the present disclosure is defined by the appended claims and includes both combinations and sub combinations of the various features described herein above as well as variations and modifications thereof, which would occur to persons skilled in the art upon reading the foregoing description.