FIELD OF INVENTION

[001] The present invention relates to a tool for removal of burr from pipe and header. More particularly, this invention presents a tool for clearing any loose pieces available in holes of pipes or headers 5 after machining thereby avoiding the entrapment of loose pieces in narrow fluid paths in boiler.
BACKGROUND OF THE INVENTION 10
[002] The Header in a high temperature high pressure steam generator is a junction in which water or steam or mixture of water and steam is collected at one side and distributed at other side. 15 Normally the Header consists of a group of individual pipes. The group of individual pipes join together to form a header of desired length. Each header consists of a stub or nipple and nozzle. For the provision of stub, numerous holes are provided along the length of the header with different orientation and different sizes. All 20 markings of holes on header are carried out on individual pipes itself except the holes coming closer to the joints are left unmarked. Once marking is over, the header is offered for inspection. After inspection, the header is moved to drilling machine where the holes are drilled. After completion of drilling, the deburring of holes in an 25 individual pipe of a header ranging about length of 4-6 meter is done. The Individual pipes are fitted up for butt joint and welded. The radiography test is conducted on each butt joint. After the completion of all butt joints in a header, the balance holes near all joints are marked and drilled in drilling machine. 30
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[003] The holes which are drilled in a balance hole drilling contain burrs. The burrs are difficult to access and remove. There is no special tool for removal of burr which is available in the middle of the header. Further, the smaller sized holes are much difficult to 5 approach from the surface of the header.
[004] In view of the above, the present invention introduces a tool for removal of burr from pipe and header which can address the aforesaid issues and serve the purpose efficiently. 10
OBJECTS OF THE INVENTION
[005] The object of the present invention is to provide a tool for 15 removal of burr from pipe and header which obviates shortcomings of prior art(s).
[006] Another object of the present invention is to provide a tool for removal of burr from pipe and header which is simple in 20 construction.
[007] More particularly, it is an object of the invention to design a tool for removal of burr available in the hole of a header.
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[008] Still another object of the present invention is to design a tool for approaching burr available in a smaller sized hole of the header.
[009] Yet another object of the invention is to design a deburring tool for removal of burr available with high strength alloy materials. 30
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[010] Further object of the present invention is to provide a tool for removal of burr from pipe and header which is user friendly and efficient. 5
[011] These and other objects and advantages of the present invention will be apparent to those skilled in the art after a consideration of the following detailed description taken in conjunction with the accompanying drawings in which a preferred 10 form of the present invention is illustrated.
SUMMARY OF THE INVENTION
[012] The Header in a high temperature high pressure steam 15 generator is a junction in which water or steam or mixture of water and steam is collected at one side and distributed at other side. Any loose material in the header fluid Path affects performance. After machining of the header, the deburring is very important operation. Deburring of holes after full length formation of headers is very 20 difficult. The access to holes after header formation is difficult. To deburr the hole, the deburring tool was developed. With the help of insert) fitted at the top of the tool, the burr is removed. The string and thin T rod facilitate the travel inside the hole. Irrespective of any material, the tool can remove the burr completely. The quality 25 and performance of the finished product is ensured by the usage of the developed tool.
[013] Accordingly, there is provided a tool for removal of burr from pipe and header comprising a rod, tip of which is secured to an 30 insert, wherein a string is provided, one end of which is connected to the insert and other end is tied to the rod.
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[014] The rod is having substantially T-section.
[015] The rod is having a longitudinal member and a transverse member integrated to form a single structure, in which the 5 transverse member is held by hand for rotation of the longitudinal member inside pipe/header through hole(s) thereof by engaging the insert on the bottom surface of the header/pipe.
[016] The fastener includes a screw, which facilitates rotation of the 10 insert.
[017] The insert forms a leaf part having substantially rectilinear section.
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[018] The string constitutes a spring so as to provide spring back action, one end of which is in connection with the insert and other end is tied to the longitudinal member at a point adjacent to the tip of said rod.
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[019] The transverse member can be having substantially U-section.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
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[020] Further objects and advantages of this invention will be more apparent from the ensuing description when read in conjunction with the accompanying drawings of the exemplary embodiments and wherein:-
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Figure 1 illustrates the front view of the tool for removal of burr from pipe and header in one position according to present invention.
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Figure 2 illustrates the front view of the tool for removal of burr from pipe and header in different position in accordance with the invention. 5
DETAIL DESCRIPTION OF THE PRESENT INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS OF PREFERRED EMBODIMENTS
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[021] The present invention makes a disclosure regarding a technology pertaining to a tool for removal of burr from pipe and header. Reference may be made to figure 1. The tool (100) constituting assembly of parts including a rigid rod (101), an insert (102), fastener (103) and a spring (104) connected to each other and 15 working in a combination so as to serve the necessary purpose.
[022] The rigid rod (101) forms a single structure having substantially T-section as illustrated in the figure. Here, the rigid rod includes a longitudinal member (105) integrated to a transverse 20 member (106). The transverse member (106) can be having substantially U-section instead of being straight. Thus, any shape of the transverse member can be adopted which is convenient to use.
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[023] The rod is secured to said insert (102) at the end thereof by means of the fastener (103) including a screw. Thus, the insert is located at tip of the longitudinal member (105) of said rod (101) for free movement thereof according to requirement. Here, the fastener facilitates rotation of the insert. 30
[024] The transverse member (106) of the rod is implemented for holding by hand in order to remove burr from header/pipe.
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[025] The insert in the exemplary embodiment forms a leaf part (102) having substantially rectilinear section without restricting scope of the invention to the same. Thus, any profile of the insert readily apparent to a person skilled in the art are understood to be within purview of invention. 5
[026] In conjunction with the above, there is provision of a string (104) tied to the insert at one end and longitudinal member (105) of the rod (101) at other end as shown in the figure.
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[027] Here, the string provides spring back action so as to ensure engagement of the insert to the header or pipe. Thus, the string constituting a spring provides spring back action while engaging and retrieval of the tool from the pipe.
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[028] The longitudinal member (105) being straight middle portion ensures approach of the tool through hole of pipe/header without deviation, thereby serving the purpose efficiently.
[029] While using the tool, transverse member of the T-shaped rigid 20 rod is held by hand for rotation inside pipe/header through hole(s) thereof by engaging the insert on the bottom surface of the header/pipe. The insert is employed as a cutting edge for removal of burr from inside of the header/pipe.
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[030] The material of the tool can be carbon steel, stainless steel without limiting ambit of the present invention to the same. Thus, other materials readily apparent to a person skilled in the art are understood to be within purview of invention.
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[031] During operation of the tool by inserting inside the pipe/header, the insert takes various positions including the positions as best seen in fig. 1 and 2.
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[032] The afore discussed tool is particularly useful for deburring of holes having diameter more than (> 14 mm) in any pipe or header. Further, the tool is used for deburring any burr available inside header or pipe with all orientations.
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[033] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including 10 but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited 15 in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply 20 that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particulars claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” 25 (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such 30 recitation should typically be interpreted to mean at least the recited
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number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogues to “at least one of A, B and C, etc.” is used, in general such a construction is intended in the sense one having skill in the 5 art would understand the convention (e.g., “a system having at least one of A, B and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or 10 C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C 15 together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For 20 example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B”.
[034] It is to be noted that the present invention is susceptible to modifications, adaptations and changes by those skilled in the art. 25 Such variant embodiments employing the concepts and features of this invention are intended to be within the scope of the present invention, which is further set forth under the following claims:-

WE CLAIM:-

1. A tool for removal of burr from pipe and header comprising a rod (101), tip of which is secured to an insert (102), wherein a string (104) is provided, one end of which is connected to 5 the insert (102) and other end is tied to the rod (101).
2. The tool for removal of burr from pipe and header as claimed in claim 1, wherein the rod (101) is having substantially T-section. 10
3. The tool for removal of burr from pipe and header as claimed in claim 1 or 2, wherein the rod (101) is having a longitudinal member (105) and a transverse member (106) integrated to form a single structure, in which the transverse member (106) 15 is held by hand for rotation of the longitudinal member inside pipe/header through hole(s) thereof by engaging the insert on the bottom surface of the header/pipe.
4. The tool for removal of burr from pipe and header as claimed 20 in any of the preceding claims, wherein the fastener includes a screw, which facilitates rotation of the insert.
5. The tool for removal of burr from pipe and header as claimed in any of the preceding claims, wherein the insert forms a leaf 25 part (102) having substantially rectilinear section.
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6. The tool for removal of burr from pipe and header as claimed 5 in any of the preceding claims, wherein the string (104) constitutes a spring so as to provide spring back action, one end of which is in connection with the insert and other end is tied to the longitudinal member (105) at a point adjacent to the tip of said rod. 10
7. The tool for removal of burr from pipe and header as claimed in any of the preceding claims, wherein the transverse member (106) can be having substantially U-section.