Description:

TECHNICAL FIELD
[0001] The present invention relates to an apparatus for fabrication of welded walls/panels made of tubes of various sizes and specifications for high temperature and high pressure applications. The invention also relates to an apparatus for doing the cutting punch of panel end tubes. More particularly, the invention relates to an apparatus which can enable the cutting punch on panel end tubes and making it easier and accurate cutting. This is considered as more accurate, safe and efficient with reduced manpower and cycle time for of water wall panels
BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention.
[0003] In power plants, the spiral and vertical panels / walls form the walls surrounding the furnace, where the fuel is burnt and the heat is transferred to the medium flowing inside the tubes. The furnace walls consist of setting of required number of panels as per drawing. The Length of the panels varies from 2 to 20 meters and the number of tubes per panel / wall varies from 22 tubes to 400 tubes with outside Diameter ranging from 38.1 mm to 76.1 mm.
[0004] These panels have to be cut accurately by oxy acetylene gas cutting and then chamfering afterwards. Before start of gas cutting marking has to be ensured by putting punch on each tube. Normally 3 punches have to be made with single punch tool at 3 locations over top of tubes. These punches should be made in same arc manually. Marking has to be done first with thread mixed with chalk dust. Afterwards center punch has to be done on all tubes followed by side punches on both sides of center punch at equal distance. This process is not only time taking but also accuracy is compromised in making all three punches in one arc.
[0005] If the punching is not proper cutting will be improper leading to reworks such as length shortage, repeated cutting in same tube and leading to more time and more man power, which is not desirable.
[0006] Hence there is a need to find out a safe and simple method for doing the punches on panels tubes which can guide gas cutter to cut the tubes accurately
OBJECTS OF THE DISCLOSURE
[0007] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed hereinbelow.
[0008] It is a general object of the present disclosure is to propose an apparatus that helps in reducing the time for punching on panel tubes for gas cutting.
[0009] It is another object of the present disclosure is to propose an apparatus that helps in reducing the time for punching on panel tubes for gas cutting.
[0010] It is another object of the present disclosure is to provide a safe and efficient method to carry out the work with good finish and reduced cycle time.
[0011] 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 form of the present invention is illustrated.
SUMMARY
[0012] This summary is provided to introduce concepts related to an apparatus for fabrication of welded walls / panels made of tubes of various sizes. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0013] In an embodiment, the present disclosure relates to an apparatus consist of one hollow tube acting as lifting handle. The lifting handle is fitted with one slotted plate. The slot in plate is made in arc shape to adjust the angle of the punches. There is one center punch and two side punches. One center bolt is fitted with slotted plate. Center punch is tightened in the center bolt to adjust the height of the same. Side punches are welded with threaded rods at back side to tightened the side punches with bolts at back side. By tightening and loosening the back side bolt the side punches angle and height can be adjusted for any diameter of tubes.
[0014] The apparatus is kept on the panel job. After that first of all center punch height is locked with center bolt in such a manner that pointed portion should touch the panel tubes, afterwards two side punches angle and height are adjusted in such a manner that pointed portion of punches should touch the top of tube. Once the apparatus is set, it can be hammered at top to get punch impression of three punches at the same time. These punches will guide the gas cutter to carry out the process accurately.
[0015] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
[0016] It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined to form a further embodiment of the disclosure.
[0017] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate exemplary embodiments and, together with the description, serve to explain the disclosed principles. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system and/or methods in accordance with embodiments of the present subject matter are now described, by way of example only, and with reference to the accompanying figures, in which:
[0019] FIG. 1 illustrates a front view of the Apparatus for doing three punches at the same time on panel tubes for gas cutting.
[0020] It should be appreciated by those skilled in the art that any block diagrams herein represent conceptual views of illustrative systems embodying the principles of the present subject matter.
DETAILED DESCRIPTION
[0021] The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such details as to clearly communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[0022] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.
[0023] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a",” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” “comprising,” “includes” and/or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
[0024] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
[0025] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0026] The present invention and the figure 1 relates to apparatus A that consists of one hollow tube like structure acting as lifting handle 1. The lifting handle 1 is fitted with one slotted plate 2. The slot in plate is made up of an arc shape to adjust the angle of the punches. There is one center punch 4 and two side punches 3 positioned adjacent to the centre punches such that the distance between the centre punch with either of the side punch is equal. One center bolt 5 is fitted at top of slotted plate 2. Center punch 4 is tightened in the center bolt 5 to adjust the height of the same. Side punches 3 are welded with threaded rods at back side to tighten the side punches with back-side bolts 7. By tightening and loosening the back-side bolt 7 the side punches 3 angle and height can be adjusted for any diameter of tubes.
[0027] The apparatus is kept on the panel job 6. After that first of all center punch 4 height is locked with center bolt 5 in such a manner that pointed portion should touch the panel tubes, afterwards two side punches 3 angle and height are adjusted in such a manner that pointed portion of punches should touch the top of tube. Once the apparatus is set, it can be hammered at top to get punch impression 8 of three punches at the same time. These punches will guide the gas cutter to carry out the process accurately.
[0028] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

Claims:We claim:
1. An apparatus (A) for carrying out precise punch cuttings on panel tubes, the apparatus comprising:
a hollow tube acting as lifting handle (1), and the lifting handle (1) is fitted with an arc shaped slotted plate (2)
wherein the apparatus has a center punch (4) and two side punches (3), positioned adjacent to the center punch (4);
a center bolt (5) configured at the top of slotted plate (2);
a center punch (4) is tightened in the center bolt (5) to adjust the height of the same;
a plurality of side punches (3), welded with threaded rods at the back portion to tighten the side punches with back-side bolts (7).
2. The apparatus (A) as claimed in claim 1, wherein by tightening and loosening the back-side bolt (7) the side punches (3) angle and height can be adjusted for any diameter of tubes.
3. The apparatus (A) as claimed in claim 1 is kept on the panel job (6), wherein after that first of all center punch (4) height is locked with center bolt (5) in such a manner that pointed portion should touch the panel tubes.
4. The apparatus (A) as claimed in claim 1, wherein, the two side punches (3), angle and height are adjusted in such a manner that pointed portion of punches should touch the top of tube.
5. The apparatus (A) as claimed in claim 1, wherein once the apparatus is set, it can be hammered at top to get punch impression (8) of three punches at the same time.
6. The apparatus (A) as claimed in claim 1 provides the flexibility of usage to a plurality of panel tubes.
7. The apparatus (A) as claimed in claim 1 provides the flexibility for any diameter and material of panel tubes.
8. The apparatus (A) as claimed in claim 1, wherein the apparatus provides the provision of usage in any position on panel tubes.
9. The apparatus (A) as claimed in claim 1, wherein the apparatus can be used for high temperature high pressure applications.