Claims:We claim:
1. A rectangular apparatus (100) for doing weld pad marking on a panel tube (109), the apparatus comprises of:
at least a long plate (101) acting as a longer side of a rectangle;
at least a medium plate (102) acting as a width of the rectangle;
at least a center plate (103) acting as a center line of the rectangle;
at least a protractor (104) attached to the center plate (103) with a one hinge support (105);
wherein the long plate (101) is connected to the medium plate (102) and the center plate (103) by means of at least a top clip (106) and a bottom clip (107);
wherein the long plate (101), the medium plate (102) and the center plate (103) are connected to each other in such a way that the one plate slide over other to increase or decrease the dimensions of rectangle; and
wherein base of the protractor (104) is kept in parallel with the axis of the panel tube (109) and the center of the hinge support (105) is adjusted to match with the center of the rectangular apparatus (100).
2. The rectangular apparatus (100) as claimed in claim 1, wherein the dimensions of the rectangle is adjusted with the help of a measuring tape (110) pasted on the long plate (101), the medium plate (102) and the center plate (103).
3. The rectangular apparatus (100) as claimed in any of the claim 1 or 2, wherein the top clip (106) has at least a threaded hole to lock the plates with at least a locking nut (108).
4. The rectangular apparatus (100) as claimed in claim 1, wherein base of the protractor (104) is kept in parallel with axis of the panel tube (109) and the hinge support (105) of the protractor (104).
5. The rectangular apparatus (100) as claimed in claim 1, wherein the center plate (103) is adjusted to match with a predetermined angle in the protractor (104) and locked with at least a locking nut (108).
6. The rectangular apparatus (100) as claimed in claim 6, wherein the predetermined angle ranges from 15 deg. to 20 deg. on the protractor (104).
7. The rectangular apparatus (100) as claimed in claim 1, wherein at least the long plate (101) and the medium plate (102) are two in number.
8. The rectangular apparatus (100) as claimed in claim 1, wherein at least the center plate (103) is one in number.
9. The rectangular apparatus (100) as claimed in claim 1, wherein at least the top clip (106) and at least the bottom clip (107) are six in number.
, Description:AN APPARATUS FOR WELD PAD MARKING
TECHNICAL FIELD
[0001] The present disclosure, in general, relates to welding technology. In particular the present invention relates to an apparatus for performing weld pad marking on a panel tube.
BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[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 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] After fabrication, these panels are arranged in trial assembly bed. These panels have weld pads at certain locations as per drawing which need to be marked, tacked and welded accurately on the panel tubes. Weld pads are plates of thickness 6mm and width of 25mm. Length varies as per the user’s requirement. Weld pads are always in rectangular shape. Center line of weld pad is at angle of 20 degree with respect to panel tubes. So, in a panel whole weld pad is inclined at 20 degree. This makes the marking complex.
[0005] At some locations same weld pad fall on two panels next to each other, which makes the marking even more complex. Dimension of center point of weld pad is given from one end of panel. From that point center line at 20 degree has to be marked, then 4 points of rectangle has to be marked with reference to center line. After joining the points, full weld pad marking is achieved. Afterwards half weld pad are marked on each side followed by tacking and full welding.
[0006] Technical problem: This process is not only time taking but the accuracy is compromised. If the marking is not proper it will result into reworks at final stage leading to more time and more man power and cost inducing, which is not desirable.
[0007] Technical solution: Accordingly, there is a need to develop an apparatus for doing the marking of weld pad on panel tubes accurately.
OBJECTS OF THE DISCLOSURE
[0008] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed hereinbelow.
[0009] It is a general object of the present disclosure to reduce the time for marking of weld pads on panel tubes with high accuracy.
[0010] It is another object of the present disclosure to provide an apparatus that can carry out the work with good finish and reduced cycle time.
[0011] It is another object of the present disclosure to utilize the present disclosure not only for panel tube but also for plates, pipe, etc.
[0012] 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
[0013] This summary is provided to introduce concepts related to marking of weld pad on tubes in water wall panels. 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.
[0014] In an embodiment, the present disclosure relates to a rectangular apparatus for doing weld pad marking on a panel made of tubes, the apparatus comprises of at least a long plate acting as a longer side of the rectangle, at least a medium plate acting as width of the rectangle, at least a center plate acting as a center line of the rectangle, at least a protractor attached to the center plate with one hinge support, wherein the long plate is connected to the medium plate and the center plate using at least a top clip and a bottom clip, wherein the long plate, the medium plate and the center plate are connected to each other in such a way that the plates slide over each other to increase or decrease the dimensions of rectangle. The protractor is kept in parallel with the axis of the panel tube and the center of the hinge support is adjusted to match with the center of the rectangular apparatus.
[0015] In an aspect, the dimensions of rectangle is adjusted with the help of a measuring tape pasted on the long plate, the medium plate and the center plate.
[0016] In an aspect, the top clip has at least a threaded hole to lock the plates with at least a locking nut.
[0017] In an aspect, the base of the protractor is kept in parallel with axis of the tubes and a hinge support of the protractor.
[0018] In an aspect, the center plate is adjusted to match with the predetermined angle in the protractor and locked with at least a locking nut.
[0019] In an aspect, the predetermined angle ranges from 15 deg. to 20 deg. on the protractor.
[0020] In an aspect, the long plate and the medium plate are two in number.
[0021] In an aspect, the center plate is one in number.
[0022] In an aspect, at least the top clip and at least the bottom clip are six in number.
[0023] 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.
[0024] 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.
[0025] 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
[0026] 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:
[0027] FIG.1 illustrates an isometric view of the apparatus for doing weld pad marking on wall panel.
[0028] FIG. 2 illustrates a detailed view of the apparatus for doing weld pad marking on wall panel.
[0029] 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
[0030] 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.
[0031] 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.
[0032] 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.
[0033] 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.
[0034] 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.
[0035] Referring to fig.1, the rectangular apparatus (100) comprises of at least two long plates (101) acting as longer side of rectangle. At least two medium plates (102) act as width of rectangle and there is one center plate (103) which act as center line of rectangle. All the plates are pasted with measuring tape (110) to adjust the dimension of rectangle.
[0036] Referring to fig. 1 and fig. 2, the long plates (101) and the medium plates (102) are connected to each other with four set of clips at each end where the long plate (101) is joined to the medium plate (102). At least a top clip (106) and at least a bottom clip (107) is connected with each other and passing through the long plate (101) and the medium plate (102) in such a manner that the long plate (101) and the medium plate (102) slide over each other to increase or decrease the dimensions of rectangle. There top clip (106) and the bottom clip (107) are in total six in number. Similarly, the center plate (103) is also connected with long plates (101) with two set of at least a top clip (106) and at least a bottom clip (107) for moving the center plate (103).
[0037] The protractor (104) fitted with center plate (103) with one hinge support (105) to adjust the base of protractor (104). The top clip (106) has a threaded hole to lock the plates with at least a locking nut (108). There are six locking nuts (108) provided for locking the dimension inside the six threaded holes.
[0038] The apparatus (100) is kept on the panel (109). First of all the base of the protractor (104) is kept in parallel with tube axis and hinge support (105) of protractor (104) will be kept at center point of the rectangular apparatus (100). Once the protractor (104) base matched with the panel (109) axis and the center of hinge support (105) is matched with the center of the rectangular apparatus (100), the center plate (103) is adjusted to match with the predetermined angle in the protractor (104) and locked with the locking nuts (108).
[0039] Once the center plate (103) is fixed, the medium plates (102) is kept parallel with center plate (103) and moved along long plates (101) to set the length of rectangular apparatus (100) with the help of the measuring tape (110) pasted over the plates (101) (102) (103). Similarly, the long plates (101) move over medium plates (102) to set the width of the rectangular apparatus (100). The weld pad center is the midpoint of the rectangular shape from the center of the panel tube of the rectangular apparatus (100). After that all the plates (101) (102) (103) are locked with locking nuts (108). Afterwards all the four corners and top and bottom points at center plate (103) are punched.
[0040] Finally, the apparatus (100) is removed and all the four points are connected to form rectangular area of the rectangular apparatus (100) and two points at center form the center line of the rectangular apparatus (100). Within the marking, plates are tacked and welded to get the completed the rectangular apparatus (100). The angle of the weld pad marking on the rectangular apparatus (100) center line is adjusted to match with the predetermined angle which ranges from 15 degree to 20 degree. After completing the weld pad marking on the apparatus (100), the apparatus (100) is moved to another panel (109) to repeat the process.
[0041] 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.