CN113369821A - Ceiling-circle-and-square-place construction process for waste heat recovery ventilation pipeline - Google Patents
Ceiling-circle-and-square-place construction process for waste heat recovery ventilation pipeline Download PDFInfo
- Publication number
- CN113369821A CN113369821A CN202110719552.8A CN202110719552A CN113369821A CN 113369821 A CN113369821 A CN 113369821A CN 202110719552 A CN202110719552 A CN 202110719552A CN 113369821 A CN113369821 A CN 113369821A
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- Prior art keywords
- plate
- shaped
- heat recovery
- waste heat
- construction process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
- F16L23/026—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes by welding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/12—Flanged joints specially adapted for particular pipes
Abstract
The invention relates to the technical field of pipeline processing application, in particular to a ceiling and ceiling construction process for a waste heat recovery ventilation pipeline. The method comprises the following effective steps: a. cutting the plate; b. bending the arc-shaped sample plate; c. constructing an assembly platform; d. assembling and supporting a ground flange; e. welding the triangular plate; f. the arrangement of an internal support; g. installing an arc-shaped template; h. integral welding; i. and (5) finishing. The invention effectively realizes the stable support of the processing process of the large-diameter hemispherical square pipe fitting by improving the existing construction process and matching with the unique support tool, and meanwhile, the arrangement of the support tool is matched, so that the construction efficiency is improved, and the technical problem of the existing large-diameter hemispherical square pipe fitting construction is further solved.
Description
Technical Field
The invention relates to the technical field of pipeline processing application, in particular to a ceiling and ceiling construction process for a waste heat recovery ventilation pipeline.
Background
The ventilation pipeline is a metal or composite pipeline for ventilation and air conditioning engineering of industrial and civil buildings, and is a municipal infrastructure for circulating air and reducing the concentration of harmful gases. The air ducts are generally classified by shape: circular, rectangular, serpentine and the like, and the main parts comprise a straight pipe, a bent pipe, a sky circle and the like.
The top round place is a pipe fitting with a round upper opening and a round lower opening, and is a main part which is widely applied to transition of a rectangular air channel and a round air channel in a ventilation and air supply system. The manufacturing method is generally divided into eight blocks, namely four arc plates and four triangular plates, and then the eight blocks are manufactured by bending and splicing the four arc plates and the four triangular plates through a press machine. But in the waste heat recovery air pipe of large cross-section, because the volume of tubular product is great, in welding process, the scheduling problem appears in the deformation very easily, leads to later stage pipe fitting assembly welding to go wrong, because the particularity of the local pipe fitting of sky circle, the problem of deformation appears more easily in it, for this reason, how effective, simple, swift manufacturing major diameter local pipe fitting of sky circle is the technical problem who remains to be solved.
Disclosure of Invention
Aiming at the technical problems existing in manufacturing of the hemispherical dome pipe fitting, the invention provides the hemispherical dome construction process for the waste heat recovery ventilation pipeline, which has the advantages of reasonable design, simple structure, convenient processing and capability of effectively, simply and quickly manufacturing the hemispherical dome pipe fitting with large diameter.
In order to achieve the purpose, the invention adopts the technical scheme that the invention provides a skyline and square construction process for a waste heat recovery ventilation pipeline, which comprises the following effective steps:
a. firstly, cutting four fan-shaped plate parts and four triangular plate parts according to the requirements of a drawing for later use;
b. bending the four cut fan-shaped plates into arc-shaped sample plates for later use;
c. constructing an assembly platform, wherein the platform is arranged in a frame shape, two steel plates which are arranged at intervals are laid on the top of the assembly platform, the distance between the steel plates is 500mm, and the height of the assembly platform is 1000 mm;
d. assembling a bottom ground flange, arranging a grid support in the ground flange, arranging a center rod in the center of the grid support, and coaxially arranging the center line of a local flange and the center line of the steel plate interval when assembling the ground flange;
e. spot welding the triangular plate on the assembled ground flange;
f. after the triangular plate is spot-welded, sleeving a rice-shaped support frame in the central rod, and welding the rice-shaped support frame on the central rod at intervals;
g. after the welding of the support frame shaped like a Chinese character 'mi' is finished, assembling an arc-shaped template between adjacent triangular plate parts;
h. after the arc-shaped sample plate is assembled, adjusting an interface and welding;
i. and after the welding is finished, assembling the top dome flange, and after the assembly is finished, obtaining the dome square pipe fitting for the waste heat recovery ventilation pipeline.
Preferably, in the step a, firstly, a fan-shaped plate is cut on a steel plate by taking the long side as the arc side of the fan-shaped plate and the central line of the arc side as the height of the fan-shaped plate, and the bevel edge of the arc-shaped plate remainder cut from the steel plate is taken as the bevel edge of the triangular plate to be spliced and welded into the triangular plate.
Preferably, in the step b, the sector plate is bent with a bending point of 200mm to 30 mm.
Preferably, in the step e, after the triangular plate is subjected to spot welding, the support steel is welded on the outer surface of the triangular plate, and the support steel is arranged in parallel with the ground flange.
Preferably, the support steels are spaced up and down on the triangular plate.
Preferably, the support frame shaped like a Chinese character 'mi' comprises an octagonal middle plate and support rods arranged on the middle plate and distributed in a shape like a Chinese character 'mi', and a central hole is formed in the middle plate.
Preferably, one end of the support rod close to the middle plate is provided with a slot, and the support rod is inserted into the middle plate through the slot.
Compared with the prior art, the invention has the advantages and positive effects that,
1. the invention provides a ceiling round and square construction process for a waste heat recovery ventilating duct, which effectively realizes the support of the stability of the processing process of a large-diameter ceiling round and square pipe fitting by improving the existing construction process and matching with a unique support tool, and simultaneously improves the construction efficiency by matching with the arrangement of the support tool, thereby solving the technical problems in the construction of the existing large-diameter ceiling round and square pipe fitting.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a construction state at step d provided in example 1;
FIG. 2 is a schematic structural diagram of a construction state at step e provided in example 1;
FIG. 3 is a schematic structural view of a construction state at step f provided in example 1;
FIG. 4 is a schematic structural view of a finished product state provided in example 1;
fig. 5 is a schematic structural view of the support frame shaped like a Chinese character mi provided in embodiment 1;
in the above figures, 1, a grid support; 11. a center pole; 2. a ground flange; 3. a triangular plate member; 31. supporting steel; 4. a support frame shaped like a Chinese character 'mi'; 41. a middle plate; 411. a central bore; 42. a support bar; 421. a slot; 5. an arc template; 6. a dome flange.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
a. cutting the plate: like the conventional construction process, in this embodiment, it is also necessary to cut out four fan-shaped plates and four triangular plates 3 according to the drawing requirements for standby application, because the size of the square provided by this embodiment is large, therefore, the cutting method of unfolding the whole square of the square to form the unfolded drawing is not required, because there is no steel plate with such a large size, for this reason, in this embodiment, the fan-shaped plates are cut out by using the long edge as the arc edge of the fan-shaped plate and the central line of the arc edge as the height of the fan-shaped plate, because the length of the long edge of the fan-shaped plate is the same as the length of the side edge of the triangular plate 3, the bevel edge of the arc-shaped plate remainder cut out from the steel plate is assembled and welded into the triangular plate 3 as the bevel edge of the triangular plate 3, thus, two bevel edges of the remainder are used as the bevel edge of the triangular plate 3, and then the middle missing piece is supplemented, set up like this, can effectively practice thrift the use amount of steel sheet and 3 effect flat plate spares of triangle plate and use, it adopts welded mode to constitute whole plate, does not influence its intensity, and fan-shaped plate uses as the arc, and it need keep the wholeness, just is favorable to the maintenance of its intensity.
b. Bend arc model 5, bend four fan-shaped plate that will cut out and be arc model 5, reserve, in order to guarantee the smoothness of 5 radians of arc model, use 200mm ~ 30mm as a bending point fan-shaped plate of bending to ensure the smoothness of arc model 5.
c. The utility model discloses a structure assembly platform, for convenient construction, need the component platform, consider that whole work progress needs to weld in inside, and enter into inside from the top, be less than entering into inside from the below, for this reason, the platform is the frame type setting, lays the steel sheet that two intervals set up at its top, and the steel sheet is used for realizing the support, and two steel sheet intervals are at 500mm for form the population, make things convenient for the staff to get into, and the platform height is at 1000mm, also for the staff's entering.
d. The assembly and the support of the ground flange 2 are realized, because the caliber of the whole square pipe fitting of the sky circle is overlarge, therefore, the ground flange 2 also needs to be welded, in this way, the ground flange 2 is formed by welding four steel materials, in the welding process, in order to ensure the welding stability, an inclined strut is adopted for supporting, after the assembly of the ground flange 2 is completed, a grid support 1 is arranged in the ground flange 2, a central rod 11 is arranged at the center of the grid support 1, the grid support 1 is a grid-shaped structure consisting of a cross rod and a longitudinal rod, a connecting plate is arranged in the middle of the ground flange and used for fixing the central rod 11, and the central line of the ground flange and the central line of the steel plate interval are coaxially arranged when the ground flange 2 is assembled, so that the center symmetry is facilitated, and if the entering of workers is influenced, the proper adjustment can be carried out.
e. The triangular plate 3 is welded, the triangular plate 3 is spot-welded on the assembled ground flange 2, the purpose of spot welding is convenient to adjust, the triangular plate 3 only needs to be welded on the ground flange 2 at the bottom edge, so that the step is not described much, meanwhile, the triangular plate 3 is large in amplitude, the thickness of the triangular plate 3 is limited and is generally 3mm, in order to avoid deformation, after the spot welding of the triangular plate 3 is completed, the supporting steel 31 is additionally welded on the outer surface of the triangular plate 3, the supporting steel 31 is square steel, and the supporting steel 31 is arranged in parallel with the ground flange 2. The support steels 31 are arranged at intervals on the triangular plate 3, so that the stability of the triangular plate 3 is achieved by the support steels 31.
f. The setting of inside support, treat that 3 spot welding of triangular plate accomplish the back, at 11 endotheca rice style of calligraphy support frames 4 of well core rod, 4 interval welding of rice style of calligraphy support frames are on well core rod 11, and in this embodiment, rice style of calligraphy support frames 4 are provided with centre bore 411 including being the intermediate lamella 41 that the octagon set up and setting bracing piece 42 that is rice style of calligraphy and distributes on intermediate lamella 41. Because that three plate enclose becomes a square, for this reason, the cross nature just in time corresponds four set squares in the support frame of rice style of calligraphy, and the hypotenuse of rice style of calligraphy then corresponds arc plate to the realization is to the effectual support of each plate, and simultaneously, rice style of calligraphy bracing piece 42 also forms a plurality of triangular structure, ensures the intensity and the stability of support.
Considering the caliber change of the pipe fitting in the round sky, in this embodiment, the slot 421 is disposed at one end of the support rod 42 close to the middle plate 41, and the support rod 42 is inserted into the middle plate 41 through the slot 421, because the depth of the slot 421 is large, the support rod 42 can be adjusted, and after the length is adjusted to a proper value, the support rod 42 and the central plate are directly welded together.
g. And the arc-shaped sample plates 5 are installed, after the welding of the rice-shaped support frames 4 is completed, the arc-shaped sample plates 5 are assembled between the adjacent triangular plate parts 3, and the assembling also adopts a spot welding mode.
h. And (4) integrally welding, and adjusting the interface after the arc-shaped sample plates 5 are assembled, so that the plates can be completely welded after the positions are accurate.
i. And (3) assembling a top dome flange 6 after finishing welding of the finished product, and obtaining the dome square pipe fitting for the waste heat recovery ventilation pipeline after finishing assembling. And then, after the supporting piece is detached, carrying out rust prevention treatment.
Through foretell setting, utilize the cooperation of various frocks, effectual realized the quick construction to the square pipe fitting of heavy-calibre sky circle, simultaneously, ensure that it does not take place to warp, provide the guarantee for the quick construction of engineering.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (7)
1. A skyline and square construction process for a waste heat recovery ventilation pipeline is characterized by comprising the following effective steps:
a. firstly, cutting four fan-shaped plate parts and four triangular plate parts according to the requirements of a drawing for later use;
b. bending the four cut fan-shaped plates into arc-shaped sample plates for later use;
c. constructing an assembly platform, wherein the platform is arranged in a frame shape, two steel plates which are arranged at intervals are laid on the top of the assembly platform, the distance between the steel plates is 500mm, and the height of the assembly platform is 1000 mm;
d. assembling a bottom ground flange, arranging a grid support in the ground flange, arranging a center rod in the center of the grid support, and coaxially arranging the center line of a local flange and the center line of the steel plate interval when assembling the ground flange;
e. spot welding the triangular plate on the assembled ground flange;
f. after the triangular plate is spot-welded, sleeving a rice-shaped support frame in the central rod, and welding the rice-shaped support frame on the central rod at intervals;
g. after the welding of the support frame shaped like a Chinese character 'mi' is finished, assembling an arc-shaped template between adjacent triangular plate parts;
h. after the arc-shaped sample plate is assembled, adjusting an interface and welding;
i. and after the welding is finished, assembling the top dome flange, and after the assembly is finished, obtaining the dome square pipe fitting for the waste heat recovery ventilation pipeline.
2. The heat recovery ventilation duct ceiling and floor construction process according to claim 1, wherein in the step a, firstly, a fan-shaped plate is cut on the steel plate by taking the long edge as the arc edge of the fan-shaped plate and the central line of the arc edge as the height of the fan-shaped plate, and the bevel edge of the arc-shaped plate remainder cut from the steel plate is used as the bevel edge of the triangular plate to be assembled and welded into the triangular plate.
3. The skyline construction process for the waste heat recovery ventilation duct according to claim 2, wherein in the step b, the fan-shaped plate is bent by taking 200 mm-30 mm as a bending point.
4. The skyline construction process for the waste heat recovery ventilation pipeline according to claim 3, wherein in the step e, after the triangular plate is subjected to spot welding, support steel is additionally welded on the outer surface of the triangular plate, and the support steel is arranged in parallel with the flange.
5. The skyline construction process for the waste heat recovery ventilation pipeline according to claim 4, wherein the supporting steel is arranged on the triangular plate at intervals up and down.
6. The skyline and square construction process for the waste heat recovery ventilation duct according to claim 5, wherein the support frame shaped like a Chinese character mi comprises an octagonal middle plate and support rods arranged on the middle plate and distributed like a Chinese character mi, and a central hole is formed in the middle plate.
7. The skyline construction process for the waste heat recovery ventilation duct according to claim 6, wherein a slot is formed in one end of the supporting rod close to the middle plate, and the supporting rod is inserted into the middle plate through the slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110719552.8A CN113369821B (en) | 2021-06-28 | 2021-06-28 | Ceiling-circle-and-square-place construction process for waste heat recovery ventilation pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110719552.8A CN113369821B (en) | 2021-06-28 | 2021-06-28 | Ceiling-circle-and-square-place construction process for waste heat recovery ventilation pipeline |
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| CN113369821A true CN113369821A (en) | 2021-09-10 |
| CN113369821B CN113369821B (en) | 2022-09-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700398A (en) * | 2022-03-04 | 2022-07-05 | 中国一冶集团有限公司 | Manufacturing method of large-size square-round reducer pipe |
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| CN109513830A (en) * | 2018-11-30 | 2019-03-26 | 白银有色集团股份有限公司 | The model of solid-drawn hemispherical dome and its method for drawing hemispherical dome |
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2021
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| US20020017789A1 (en) * | 1999-06-16 | 2002-02-14 | Holmes William W. | Gland pipe fitting |
| CN101101189A (en) * | 2006-07-04 | 2008-01-09 | 顾安生 | High-temperature heat-exchanging device |
| CN101725613A (en) * | 2008-10-20 | 2010-06-09 | 形状连接技术有限公司及两合公司 | Component assembly composed of fastening piece and sheet metal part and manufacturing method thereof |
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| CN114700398A (en) * | 2022-03-04 | 2022-07-05 | 中国一冶集团有限公司 | Manufacturing method of large-size square-round reducer pipe |
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