CN109140044B - Construction method of four-way ventilation air cooling pipeline - Google Patents
Construction method of four-way ventilation air cooling pipeline Download PDFInfo
- Publication number
- CN109140044B CN109140044B CN201810887417.2A CN201810887417A CN109140044B CN 109140044 B CN109140044 B CN 109140044B CN 201810887417 A CN201810887417 A CN 201810887417A CN 109140044 B CN109140044 B CN 109140044B
- Authority
- CN
- China
- Prior art keywords
- point
- pipe fitting
- theodolite
- branch pipe
- main pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/0243—Laying or reclaiming pipes on land, e.g. above the ground above ground
-
- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
- F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes in the ground
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a construction method of a four-way ventilation air-cooling pipeline, which comprises the following steps: s1Accurate constructionPreparing: preparing a construction tool, an open horizontal field, and two main pipe fittings and two branch pipe fittings which are qualified after acceptance; s2And paving a ground sample: laying a designed ground sample on an open horizontal field; s3And defining the positions of the main pipe and the branch pipe on the ground sample: confirming the intersection point, the size point and the theodolite placement point of the axes of each main branch pipe and each branch pipe; s4Assembling the pipe fittings, namely assembling the pipe fittings at each position point; s5The pipe fitting mapping ensures the length size of the pipe fitting, the perpendicularity of the flange end face and the confirmation of the angle of the branch pipe; s6, fixing the pipe fitting: the invention can reduce the construction period, improve the construction quality and ensure the connection coaxiality of the pipe fittings by welding and fixing the main pipe fittings and the branch pipe fittings according to the welding seams.
Description
Technical Field
The invention relates to the technical field of air cooling vent pipeline processing, in particular to a construction method of a four-way vent air cooling pipeline.
Background
The construction of the traditional power plant must have two conditions of rich resources of fuel and water, but in fact, areas with rich fuel resources do not necessarily have rich water resources, so that the rapid growth of the power industry and the shortage of fresh water resources become irreducible contradictions in the economic development of China, and air cooling can solve one of the limited measures of the contradictions in the development of power generation.
In the construction process of the air-cooling vent pipeline system pipeline, multi-way air-cooling vent pipelines such as three-way air-cooling pipelines or four-way air-cooling pipelines which are divided into two or three are derived due to the conversion and branching requirements, and the air-cooling pipelines are formed by welding a huge main pipe and branch pipes.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a construction method of a four-way air cooling pipeline, which can reduce the construction period, improve the construction quality and ensure the coaxiality.
In order to achieve the purpose, the invention adopts the following technical scheme:
a construction method of a four-way ventilation air-cooling pipeline comprises the following steps:
S1and construction preparation: preparing a construction tool, an open horizontal field, and two main pipe fittings and two branch pipe fittings which are qualified after acceptance;
S2and paving a ground sample: laying a designed ground sample on an open horizontal field;
S3and defining the positions of the main pipe and the branch pipe on the ground sample: firstly, confirming the intersection point 0 of the axes of each main pipe fitting and each branch pipe fitting, secondly confirming that the size point of each main pipe fitting and each branch pipe fitting is A, B, C, C ', which are respectively the intersection points of the axes and the central extension lines of the flange surfaces, and finally confirming that the theodolite placement point is D, E, F, F', which is the extension point on the extension lines of the size points;
s4, assembling pipe fittings: firstly, two lines are pulled on the flange end surface of a main pipe fitting for fixing, a reference circle 0 'is drawn by a scriber with the intersection point as the center of a circle to facilitate the leveling of branch pipes, and then the main pipe fitting and the branch pipe fitting are assembled according to the intersection point 0 and the size point A, B, C, C' on a ground sample;
s5, surveying and mapping pipe fittings: the method comprises the steps of surveying and mapping the length dimension of a pipe fitting and the perpendicularity of a flange end face, placing a theodolite at a theodolite placing point, respectively measuring and adjusting a flange at multiple points on the flange end face by using a steel ruler until the numerical values of the multiple points are equal to ensure the length dimension of the pipe fitting and the perpendicularity of the flange end face, surveying and mapping the angle of a branch pipe, placing the theodolite on the axis of a main pipe fitting, taking the point E as a reference point, adjusting the angle scale of the theodolite to 0 degree, rotating the theodolite to enable the reading of the angle scale to be 40 ℃ and 320 ℃ (-40 ℃), and confirming the coincidence degree of a cross line and the axis;
s6, fixing the pipe fitting: and welding and fixing according to the welding seams between the main pipe and the branch pipe.
Preferably, the distance between the theodolite placement point and the size point is 500mm or 1000mm or 1500 mm.
Preferably, the reference circle 0' drawn by the scriber has a diameter of 500mm to 1850 mm.
Preferably, the length of the open horizontal field is more than or equal to 10m, and the width of the open horizontal field is more than or equal to 8 m.
Preferably, the theodolite placement points D, E, F, F 'are in one-to-one correspondence with A, B, C, C'.
The invention has the beneficial effects that:
1. because the middle of the flange is hollow and the flange can deform after being spliced and welded, the center of the four flange surfaces can be ensured to be positioned on the same horizontal plane and the leveling among the branch pipes can be conveniently realized by using the scriber circle as a reference circle O' on the end surface of the flange;
2. the length dimension of the branch pipe and the perpendicularity of the flange end faces are ensured by measuring and verifying the perpendicularity and the length of the flange end faces of the pipes, the position relation of the branch pipe is ensured by verifying the angle of the branch pipe, errors are greatly avoided, the coaxiality is high, and the straightness of the straight pipe connected in the later period is ensured.
3. The construction method of the invention can greatly reduce the construction period and improve the construction quality of the four-way air-cooled ventilation pipeline.
Drawings
FIG. 1 is a schematic structural view of a four-way air-cooled ventilation duct according to the present invention;
FIG. 2 is a schematic structural view of a soil sample of the present invention;
FIG. 3 is a schematic view of the weld seam of the present invention in a front view;
FIG. 4 is a schematic cross-sectional view of a weld of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a construction method of a four-way ventilation air-cooling pipeline comprises the following steps:
S1and construction preparation: preparing a construction tool, an open horizontal field, and two main pipe fittings 1 and two branch pipe fittings 2 which are qualified after acceptance;
S2paving a ground sample 3: laying a designed ground sample 3 on an open horizontal field;
S3and defining the positions of the main pipe and the branch pipe on the ground sample: first, the intersection 0 of the axes of the main and branch pipes is identifiedSecondly, confirming that the size point of each main branch pipe and each branch pipe is A, B, C, C ', which are respectively the intersection points of the shaft axis and the center extension line of the flange surface, and finally confirming that the theodolite placing point is D, E, F, F', which is an extension point on the extension line of the size point;
s4, assembling pipe fittings: firstly, two lines are pulled on the flange end surface of a main pipe fitting for fixing, a reference circle 0 'is drawn by a scriber with the intersection point as the center of a circle to facilitate the leveling of branch pipes, and then the main pipe fitting and the branch pipe fitting are assembled according to the intersection point 0 and the size point A, B, C, C' on a ground sample;
s5, surveying and mapping pipe fittings: the method comprises the steps of ensuring the length size of a pipe fitting and the perpendicularity of a flange end face 4, placing a theodolite at a theodolite placing point, respectively measuring and adjusting the flange at multiple points on the flange end face 4 by using a steel ruler until the numerical values of the multiple points are equal to ensure the length size of the pipe fitting and the perpendicularity of the flange end face, and also comprises the step of surveying and mapping of a branch pipe angle, placing the theodolite on the axis of a main pipe fitting, taking the point E as a reference point, adjusting the angle scale of the theodolite to 0 ℃, rotating the theodolite to enable the reading of the angle scale to be 40 ℃ and 320 ℃ (-40 ℃), and confirming the coincidence degree of a cross line;
s6, fixing the pipe fitting: and welding and fixing are carried out according to the welding seams 5 between the main pipe and the branch pipe.
Preferably, the distance between the theodolite placement point and the size point is 500mm or 1000mm or 1500 mm.
The diameter of a reference circle 0 'drawn by a scriber is 500-1850 mm, which can ensure that the centers of four flange surfaces are positioned on the same horizontal plane and facilitate the leveling among the branch pipes 2, and the size of the reasonable range of the reference circle 0' further facilitates the leveling of two branch pipes 2.
The length of the open horizontal field is more than or equal to 10m, the width of the open horizontal field is more than or equal to 8m, and the larger the open horizontal field is, the more convenient the leveling assembly among the main pipe fittings and the laying of the ground sample are facilitated.
Theodolite placement points D, E, F, F 'respectively with A, B, C, C' one-to-one, correspond respectively and set up the survey and drawing of the straightness that hangs down of length dimension and flange terminal surface 4 of making things convenient for each pipe fitting of theodolite, avoid obscuring.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A construction method of a four-way ventilation air-cooling pipeline is characterized by comprising the following steps: the construction method comprises the following steps:
S1and construction preparation: preparing a construction tool, an open horizontal field, and two main pipe fittings and two branch pipe fittings which are qualified after acceptance;
S2and paving a ground sample: laying a designed ground sample on an open horizontal field;
s3, defining the positions of the main pipe and the branch pipe on the ground sample: firstly, confirming the intersection point 0 of the axes of each main pipe fitting and each branch pipe fitting, secondly confirming that the size point of each main pipe fitting and each branch pipe fitting is A, B, C, C ', which are respectively the intersection points of the axes and the central extension lines of the flange surfaces, and finally confirming that the theodolite placement point is D, E, F, F', which is the extension point on the extension lines of the size points;
s4, assembling pipe fittings: firstly, two lines are pulled on the flange end surface of a main pipe fitting for fixing, a reference circle 0 'is drawn by a scriber with the intersection point as the center of a circle to facilitate the leveling of branch pipes, and then the main pipe fitting and the branch pipe fitting are assembled according to the intersection point 0 and the size point A, B, C, C' on a ground sample;
s5, surveying and mapping pipe fittings: the method comprises the steps of surveying and mapping the length dimension of a pipe fitting and the perpendicularity of a flange end face, placing a theodolite at a theodolite placing point, respectively measuring and adjusting a flange at multiple points on the flange end face by using a steel ruler until the numerical values of the multiple points are equal to ensure the length dimension of the pipe fitting and the perpendicularity of the flange end face, surveying and mapping the angle of a branch pipe, placing the theodolite on the axis of a main pipe fitting, taking the point E as a reference point, adjusting the angle scale of the theodolite to 0 degree, rotating the theodolite to enable the reading of the angle scale to be 40 ℃ and 320 ℃ (-40 ℃), and confirming the coincidence degree of a cross line and the axis;
s6, fixing the pipe fitting: and welding and fixing according to the welding seams between the main pipe and the branch pipe.
2. The construction method of the four-way ventilating air-cooling pipeline according to claim 1, characterized in that: the distance between the theodolite placing point and the size point is 500mm or 1000mm or 1500 mm.
3. The construction method of the four-way ventilating air-cooling pipeline according to claim 1, characterized in that: the diameter of the reference circle 0' drawn by the scriber is 500 mm-1850 mm.
4. The construction method of the four-way ventilating air-cooling pipeline according to claim 1, characterized in that: the length of the open horizontal field is more than or equal to 10m, and the width of the open horizontal field is more than or equal to 8 m.
5. The construction method of the four-way ventilating air-cooling pipeline according to claim 1, characterized in that: the theodolite placement points D, E, F, F 'are in one-to-one correspondence with A, B, C, C'.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810887417.2A CN109140044B (en) | 2018-08-06 | 2018-08-06 | Construction method of four-way ventilation air cooling pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810887417.2A CN109140044B (en) | 2018-08-06 | 2018-08-06 | Construction method of four-way ventilation air cooling pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109140044A CN109140044A (en) | 2019-01-04 |
| CN109140044B true CN109140044B (en) | 2021-04-20 |
Family
ID=64791933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810887417.2A Active CN109140044B (en) | 2018-08-06 | 2018-08-06 | Construction method of four-way ventilation air cooling pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109140044B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2856705B2 (en) * | 1996-05-08 | 1999-02-10 | 株式会社三五 | Confluence pipe and its manufacturing method |
| CN101598547B (en) * | 2009-07-13 | 2011-02-16 | 中冶京唐建设有限公司 | Method for measuring mounting inclination angle of one-side-inclined structure |
| CN102853193A (en) * | 2012-09-24 | 2013-01-02 | 武汉大学 | Flat steel bifurcated pipe and manufacturing method thereof |
| CN203671109U (en) * | 2014-01-20 | 2014-06-25 | 惠州市亚帮环保设备有限公司 | Air tube accessory |
| CN107588262B (en) * | 2017-10-18 | 2024-02-23 | 中国电建集团中南勘测设计研究院有限公司 | Crescent rib bifurcated pipe |
-
2018
- 2018-08-06 CN CN201810887417.2A patent/CN109140044B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109140044A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109341671B (en) | Method for extracting shield tunnel lining slab staggering amount based on point cloud data | |
| CN102661046B (en) | Method for manufacturing tubular joint of small-angle fully bent tube | |
| CN203603586U (en) | Equipment support regulating device | |
| CN110851956B (en) | Automatic calculation, labeling and plotting method for construction engineering pipeline construction positioning information | |
| CN109612406B (en) | Random detection method for ring splicing quality of splicing pipe pieces of shield tunnel | |
| CN110411338B (en) | Welding gun tool parameter three-dimensional scanning calibration method for robot arc additive repair | |
| CN107255442B (en) | Large scale hydraulic generator stator based on laser tracking technology installs measurement method | |
| CN106767501B (en) | A method of measurement large cylinder circularity | |
| CN112884647A (en) | Embedded part construction positioning method based on BIM point cloud technology guidance | |
| CN112129245A (en) | Converter trunnion coaxiality measuring method based on laser tracker | |
| CN109140044B (en) | Construction method of four-way ventilation air cooling pipeline | |
| CN111691691A (en) | Method for installing, measuring and positioning box body bending and twisting component and drum node | |
| CN110534215B (en) | Pipeline installation parallelism checking method | |
| CN204988223U (en) | Detection apparatus for steel member preparation size precision | |
| CN110565856B (en) | Quick installation method for double-curved-surface metal plate curtain wall | |
| CN108763807B (en) | Method for automatically arranging statistical accessories in pipe network design | |
| CN206588854U (en) | A kind of crotch bend pipe space positioning apparatus | |
| CN113441810A (en) | Cutting device and method for curved surface of connecting steel pipe | |
| CN109669425A (en) | A kind of method of urban duct construction site group to control | |
| CN111774813A (en) | Method for manufacturing inner field of folding pipe | |
| CN111691682A (en) | Assembling method for double-layer skew and skew drum node latticed shell units | |
| CN217111400U (en) | Straight-flow wind tunnel device for gaseous pollutant diffusion simulation | |
| CN219045951U (en) | Prism and target ball combination device and tunnel section three-dimensional scanning mapping auxiliary device | |
| Shi et al. | 3D Laser Scanning Acquisition and Modeling of Tunnel Engineering Point Cloud Data | |
| CN113532342B (en) | Method for determining central points of upper and lower seal head pipe connecting holes of mixing drum of large-scale mixing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |