CN112376849A - Vertical ventilation pipe installed in narrow space and construction method - Google Patents
Vertical ventilation pipe installed in narrow space and construction method Download PDFInfo
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- CN112376849A CN112376849A CN202011367901.6A CN202011367901A CN112376849A CN 112376849 A CN112376849 A CN 112376849A CN 202011367901 A CN202011367901 A CN 202011367901A CN 112376849 A CN112376849 A CN 112376849A
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- ventilation pipe
- connecting flange
- pipe
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/04—Air-ducts or air channels
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a vertical ventilation pipe installed in a narrow space and a construction method, wherein the ventilation pipe is formed by mutually connecting adjacent ventilation pipe units, each ventilation pipe unit comprises a pipe body and a connecting flange, the pipe body is provided with an upper opening and a lower opening, the connecting flanges are fixedly connected to the upper end part and the lower end part of the pipe body, and the adjacent ventilation pipe units are connected through the connecting flanges; the connecting flange is provided with connecting structures, and the connecting structures are arranged on the connecting flange at intervals. The construction method of the invention adopts the preset rivet nuts and the lengthened magnetic type electric wrench for operation, thereby effectively avoiding the defect that the operation cannot be carried out due to limited space, and improving the construction efficiency and the construction quality under the condition of not increasing the construction cost.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a vertical ventilation pipe installed in a narrow space and a construction method.
Background
The poor leakproofness of vertical ventilation pipeline mainly because the leakproofness of tuber pipe is not enough, has the condition of leaking out, and the production that leads to the condition of leaking out generally has following reason: first, vertical ventilation pipe generally sets up the position at staircase or elevator antechamber to begin the installation after concrete structure operation is accomplished, because of its space occupancy is little, and its three sides are the cast-in-place structure of concrete, it is narrow and small to lead to its installation operating space, leads to the unable accurate control of installation quality, the vertical wrong racking easily appears. Secondly, in vertical air pipe, come from fore-and-aft wind pressure and receive the viscous resistance of air pipe wall, simultaneously because installation error, there is the upper and lower air pipe decentraction, the condition of staggered joint all around, vertical incoming wind will receive the resistance that the air pipe staggered joint brought like this, in addition the seal of tuber pipe junction is not good, has aggravated the defect that vertical air pipe performance is poor more.
The traditional vertical ventilation pipe adopts a flange connection mode, the operation method is that the bolts and nuts are connected on site at the installation position after the air pipe is assembled, but the common nut of the flange close to one side of concrete cannot be fixed on the common nut, and the common nut does not have enough operation space, so the connection bolt cannot be fastened, and the installation cannot be carried out, and the operability is not realized. In order to reduce the common quality defects and improve the installation feasibility and efficiency, a construction method of embedding a steel plate in a vertical shaft or adopting welding of a thickened steel plate for design change is selected under specific conditions.
The construction method for embedding the steel plate in the shaft is that the semi-finished ventilation pipeline is prefabricated in a factory, then the ventilation pipeline is transported to the site, and then after the ventilation shaft structure is completed, the semi-finished air pipe is directly embedded and anchored on the structure by using expansion bolts for gluing and sealing treatment. But has the defects of long installation time, low work efficiency, large reserved gap quantity, poor installation quality, poor integrity and more parts needing to be glued and sealed, simultaneously enlarges the size of the original air pipe, improves the installation feasibility, increases the cost, reduces the air tightness of the air pipe, needs high-altitude operation on individual parts and increases the risk of workers during installation.
A construction method for welding thickened steel plates of a ventilation pipeline in a shaft is to increase the thickness of a metal plate of the ventilation pipeline in the original design, perform sheet prefabrication in a factory after achieving a welding process, and transport the ventilation pipeline to a site for integral splicing and welding. But has the following disadvantages: when the plate is prefabricated in a factory, the absolute accuracy of the blanking size needs to be ensured, otherwise, the installation error is accumulated and increased along with the increase of the number of welding layers, the cost is multiplied directly due to the thickening of the plate, the number of welding seams is large, the welding time is long, the fire-fighting potential safety hazard exists, and the environmental pollution is large; the mass of air pipe is big, has increased the construction degree of difficulty, has prolonged construction period, and work load is big moreover, and it is long to face limit activity duration.
The invention provides a vertical ventilating pipe installed in a narrow space and a construction method thereof, which are used for solving the problems.
Disclosure of Invention
The invention provides a vertical ventilating pipe installed in a narrow space and a construction method, which have the advantages of good sealing performance and integrity, shorten the installation time and improve the construction efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a vertical ventilation pipe installed in a narrow space is formed by connecting adjacent ventilation pipe units, wherein each ventilation pipe unit comprises a pipe body and a connecting flange, the pipe body is provided with an upper opening and a lower opening, the connecting flanges are fixedly connected to the upper end part and the lower end part of the pipe body, and the adjacent ventilation pipe units are connected through the connecting flanges; the connecting flange is provided with connecting structures, and the connecting structures are arranged on the connecting flange at intervals.
Furthermore, waist-shaped connecting holes are formed in the connecting flange at intervals, the connecting structure is arranged in the waist-shaped connecting holes in the upper surface of the connecting flange, and the connecting structure comprises a rivet nut and a fixing bolt.
Furthermore, a sealing rubber strip is arranged on the connecting flange and arranged on the upper surface of the connecting flange.
And furthermore, sealant is arranged between the connecting flange and the splicing seam of the pipe body.
A construction method of a vertical ventilation pipe installed in a narrow space comprises the following steps:
s1, assembling the vent pipe: preprocessing a pipe body and a connecting flange in a factory, and assembling the pipe body and the connecting flange after transporting a component to a construction site;
s2, pre-assembling the blind rivet nut: pre-assembling a rivet nut on the connecting flange to complete the assembly of the vent pipe unit;
s3, installation and construction: the ventilation pipe unit at the bottom end is placed in a ventilation shaft and fixed, then the ventilation pipe units above the ventilation pipe unit are placed in alignment, and are mutually connected and fixed through a fastening connection structure;
s4, sequentially installing: and (4) sequentially placing and installing the ventilation pipe units from bottom to top until the ventilation pipe is installed.
Further, in step S2, after the rivet nut is preassembled with the rivet gun, a single sealing adhesive tape is adhered to the outer side of the upper surface of the connecting flange, and the joint seam between the connecting flange and the pipe body is filled with the sealant.
Further, in step S3, when fastening the outer connecting structure in the case of fastening the adjacent duct units to each other, the fastening operation is performed using an electric wrench, and when fastening the inner connecting structure, the fastening operation is performed using an extended magnetic type electric wrench from above the upper duct unit.
Further, formula electric spanner is inhaled to extension magnetism includes electric spanner, extension bar and magnetism and inhales the sleeve, the extension bar can be dismantled and connect on electric spanner's output, magnetism inhales sleeve fixed connection in the extension bar outer end, magnetism inhales the sleeve and includes magnetism suction head and fastening head, fastening head fixed connection is on the extension bar.
Further, in step S3, the concrete operation of fastening the connection structure by the lengthened magnetic type electric wrench is as follows, firstly, the lengthened magnetic type electric wrench is assembled, fixing bolts are adsorbed on the magnetic type sleeve, then the fixing bolts are stretched into the crack between the ventilation pipe unit and the ventilation pipeline through the lengthened rod, the fixing bolts are fastened after being aligned with the rivet nuts, and the fastening of the connection structure on the connection flange is completed one by one.
The invention has the following beneficial effects:
the connecting flange is arranged for connecting the ventilation pipe units, and the preset rivet nuts are used for connecting, so that the abutting joint of the adjacent ventilation pipe units is ensured to be accurate to enhance the sealing performance under the condition of not increasing the sealing measures and the structural size, the structural integrity of the ventilation pipe is enhanced, and the error accumulation in the assembling process is avoided;
the adoption is predetermine and is drawn the rivet nut and replace ordinary nut and predetermine the installation to adopt the mode that the formula electric spanner is inhaled to extra long magnetism to carry out the operation, solved the crack undersize between ventilation pipe and the wall body and lead to equipment and personnel can't get into and carry out the defect of flange joint operation, and under the condition that does not increase construction cost, effectively improve efficiency of construction and construction quality.
Drawings
FIG. 1 is a schematic view of the present invention in use
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the construction of the vent unit of the present invention;
fig. 4 is an enlarged view of the part a in fig. 3.
Reference numerals: the pipe comprises a pipe body 1, a connecting flange 2, a waist-shaped connecting hole 21 and a connecting mechanism 3.
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 specification, 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
As shown in fig. 1, 2 and 3, a vertical ventilation pipe installed in a narrow space is formed by connecting adjacent ventilation pipe units, and is arranged in a ventilation pipe with concrete structure walls on the left, right and inner sides, wherein the ventilation pipe unit comprises a pipe body 1 and a connecting flange 2, the pipe body 1 is opened at the upper and lower ends, the connecting flange 2 is fixedly connected to the upper and lower ends of the pipe body 1, and the adjacent ventilation pipe units are connected through the connecting flange 2; the connecting flange 2 is provided with connecting structures 3, and the connecting structures 3 are arranged on the connecting flange 2 at intervals.
As shown in fig. 3 and 4, furthermore, waist-shaped connection holes 21 are formed in the connection flange 2 at intervals, the connection structure 3 is arranged in the waist-shaped connection holes 21 on the upper surface of the connection flange 2, and the connection structure 3 includes a rivet nut and a fixing bolt. When carrying out the concatenation of ventilation pipe unit, the connection structure 3 in the outside can directly install the operation, but because clearance undersize between the inboard pipe wall of ventilation pipe and the wall body, the unable entering of instrument and personnel's arm can't stretch into, consequently at least need carry out the presetting of anchor nut on flange 2 inboard edge, at last place the back that targets in place at the ventilation pipe unit and fasten. The waist-shaped connecting hole 21 can effectively avoid the defect that butt joint installation cannot be carried out due to errors, fine adjustment of the position can be carried out in the installation process, and butt joint preparation is realized. The anchor pulling nut has the advantages of being stable and achieving fine position adjustment compared with a common nut, and the anchor pulling nut is stable in the moving installation process of the ventilation pipe and cannot loosen and fall off in the installation mode of presetting, and can be continuously used in later fastening connection.
Furthermore, a sealing rubber strip is arranged on the connecting flange 2 and arranged on the upper surface of the connecting flange 2.
Preferably, the sealing rubber strip is a fireproof sealing rubber strip.
Preferably, the pipe body 1 is formed by splicing pipe pieces, the pipe pieces are fixedly connected through seaming, the connecting flange 2 is connected with the pipe body 1 through bolts, and sealant is arranged between splicing seams to enhance the sealing performance.
Preferably, the connecting flange 2 is formed by angle steel splicing.
A construction method of a vertical ventilation pipe installed in a narrow space comprises the following steps:
s1, assembling the vent pipe: preprocessing the pipe body 1 and the connecting flange 2 in a factory, and assembling the pipe body 1 and the connecting flange 2 after transporting components to a construction site;
s2, pre-assembling the blind rivet nut: preassembling the rivet nut on the connecting flange 2 to complete the assembly of the vent pipe unit;
s3, installation and construction: the ventilation pipe units at the bottom end are placed in a ventilation shaft and fixed, then the ventilation pipe units above the ventilation pipe units are placed in alignment, and are connected and fixed with each other through a fastening connection structure 3;
s4, sequentially installing: and (4) sequentially placing and installing the ventilation pipe units from bottom to top until the ventilation pipe is installed.
Further, in step S2, after the rivet nut is preassembled by using a rivet gun, a single sealing adhesive tape is adhered to the outer side of the upper surface of the connecting flange 2, and the joint seam between the connecting flange 2 and the pipe body 1 is filled with a sealant.
Further, in step S2, the blind rivet nut is preassembled and fixed by using a rivet gun. The pre-buried rivet nut that sets up replaces ordinary nut has the characteristics of self-locking, can not drop in ventilation pipe unit installation and removal in-process.
Further, in step S3, when the vent pipe units are aligned, the alignment operation is performed and checked, and after the alignment is correct, the sealing rubber strips are torn off, and then the alignment is performed again to stick the adjacent vent pipe units together.
Further, in step S3, when fastening the connecting structure 3 on the outer side when fastening the connecting structure 3 while performing the fixing operation of the mutual connection between the adjacent ventilation duct units, the fastening operation is performed using an electric wrench, and when fastening the connecting structure 3 on the inner side, since the distance between the wall body and the inner duct wall is within 10 ± 2cm, the equipment and the arm cannot enter, and the operator performs the fastening operation using an extended magnetic suction type electric wrench from above the ventilation duct unit located above.
Further, formula electric spanner is inhaled to extension magnetism includes electric spanner, extension bar and magnetism and inhales the sleeve, the extension bar can be dismantled and connect on electric spanner's output, magnetism inhales sleeve fixed connection in the extension bar outer end, magnetism inhales the sleeve and includes magnetism suction head and fastening head, fastening head fixed connection is on the extension bar.
Further, in step S3, inhale formula electric spanner through extension magnetism and carry out concrete operation that connection structure 3 fastened as follows, at first carry out the equipment of the formula electric spanner that inhales of extension magnetism, inhale extension bar and magnetism in proper order on the box connection to electric spanner, adsorb fixing bolt on the box of inhaling magnetism, then stretch into fixing bolt in the crack between ventilation pipe unit and the ventilation pipe through the extension bar, aim at fixing bolt and rivet nut after fastening, then accomplish connection structure 3' S on flange 2 fastening one by one, accomplish the fastening between the adjacent ventilation pipe unit.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (9)
1. A vertical ventilation pipe installed in a narrow space is characterized in that the vertical ventilation pipe is formed by connecting adjacent ventilation pipe units, each ventilation pipe unit comprises a pipe body (1) and a connecting flange (2), the pipe body (1) is opened from top to bottom, the connecting flanges (2) are fixedly connected to the upper end portion and the lower end portion of the pipe body (1), and the adjacent ventilation pipe units are connected through the connecting flanges (2); the connecting flange (2) is provided with connecting structures (3), and the connecting structures (3) are arranged on the connecting flange (2) at intervals.
2. The vertical ventilation duct installed in a narrow space as claimed in claim 1, wherein: waist type connecting holes (21) are arranged on the connecting flange (2) at intervals, the connecting structure (3) is arranged in the waist type connecting holes (21) on the upper surface of the connecting flange (2), and the connecting structure (3) comprises rivet nuts and fixing bolts.
3. The vertical ventilation duct installed in a narrow space as claimed in claim 1, wherein: and a sealing rubber strip is arranged on the connecting flange (2), and is arranged on the upper surface of the connecting flange (2).
4. The vertical ventilation duct installed in a narrow space as claimed in claim 1, wherein: and sealant is arranged between the splicing seams of the connecting flange (2) and the pipe body (1).
5. A method of constructing a vertical ventilation pipe installed in a narrow space according to any one of claims 1 to 4, comprising the steps of:
s1, assembling the vent pipe: preprocessing the pipe body (1) and the connecting flange (2) in a factory, and assembling the pipe body (1) and the connecting flange (2) after transporting components to a construction site;
s2, pre-assembling the blind rivet nut: pre-assembling a rivet nut on the connecting flange (2) to complete the assembly of the vent pipe unit;
s3, installation and construction: the ventilation pipe units at the bottom end are placed in a ventilation shaft and fixed, then the ventilation pipe units above the ventilation pipe units are placed in alignment, and are connected and fixed with each other through a fastening connection structure (3);
s4, sequentially installing: and (4) sequentially placing and installing the ventilation pipe units from bottom to top until the ventilation pipe is installed.
6. The method of constructing a vertical ventilation duct installed in a narrow space according to claim 5, wherein: in step S2, after the rivet nut is preassembled with the rivet gun, a single sealing adhesive tape is stuck to the outer side of the upper surface of the connecting flange (2), and the joint seam between the connecting flange (2) and the pipe body (1) is filled with sealant.
7. The method of constructing a vertical ventilation duct installed in a narrow space according to claim 5, wherein: in step S3, when fastening the outer connecting structure (3) and fastening the adjacent duct units to each other, an electric wrench is used to perform the fastening operation, and when fastening the inner connecting structure (3), an elongated magnetic-type electric wrench is used to perform the fastening operation from above the upper duct unit.
8. The method of constructing a vertical ventilation duct installed in a narrow space according to claim 7, wherein: the formula electric spanner is inhaled to extension magnetism includes electric spanner, extension bar and magnetism and inhales the sleeve, the extension bar can be dismantled and connect on electric spanner's output, magnetism inhales sleeve fixed connection and is in the extension bar outer end, magnetism inhales the sleeve and includes magnetism suction head and fastening head, fastening head fixed connection is on the extension bar.
9. The method of constructing a vertical ventilation duct installed in a narrow space according to claim 8, wherein: in step S3, carry out the concrete operation that connection structure (3) fastened as follows through extension magnetism type electric spanner, at first carry out the equipment of extension magnetism type electric spanner, adsorb fixing bolt on magnetism and inhale the sleeve, then stretch into the crack between ventilation pipe unit and the air pipe through extension bar with fixing bolt, aim at fixing bolt and rivet nut after fastening, accomplish the fastening of connection structure (3) on flange (2) one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011367901.6A CN112376849A (en) | 2020-11-30 | 2020-11-30 | Vertical ventilation pipe installed in narrow space and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011367901.6A CN112376849A (en) | 2020-11-30 | 2020-11-30 | Vertical ventilation pipe installed in narrow space and construction method |
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| Publication Number | Publication Date |
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| CN112376849A true CN112376849A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011367901.6A Pending CN112376849A (en) | 2020-11-30 | 2020-11-30 | Vertical ventilation pipe installed in narrow space and construction method |
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| Country | Link |
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| CN (1) | CN112376849A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062560A (en) * | 2021-03-25 | 2021-07-02 | 中国五冶集团有限公司 | Multi-section air pipe structure in narrow vertical air duct |
| CN113217725A (en) * | 2021-06-03 | 2021-08-06 | 中建四局安装工程有限公司 | Air pipe connecting device in limited space |
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| CN1869496A (en) * | 2005-05-23 | 2006-11-29 | 王建平 | Blast pipe valve connecting flange |
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| CN110629686A (en) * | 2019-08-07 | 2019-12-31 | 河北天振工程技术有限公司 | Thick-wall glass fiber reinforced plastic corrugated pipe for culvert channel and construction method thereof |
| CN210002786U (en) * | 2019-04-25 | 2020-01-31 | 中建四局第一建筑工程有限公司 | super high-rise shaft air pipe device |
| CN211589896U (en) * | 2019-12-03 | 2020-09-29 | 南京江宁高等职业技术学校 | Magnetic suction type combined socket wrench |
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2020
- 2020-11-30 CN CN202011367901.6A patent/CN112376849A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2388259Y (en) * | 1999-08-24 | 2000-07-19 | 恒德新通风设备(北京)有限公司 | Air-conditioing air-duct for safety fire plate |
| CN1869496A (en) * | 2005-05-23 | 2006-11-29 | 王建平 | Blast pipe valve connecting flange |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062560A (en) * | 2021-03-25 | 2021-07-02 | 中国五冶集团有限公司 | Multi-section air pipe structure in narrow vertical air duct |
| CN113217725A (en) * | 2021-06-03 | 2021-08-06 | 中建四局安装工程有限公司 | Air pipe connecting device in limited space |
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Application publication date: 20210219 |