阅读说明：本技术 一种用于并联式风管防火阀的安装方法 (Installation method for fire damper of parallel air pipe ) 是由 王超 马超 曾宪友 王映 陈永生 张文平 廖远清 邓萱 徐言毓 贺沸腾 于 2020-12-25 设计创作，主要内容包括：本发明公开了一种用于并联式风管防火阀的安装方法,通过PVC管和螺杆组合构建一个与防火阀外形安装尺寸相同的组合模块定位工装,在进行防火阀安装的时候,首先安装轻便的组合模块定位工装,进行防火阀安装位置的定位,并将防火阀两端的风管按照组合模块定位工装的安装位置进行固定限位,再根据组合模块定位工装的位置进行限位支吊架的安装,再拆除组合模块定位工装,吊装防火阀至其拆取组合模块定位工装安装的位置,最后通过螺栓进行紧固完成安装,由于组合模块定位工装的外形安装尺寸与防火阀相同,就极大的提升了防火阀吊装定位的快捷性,且也极大的保证了与两侧风管的组对对接安装位置精准性,提升防火阀安装的准确性,保证防火阀安装的质量。(The invention discloses an installation method for a fire damper of a parallel air duct, which comprises the steps of constructing a combined module positioning tool with the same installation size as the appearance of the fire damper through the combination of a PVC pipe and a screw rod, installing a portable combined module positioning tool to position the installation position of the fire damper when the fire damper is installed, fixing and limiting the air ducts at two ends of the fire damper according to the installation position of the combined module positioning tool, installing a limiting support hanger according to the position of the combined module positioning tool, dismounting the combined module positioning tool, lifting the fire damper to the installation position of the combined module positioning tool, finally fastening through bolts to complete installation, greatly improving the rapidity of lifting and positioning the fire damper due to the fact that the appearance installation size of the combined module positioning tool is the same as that of the fire damper, and greatly ensuring the accuracy of the assembly butt joint installation position with the air ducts at two sides, the accuracy of fire prevention valve installation is promoted, the quality of fire prevention valve installation is guaranteed.)

1. The installation method for the fire damper of the parallel air pipe is characterized by comprising the following steps: the method comprises the following steps:

s1: a PVC pipe and a screw rod are combined to construct a combined module positioning tool with the same installation size as the appearance of the fire damper;

s2: determining the positioning elevation for installing the fire damper, and designing and manufacturing a limiting support hanger;

s3: aligning the air pipes with the combined module positioning tool, then leveling the air pipes on two sides of the combined module positioning tool, and fixing and limiting the leveled air pipes;

s4: mounting a limiting support hanger according to the mounting position of the combined module positioning tool, so that the limiting support hanger is just matched with the mounting position of the combined module positioning tool;

s5: dismantling the combined module positioning tool, and hoisting the fire damper to the position where the combined module positioning tool is dismantled through the limiting support hanger;

s6: the fixed air pipe and the fire damper are assembled and leveled, and are connected, sealed and fixed through bolts and flange gaskets to complete the installation of the fire damper;

s7: and repeating the steps S3-S6, and sequentially installing the fire valves of the rest parallel air pipes until the installation of the fire valves of all the parallel air pipes is finished.

2. The installation method for the fire damper of the parallel type air duct according to claim 1, characterized in that: the limiting support hanger in the step S2 is in an angle steel hanger form, and the specific setting mode is as follows: structurally, the upper house body needing to be provided with the fire damper is fixed with an angle steel hanger through expansion bolts, a hanger rod is connected and arranged on the angle steel hanger, the hanger rod is fixed through nuts, and the fire damper is fixedly connected through a pre-installed combined module positioning tool.

3. The installation method for the fire damper of the parallel type air duct according to claim 2, characterized in that: the setting mode of the combined module positioning tool in the step S1 is as follows: the PVC pipe is matched with the installation size of the fire damper in a manufacturing mode, the screw rod with the proper size penetrates through the PVC pipe, the positioning nuts are arranged at the two ends of the screw rod, when the PVC pipe is aligned with the air pipes, the screw rod penetrates through the flange holes of the air pipes on the two sides, and the PVC pipe is locked and positioned through the positioning nuts.

4. The installation method for the fire damper of the parallel type air duct according to claim 3, characterized in that: in step S6, when the wind pipe and the fire damper are assembled and leveled, the flange gasket is installed, the flange of the fire damper is aligned with the flange of the wind pipe, and the four diagonal bolts are threaded and nuts are worn without being tightened; then, a sharp punch is used for plugging into the screw holes of the bolts which are not installed, the remaining screw holes are aligned, and the nuts are screwed down until all the bolts are installed; the nut is screwed up gradually and uniformly in a crisscross manner.

5. The installation method for the fire damper of the parallel type air duct according to claim 4, characterized in that: the thickness of the flange gasket is 3-5 mm, and when the flange gasket is installed, the flange gasket does not protrude into the pipe and does not protrude out of the flange.

6. The installation method for the fire damper of the parallel type air duct according to claim 5, wherein: after the installation of the fire damper of the parallel air pipe is finished, the fire damper is subjected to tightness test and debugging.

7. The installation method for the fire damper of the parallel type air duct according to claim 6, wherein: the pressure of the fire damper tightness test is 1.2-1.5 times of the working pressure of the fire damper tightness test.

Technical Field

The invention relates to the technical field of industrial equipment installation, in particular to an installation method for a fire damper of a parallel air pipe.

Background

The fire damper is installed at the smoke outlet, the partition of the fire-proof and smoke-proof partition of the air pipe and the wall of the air pipe of the smoke exhaust machine room, and is closed when the temperature of the smoke in the air pipe reaches 280 ℃, so that the fire can be prevented from spreading, and the fire safety can be ensured. The fire prevention valve is at the in-process of installation, need with the corresponding butt joint of tuber pipe, the fixed spacing of its mounted position is more difficult, causes the fire prevention valve installation comparatively difficult, simultaneously, the sealed demand of fire prevention is guaranteed to the installation of fire prevention valve need higher precision, consequently, just needs technical staff in the field to design the mounting method of tuber pipe fire prevention valve.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the installation method for the fire damper of the parallel air pipe is provided, and the installation convenience and the installation quality of the fire damper of the parallel air pipe are improved.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

s1: a PVC pipe and a screw rod are combined to construct a combined module positioning tool with the same installation size as the appearance of the fire damper;

s2: determining the positioning elevation for installing the fire damper, and designing and manufacturing a limiting support hanger;

s3: aligning the air pipes with the combined module positioning tool, then leveling the air pipes on two sides of the combined module positioning tool, and fixing and limiting the leveled air pipes;

s4: mounting a limiting support hanger according to the mounting position of the combined module positioning tool, so that the limiting support hanger is just matched with the mounting position of the combined module positioning tool;

s5: dismantling the combined module positioning tool, and hoisting the fire damper to the position where the combined module positioning tool is dismantled through the limiting support hanger;

s6: the fixed air pipe and the fire damper are assembled and leveled, and are connected, sealed and fixed through bolts and flange gaskets to complete the installation of the fire damper;

s7: and repeating the steps S3-S6, and sequentially installing the fire valves of the rest parallel air pipes until the installation of the fire valves of all the parallel air pipes is finished.

Further, the limiting support hanger in the step S2 is in the form of an angle steel hanger, and the specific setting mode is as follows: on the top room body structure that needs the installation fire prevention valve, fix angle steel gallows through expansion bolts to connect on the angle steel gallows and set up the jib, the jib is connected the fire prevention valve fixedly through the mode that the nut is fixed.

Further, the setting mode of the combined module positioning tool in the step S1 is as follows: the PVC pipe is matched with the installation size of the fire damper in a manufacturing mode, the screw rod with the proper size penetrates through the PVC pipe, the positioning nuts are arranged at the two ends of the screw rod, when the PVC pipe is aligned with the air pipes, the screw rod penetrates through the flange holes of the air pipes on the two sides, and the PVC pipe is locked and positioned through the positioning nuts.

Further, in step S6, when aligning the air duct with the fire damper pair, first installing the flange gasket, then aligning the flange of the fire damper with the flange of the air duct, threading the four diagonal bolts and wearing the nuts without tightening; then, a sharp punch is used for plugging into the screw holes of the bolts which are not installed, the remaining screw holes are aligned, and the nuts are screwed down until all the bolts are installed; the nut is screwed up gradually and uniformly in a crisscross manner.

Further, the thickness of the flange gasket is 3-5 mm, and when the flange gasket is installed, the flange gasket does not protrude into the pipe or protrude out of the flange.

And further, after the installation of the fire damper of the parallel air pipe is completed, carrying out tightness test and debugging on the fire damper.

Furthermore, the pressure of the fire damper in the tightness test is 1.2-1.5 times of the working pressure of the fire damper.

Compared with the prior art, the invention has the following beneficial effects:

(1) the invention constructs a combined module positioning tool with the same installation size as the appearance of the fire damper through the combination of the PVC pipe and the screw rod, when the fire damper is installed, firstly, the portable combined module positioning tool is installed to position the installation position of the fire damper, the air pipes at the two ends of the fire damper are fixed and limited according to the installation position of the combined module positioning tool, then, the installation of the limiting support hanger is carried out according to the position of the combined module positioning tool, then, the combined module positioning tool is dismantled, the fire damper is hoisted to the installation position of the combined module positioning tool through the installation position of the limiting support hanger and is limited by the limiting support hanger, finally, the installation is finished through the fastening of bolts, and the installation speed of the fire damper is greatly improved because the appearance installation size of the combined module positioning tool is the same as the fire damper, and the assembly butt joint installation with the air pipes on the two sides is also greatly ensured, the installation accuracy of the fire damper is improved, the problem of quality control in the installation process of the fire damper is solved, the rework rate is reduced, the material cost of the manual machine is saved, and good economic benefit and social benefit are obtained.

(2) The combined module positioning tool and the limiting support hanger are skillfully combined by adopting conventional components, the combined module positioning tool is simple in structure, easy to prepare and low in cost, and the installation convenience and the installation quality of the fire damper are further improved by matching with the novel installation method.

Drawings

FIG. 1 is a flow chart of the installation method framework of the present invention.

Fig. 2 is a schematic structural view of the limiting support hanger during hoisting.

Fig. 3 is a schematic side view of the limit support hanger during hoisting.

Fig. 4 is a schematic structural view of the combined module positioning tool during installation.

Wherein, the names corresponding to the reference numbers are:

1-house body structure, 2-expansion bolts, 3-angle steel hanger, 4-hanger rods, 5-fire valves, 6-air pipes, 7-PVC pipes, 8-screws and 9-nuts.

Detailed Description

The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.

As shown in FIGS. 1-4:

an installation method for a fire damper of a parallel air duct comprises the following steps:

firstly: a PVC pipe and a screw rod are combined to construct a combined module positioning tool with the same installation size as the appearance of the fire damper; as shown in fig. 4: preparation and fire prevention valve installation dimension phase-match PVC pipe 7 will be fit for the screw rod 8 of size and pass PVC pipe 7 to set up set nut 9 at the both ends of screw rod, when aliging with the tuber pipe, pass the flange hole of both sides tuber pipe with screw rod 8, and through the locking location of set nut 9.

Secondly, determining the positioning elevation for installing the fire damper, and designing and manufacturing a limiting support hanger; as shown in fig. 2 and 3: the spacing gallows adopts the angle steel gallows form, and its specific mode of setting is: on the upper house body structure 1 that needs the installation fire prevention valve, fix angle steel gallows 3 through expansion bolts 2 to connect on the angle steel gallows and set up jib 4, jib 4 connects fire prevention valve 5 fixedly through the fixed mode of nut.

Thirdly, aligning the air pipes with the combined module positioning tool, then leveling the air pipes on two sides of the combined module positioning tool, and fixing and limiting the leveled air pipes;

fourthly, mounting a limiting support hanger according to the mounting position of the combined module positioning tool, so that the limiting support hanger is exactly matched with the mounting position of the combined module positioning tool;

fifthly, removing the combined module positioning tool, and hoisting the fire damper to the position where the combined module positioning tool is removed through a limiting support hanger;

sixthly, aligning the fixed air pipe and the fire damper in an assembling way, and connecting, sealing and fixing the air pipe and the fire damper through bolts and flange gaskets to finish the installation of the fire damper; when the air pipe and the fire damper are aligned in pair, firstly installing the flange gasket, aligning the flange of the fire damper with the flange of the air pipe, threading four diagonal bolts and wearing nuts without screwing; then, a sharp punch is used for plugging into the screw holes of the bolts which are not installed, the remaining screw holes are aligned, and the nuts are screwed down until all the bolts are installed; the nut is screwed up gradually and uniformly in a cross manner; the thickness of the flange gasket is 3-5 mm, and the flange gasket does not protrude into the pipe or protrude out of the flange when being installed.

And seventhly, repeating the steps, and sequentially installing the fire valves of the rest of the parallel air pipes until the installation of the fire valves of all the parallel air pipes is completed.

Eighthly, after all the fire valves of the parallel air pipes are installed, tightness test and debugging are carried out on the installed fire valves, when pressure test debugging is carried out, the low-pressure air pipe is under 1.5 times of working pressure, the medium-pressure air pipe is under 1.2 times of working pressure and not lower than 750Pa, the high-pressure air pipe is under 1.2 times of working pressure to carry out strength test, the level of more than 5min is kept, no crack is generated at the joint, and the permanent deformation and damage of the whole structure are qualified. The requirements for the tightness test debugging meet the requirements of the following table.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or changes made within the spirit and scope of the main design of the present invention, which still solve the technical problems consistent with the present invention, should be included in the scope of the present invention.