Auxiliary device for flange installation of large pipe and valve connection and its use method
A technology for connecting flanges and auxiliary devices, which is applied in the field of auxiliary devices for installing large-scale pipelines and valve connecting flanges, can solve the problems that the installation accuracy is difficult to meet the requirements, the work efficiency is low, and the installation accuracy requirements are high, and the structure is simple and improved. The effect of working efficiency and reducing labor intensity
Active Publication Date: 2015-12-30
ANGANG CONSTR CONSORTIUM
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Problems solved by technology
[0002] When installing large-scale equipment such as hot blast stoves, the installation accuracy of the paired flanges connecting the pipes and valves is high. The traditional technology uses a method of aligning and installing individual flanges. Not only is the work efficiency low, but the installation accuracy is difficult to meet the requirements.
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Embodiment 1
[0030] [Example 1] Use the present invention to align and install the hot blast stove pipe and the valve connecting flange
[0031] The hot blast stove described in this embodiment is a DN1600 hot blast stove, and the connecting flanges between the pipe and the valve are paired flanges, including flange one 5 and flange two 6. The flange installation distance is required to be 800 mm, and the diameter of the flange bolt holes is M40.
[0032] The fully threaded screw 1 is made of round steel with an outer diameter of M36 and a length of 1 m. The anti-loose compensation sleeve 2 has an M36 inner diameter matched with the full-threaded screw 1, the diameter of the end of the conical surface 21 is ￠42, and the slope of the conical surface 21 is 15°; the total length of the anti-loose compensation sleeve 2 is 250mm, and there is a 160mm wide The positioning groove 22.
[0033] During installation, after the preliminary installation of the paired flanges on both sides of the hot ...
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The invention relates to an auxiliary device for installing a large-sized pipeline and valve connection flange. The auxiliary device comprises a total-threaded screw, two groups of releasing compensation sleeves which are symmetrically installed on two sides of the total-threaded screw and a locking part; the total-threaded screw is arranged in a flange hole corresponding to paired flanges in a penetrating manner, one side, which is arranged in the paired flanges, of the total-threaded screw tightly contacts the flange hole through the end surface of the releasing compensation sleeve, and one side, which is arranged outside the paired flange, of the total-threaded screw is fixedly locked through the locking part. The invention also provides an application method of the device. Compared with the prior art, the auxiliary device has beneficial effects that: (1) by adopting the method that the paired flanges are simultaneously centered, the installation precision is guaranteed; (2) by adopting the releasing compensation sleeve with a conical surface to contact the flange hole, not only can the measurement precision be guaranteed, but also the auxiliary device is applicable to various apertures; (3) the structure is simple, the use is convenient, the working efficiency is greatly improved, and the labor intensity of the operation personnel is alleviated.
Description
technical field [0001] The invention relates to the technical field of large-scale equipment installation, in particular to an auxiliary device for flange installation of large-scale pipelines and valves and a method for using the same. Background technique [0002] When installing large-scale equipment such as hot blast stoves, the installation accuracy of the paired flanges connecting the pipes and valves is high. The traditional technology adopts the method of aligning and installing individual flanges. Not only is the work efficiency low, but the installation accuracy is difficult to meet the requirements. Contents of the invention [0003] The invention provides an auxiliary device for installing flanges connecting large pipes and valves and its use method. The method of aligning and installing pairs of flanges at the same time ensures the installation accuracy, and at the same time the work efficiency is significantly improved, reducing the workload of operators. Lab...
Claims
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IPC IPC(8): B25B27/14
CPCB25B27/16
Inventor 杨配良武振海徐佩伟王贤权杨丽君
Owner ANGANG CONSTR CONSORTIUM