High-temperature gas cooled reactor heat exchange unit load bearing strip latch assembling device
A technology of high-temperature gas-cooled reactors and heat exchange units, which is applied in the direction of hand-held tools and manufacturing tools, which can solve the problems of small clamping torque, large radius of gyration, and extrusion deformation of workpieces, so as to avoid bending under force and ensure vertical Accuracy requirements and the effect of reducing maintenance costs
Inactive Publication Date: 2017-06-09
上海瑞纽机械股份有限公司
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Problems solved by technology
At present, there are mainly two types of external cylindrical fixtures: the one-way needle roller bearing principle fixture and the drill chuck fixture. The one-way needle roller bearing principle fixture is in line contact with the workpiece, and the workpiece material is required to be relatively hard and the outer diameter is large. Squeeze deformation; due to structural limitations, the drill chuck fixture has a large overall radius of gyration and small clamping torque, so this type of fixture is not applicable
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[0027] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0028] Please combine Figure 1 to Figure 7 As shown, a high-temperature gas-cooled reactor heat exchange unit load-bearing bar latch assembly device provided by the present invention includes a load-bearing bar bottom plate 1, and several clip teeth 2 connected to the load-bearing bar bottom plate 1 at intervals. The technical part will not be repeated here. It also includes a torque wrench 3 , an assembly fixture 4 and a parallel wrench 5 , the torque wrench 3 is connected to the top of the assembly fixture 4 , and the parallel wrench 5 is fastened to the bottom of the assembly fixture 4 .
[0029] Preferably, the assembly fixture 4 includes a fixed nut 401, a collet 402, a spring sleeve 403, a coupling head 404 and an inner hexagonal bidirectional joint 405, and an inner hexagonal hole 4051 is provided on the upper end sur...
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The invention discloses a high-temperature gas cooled reactor heat exchange unit load bearing strip latch assembling device which comprises a load bearing strip base plate and a plurality of latches connected to the load bearing strip base plate at intervals. The device further comprises a torque spanner, a clamp for assembling and a tightly-combining spanner. The torque spanner is connected to the top of the clamp for assembling, and the tightly-combining spanner is clamped to the bottom of the clamp for assembling. The surfaces of the latches can be prevented from being scratched or extruded or deformed by force, and the requirements for latch installation torque and perpendicularity obtained after installation are met.
Description
technical field [0001] The invention relates to the technical field of special clamps for nuclear power, and more specifically, relates to a load-bearing bar clip tooth assembly device for a heat exchange unit of a high-temperature gas-cooled reactor. Background technique [0002] The high-temperature gas-cooled reactor belongs to the fourth-generation nuclear reactor technology. The heat exchange unit is the core component of the high-temperature gas-cooled reactor nuclear power plant, and the load-bearing bar is the key supporting component in the heat exchange unit. The load-bearing bar is composed of a load-bearing bar bottom plate and more than 300 clips through thread assembly. Each heat exchange unit needs to be assembled with nearly 6,000 clips. 8NM, the verticality requirement after installation is 0.05mm. The tooth material is 6625 high-temperature nickel-based alloy with a very low hardness of about 140HB, which makes the surface of the tooth easily scratched and...
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IPC IPC(8): B25B27/14
CPCB25B27/14
Inventor 蔡青春刘大伟马丙金
Owner 上海瑞纽机械股份有限公司