Test chamber tooth-meshing type quick-opening manhole

Abstract

The invention discloses a test chamber tooth-meshing type quick-opening manhole, and belongs to the technical field of test bench test chamber devices. The manhole comprises a cylinder, a cylinder flange, lug plates and a rotating shaft. The cylinder, the cylinder flange and the lug plates are welded, the rotating shaft is inserted into the lug plates, and the two ends of the rotating shaft are limited and fixed through nuts. The manhole also comprises a cover flange and a cover, the cover flange is welded to the cover, a fixing shaft is arranged on the cover and provided with a bearing type rotary mechanism, and the bearing type rotary mechanism and the rotating shaft are fixedly connected with a rotary arm. Teeth are uniformly distributed on the circumference of the cylinder flange and on the circumference of the cover flange, and the cover flange is rotated to mesh with or disengage with the teeth of the cylinder flange to close or open the manhole, so that when the manhole is opened, the rotary arm can rotate around the axis where the rotating shaft is located, and when the manhole is closed, the cover flange and the cover can flexibly rotate around the axial direction of the fixing shaft. The manhole is simple and reasonable in structural design, low in cost and capable of being quickly opened and closed, the working intensity for opening and closing the manhole is reduced, and the sealing effect is good.

Description

technical field [0001] The invention belongs to the technical field of test bench test cabin devices, and more specifically relates to a toothed quick-opening manhole in a test cabin. Background technique [0002] The front cabin of the test cabin of a test vehicle is equipped with an air intake guide basin, an air intake grille, and a rectifying net. Different test pieces need to be installed with different intake air guide basins and intake grilles. There are temperature and pressure probes for measuring engine intake temperature and pressure. At the same time, in order to prevent foreign matter or debris from being sucked into the air inlet by the engine and damaging the engine blades, before each test, it is necessary to enter the front cabin of the test chamber for inspection to ensure safety, so the front cabin of the test cabin needs to be designed with a passage for personnel to enter and exit. The test chamber is generally designed with reference to the pressure ve...

AI Technical Summary

Problems solved by technology

The test chamber is generally designed with reference to the pressure vessel standard. The current chemical industry standards have relevant regulations on the types and technical conditions of steel manholes. Covered flange manholes, etc., the main structure of the above manholes has a pipe and a flange welded on the cylinder, a flange cover and a rotating shaft welded on the cover, and the flange cover and the flange are connected by bolts or handles Fastening, the structure takes a long time to open once, which is time-consuming and labor-intensive

Considering that the main purpose of designing manholes in pressure vessels is for personnel to enter and exit during maintenance, and the frequency of equipment maintenance is not high, the quick opening method has not been considered

[0003] The gear-type quick-opening structure is mostly used in large-scale pressure vessels, such as the current large-scale pressure vessels in the chemical industry-autoclaves and vulcanization tanks (generally above DN2000), the gear-type quick-opening door is used as the door for materials to enter and exit. In use, the toothed structure is often driven by a motor or hydraulic method, which has the advantages of fast opening and closing, wide pressure range, and strong pressure bearing capacity. However, due to the use of external power, the structure is complicated and the cost of use is high.

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