Ice density measurement device

Abstract

An ice density measurement device comprises an ice cutting device and an ice pressing device. The structure of the ice cutting device is as follows: the ice cutting device comprises a pressure plate,the middle part of which is provided with a circular hole; the bottom of the middle position of the pressure plate is provided with a square groove with an ice cutting blade; an outer ring is arrangedat the root of the periphery of the square groove; the outer ring is fastened with the pressure plate through fixed screws; and reinforcement is also arranged outside the square groove. The structureof the ice pressing device is as follows: the ice pressing device comprises a pedestal and a movable rack; one end of the pedestal is provided with a guide pillar which is vertical to the pedestal through a circular nut; the upper end of the guide pillar is provided with a tooth bar and a gear which is engaged with the tooth bar; the top of the movable rack is provided with a gear; the right endof the movable rack is connected to the guide pillar through a right hand wheel; and the left end of the movable rack is equipped with an ice pressing tentacle through a left hand wheel. Through cooperative operation of the ice cutting device and the ice pressing device, measurement operation can be conveniently completed on the ice pressing device so as to conveniently calculate the density value.

Description

technical field [0001] The invention relates to the technical field of density measuring devices, in particular to an ice density measuring device used for measuring the density of ice. Background technique [0002] With the development of my country's high-level icebreaker technology, ship design engineers put forward higher technical requirements for tank model tests. The test pool should not only carry out model tests in conventional ice-free waters, but also be able to simulate the sea ice environment in the laboratory to realize the prediction and evaluation of the icebreaking performance of ships. In order to ensure that during the ship model test, the model ice turns over and squeezes with the hull similar to the real sailing situation, the density of the model ice is required to be consistent with that of sea ice. Ice density is an important index for experimental measurement. [0003] The conventional method is to measure the mass and volume of the ice cube, and t...

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Problems solved by technology

[0012] (1) It is easy to cause irregular ice cubes to be cut

In addition to measuring the density of the cut ice sample, a follow-up dynamic friction coefficient test is required. If the ice is irregular and the contact surface with the model is not large enough, the dynamic friction coefficient test cannot be carried out.

[0013] (2) It is easy to produce experimental errors

When manually immersing ice cubes in water, the drainage volume will be larger than the volume of ice cubes because the tool is also immersed in water. At this time, the obtained mass value will have a certain error, which will affect the subsequent calculated ice density value.

[0014] (3) Inconvenient operation

Because the test process is all manual operation, when the ice cube is immersed in water, the mass at this time needs to be measured simultaneously, which will bring inconvenience to the operation

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