A constant temperature hydrostatic balance and using method thereof

A technology of balance and still water, which is applied in the direction of scientific instruments, instruments, specific gravity measurement, etc. It can solve the problems of experimental data error, water splashing out, affecting the test accuracy, etc., and achieve the effect of high accuracy and no water splashing

Active Publication Date: 2020-08-11
ZHEJIANG JIAOKE ENG TESTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in actual operation, when the asphalt concrete block used for the test is put into the basket, if the test piece is directly put into the basket, since the basket is in the water, the impact force and gravity of the test piece will cause water splashes to come out. , affecting the accuracy of the test; if the test piece is slowly put into the basket by hand, although the test piece will not hit the water surface and cause the water to come out, the hand will be immersed in the basket, causing too much water to overflow, resulting in the experimental data large error

Method used

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  • A constant temperature hydrostatic balance and using method thereof
  • A constant temperature hydrostatic balance and using method thereof
  • A constant temperature hydrostatic balance and using method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Such as figure 1 As shown, a constant temperature hydrostatic balance includes a frame 1 , and the frame 1 includes a mounting plate 2 , a supporting plate 3 and a bottom plate 4 . The mounting plate 2 is parallel to the base plate 4 and located above the base plate 4 , and there are two support plates 3 located on both sides of the mounting plate 2 . The supporting plate 3 is perpendicular to the mounting plate 2 and is fixedly connected to the mounting plate 2 and the bottom plate 4 . A balance 5 is arranged on the mounting plate 2, and the balance 5 is a tension balance 5.

[0046] Such as figure 1 As shown, a mounting block 6 for measuring the weight under force is provided at the force-bearing part of the lower end surface of the balance 5 , and the mounting block 6 is fixedly installed on the balance 5 and passes through the mounting plate 2 . The lower end of the installation block 6 is fixedly provided with a connection block 7 , and the projection of the ins...

Embodiment 2

[0057] A method for using the constant temperature hydrostatic balance described in Embodiment 1:

[0058] S1. It is known that the volume of the connecting block 7 is V 1 , the density of the basket 14, the fixed block 11 and the connecting rod 13 are all ρ 2 ; The volume sum of the basket 14, the fixed block 11 and the connecting rod 13 is V 2 , the mass sum of the basket 14, the fixed block 11 and the connecting rod 13 is M 2 ; Let the volume of the specimen be V 3 , the specimen mass is M 3 , the specimen density is ρ 3 ;

[0059] S2, reset the balance 5 to zero, connect the fixed block 11 to the connecting block 13 by rotation, read, and the weight displayed by the balance 5 is M 2 = a; put in the test piece, read, and the weight displayed by the balance 5 is M 2 +M 3 = b;

[0060] S3. Open the water inlet valve 31 to enter water into the overflow barrel 25, the overflow barrel 25 is filled with water, read the reading, use the heating rod 26 to heat the water te...

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Abstract

The invention discloses a constant temperature hydrostatic balance which comprises a frame, wherein the frame comprises a mounting plate and support plates located on the two sides of the lower end of the mounting plate; a balance is arranged on the mounting plate; a mesh basket in known density is hung under the balance; a lifting plate which is in sliding connection with the support plates along the vertical direction is arranged between the two support plates; a driving mechanism which is used for driving the lifting plate to move along the vertical direction is arranged on the support plates; a measuring tank is fixedly arranged on the lifting plate; an overflow barrel which is fixedly arranged on the measuring tank is arranged in the measuring tank; and the projection of the mesh basket along the vertical direction is located in the overflow barrel. The test error caused by water flashing or human factor is avoided in the test process, so that the density of the tested piece is more accurate.

Description

technical field [0001] The invention relates to the field of concrete testing equipment, in particular to a constant temperature hydrostatic balance and a method for using the same. Background technique [0002] In scientific research work, especially civil engineering measurement, the electronic hydrostatic balance is an indispensable measurement tool for the measurement personnel to measure the specific gravity and volume of the sample. [0003] At present, when testing the density of asphalt concrete, a hydrostatic balance is usually used, and this hydrostatic balance includes a balance, an overflow cylinder located directly below the balance, a bracket for erecting the balance directly above the overflow cylinder, and a hanger at the bottom of the balance. The basket used to load the test piece, the overflow tank is provided with a water inlet and a drain, the basket is not in contact with the bottom of the overflow tank. When testing the density, first make the water l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N9/02
CPCG01N9/02G01N2009/026
Inventor 宣晓锋张涛韩斌钱梁叶亚虹王霜王辉郑玲吴燕芳
Owner ZHEJIANG JIAOKE ENG TESTING
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