Concrete unilateral freeze thawing tester

A technology for concrete and testing machines, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of large differences in test piece boxes and low temperature accuracy of test piece boxes, and achieve the effect of improving temperature accuracy

Inactive Publication Date: 2014-05-21
SUZHOU DONGHUA TESTING INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a concrete unilateral freeze-thaw test machine, the purpose of which is mainly to solve the problem in the prior art that the difference between the target temperature in the test piece box and its actual temperature is relatively large, that is, the temperature accuracy in the test piece box is not high

Method used

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  • Concrete unilateral freeze thawing tester
  • Concrete unilateral freeze thawing tester

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0016] Such as Figure 1-2 As shown, a concrete unilateral freeze-thaw test machine includes a test piece box 1, a heat dissipation system 6, and a control cabinet 2; a refrigeration tank 3 is horizontally arranged below the test piece box 1; square. Cooling water is housed in the cooling tank 3 the inside. One end of the bottom of the refrigeration tank 3 is connected to an input pipe 31, and the other end is connected to an output pipe 32, and the input pipe 31 is connected to the output pipe 32 through a circulating water pump (not shown in the figure); The bottom of the system 6 is provided with a solenoid valve group 4 , the first end 22 of the solenoid valve group 4 is connected to the specimen box 1 , and the second end 21 is connected to the refrigeration tank 3 .

[0017] The solenoid valve group 4 includes three solenoid valves arranged side by s...

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PUM

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Abstract

The invention discloses a concrete unilateral freeze thawing tester, comprising a test block tank, a radiating system, a control cabinet and insulating layers, wherein the insulating layers are arranged on peripheral wall of the test block tank and below the test block tank, foaming cotton is filled in the insulating layer, a refrigeration slot is horizontally arranged in the middle of the insulating layer below the test block tank; the bottom of one end of the refrigeration slot is connected with an input pipe, and the side of the other end is further connected with an output pipe, the input pipe is connected with the output pipe through a water pump; the bottom of the radiating system is provided with an electromagnetic valve group, the electromagnetic valve group comprises three parallel electromagnetic valves, the first end socket of the electromagnetic valve group is connected with the test block tank, and the second end socket is connected with the refrigeration slot; the test block tank can be pre-cooled through the refrigeration slot so as to reduce the temperature of the test block tank, and the cooling water in the refrigeration slot can be supplemented to the test block tank through the electromagnetic valve so as to balance the deviation between the target temperature and the actual temperature in the test block tank, and the temperature precision in the test block tank can be greatly improved.

Description

technical field [0001] The invention relates to a concrete unilateral freeze-thaw test machine. Background technique [0002] In order to test the anti-freeze performance of concrete specimens, it is necessary to simulate the temperature change of the natural environment and test the concrete specimens, which is called freeze-thaw test. If during the test, only one side of the concrete specimen is in contact with the freezing liquid, it is called a concrete unilateral freeze-thaw test. The freeze-thaw test consists of multiple freeze-thaw cycles. Freeze-thaw cycles are divided into various types according to different test requirements. A more typical one is to control the freeze-thaw cycle at 12 hours, which consists of a cooling phase (4 hours), a maintenance phase (3 hours), a heating phase (4 hours), and a maintenance phase (1 hour). The cooling stage requires time and temperature to change in a linear relationship, that is, within 4 hours, the temperature is uniforml...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
Inventor 王毅成
Owner SUZHOU DONGHUA TESTING INSTR
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