CN103808753A - Concrete unilateral freeze thawing tester - Google Patents
Concrete unilateral freeze thawing tester Download PDFInfo
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- CN103808753A CN103808753A CN201210591103.0A CN201210591103A CN103808753A CN 103808753 A CN103808753 A CN 103808753A CN 201210591103 A CN201210591103 A CN 201210591103A CN 103808753 A CN103808753 A CN 103808753A
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- test block
- block tank
- test specimen
- temperature
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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
The present invention relates to the monolateral freezing-thawing test machine of a kind of concrete.
Background technology
In order to detect the anti-freezing property of concrete sample, need simulating nature circle variation of ambient temperature, concrete sample is tested, be called freezing-thawing test.If in process of the test, concrete sample, as long as contact with refrigerating fulid, is called as the monolateral freezing-thawing test of concrete on one side.Freezing-thawing test is made up of multiple freezing and thawing cycles.Freezing and thawing cycle is divided into polytype according to the difference of test request.Comparatively typical one is that freezing and thawing cycle is controlled to 12 hours, is made up of temperature-fall period (4 hours), maintenance stage (3 hours), temperature rise period (4 hours), maintenance stage (1 hour).Temperature-fall period wants seeking time and temperature to change by linear relationship, in 4 hours, temperature evenly drops to subzero 20 ℃ by 20 ℃ above freezing, then keep three hours at subzero 20 ℃, then start to heat up, the temperature rise period wants seeking time and temperature to change by linear relationship, in 4 hours, temperature evenly rises to 20 ℃ above freezing by subzero 20 ℃, then keeps one hour at 20 ℃ above freezing, completes a freezing and thawing cycle.
At present, the monolateral cold testing machine that melts of concrete mainly comprises test specimen case, cooling system, switch board, and heat-insulation layer, and heat-insulation layer is arranged on perisporium and the below of described test specimen case, is filled with foamed cotton in heat-insulation layer; Cooling system is arranged on the below of test specimen case.When test concrete antifreezing performance, normally adopt concrete sample is put into test specimen case together with solution, so that test specimen is freezed and heating operation.But, the monolateral cold device to the supplementary chilled water of test specimen case of testing machine that melts of existing concrete, thereby cannot balance test specimen case internal object temperature and its actual temperature, therefore the diversity ratio of test specimen case internal object temperature and its actual temperature is larger, the precision of the temperature in test specimen case is not high.
Summary of the invention
The invention provides the monolateral freezing-thawing test machine of a kind of concrete, its object is mainly that to solve in prior art the diversity ratio of test specimen case internal object temperature and its actual temperature larger, i.e. the not high problem of precision of the temperature in test specimen case.
For achieving the above object, technical scheme of the present invention is as follows: the monolateral freezing-thawing test machine of a kind of concrete, comprises test specimen case, cooling system, switch board; The lower horizontal of described test specimen case is provided with refrigeration groove; One end of described refrigeration groove bottom is connected with input pipe, and its other end is connected with efferent duct, and described input pipe is connected by water circulating pump with described efferent duct; The bottom of described cooling system is provided with solenoid valve group, and the first termination of described solenoid valve group is connected with described test specimen case, and its second termination is connected with described refrigeration groove.
Related content in technique scheme is explained as follows:
1,, in such scheme, described refrigeration groove is rectangle.
2,, in such scheme, described solenoid valve group comprises three solenoid valves that are arranged side by side; These three solenoid valves comprise two little solenoid valves and a large solenoid valve.
3, in such scheme, in the perisporium of described test specimen case, be provided with heat-insulation layer, in described heat-insulation layer, be filled with foamed cotton.
Due to the utilization of the technical program, the present invention compared with prior art has following advantages:
The present invention is provided with refrigeration groove below test specimen case; The bottom of cooling system is provided with solenoid valve group; Can carry out precooling to test specimen case by refrigeration groove, to reduce the temperature of test specimen case, and can give in test specimen case and supplement the chilled water in refrigeration groove by solenoid valve, with the deviation of balance test specimen case internal object temperature and actual temperature, thereby greatly improve the temperature accuracy in test specimen case.
Accompanying drawing explanation
Accompanying drawing 1 is the main TV structure schematic diagram of the present invention;
Accompanying drawing 2 is looked schematic diagram for the present invention with the master of solenoid valve group.
In above accompanying drawing: 1, test specimen case; 2, switch board; 3, refrigeration groove; 4, solenoid valve group; 5, heat-insulation layer; 6, cooling system; 21, the first termination; 22, the second termination; 31, input pipe; 32, efferent duct; 41, little solenoid valve; 42, large solenoid valve.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
As shown in Figure 1-2, the monolateral freezing-thawing test machine of a kind of concrete, comprises test specimen case 1, cooling system 6, switch board 2; The lower horizontal of described test specimen case 1 is provided with refrigeration groove 3; Described refrigeration groove 3 is for being rectangle.Chilled water is equipped with in refrigeration groove 3 the insides.One end of described refrigeration groove 3 bottoms is connected with input pipe 31, and its other end is connected with efferent duct 32, and described input pipe 31 is connected by water circulating pump (not shown) with described efferent duct 32; The bottom of described cooling system 6 is provided with solenoid valve group 4, and the first termination 22 of described solenoid valve group 4 is connected with described test specimen case 1, and its second termination 21 is connected with described refrigeration groove 3.
Described solenoid valve group 4 comprises three solenoid valves that are arranged side by side; These three solenoid valves comprise two little solenoid valves 41 and a large solenoid valve 42.
In the perisporium of described test specimen case 1, be provided with heat-insulation layer 5, in described heat-insulation layer 5, be filled with foamed cotton.
The monolateral freezing-thawing test machine of concrete is in the time of work, and refrigeration groove 3 first carries out precooling to test specimen case 1; In the time that the Temperature Difference Ratio between actual temperature and target temperature in test specimen case 1 is larger, open large solenoid valve 42, to the chilled water in the interior supplementary refrigeration groove 3 of test specimen case 1, with the target temperature in Fast-Balance test specimen case 1 and the deviation of actual temperature; Temperature Difference Ratio between actual temperature and target temperature in test specimen case 1 hour, open little solenoid valve 41, to the chilled water in the interior supplementary refrigeration groove 3 of test specimen case 1, with the target temperature in active balance test specimen case 1 and the deviation of actual temperature, therefore can greatly improve the temperature accuracy in test specimen case 1.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (4)
1. the monolateral freezing-thawing test machine of concrete, comprises test specimen case (1), cooling system (6), switch board (2); It is characterized in that: the lower horizontal of described test specimen case (1) is provided with refrigeration groove (3); One end of described refrigeration groove (3) bottom is connected with input pipe (31), and its other end is connected with efferent duct (32), and described input pipe (31) is connected by water circulating pump with described efferent duct (32); The bottom of described cooling system (6) is provided with solenoid valve group (4), and first termination (22) of described solenoid valve group (4) is connected with described test specimen case (1), and its second termination (21) is connected with described refrigeration groove (3).
2. the monolateral freezing-thawing test machine of concrete according to claim 1, is characterized in that: described refrigeration groove (3) is rectangle.
3. the monolateral freezing-thawing test machine of concrete according to claim 1, is characterized in that: described solenoid valve group (4) comprises three solenoid valves that are arranged side by side; These three solenoid valves comprise two little solenoid valves (41) and a large solenoid valve (42).
4. the monolateral freezing-thawing test machine of concrete according to claim 1, is characterized in that: in the perisporium of described test specimen case (1), be provided with heat-insulation layer (5), described heat-insulation layer is filled with foamed cotton in (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210591103.0A CN103808753A (en) | 2012-12-29 | 2012-12-29 | Concrete unilateral freeze thawing tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210591103.0A CN103808753A (en) | 2012-12-29 | 2012-12-29 | Concrete unilateral freeze thawing tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103808753A true CN103808753A (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210591103.0A Pending CN103808753A (en) | 2012-12-29 | 2012-12-29 | Concrete unilateral freeze thawing tester |
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| CN (1) | CN103808753A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089971A (en) * | 2014-07-22 | 2014-10-08 | 常熟市环境试验设备有限公司 | Device for testing freezing and thawing properties of concrete hollow blocks |
| CN104458791A (en) * | 2014-12-19 | 2015-03-25 | 苏州市东华试验仪器有限公司 | Rapid freeze-thawing testing machine with good heat radiation effect |
| CN104492512A (en) * | 2014-12-19 | 2015-04-08 | 苏州市东华试验仪器有限公司 | Micro-cooling capacity exchange device |
| CN105628593A (en) * | 2015-12-21 | 2016-06-01 | 苏州市东华试验仪器有限公司 | Quick freeze-thaw box with balance flow guide pipe |
-
2012
- 2012-12-29 CN CN201210591103.0A patent/CN103808753A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089971A (en) * | 2014-07-22 | 2014-10-08 | 常熟市环境试验设备有限公司 | Device for testing freezing and thawing properties of concrete hollow blocks |
| CN104458791A (en) * | 2014-12-19 | 2015-03-25 | 苏州市东华试验仪器有限公司 | Rapid freeze-thawing testing machine with good heat radiation effect |
| CN104492512A (en) * | 2014-12-19 | 2015-04-08 | 苏州市东华试验仪器有限公司 | Micro-cooling capacity exchange device |
| CN105628593A (en) * | 2015-12-21 | 2016-06-01 | 苏州市东华试验仪器有限公司 | Quick freeze-thaw box with balance flow guide pipe |
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Application publication date: 20140521 |