CN219016151U - Quick freezing and thawing cycle testing machine - Google Patents

Abstract

The application relates to a quick freeze thawing cycle testing machine, which belongs to the field of testing equipment and comprises a box body, wherein a box cover is arranged on the box body, the quick thawing cycle testing machine further comprises a water inlet pipe connected to the box body, a water inlet electromagnetic valve is arranged on the water inlet pipe, the quick thawing cycle testing machine further comprises a controller, and a distance measuring sensor for measuring a first distance between a test piece and the box cover is arranged on the box cover; a liquid level sensor is arranged in the box body and is used for detecting the liquid level height in the box body; the liquid level sensor, the distance measuring sensor and the water inlet electromagnetic valve are all connected with the controller. The application has the effect of improving test efficiency.

Description

Quick freezing and thawing cycle testing machine

Technical Field

The application relates to the field of test equipment, in particular to a quick freeze thawing cycle testing machine.

Background

The freeze thawing test is a project existing in the detection of the physical properties of a plurality of inorganic nonmetallic materials. For example, concrete, ceramic bricks, mortar, bricks, tiles, stones and the like are generally detected by adopting a gas freezing and water dissolving mode, different freezing and thawing time, cycle period, freezing and thawing temperature and water level height are set, and a sample is detected by simulating the change of the natural environment temperature.

At present, before a freeze thawing test is carried out, a test piece is required to be in a water saturation state, a worker places the test piece in a testing machine, water injection of the testing machine is set to reach a preset height according to the size of the test piece, water is enabled to permeate the test piece, after the test piece is soaked for a preset time, the water is emptied, and then the freeze thawing test is continued. In the thawing process of the freeze-thawing test, the frozen test piece may need to be soaked in water at a certain temperature to be thawed, the tester needs to be injected with water again and reach a preset height, so that the water is used for soaking the test piece for a preset time.

When a worker sets a preset water injection height according to the size of a test piece, if experience is insufficient, the liquid level height is likely to be unsuitable, and if the set water level is low, the worker is required to operate to perform secondary water injection; if the set water level is higher, the water injection time is prolonged, and water resource waste is caused, so that the test efficiency is reduced.

Disclosure of Invention

In order to improve test efficiency, the application provides a quick freeze thawing cycle test machine.

The application provides a quick freeze thawing cycle test machine adopts following technical scheme:

the quick freezing and thawing cycle testing machine comprises a box body, wherein a box cover is arranged on the box body, the quick freezing and thawing cycle testing machine further comprises a water inlet pipe connected into the box body, a water inlet electromagnetic valve is arranged on the water inlet pipe, the quick freezing and thawing cycle testing machine further comprises a controller, and a distance measuring sensor for measuring a first distance between a test piece and the box cover is arranged on the box cover;

a liquid level sensor is arranged in the box body and is used for detecting the liquid level height in the box body;

the liquid level sensor, the distance measuring sensor and the water inlet electromagnetic valve are all connected with the controller.

Through adopting above-mentioned technical scheme, when carrying out freeze thawing cycle test, put into the box with the sample, and cover the case lid, range sensor measures the first distance between test piece and the case lid, the controller is according to first distance and box degree of depth, obtain the height of test piece, the controller control solenoid valve that intakes is opened, liquid level sensor detects the liquid level height in the box, when liquid level height reaches the sum of test piece height and preset water head, the controller control solenoid valve that intakes is closed, even the liquid level can totally surpass the test piece in the box, automatic control liquid level height need not artificial estimation and sets up, efficiency of test is improved, simultaneously energy-conservation and water conservation.

Optionally, a plurality of magnetic sheets are equidistantly distributed on the inner wall of the case cover, the distance measuring sensor and the controller are in wireless communication through the wireless communication module, an iron sheet is fixed on the distance measuring sensor, and the iron sheet is adsorbed on any magnetic sheet.

Through adopting above-mentioned technical scheme, when a plurality of test pieces of simultaneous test, can adsorb the iron sheet on the range sensor on the magnetic sheet of high highest test piece top, make the liquid can not have the highest test piece, the simple operation improves test efficiency.

Optionally, a filter frame for placing the test piece is arranged in the box body, and a distance is reserved between the bottom surface of the filter frame and the bottom surface of the box body.

By adopting the technical scheme, when water in the box body is discharged, water with impurities possibly exists at the bottom of the box body, so that the filter frame supports the sample, and the sample is kept clean.

Optionally, a first water pump is arranged at the bottom and is connected with the controller.

Through adopting above-mentioned technical scheme, when controller control first water pump starts, first water pump makes the water in the box carry out the self-loopa, can realize flowing water and melt the effect.

Optionally, at least one temperature sensor is disposed in the box, and each temperature sensor is disposed at intervals and is connected with the controller.

By adopting the technical scheme, the controller can receive the temperature data detected by each temperature sensor, and can obtain more accurate temperature conditions.

Optionally, the controller is connected with a touch display screen.

Through adopting above-mentioned technical scheme, the staff can display operation interface, operation button and inquiry page etc. through touch-type display screen to can be through touch-type display screen modification parameter, inquiry sensor data etc. the staff also can confirm the operation mode of freeze thawing cycle testing machine through touch-type display screen, and the operation is intelligent and convenient.

Optionally, the bottom of the box body is provided with a heating device and a water temperature sensor, and the heating device and the water temperature sensor are both connected with the controller.

By adopting the technical scheme, the controller controls the heating device to start and stop according to the water temperature detected by the water temperature sensor, so that the water temperature in the box body is maintained at the preset temperature.

Optionally, a memory is connected to the controller.

Through adopting above-mentioned technical scheme, when using this freeze thawing test machine to test the sample of different grade type, the controller invokes the data of predetermineeing that the sample type corresponds in the memory, automatic control freezes and melts the step, realizes automatic control, improves detection efficiency to realize the multifunctionality of a machine, reach the multi-purpose of a machine.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when a freeze thawing cycle test is carried out, a sample is placed in a box body, a box cover is covered, a distance measuring sensor measures a first distance between the sample and the box cover, a controller obtains the height of the sample according to the first distance and the depth of the box body, the controller controls a water inlet electromagnetic valve to be opened, a liquid level sensor detects the liquid level height in the box body, when the liquid level height reaches the sum of the height of the sample and a preset water level difference, the controller controls the water inlet electromagnetic valve to be closed, even if the liquid level in the box body can completely overflow the sample, the liquid level height is automatically controlled without manual estimation, the test efficiency is improved, and meanwhile, energy and water are saved;

2. when a plurality of test pieces are tested at the same time, the iron sheet on the ranging sensor can be adsorbed on the magnetic sheet above the test piece with the highest height, so that the liquid level can be enabled to exceed the test piece with the highest height, the operation is convenient, and the test efficiency is improved;

3. a water storage tank is not arranged, so that the risk of water leakage is reduced;

4. realizing multifunction of one machine and achieving the aim of multiple functions of one machine.

Drawings

Fig. 1 is an overall configuration diagram of embodiment 1 in the present application.

Fig. 2 is a block diagram of the structure of embodiment 1 in the present application.

Fig. 3 is a schematic structural view of embodiment 2 in the present application.

Reference numerals illustrate: 1. a case; 2. a case cover; 3. a water inlet pipe; 31. a water inlet electromagnetic valve; 4. a water outlet pipe; 41. a water outlet electromagnetic valve; 5. a first water pump; 6. a water outlet pump; 7. a controller; 8. a refrigeration system; 9. a heating device; 10. a water temperature sensor; 11. an air temperature sensor; 12. a filter frame; 13. a liquid level sensor; 14. a ranging sensor; 15. a memory; 16. a console; 17. a touch display screen; 18. a water temperature control table; 19. a test chamber temperature control table; 20. an alarm; 21. a magnetic sheet; 22. iron sheet; 23. a data line; 24. and a power supply line.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses a quick freezing and thawing cycle testing machine.

Example 1

Referring to fig. 1 and 2, the rapid freeze-thaw cycle tester includes a case 1 and a case cover 2 mounted on the case 1.

The bottom of the box body 1 is connected with a water outlet pipe 4, one side of the box body 1 is connected with a water inlet pipe 3 extending into the bottom of the box body 1, the water inlet pipe 3 is provided with a water inlet electromagnetic valve 31, and the water outlet pipe 4 is provided with a water outlet electromagnetic valve 41 and a water outlet pump 6. The water inlet electromagnetic valve 31, the water outlet electromagnetic valve 41 and the water outlet pump 6 are all connected with a controller 7, and the controller 7 can control the opening of the water inlet electromagnetic valve 31 to control water inlet and control the opening of the water outlet electromagnetic valve 41 and the water outlet pump 6 to control water discharge. The application does not set up the storage water tank, reduces the water leakage risk.

The quick freezing and thawing cycle testing machine further comprises a heating device 9, wherein the heating device 9 is an electric heater, and the heating device 9 is arranged at the bottom of the box body 1 and can heat water in the box body 1. The bottom of the box body 1 is also provided with a water temperature sensor 10, the water temperature sensor 10 is connected with the controller 7 and used for detecting the water temperature, so that the controller 7 controls the starting and stopping of the heating device 9 according to the detected water temperature, and the water temperature is kept at the preset water temperature. In order to avoid the risk of water leakage caused by overheat of water, the water inlet pipe 3 and the water outlet pipe 4 both use hot melting pipes.

The quick freezing and thawing cycle testing machine further comprises a refrigerating system 8 arranged on one side of the box body 1, the refrigerating system 8 adopts an existing refrigerating system 8 and comprises a condenser, an evaporator and a compressor, the cold air discharge end of the compressor is communicated with the inside of the box body 1, and the controller 7 is connected with the refrigerating system 8. At least one air temperature sensor 11 is further arranged on the upper side of the box body 1, the air temperature sensors 11 are arranged at intervals and are connected with the controller 7, and the air temperature sensor is used for detecting the air temperature in the box body 1, so that the controller 7 calculates a plurality of air temperature averages, obtains more accurate air temperature according to detection, and further controls the start and stop of the refrigerating system 8, so that the temperature in the box body 1 is kept at a preset air temperature.

When a test piece needs to be frozen, the controller 7 controls the refrigerating system 8 to refrigerate, so that the inside of the box body 1 is kept at a preset freezing temperature; when a test piece needs to be melted, the controller 7 controls the heating device 9 to heat water to reach a preset temperature, the controller 7 obtains the water temperature or the air temperature in the box body 1 according to the temperature sensor, and when the air temperature is higher than a preset freezing temperature, the controller 7 controls the refrigerating system 8 to refrigerate so as to maintain the air temperature at the preset freezing temperature; when the water temperature is lower than the preset melting temperature, the controller 7 controls the heating device 9 to heat so as to maintain the water temperature at the preset melting temperature.

In order to make the water in the box body 1 in a flowing state, the bottom of the box body 1 is also provided with a first water pump 5, the first water pump 5 can adopt any water pump capable of pumping and draining water, and under the condition that the water in the box body 1 exists, the first water pump 5 continuously pumps and drains water, so that the water in the box body 1 naturally flows. The first water pump 5 is connected with the controller 7, and when the melting time needs to adopt the running water mode, the controller 7 controls the first water pump 5 to start.

The box body 1 is internally provided with a filter frame 12, the filter frame 12 is made of a metal frame, the filter frame 12 is positioned above the bottom surface of the box body 1, the surface is provided with holes, and water can flow out through the holes while receiving a test piece. The test piece is placed in the filter frame 12, and the residual water at the bottom of the box body 1 is prevented from affecting the test piece detection accuracy. Before the test piece is subjected to the freeze-thaw cycle test, it is necessary to keep the test piece in a water saturated state, so it is necessary to soak the test piece in water, to make the water surface over the test piece, and to drain the water out of the tank 1 after a preset time. In order to save water, in the process that the sample of each material reaches a water saturation state, the water in the box body 1 is enabled to exceed the sample by a certain height, and the water quantity required by the sample of each material and the soaking preset time are different. And (5) after the test piece is in a water saturation state according to actual needs, starting a freeze thawing cycle test by a worker.

In performing freeze-thaw cycle tests, some samples require thawing by immersing in water at a temperature. Therefore, the controller 7 needs to stop the water supply by controlling the water supply solenoid valve 31 to close after the water has passed through the sample. In order to measure the liquid level in the tank 1, a liquid level sensor 13 is arranged in the tank 1, and the liquid level sensor 13 is connected with the controller 7, so that the controller 7 can know the liquid level in the tank 1 according to an electric signal sent by the liquid level sensor 13. Therefore, the controller 7 can start the refrigeration system 8 after the water level in the tank 1 reaches the minimum water level; when the water level in the tank body 1 reaches the preset water level, the water inlet electromagnetic valve 31 is closed, so that the effects of stability, energy saving and water saving are achieved. The liquid level sensor 13 not only can enable the liquid level to reach the preset height, but also can prevent the water in the tank body 1 from overflowing.

In order to automatically determine the liquid level, a distance measuring sensor 14 facing the inside of the case 1 is arranged in the center of the case cover 2, the distance measuring sensor 14 is connected with the controller 7, and when the case cover 2 is covered on the case 1, the distance measuring sensor 14 detects a first distance between the top surface of the test piece and the case cover 2 and sends a first distance electric signal to the controller 7. The controller 7 calculates the height of the sample according to the depth of the box body 1 and the first distance between the top surface of the test piece and the box cover 2, and further calculates the preset liquid level height in the box body 1 according to the preset water level difference between the liquid level surface and the sample and the addition of the height of the sample, wherein the method for obtaining the height of the sample by the controller 7 can be easily obtained by a person skilled in the art according to professional knowledge. When the controller 7 determines that the liquid level in the tank body 1 reaches the preset liquid level through the first distance electric signal sent by the distance measuring sensor 14, the controller 7 controls the water inlet electromagnetic valve 31 to stop, so that energy and water are saved.

And when the preset liquid level height is greater than or equal to the depth of the box body 1, the controller 7 controls the water inlet electromagnetic valve 31 to stop when the liquid level height in the box body 1 reaches the depth of the box body 1, so that water is prevented from overflowing.

If multiple test pieces are tested simultaneously, a worker can place the highest test piece on the filter frame 12 directly below the ranging sensor 14, so that the liquid level can be higher than the highest test piece, and can be lower than all the test pieces.

The controller 7 is connected with a memory 15, and preset data corresponding to each sample are stored in the memory 15, wherein the preset data comprise freezing temperature, freezing time, thawing mode, thawing temperature, thawing time, number of freeze thawing cycles of each type of sample, and preset water level difference and soaking preset time between the liquid level surface and the sample. The heating mode comprises static water melting and flowing water melting.

The quick freeze thawing cycle testing machine further comprises a control console 16, a power switch is arranged on the control console 16, and a power line 24 and a data line 23 are connected between the control console 16 and the box body 1. The controller 7 is also connected with a touch display screen 17, the touch display screen 17 is arranged on the console 16, and virtual selection keys of different samples are displayed on the touch screen. After the worker selects the virtual selection key corresponding to the test piece type on the touch display screen 17, the controller 7 obtains preset data corresponding to the test piece stored in the memory 15, and controls the freeze-thawing cycle test to automatically start according to the preset data. A water temperature notification panel and an air temperature control panel are also provided on the console 16 to manually adjust the water temperature and the air temperature.

For example, according to the standard requirements of JC/T830.1, namely dry-hanging facing stone and metal hanging pieces thereof, when the freeze thawing test of the dry-hanging facing stone and the metal hanging pieces thereof is carried out, the dry-hanging facing stone and the metal hanging pieces thereof are frozen for 4 hours at the temperature of minus 20+/-2 ℃, then are put into flowing clean water to be melted for 4 hours, and are circulated for 25 times.

The staff is putting into box 1 with the test piece of dry-hanging facing stone and metal pendant, covers case lid 2 on box 1, and the staff selects the virtual selection button of "dry-hanging facing stone and metal pendant", clicks and begins.

The distance measuring sensor 14 measures the distance between the top surface of the test piece and the box cover 2, the controller 7 calculates to obtain the preset liquid level height, the controller 7 controls the water inlet electromagnetic valve 31 to be opened to start water storage, after the liquid level reaches the preset liquid level height, the water inlet electromagnetic valve 31 is controlled to stop and start timing, and when the timing time reaches the preset time corresponding to the type of the test piece, the controller 7 controls the water outlet pump 6 and the water outlet electromagnetic valve 41 to be opened to rapidly discharge water in the box body 1.

Then, when the liquid level in the tank 1 reaches the lowest liquid level, the controller 7 controls the refrigerating system 8 to start refrigerating, after reaching the preset freezing temperature of-20 ℃, timing is started, when reaching the preset freezing time for 4 hours, the controller 7 repeats the water storage step, and simultaneously starts the heating device 9 to heat the water to the preset melting temperature. And starting the first water pump 5 to realize running water melting, and continuously melting for 4 hours to finish the first freeze thawing cycle. According to the same steps, the controller 7 controls the circulation times, namely the freeze-thawing circulation test is completed.

If the melting mode corresponding to the detected sample is static water, the first water pump 5 is not started after the water storage is over the test piece.

To facilitate detection of safety in water addition and drainage, the controller 7 is connected with an alarm 20. If the controller 7 does not detect the change of the electric signal sent by the liquid level sensor 13 in the process of controlling the water feeding of the water feeding electromagnetic valve 31, the controller 7 controls the alarm 20 to give an alarm and displays alarm information on a display screen possibly due to water leakage of the box body 1, failure of the water feeding electromagnetic valve 31 or failure of the liquid level sensor 13.

If the controller 7 does not detect that the electric signal sent by the liquid level sensor 13 changes in the process of controlling the water discharge by the controller 7, the controller 7 controls the alarm 20 to give an alarm and displays alarm information on a display screen, possibly due to malfunction of the water discharge pump or malfunction of the liquid level sensor 13.

For convenient operation, the controller 7 displays a manual control interface on the touch display screen, so that the quick freeze thawing cycle tester supports manual operation, and each component of the equipment can be manually and independently controlled. The controller 7 displays a water circulation switch and a water heating switch on the touch display screen, and the water circulation switch controls the water circulation in the melting process. And a water heating switch for controlling the water heating in the melting process.

To facilitate the operator's review of the data from each sensor, the controller 7 displays a sensor detection interface on the touch screen 17, which can monitor the status of each sensor.

For ease of operation, a clear key is provided on the console 16 to clear the number of times tested for a long press in seconds. It should be noted that: in the use process, the tested times are kept in a power-off state and cannot be cleared, and the data are cleared before retesting.

In order to modify the preset data corresponding to each sample conveniently, the controller 7 displays a parameter setting virtual key on the touch display screen, clicks a device setting interface, performs parameter setting, and after the modification is completed, the controller 7 stores the parameters in the memory 15.

Example 2:

referring to fig. 3, when a plurality of test pieces are required to be simultaneously tested in the case 1, the difference from embodiment 1 is that the water level should be made to be the highest test piece in order to completely soak each test piece if the heights of the plurality of test pieces are different. It is inconvenient to manually place the highest test piece under the ranging sensor 14.

Therefore, in the present embodiment, the ranging sensor 14 is a wireless ranging sensor 14, and the ranging sensor 14 and the controller 7 communicate wirelessly through a wireless communication module.

The interior of the box body 1 is vertically divided into a plurality of areas, a plurality of magnetic sheets 21 are arranged on the inner wall of the box cover 2, the plurality of magnetic sheets 21 are distributed at intervals, and when the box cover 2 is covered on the box body 1, each magnetic sheet 21 is located right above the corresponding area. An iron sheet 22 is fixed at the bottom end of the distance measuring sensor 14, the iron sheet 22 is adsorbed on one of the magnetic sheets 21, and the distance measuring sensor 14 is fixed on the case cover 2.

The box cover 2 is covered, a virtual selection key of 'dry hanging surface stone and metal hanging parts thereof' is selected, and after the start of clicking, the controller 7 calculates the water storage height according to the data measured by the ranging sensor 14, and the subsequent operation is gradually performed.

To protect the ranging sensor 14, the operator removes the ranging sensor 14 from the cover 2 and places it outside the freeze-thaw cycle tester during the process of immersing the test piece.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The utility model provides a quick freezing and thawing cycle testing machine, includes box (1), be provided with case lid (2) on box (1), still including being connected to inlet tube (3) in box (1), its characterized in that: the water inlet pipe (3) is provided with a water inlet electromagnetic valve (31), the water inlet pipe further comprises a controller (7), and the box cover (2) is provided with a distance measuring sensor (14) for measuring a first distance between a test piece and the box cover (2);

a liquid level sensor (13) is arranged in the box body (1), and the liquid level sensor (13) is used for detecting the liquid level height in the box body (1);

the liquid level sensor (13), the distance measuring sensor (14) and the water inlet electromagnetic valve (31) are all connected with the controller (7).

2. A rapid freeze-thaw cycle testing machine according to claim 1, wherein: a plurality of magnetic sheets (21) are equidistantly distributed on the inner wall of the box cover (2), the distance measuring sensor (14) and the controller (7) are in wireless communication through a wireless communication module, an iron sheet (22) is fixed on the distance measuring sensor (14), and the iron sheet (22) is adsorbed on any one of the magnetic sheets (21).

3. A rapid freeze-thaw cycle testing machine according to claim 1, wherein: a filter frame (12) for placing a test piece is arranged in the box body (1), and a distance is reserved between the bottom surface of the filter frame (12) and the bottom surface of the box body (1).

4. A rapid freeze-thaw cycle testing machine according to claim 1, wherein: the bottom of the box body (1) is provided with a first water pump (5), and the first water pump (5) is connected with the controller (7).

5. A rapid freeze-thaw cycle tester according to any one of claims 1-4, wherein: at least one air temperature sensor (11) is arranged in the box body (1), and each air temperature sensor (11) is arranged at intervals and is connected with the controller (7).

6. A rapid freeze-thaw cycle testing machine according to claim 1, wherein: the controller (7) is connected with a touch display screen (17).

7. A rapid freeze-thaw cycle testing machine according to claim 1, wherein: the bottom of the box body (1) is provided with a heating device (9) and a water temperature sensor (10), and the heating device (9) and the water temperature sensor (10) are connected with the controller (7).

8. A rapid freeze-thaw cycle testing machine according to claim 1, wherein: the controller (7) is connected with a memory (15).

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