A freeze-thaw cycle device for anti-freezing durability test

Abstract

The utility model provides a kind of freeze-thaw cycle device for frost resistance durability detection, it is related to material detection technical field, including shell, controller, heat preservation inner container;The downside of the shell is equipped with square groove, and ventilation cover plate is movably connected with the outside of the downside square groove of shell, cooler is installed in the inside left side upper end of the downside square groove of shell, connecting pipe one is connected on the cooler, connecting pipe one passes out shell, storage tank is connected with the upside of connecting pipe one, electric control valve A is installed on connecting pipe one, the upside of the shell is equipped with square groove, and sealing door plate is rotatably connected with the outside of the upside square groove of shell, the setting of exhaust fan can accelerate the discharge speed of air in heat preservation inner container, make the high-temperature gas or low-temperature gas in inner container rapidly discharge, help to adjust the air pressure and temperature in heat preservation inner container, ensure the smooth progress of freeze-thaw cycle test, solve the problem of slow temperature response when freeze-thaw switching in the use process of the freeze-thaw cycle device commonly used at present.

Description

Technical Field

[0001] This utility model belongs to the field of materials testing technology, and more specifically, it relates to a freeze-thaw cycle device for testing freeze resistance and durability. Background Technology

[0002] A freeze-thaw cycle device for testing freeze-thaw durability is an instrument used to test the freeze-thaw resistance of materials. It is mainly used to determine the number of rapid freeze-thaw cycles or the freeze-thaw durability coefficient of materials such as concrete under water-freezing and water-thawing conditions, in order to indicate the freeze-thaw resistance of the material. For example, in the field of construction engineering, it can be used to test the freeze-thaw resistance of concrete specimens to ensure the quality of the project. However, the commonly used freeze-thaw cycle devices have a slow temperature response during freeze-thaw switching, which leads to long time to reach the temperature standard and a long cycle period. Therefore, a new type of freeze-thaw cycle device for testing freeze-thaw durability is needed. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a freeze-thaw cycle device for testing freeze-thaw durability, thereby solving the problem of slow temperature response during freeze-thaw switching in existing commonly used freeze-thaw cycle devices.

[0004] This utility model discloses a freeze-thaw cycle device for testing freeze resistance durability, which is achieved through the following specific technical means: A freeze-thaw cycle device for testing freeze resistance durability includes an outer shell, a controller, and an insulated inner liner; The lower side of the outer shell has a square groove, and a ventilation cover is movably connected to the outside of the square groove. A cooler is installed at the upper left end of the lower square groove inside the outer shell. A connecting pipe is connected to the cooler and extends out of the outer shell. A liquid storage tank is connected to the upper side of the connecting pipe, and an electrically controlled valve A is installed on the connecting pipe. The upper side of the outer shell has a square groove, and a sealing door is rotatably connected to the outside of the upper square groove. The heat-insulating inner liner is placed inside the upper square groove of the outer shell, and a thermometer is installed inside the right side of the heat-insulating inner liner. A base is installed on the lower inner side of the heat-insulating inner liner, and the lower end of the base passes through the lower side of the heat-insulating inner liner. The controller is placed inside the lower square groove of the outer shell, and the electrically controlled valve A is electrically connected to the controller.

[0005] Furthermore, an evaporator is installed inside the square groove on the lower side of the outer shell. A second connecting pipe is provided between the evaporator and the cooler, and an electrically controlled expansion valve is installed on the second connecting pipe. A third connecting pipe is installed on the evaporator, and an electrically controlled valve B is installed on the third connecting pipe. The upper end of the third connecting pipe passes through the outer shell and enters the interior of the base. The upper end of the third connecting pipe is provided with six sets of thin connecting pipes. The thin connecting pipes extend out of the outside of the base, and a set of atomizing nozzles is installed on each of the six sets of thin connecting pipes.

[0006] Furthermore, the rear end of the heat-insulating inner liner is connected to two sets of connecting plates, and a set of heating tubes is installed on each of the two sets of connecting plates.

[0007] Furthermore, the upper end of the base is provided with a rotating disk, the upper side of the rotating disk is provided with an anti-slip pad, and a servo motor is installed inside the upper end of the base, with the motor shaft of the servo motor connected to the rotating disk.

[0008] Furthermore, a conical cover is connected to the upper end of the square groove on the upper side of the outer shell, and an exhaust pipe is connected to the upper side of the conical cover. The exhaust pipe extends out of the outer shell, and a metal sealing valve is installed on the exhaust pipe. A fixed pipe is connected inside the exhaust pipe, and an exhaust fan is installed inside the fixed pipe.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model, by setting a rotating disk, facilitates the rotation of items on the upper part of the base. The rotating disk has an anti-slip pad on its upper side, and a servo motor is installed inside the upper part of the base. The motor shaft of the servo motor is connected to the rotating disk. The rotating disk can drive the items on it to rotate, so that the items can be evenly heated by the heating tube and cooled by the low-pressure low-temperature gaseous refrigerant in the heat-insulating inner liner. This avoids uneven local freeze-thaw cycles and improves the accuracy and reliability of freeze-thaw cycle tests.

[0010] 2. This utility model incorporates heating tubes and two sets of connecting plates connected to the rear end of the insulated inner liner. Each of the two connecting plates has a set of heating tubes installed on it. The two sets of heating tubes work simultaneously, which increases the heating power and accelerates the temperature rise inside the insulated inner liner, thereby improving heating efficiency and shortening the time required to reach the set temperature. In some application scenarios that require rapid heating, this structure can better meet the needs of users.

[0011] 3. This utility model incorporates an exhaust fan, which accelerates the expulsion of air from the insulation liner, allowing high-temperature or low-temperature gases to be quickly expelled. This helps regulate the air pressure and temperature within the insulation liner, ensuring the smooth conduct of the freeze-thaw cycle test. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the structure of the heat-insulating inner liner of this utility model.

[0015] Figure 4 This is a cross-sectional structural diagram of the base of this utility model.

[0016] Figure 5 This is a cross-sectional structural diagram of the exhaust pipe of this utility model.

[0017] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Outer shell; 2. Sealed door panel; 3. Ventilation cover; 4. Liquid storage tank; 5. Connecting pipe one; 6. Exhaust pipe; 7. Metal-sealed valve; 8. Electrically controlled valve A; 9. Cooler; 10. Connecting pipe two; 11. Electrically controlled expansion valve; 12. Evaporator; 13. Controller; 14. Connecting pipe three; 15. Electrically controlled valve B; 16. Insulated inner liner; 17. Heating element; 18. Temperature sensor; 19. Base; 20. Anti-slip mat; 21. Thin connecting pipe; 22. Atomizing nozzle; 23. Servo motor; 24. Rotating disc; 25. Fixed pipe; 26. Exhaust fan. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model. Example:

[0019] As attached Figure 1 To be continued Figure 5 As shown: This utility model provides a freeze-thaw cycle device for testing freeze resistance durability, including a shell 1, a controller 13, and an insulated inner liner 16; A square groove is provided on the lower side of the outer shell 1, and a ventilation cover 3 is movably connected to the outside of the square groove on the lower side of the outer shell 1. A cooler 9 is installed at the upper left end of the square groove on the lower side of the outer shell 1. A connecting pipe 5 is connected to the cooler 9. The connecting pipe 5 extends out of the outer shell 1. A liquid storage tank 4 is connected to the upper side of the connecting pipe 5. An electric control valve A8 is installed on the connecting pipe 5. A square groove is provided on the upper side of the outer shell 1, and a sealing door plate 2 is rotatably connected to the outside of the square groove on the upper side of the outer shell 1. An insulated inner liner 16 is placed inside the square groove on the upper side of the outer shell 1, and a thermometer 18 is installed inside the right side of the insulated inner liner 16. A base 19 is installed on the lower inner side of the insulated inner liner 16, and the lower end of the base 19 passes through the lower side of the insulated inner liner 16. A controller 13 is placed inside the square groove on the lower side of the outer shell 1, and the electric control valve A8 is electrically connected to the controller 13.

[0020] Among them, such as Figure 2 and Figure 4As shown, an evaporator 12 is installed inside the square groove on the lower side of the outer shell 1. A connecting pipe 2 10 is provided between the evaporator 12 and the cooler 9, and an electrically controlled expansion valve 11 is installed on the connecting pipe 2 10. A connecting pipe 3 14 is installed on the evaporator 12, and an electrically controlled valve B15 is installed on the connecting pipe 3 14. The upper end of the connecting pipe 3 14 passes through the outer shell 1 and enters the interior of the base 19. The upper end of the connecting pipe 3 14 is provided with six sets of thin connecting pipes 21, which extend out of the outside of the base 19. A set of atomizing nozzles 22 is installed on each of the six sets of thin connecting pipes 21. The electrically controlled expansion valve 11 is directly installed on the connecting pipe 2 10 between the evaporator 12 and the cooler 9, which can directly receive the temperature feedback of the evaporator 12. The response speed of precise real-time adjustment of refrigerant throttling and pressure reduction is faster, and it can adjust according to the real-time temperature requirements inside the insulated inner liner 16, such as freezing. The stage requires rapid cooling, precise adjustment of refrigerant flow and pressure reduction, avoiding insufficient or excessive cooling caused by the lag in response of traditional throttling devices, ensuring stable output of low-temperature refrigerant from evaporator 12. Connecting pipe 3 14 directly connects evaporator 12 to thin connecting pipe 21 inside base 19, shortening the path of low-temperature refrigerant from evaporation and heat absorption to the release of cold energy, reducing the loss of cold energy in pipeline transmission; at the same time, the low-pressure, low-temperature gaseous refrigerant generated by evaporator 12 does not need to go through complex pipelines and can quickly pass through atomizing nozzle 22, improving cooling efficiency and helping the insulated inner liner 16 reach the set freezing temperature faster. Six sets of thin connecting pipes 21 are evenly distributed from the outside of base 19, and with corresponding atomizing nozzles 22, the low-temperature refrigerant can be evenly sprayed in atomized form into the internal space of insulated inner liner 16, avoiding the temperature gradient difference inside the inner liner caused by traditional single-point cooling.

[0021] Among them, such as Figure 3 As shown, the rear end of the heat-insulating inner liner 16 is connected to two sets of connecting plates, and a set of heating tubes 17 are installed on each of the two sets of connecting plates. By having the two sets of heating tubes 17 work simultaneously, the heating power can be increased, the temperature rise inside the heat-insulating inner liner 16 can be accelerated, thereby improving heating efficiency and shortening the time required to reach the set temperature. In some application scenarios that require rapid heating, this structure can better meet the needs of users. In addition, the reasonable layout of the heating tubes 17 can also better cooperate with the structure of the heat-insulating inner liner 16, reduce heat loss, and further improve heating efficiency.

[0022] Among them, such as Figure 4As shown, a rotating disk 24 is provided at the upper end of the base 19, and an anti-slip pad 20 is provided on the upper side of the rotating disk 24. A servo motor 23 is installed inside the upper end of the base 19. The motor shaft of the servo motor 23 is connected to the rotating disk 24. The rotating disk 24 can drive the items on it to rotate under the drive of the servo motor 23, so that the items can be evenly heated by the heating tube 17 and cooled by the low-pressure low-temperature gaseous refrigerant in the heat preservation liner 16, avoiding uneven local freeze-thaw cycles, thereby improving the accuracy and reliability of the freeze-thaw cycle test.

[0023] Among them, such as Figure 5 As shown, a conical cover is connected to the upper end of the square groove on the upper side of the outer shell 1, and an exhaust pipe 6 is connected to the upper side of the conical cover. The exhaust pipe 6 extends out of the outer shell 1, and a metal sealing valve 7 is installed on the exhaust pipe 6. A fixed pipe 25 is connected inside the exhaust pipe 6, and an exhaust fan 26 is installed inside the fixed pipe 25. The exhaust fan 26 can accelerate the exhaust speed of the air in the heat-insulating inner liner 16, so that the high-temperature gas or low-temperature gas in the inner liner can be quickly discharged, which helps to regulate the air pressure and temperature in the heat-insulating inner liner 16 and ensure the smooth progress of the freeze-thaw cycle test.

[0024] The specific usage and function of this embodiment are as follows: like Figures 1 to 5 As shown, in this invention, the electrically controlled expansion valve 11 is directly installed on the connecting pipe 10 between the evaporator 12 and the cooler 9. This allows for direct reception of temperature feedback from the evaporator 12, enabling more precise and real-time adjustment of the refrigerant's throttling and pressure reduction response. Based on the real-time temperature requirements within the insulation liner 16, such as the need for rapid cooling during the freezing stage, the flow rate and pressure reduction of the refrigerant can be precisely adjusted. This avoids the problems of insufficient or excessive cooling caused by the delayed response of traditional throttling devices, ensuring a stable output of low-temperature refrigerant from the evaporator 12. The connecting pipe 14 directly connects the evaporator 12 to the thin connecting pipe 21 inside the base 19, shortening the path of the low-temperature refrigerant from evaporation and heat absorption to the release of cold energy, thus reducing the amount of cold energy transmitted through the pipes. The low-pressure, low-temperature gaseous refrigerant generated by the evaporator 12 does not need to go through complex pipelines and can quickly pass through the atomizing nozzle 22, improving refrigeration efficiency and helping the insulated inner liner 16 reach the set freezing temperature more quickly. Six sets of thin connecting pipes 21 are evenly distributed from the outside of the base 19, and with the corresponding atomizing nozzles 22, the low-temperature refrigerant can be evenly sprayed in the form of atomization into the internal space of the insulated inner liner 16, avoiding the temperature gradient difference in the inner liner caused by traditional single-point refrigeration. The exhaust fan 26 can accelerate the exhaust speed of the air in the insulated inner liner 16, so that the high-temperature gas or low-temperature gas in the inner liner can be quickly discharged, which helps to regulate the air pressure and temperature in the insulated inner liner 16 and ensure the smooth progress of the freeze-thaw cycle test.

[0025] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

Claims

1. A freeze-thaw cycle device for testing freeze-thaw durability, characterized in that: Includes an outer shell (1), a controller (13), and an insulated inner liner (16); The lower side of the outer shell (1) is provided with a square groove, and a ventilation cover (3) is movably connected to the outside of the square groove on the lower side of the outer shell (1). A cooler (9) is installed at the upper left side of the inside of the square groove on the lower side of the outer shell (1). A connecting pipe (5) is connected to the cooler (9). The connecting pipe (5) extends out of the outer shell (1). A liquid storage tank (4) is connected to the upper side of the connecting pipe (5). An electric control valve A (8) is installed on the connecting pipe (5). The upper side of the outer shell (1) is provided with a square groove, and a rotatable connection is made to the outside of the square groove on the upper side of the outer shell (1). A sealing door panel (2) is attached. The heat-insulating inner liner (16) is placed inside the square groove on the upper side of the outer shell (1). A thermometer (18) is installed inside the right side of the heat-insulating inner liner (16). A base (19) is installed on the lower inner side of the heat-insulating inner liner (16), and the lower end of the base (19) passes through the lower side of the heat-insulating inner liner (16). The controller (13) is placed inside the square groove on the lower side of the outer shell (1). The electric control valve A (8) is electrically connected to the controller (13).

2. The freeze-thaw cycle device for testing freeze resistance durability as described in claim 1, characterized in that: An evaporator (12) is installed inside the square groove on the lower side of the outer shell (1). A connecting pipe two (10) is provided between the evaporator (12) and the cooler (9), and an electrically controlled expansion valve (11) is installed on the connecting pipe two (10). A connecting pipe three (14) is installed on the evaporator (12), and an electrically controlled valve B (15) is installed on the connecting pipe three (14). The upper end of the connecting pipe three (14) passes through the outer shell (1) and enters the interior of the base (19). The upper end of the connecting pipe three (14) is provided with six sets of thin connecting pipes (21). The thin connecting pipes (21) extend out of the outside of the base (19), and a set of atomizing nozzles (22) are installed on each of the six sets of thin connecting pipes (21).

3. The freeze-thaw cycle device for testing freeze resistance durability as described in claim 1, characterized in that: The rear end of the heat-insulating inner liner (16) is connected to two sets of connecting plates, and a set of heating tubes (17) are installed on each of the two sets of connecting plates.

4. The freeze-thaw cycle device for testing freeze resistance durability as described in claim 1, characterized in that: The upper end of the base (19) is provided with a rotating disk (24), and the upper side of the rotating disk (24) is provided with an anti-slip pad (20). A servo motor (23) is installed inside the upper end of the base (19), and the motor shaft of the servo motor (23) is connected to the rotating disk (24).

5. The freeze-thaw cycle device for testing freeze resistance durability as described in claim 1, characterized in that: The upper end of the square groove on the upper side of the outer shell (1) is connected to a conical cover, and an exhaust pipe (6) is connected to the upper side of the conical cover. The exhaust pipe (6) extends out of the outer shell (1), and a metal sealing valve (7) is installed on the exhaust pipe (6). A fixed pipe (25) is connected inside the exhaust pipe (6), and an exhaust fan (26) is installed inside the fixed pipe (25).

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