CN210690581U - Self-contraction constant temperature testing device - Google Patents
Self-contraction constant temperature testing device Download PDFInfo
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- CN210690581U CN210690581U CN201921070540.1U CN201921070540U CN210690581U CN 210690581 U CN210690581 U CN 210690581U CN 201921070540 U CN201921070540 U CN 201921070540U CN 210690581 U CN210690581 U CN 210690581U
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Abstract
The utility model discloses a from shrink constant temperature testing arrangement, it includes double-deck groove and constant temperature and supplies liquid device, the outer intercommunication in liquid outlet and the double-deck groove of constant temperature supply liquid device are respectively through pipeline and liquid return mouth, be equipped with the bellows that heat preservation liquid and concrete slurry were equipped with in the inlayer of double-deck groove, the bellows submergence is in the heat preservation liquid. The utility model discloses a constant temperature supplies liquid device to the skin confession liquid in double-deck groove, and the constant temperature liquid in the double-deck groove skin carries out the heat exchange with the heat preservation liquid in the inlayer to make heat preservation liquid constant temperature, under the slurry in the bellows can be in the even and stable state of temperature, the test result of slurry self-contraction experiment is more accurate. The utility model discloses simple structure has reduced the shrink deformation influence of the uneven and temperature fluctuation of temperature to the slurry sample in the bellows, has reduced experimental error.
Description
Technical Field
The utility model relates to a testing arrangement, especially a from shrink constant temperature testing arrangement among the concrete material field.
Background
Compared with the traditional cement-based material, the high-performance cement-based material has high compressive strength, strong deformation resistance, good impermeability and frost resistance, but large self-contraction deformation. Under restraint, microcracks due to self-contraction develop into continuous macrocracks, which can lead to reduced strength and durability, affecting the useful life of the building structure. Therefore, accurate measurement of the self-shrinkage of cementitious materials is essential to evaluate the volume stability and cracking performance of cementitious materials.
The self-contraction refers to the volume deformation of the slurry under the conditions of no external force, constant temperature and sealing (no matter exchange with the outside). The corrugated pipe is used for testing the self-contraction of the slurry, so that the slurry can be effectively prevented from exchanging substances with the external environment, and the corrugated pipe is an accepted self-contraction measuring mode at present. However, the constant temperature is currently controlled by circulating water in a water bath kettle around a plurality of circles in a container filled with experimental silicone oil through a silica gel hose and then refluxing the water to the water bath kettle. The temperature control in this way can cause the phenomena that the temperature of the silicone oil is unbalanced, the temperature of the silicone oil near the silicone hose is higher than that of the silicone oil far away, and the temperature of the silicone oil is greatly influenced by the surrounding condition of the silicone hose. This increases the influence of temperature on the deformation and shrinkage of the formed bellows sample, increases experimental error, and is not favorable for correctly evaluating the volume stability of slurry.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a from shrink constant temperature testing arrangement, it can guarantee that the concrete slurry in the bellows keeps experimenting under the constant temperature state.
The utility model provides a solution of its technical problem is: the utility model provides a from shrink constant temperature testing arrangement, its includes double-deck groove and constant temperature supplies liquid device, the outer intercommunication in constant temperature supplies liquid device's liquid outlet and the liquid return mouth respectively through pipeline and double-deck groove, be equipped with heat preservation liquid and the bellows that is equipped with the concrete slurry in the inlayer of double-deck groove, the bellows submergence is in the heat preservation liquid.
As a further improvement of the technical scheme, the constant-temperature liquid supply device comprises a constant-temperature water tank and a cold and hot preparation device, an inlet of the constant-temperature water tank is connected with a water source, and the cold and hot preparation device is electrically connected to the controller.
As a further improvement of the technical scheme, a first sealing cover capable of being opened and closed is arranged on the notch of the constant-temperature water tank, and a first lifting handle is arranged on the first sealing cover.
As a further improvement of the technical scheme, a liquid outlet of the constant-temperature water tank is connected with the lower part of the outer layer in the double-layer tank through a pipeline, and a liquid return port of the constant-temperature water tank is connected with the upper part of the outer layer in the double-layer tank through a pipeline.
As a further improvement of the technical scheme, a temperature sensor is arranged on the outer side of the double-layer groove and is electrically connected with the controller.
As a further improvement of the technical scheme, a foam heat-insulating layer is attached to the outer side of the double-layer groove.
As a further improvement of the technical scheme, a second sealing cover capable of being opened and closed is arranged on the double-layer groove, the second sealing cover covers the notches of the inner layer and the outer layer of the double-layer groove, and a second lifting handle is arranged on the second sealing cover.
As a further improvement of the technical scheme, the double-layer groove is a stainless steel component, and the pipeline is a silica gel component.
The utility model has the advantages that: the utility model discloses a constant temperature supplies liquid device to the skin confession liquid in double-deck groove, and the constant temperature liquid in the double-deck groove skin carries out the heat exchange with the heat preservation liquid in the inlayer to make heat preservation liquid constant temperature, under the slurry in the bellows can be in the even and stable state of temperature, the test result of slurry self-contraction experiment is more accurate. The utility model discloses simple structure has reduced the shrink deformation influence of the uneven and temperature fluctuation of temperature to the slurry sample in the bellows, has reduced experimental error.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
Fig. 1 is a schematic view of the present invention;
fig. 2 is a sectional view of the double-layered groove a-a of fig. 1.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions.
Referring to fig. 1-2, a self-contraction constant temperature testing device comprises a double-layer tank 1 and a constant temperature liquid supply device, wherein a liquid outlet and a liquid return port of the constant temperature liquid supply device are respectively communicated with an outer layer 11 in the double-layer tank 1 through a pipeline 8, a heat preservation liquid and a corrugated pipe 9 filled with concrete slurry are arranged in an inner layer 12 of the double-layer tank 1, and the corrugated pipe 9 is immersed in the heat preservation liquid. Double-deck groove 1 is the stainless steel component, pipeline 8 is the silica gel component. Preferably, the heat-insulating liquid is silicone oil. The length, width and depth of the inner layer 12 of the double-layer groove 1 are respectively as follows: 800mm, 300mm and 200mm, and the length, width and depth of the outer layer 11 are 840mm, 340mm and 240mm respectively. The constant-temperature liquid supply device conveys constant-temperature water to the outer layer 11 of the double-layer groove 1 through the liquid outlet, the constant-temperature water circulates continuously in the outer layer 11, and finally flows back to the constant-temperature liquid supply device through the pipeline 8 and the liquid return port, and is heated again to ensure the temperature of the constant-temperature liquid supply device. The constant temperature water in the outer layer 11 uniformly exchanges heat with the silicon oil in the inner layer 12, and the silicon oil is uniformly heated, so that the concrete slurry in the corrugated pipe 9 is always kept in a constant temperature state, the fluctuation of the experimental temperature is reduced, and the accuracy of the experimental result is improved.
Further as a preferred embodiment, the constant temperature liquid supply device comprises a constant temperature water tank 2 and a cold and hot preparation device, wherein an inlet of the constant temperature water tank 2 is connected with a water source, and the cold and hot preparation device is electrically connected to the controller. The total capacity of the constant-temperature water tank 2 is 15L, the constant-temperature water tank 2 pumps constant-temperature water into the outer layer 11 of the double-layer tank 1 through a circulating pump, and the flow rate of the circulating pump is 13L/min. The controller controls the water temperature in the constant temperature water tank 2 to rise and fall through the cold and hot preparation device, the settable temperature range in the constant temperature water tank 2 is 5-100 ℃, and the temperature fluctuation degree is +/-0.01 ℃ of the set temperature. Before starting the experiment, the water source is opened, water from the water source flows into the constant-temperature water tank 2 through the inlet, when 15L of water exists in the constant-temperature water tank, the water source is closed, and the controller and the cold and hot only-removing device are opened to refrigerate or heat the water in the constant-temperature water tank 2.
In a further preferred embodiment, a first sealing cover 3 which can be opened and closed is provided on the notch of the constant-temperature water tank 2, and a first lifting handle 4 is provided on the first sealing cover 3. In order to avoid the temperature fluctuation of the constant temperature water in the constant temperature water tank 2 and reduce the heat loss of the constant temperature water, the first sealing cover 3 is arranged to ensure the constant temperature in the constant temperature water tank 2.
Further as a preferred embodiment, the liquid outlet of the thermostatic water tank 2 is connected with the lower part of the outer layer 11 in the double-layer tank 1 through a pipeline 8, and the liquid return port of the thermostatic water tank 2 is connected with the upper part of the outer layer 11 in the double-layer tank 1 through the pipeline 8, so that the outer layer 11 of the double-layer tank 1 can be filled with thermostatic water, and the heat transfer balance of the silicone oil in the inner layer 12 is ensured.
In a further preferred embodiment, a temperature sensor 5 is disposed outside the double-layer tank 1, and the temperature sensor 5 is electrically connected to a controller. The temperature sensor 5 monitors the temperature of the water in the outer layer 11 of the double-layer tank 1 in real time, when the temperature sensor 5 detects that the temperature of the water in the outer layer 11 is low, the temperature sensor sends an electric signal to the controller, and then the cold and heat taking device is controlled to properly increase the temperature of the water in the constant-temperature water tank 2, and vice versa. The temperature sensor 5 can only detect and control the water temperature of the outer layer 11, the temperature of the silicone oil in the inner layer 12 is more stable, and the experimental effect is better.
Further as a preferred embodiment, a foam insulation layer is attached to the outer side of the double-layer tank 1 to reduce heat exchange between water in the outer layer 11 and the outside, so that experimental temperature fluctuation is reduced.
In a further preferred embodiment, the double-layer tank 1 is provided with a second sealing cover 6 which can be opened and closed, the second sealing cover 6 covers the notches of the inner layer 12 and the outer layer 11 of the double-layer tank, and the second sealing cover 6 is provided with a second lifting handle 7. The second seal cap 6 is also a stainless steel member having dimensions 805mm x 305 mm. The second sealing cover 6 reduces heat exchange between the inner layer 12 and the outer layer 11 and the outside, and achieves a better constant temperature effect.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.
Claims (8)
1. A self-contraction constant temperature test device is characterized in that: including double-deck groove (1) and constant temperature liquid supply device, the liquid outlet of constant temperature liquid supply device and outer layer (11) intercommunication in liquid return port respectively through pipeline (8) and double-deck groove (1), be equipped with in inlayer (12) of double-deck groove (1) heat preservation liquid and bellows (9) that are equipped with the concrete slurry, bellows (9) submergence is in the heat preservation liquid.
2. The self-retracting thermostatic test device of claim 1, wherein: the constant-temperature liquid supply device comprises a constant-temperature water tank (2) and a cold and hot preparation device, an inlet of the constant-temperature water tank (2) is connected with a water source, and the cold and hot preparation device is electrically connected to the controller.
3. The self-retracting thermostatic test device of claim 2, wherein: the constant-temperature water tank is characterized in that a first sealing cover (3) capable of being opened and closed is arranged on a notch of the constant-temperature water tank (2), and a first lifting handle (4) is arranged on the first sealing cover (3).
4. The self-retracting thermostatic test device of claim 2, wherein: the liquid outlet of the constant-temperature water tank (2) is connected with the lower part of the outer layer (11) in the double-layer tank (1) through a pipeline (8), and the liquid return port of the constant-temperature water tank (2) is connected with the upper part of the outer layer (11) in the double-layer tank (1) through the pipeline (8).
5. The self-retracting thermostatic test device of claim 2, wherein: the outer side of the double-layer groove (1) is provided with a temperature sensor (5), and the temperature sensor (5) is electrically connected with the controller.
6. The self-retracting thermostatic test device of claim 1, wherein: and a foam heat-insulating layer is adhered to the outer side of the double-layer groove (1).
7. The self-retracting thermostatic test device of claim 1, wherein: the double-layer groove (1) is provided with a second sealing cover (6) capable of being opened and closed, the second sealing cover (6) covers notches of an inner layer (12) and an outer layer (11) in the double-layer groove, and a second lifting handle (7) is arranged on the second sealing cover (6).
8. The self-retracting thermostatic test device of claim 1, wherein: double-deck groove (1) is the stainless steel component, pipeline (8) are the silica gel component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921070540.1U CN210690581U (en) | 2019-07-09 | 2019-07-09 | Self-contraction constant temperature testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921070540.1U CN210690581U (en) | 2019-07-09 | 2019-07-09 | Self-contraction constant temperature testing device |
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| Publication Number | Publication Date |
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| CN210690581U true CN210690581U (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921070540.1U Active CN210690581U (en) | 2019-07-09 | 2019-07-09 | Self-contraction constant temperature testing device |
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| CN (1) | CN210690581U (en) |
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- 2019-07-09 CN CN201921070540.1U patent/CN210690581U/en active Active
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