CN219201036U - Temperature control type concrete vacuum water-retaining instrument - Google Patents

Abstract

The utility model relates to a temperature control type concrete vacuum water retention instrument which comprises a sample container and a water bath temperature regulating component, wherein the sample container is provided with a containing cavity for containing a test block, the containing cavity is kept in a negative pressure state, the side wall of the sample container is provided with a first water inlet and a first water outlet which are communicated with the containing cavity, the water bath temperature regulating component comprises a water tank, a heating refrigerator, a water pump, a circulating water inlet pipe, a circulating water outlet pipe and a liquid level valve, the heating refrigerator and the water pump are fixedly arranged in the water tank, the water tank is communicated with the circulating water inlet pipe, one end of the circulating water inlet pipe, which is far away from the water pump, is communicated with the first water outlet, the circulating water outlet pipe is communicated with the water tank and the first water inlet, and the liquid level valve is arranged on the circulating water outlet pipe; the concrete vacuum water-retaining machine solves the problems that the temperature of a water-retaining test cannot be adjusted, the temperature of the water-retaining test is greatly influenced by the temperature of the external environment, the temperature of the water-retaining test is easy to fluctuate, and the deviation of the test result is caused.

Description

A temperature-controlled concrete vacuum water retention instrument

technical field

The utility model relates to the technical field of concrete, in particular to a temperature-controlled concrete vacuum water retention instrument.

Background technique

The concrete vacuum water retention instrument is used to pretreat the test block in the concrete electric flux test and the concrete diffusion coefficient test. The effect of the test block treatment in this link directly affects the test results of the concrete electric flux test and the concrete diffusion coefficient test.

In order to ensure the effect of the test block treatment, the water retention test needs to meet certain pressure and temperature requirements. For example, in the prior art, the Chinese utility model patent with the patent application number CN201921042075.0 proposes a concrete vacuum water retention machine. The scheme can be sealed and connected with the vacuum water-holding barrel cover through the setting of the suction device and the water-inlet device. When carrying out the vacuum water-holding experiment, the air pressure in the vacuum water-holding barrel can meet the experimental requirements; Adjustment, the temperature of the water retention test is greatly affected by the external environment temperature, and it is easy to cause fluctuations in the temperature of the water retention test, resulting in deviations in the test results.

Therefore, the concrete vacuum water retention machine in the prior art cannot adjust the temperature of the water retention test, and the temperature of the water retention test is greatly affected by the external environment temperature, which easily causes fluctuations in the temperature of the water retention test, thereby causing deviations in the test results.

Utility model content

In view of this, it is necessary to provide a temperature-controlled concrete vacuum water retention instrument to solve the problem that the concrete vacuum water retention machine in the prior art cannot adjust the temperature of the water retention test, and the temperature of the water retention test is greatly affected by the external environment temperature. It is easy to make the temperature of the water retention test fluctuate, which will lead to the problem of deviation of the test results.

The utility model provides a temperature-controlled concrete vacuum water retention instrument, which includes a sample container and a water bath temperature adjustment assembly. The sample container has an accommodating cavity for placing a test block, and the accommodating cavity maintains a negative pressure. state, the side wall of the sample container is provided with a first water inlet and a first water outlet that communicate with the accommodating cavity, and the water bath temperature adjustment assembly includes a water tank, a heating refrigerator, a water pump, a circulating water inlet pipe, and a circulating outlet Water pipes and liquid level valves, the heating refrigerator and the water pump are fixedly installed in the water tank, the heating refrigerator can heat or cool the water in the water tank, and the water pump is connected to the water tank With the circulating water inlet pipe, the end of the circulating water inlet pipe far away from the water pump communicates with the first water outlet, the circulating water outlet pipe communicates with the water tank and the first water inlet, and the liquid level valve Set in the circulation outlet pipe.

Further, the sample container has a sealing cover, the upper end of the sample container is open, and the sealing cover can seal the opening of the upper end of the sample container.

Further, a handle and an air release valve are fixedly arranged on the sealing cover, and the air release valve can communicate with the external atmosphere and the accommodating cavity.

Further, the water tank is provided with a second water inlet and a second water outlet, the second water inlet communicates with an external water supply pipeline, and the second water outlet communicates with an external drain pipeline.

Further, the side wall of the sample container is set toward the depression away from its axis to form a pipeline groove, the end of the circulating water inlet pipe away from the water tank extends into the pipeline groove, and the liquid level valve is located in the pipeline groove. in the conduit duct.

Further, the above-mentioned temperature-controlled concrete vacuum water retention instrument also includes a hollow casing, and a first installation port and a second installation port are opened on the casing, and the sample container and the water tank are embedded and fixed respectively. in the first installation port and the second installation port.

Further, the outer peripheral wall of the sample container is sealed and fixed to the inner peripheral wall of the first installation port, and the sealing cover can be sealed and fixedly connected with the housing at the position of the first installation port to close the sample container. Opening at the top of the sample container.

Further, a vacuum pump is fixedly arranged in the housing, the vacuum pump is fixed in the housing, and communicated with the pipeline groove through a vacuum tube.

Further, the side wall of the housing close to the water tank has a water injection valve, a drain valve and a power interface, one end of the water injection valve is connected to the second water inlet, the other end is connected to the external water supply pipeline, and one end of the drain valve is connected to the The other end of the second water outlet is connected to an external drainage pipeline, one end of the power supply interface is electrically connected to the heating refrigerator, and the other end is electrically connected to an external circuit.

Further, it also includes a control assembly, the control assembly includes a first temperature sensor, a pressure sensor, a second temperature sensor and a control panel, the first temperature sensor and the pressure sensor are fixedly arranged in the accommodating cavity Inside, the second temperature sensor is fixedly arranged in the water tank, the control panel is fixedly arranged on the side wall of the housing, the control panel is connected with the first temperature sensor, the second temperature sensor, the heating The refrigerator, the water pump and the vacuum pump are electrically connected.

Compared with the prior art, the utility model provides a temperature-controlled concrete vacuum water retention instrument, through the structure of the water tank, heating refrigerator, water pump, circulating water inlet pipe, circulating water outlet pipe and liquid level valve in the water bath temperature adjustment assembly. Set up to realize the circulating flow of water between the water tank and the sample container. The temperature of the water in the water tank can be properly adjusted by heating the refrigerator, and then the temperature in the sample container can be adjusted through the circulating flow of the water to keep the temperature of the water retention test relatively high. Stable and reduce its impact from the external environment.

Description of drawings

Fig. 1 is the whole structure schematic diagram in this embodiment of a temperature-controlled concrete vacuum water retention instrument provided by the utility model;

Fig. 2 is a schematic structural view of the sample container and the water bath temperature adjustment assembly in an embodiment of the temperature-controlled concrete vacuum water retention instrument provided by the present invention;

Fig. 3 is a structural schematic diagram of the pipeline trough in an embodiment of the temperature-controlled concrete vacuum water retention instrument provided by the utility model.

In the figure: 1. Sample container; 2. Water bath thermostat assembly; 3. Shell; 4. Vacuum pump; 5. Control panel; 11. Accommodating cavity; 12. First water inlet; 13. First water outlet ; 14, sealing cover; 15, pipeline groove; 21, water tank; 211, second water inlet; 212, second water outlet; 22, heating refrigerator; 23, water pump; 24, circulating water inlet pipe, 25, circulating water outlet pipe ; 26, liquid level valve; 31, the first installation port; 32, the second installation port; 33, water injection valve; 34, drain valve; 35, power interface; 41, vacuum tube.

Detailed ways

The preferred embodiments of the utility model are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the utility model to explain the principle of the utility model and are not used to limit the scope of the utility model scope.

As shown in Figures 1-3, a temperature-controlled concrete vacuum water retention instrument in this embodiment includes a sample container 1 and a water bath temperature adjustment assembly 2, and the sample container 1 has an accommodating space for placing a test block. Cavity 11, the pressure in the accommodating cavity 11 is lower than atmospheric pressure, the side wall of the sample container 1 is provided with a first water inlet 12 and a first water outlet 13 communicating with the accommodating cavity 11, and the water bath thermostat assembly 2 includes a water tank 21, The heating refrigerator 22, the water pump 23, the circulating water inlet pipe 24, the circulating water outlet pipe 25 and the liquid level valve 26, the heating refrigerator 22 and the water pump 23 are all fixedly arranged in the water tank 21, and the heating refrigerator 22 can carry out the water body in the water tank 21. For heating or cooling, the water pump 23 is connected to the water tank 21 and the circulating water inlet pipe 24, and the end of the circulating water inlet pipe 24 far away from the water pump 23 is connected to the first water outlet 13, and the circulating water outlet pipe 25 is connected to the water tank 21 and the first water inlet 12. The valve 26 is arranged on the circulating water outlet pipe 25 .

Wherein, the sample container 1 is a container for carrying out a vacuum water retention test, and the sample container 1 has an accommodating cavity 11 for placing a test block. When performing a vacuum water retention test, the accommodating cavity 11 is vacuumized, and the Its internal pressure is adjusted to the test pressure set by the vacuum water retention test. The first water inlet 12 and the first water outlet 13 communicating with the accommodation cavity 11 are opened on the side wall of the sample container 1. Through the first water inlet 12 The arrangement with the first water outlet 13 provides access for the circulation of the water body in the cavity 11; the water bath temperature adjustment assembly 2 is a temperature adjustment mechanism for adjusting the water body in the sample container 1 and the test environment, and the water bath temperature adjustment assembly 2 It includes a water tank 21, a heating refrigerator 22, a water pump 23, a circulating water inlet pipe 24, a circulating water outlet pipe 25 and a liquid level valve 26. The water tank 21 is used to store water and communicate with the sample container 1. By connecting the water tank 21 and the sample container The circulation of the water body in 1, to achieve the adjustment is the temperature of the water body in the sample container 1 and the temperature of the test environment; the heating and cooling device 22 is fixedly arranged in the water tank 21, and can heat or cool the water body in the water tank 21, so that it can be used in the external environment. When the temperature drops or rises, by heating or cooling the water body in the water tank 21, when the water body in the water tank 21 is circulated into the sample container 1, the stability of the temperature in the sample container 1 can be maintained; The water body in the accommodation cavity 11 set by pressure is sucked into the water tank 21, and the water pump 23 sucks the water body in the accommodation cavity 11 through the circulating water inlet pipe 24. One end of the water inlet pipe communicates with the first water outlet 13, and the other end It communicates with the water pump 23, and the water pump 23 is fixedly arranged in the water tank 21, and directly discharges the sucked water body into the water tank 21; the circulation outlet pipe 25 is used to introduce the water body in the water tank 21 into the accommodation cavity 11, due to the accommodation The cavity 11 is in a negative pressure state, and there is no need to install a pumping device on the circulating water outlet pipe 25; the liquid level valve 26 is a structure used to control the connection or disconnection of the internal delivery channel of the circulating water outlet pipe 25, and the liquid level in the sample container 1 reaches When setting the height, the liquid level valve 26 is closed to prevent the water body in the water tank 21 from continuing to be transported to the sample container 1 through the circulating outlet pipe 25, so as to prevent the water body in the water tank 21 from flowing into the sample container 1 too much. When the liquid level drops below the set liquid level, the liquid level valve 26 is opened, and the water body in the water tank 21 continues to flow towards the sample container 1, so as to maintain a relatively stable state of the liquid level in the sample container 1; through the setting of the above structure, The water body in the water tank 21 and the sample container 1 can be circulated and exchanged, and the temperature of the water body in the sample container 1 and the test temperature can be indirectly regulated by controlling the temperature of the water body in the water tank 21, so as to keep the temperature in the sample container 1 relatively stable. , to reduce its impact by the external environment, so that the results of the vacuum water retention test are more accurate.

In the present embodiment, the sample container 1 is a container for vacuum water retention test, and the sample container 1 has an accommodating cavity 11 for placing the test block. The structure of the sample container 1 has been improved.

In order to facilitate the taking and placing of the test piece, in a preferred embodiment, as shown in Figure 1-2, the sample container 1 has a sealing cover 14, the upper end of the sample container 1 is open, and the sealing cover 14 can seal the sample container 1 opening on the upper face.

Wherein, the opening on the upper end surface of the sample container 1 is provided for the convenience of taking and placing the test block. The opening is closed.

In order to facilitate taking out the test piece, in a preferred embodiment, a handle and an air release valve (not shown in the figure) are fixedly arranged on the sealing cover 14 , and the air release valve can communicate with the external atmosphere and the accommodating cavity 11 .

Among them, the setting of the handle and the air release valve are all for the convenience of opening the sealing cover 14 after the end of the test. After the end of the vacuum water retention test, the external environment can be connected with the inside of the sample container 1 through the air release valve to balance the pressure, so that it can be easily opened. Seal the lid 14, and take out the sample container 1.

In this embodiment, the water bath temperature adjustment assembly 2 is a temperature adjustment mechanism for adjusting the water body in the sample container 1 and the test environment. The water bath temperature adjustment assembly 2 includes a water tank 21, a heating refrigerator 22, a water pump 23, and a circulating water inlet pipe 24 , the circulation outlet pipe 25 and the liquid level valve 26, the adjustment of the temperature of the water body of the water tank 21 and the effect of circulating with the water body in the sample container 1 are realized through the above-mentioned structural settings, so as to achieve the purpose of regulating the temperature in the sample container 1. To better achieve the above effects, the water bath temperature adjustment assembly 2 is optimized in the following embodiments.

In order to facilitate water filling and drainage of the water tank 21, in a preferred embodiment, as shown in Figure 2, the water tank 21 is provided with a second water inlet 211 and a second water outlet 212, and the second water inlet 211 and the external water supply pipeline The second water outlet 212 communicates with the external drainage pipeline.

Wherein, through the setting of the second water inlet 211 and the second water outlet 212, the work of adding water to the water tank 21 can be completed before the vacuum water retention test, and the draining work of the water tank 21 can also be completed after the vacuum water retention test is completed.

It can be understood that, in order to facilitate adding water to the water tank 21, the end face of the water tank 21 can also be provided with an opening. The cover body is a structure that can be easily imagined by those skilled in the art, and will not be repeated here.

In order to improve the space utilization rate of the accommodating cavity 11, in a preferred embodiment, as shown in FIG. The end away from the water tank 21 extends into the pipeline groove 15 , and the liquid level valve 26 is located in the pipeline groove 15 .

Wherein, the pipeline groove 15 is connected with the accommodation cavity 11, and the upper and lower ends of the pipeline groove 15 are closed. The pipeline groove 15 is set to reduce the space occupied by various pipelines and the liquid level valve 26. The internal volume of the provided pipeline tank 15 is small, so as to avoid excessively increasing the volume of the water body in the sample container 1 , resulting in a slowdown of the temperature control speed in the sample container 1 .

In a preferred embodiment, the temperature-controlled concrete vacuum water retention instrument also includes a hollow housing 3, the housing 3 is provided with a first installation port 31 and a second installation port 32, and the sample container 1 and The water tank 21 is respectively embedded and fixed in the first installation opening 31 and the second installation opening 32 .

Wherein, the setting of the shell 3 is used to integrate and install other structures, so that the temperature-controlled concrete vacuum water retention instrument forms an integral structure, which is convenient to use and move.

It can be understood that, in order to place the temperature-controlled concrete vacuum water retention instrument stably and adjust its installation height, a plurality of height-adjustable support feet can also be arranged on the bottom surface of the casing 3, and the support feet can be connected with the casing 3 through a threaded rod. The bottom surface is threaded and fixed, and the distance between the supporting foot and the bottom surface of the housing 3 is adjusted by screwing in and out of the threaded rod to achieve the effect of adjusting the installation height of the equipment. The above-mentioned supporting foot and threaded rod are structures that are easily imagined by those skilled in the art , so I won’t go into too much detail here.

In order to achieve the sealing effect on the sample container 1, in a preferred embodiment, as shown in Figure 1, the outer peripheral wall of the sample container 1 is sealed and fixed with the inner peripheral wall of the first installation port 31, and the sealing cover 14 can be connected with the housing 3 The position of the first installation port 31 is sealed and fixedly connected to close the opening at the upper end of the sample container 1 .

Wherein, the housing 3 is provided with a plurality of bolt holes along the circumference on the outer periphery of the first installation port 31 and the sealing cover 14, and the bolt holes on the housing 3 are set in one-to-one correspondence with the bolt holes on the sealing cover 14. A sealing ring is placed between the housing 3 and the sealing cover 14, and a plurality of bolt holes are also provided on the sealing ring. By setting a plurality of bolts, the bolts correspond to the bolt holes on the sealing cover 14 one by one, and pass through the sealing ring in turn. The bolt holes on the cover 14, the sealing gasket and the housing 3 are threaded to fix the bolts to the threaded holes on the housing 3, so that the sealing cover 14 and the sealing gasket are pressed and fixed on the housing 3 on the outer periphery of the first installation port 31 In order to achieve the effect of sealing the first installation port 31, the structures of the above-mentioned bolts and sealing rings are not shown in the figure, which are conventional sealing structures easily imagined by those skilled in the art, and will not be repeated here.

In order to maintain the negative pressure state in the housing cavity 11, in a preferred embodiment, as shown in Figure 2, a vacuum pump 4 is also fixedly arranged in the housing 3, the vacuum pump 4 is fixed in the housing 3, and the vacuum pump 4 passes through A vacuum tube 41 communicates with the pipeline groove 15 .

Wherein, one end of the vacuum tube 41 is communicated with the vacuum pump 4, and the other end is communicated with the pipeline groove 15. Since the pipeline groove 15 is communicated with the accommodation cavity 11, when the vacuum pump 4 is vacuuming, the accommodation cavity 11 and the pipeline groove 15 are evenly connected. under negative pressure.

In order to realize the connection of each device in the housing 3 with external pipelines and circuits, in a preferred embodiment, the side wall of the housing 3 near the water tank 21 has a water filling valve 33, a drain valve 34 and a power interface 35, and the water filling valve One end of 33 is connected to the second water inlet 211, the other end is connected to the external water supply pipeline, one end of the drain valve 34 is connected to the second water outlet 212, and the other end is connected to the external drainage pipeline, one end of the power interface 35 is electrically connected to the heating refrigerator 22, and the other end It is electrically connected with the external circuit.

In order to facilitate the control of the temperature in the sample container 1, in a preferred embodiment, the above-mentioned temperature-controlled concrete vacuum water retention instrument also includes a control assembly, the control assembly includes a first temperature sensor, a pressure sensor, a second temperature sensor (not shown) Shown in the figure) and the control panel 5, the first temperature sensor and the pressure sensor are fixedly arranged in the accommodating cavity 11, the second temperature sensor is fixedly arranged in the water tank 21, and the control panel 5 is fixedly arranged on the side of the housing 3 On the wall, the control panel 5 is electrically connected with the first temperature sensor, the second temperature sensor, the heating refrigerator 22 , the water pump 23 and the vacuum pump 4 .

Wherein, the temperature and pressure in the sample container 1 can be detected in real time by the first temperature sensor and the pressure sensor. When the detected temperature is inconsistent with the set temperature of the control panel 5, the control panel 5 automatically turns on the water pump 23 and the liquid level valve 26 to carry out water Body circulation, and automatically control the heating refrigerator 22 to heat or cool the water body, at the same time, set the pressure in the sample container 1 through the control panel 5, when the pressure rises, the controller controls the vacuum pump 4 to open, so that the pressure in the sample container 1 Keep stable, and when the pressure drops to the set value, then turn off the vacuum pump 4. Through the setting of the above structure, the temperature and pressure in the sample container 1 can be automatically controlled, so that the sample conditions can be kept in a relatively stable state, increasing the accuracy of the test results. accuracy.

Compared with the prior art: a temperature-controlled concrete vacuum water retention instrument provided by the utility model, through the water tank 21 in the water bath temperature adjustment assembly 2, the heating refrigerator 22, the water pump 23, the circulating water inlet pipe 24, and the circulating water outlet pipe 25 And the structural setting of the liquid level valve 26 realizes the circulating flow of the water body between the water tank 21 and the sample container 1, the temperature of the water body in the water tank 21 can be properly adjusted by heating the refrigerator 22, and then the sample container can be adjusted through the circulating flow of the water body 1, keep the temperature of the water retention test relatively stable, and reduce its influence from the external environment.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model.

Claims (10)

1. The temperature control type concrete vacuum water retention instrument is characterized by comprising a sample container and a water bath temperature regulation component;

the sample container is provided with a containing cavity for placing a test block, the containing cavity is kept in a negative pressure state, and the side wall of the sample container is provided with a first water inlet and a first water outlet which are communicated with the containing cavity;

the water bath temperature adjusting assembly comprises a water tank, a heating refrigerator, a water pump, a circulating water inlet pipe, a circulating water outlet pipe and a liquid level valve, wherein the heating refrigerator and the water pump are fixedly arranged in the water tank, the heating refrigerator can heat or refrigerate water in the water tank, the water pump is communicated with the water tank and the circulating water inlet pipe, the circulating water inlet pipe is far away from one end of the water pump and is communicated with the first water outlet, the circulating water outlet pipe is communicated with the water tank and the first water inlet, and the liquid level valve is arranged in the circulating water outlet pipe.

2. A temperature-controlled concrete vacuum water retention meter according to claim 1, wherein the sample container has a sealing cap, the upper end face of the sample container is open, and the sealing cap seals the opening of the upper end face of the sample container.

3. The temperature-control type concrete vacuum water-retaining instrument according to claim 2, wherein a handle and a deflation valve are fixedly arranged on the sealing cover, and the deflation valve can be communicated with the external atmosphere and the accommodating cavity.

4. A temperature-controlled concrete vacuum water retention meter according to any one of claims 2-3, wherein the water tank is provided with a second water inlet and a second water outlet, the second water inlet is communicated with an external water supply pipeline, and the second water outlet is communicated with an external water discharge pipeline.

5. A temperature-controlled concrete vacuum water retention meter according to claim 4, wherein the side wall of the sample container is recessed away from the axis thereof to form a line groove, wherein the end of the circulating water inlet pipe away from the water tank extends into the line groove, and wherein the liquid level valve is located in the line groove.

6. The temperature-controlled concrete vacuum water-holding instrument according to claim 5, further comprising a hollow shell, wherein the shell is provided with a first mounting opening and a second mounting opening, and the sample container and the water tank are respectively embedded and fixed in the first mounting opening and the second mounting opening.

7. The temperature-controlled concrete vacuum water-holding instrument according to claim 6, wherein the outer peripheral wall of the sample container is sealed and fixed with the inner peripheral wall of the first mounting opening, and the sealing cover is sealed and fixedly connected with the housing at the position of the first mounting opening so as to close the opening at the upper end of the sample container.

8. The temperature-controlled concrete vacuum water-holding instrument according to claim 7, wherein a vacuum pump is fixedly arranged in the shell, the vacuum pump is fixed in the shell, and the vacuum pump is communicated with the pipeline groove through a vacuumizing tube.

9. The temperature-controlled concrete vacuum water-holding instrument according to claim 8, wherein the side wall of the shell, which is close to the water tank, is provided with a water injection valve, a water discharge valve and a power interface, one end of the water injection valve is communicated with the second water inlet, the other end of the water injection valve is communicated with an external water supply pipeline, one end of the water discharge valve is communicated with the second water outlet, the other end of the water discharge valve is communicated with an external water discharge pipeline, one end of the power interface is electrically connected with the heating refrigerator, and the other end of the power interface is electrically connected with an external circuit.

10. The temperature-controlled concrete vacuum water-holding instrument according to claim 9, further comprising a control assembly, wherein the control assembly comprises a first temperature sensor, a pressure sensor, a second temperature sensor and a control panel, the first temperature sensor and the pressure sensor are fixedly arranged in the accommodating cavity, the second temperature sensor is fixedly arranged in the water tank, the control panel is fixedly arranged on the side wall of the shell, and the control panel is electrically connected with the first temperature sensor, the second temperature sensor, the heating refrigerator, the water pump and the vacuum pump.

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