System for rapidly preparing, transporting, storing and recycling degassed water

Abstract

The utility model discloses a system for rapidly preparing, transporting, storing and recycling degassed water, which comprises a vacuum pump, a vacuum cylinder, a water tank and a triaxial apparatus, the vacuum pump is sequentially connected with a drying pipe, a pressure regulating valve, a pipeline pressure gauge and a tee joint through air pipes, one of the other two paths of the tee joint is connected with the vacuum cylinder through an air pipe and is provided with a vacuum cylinder end vent valve, and the other path of the tee joint is provided with a vacuum cylinder end vent valve. The other path is connected with the water tank through an air pipe and is provided with a water tank end vent valve; the bottom of the water tank is connected with two water pipes, one water pipe is communicated with the bottom of the vacuum cylinder, a water tank water injection valve is arranged at one end close to the water tank, a vacuum cylinder drainage valve is arranged at one end close to the vacuum cylinder, and the other water pipe is communicated with the triaxial apparatus, and a water tank water passing valve is arranged at one end close to the water tank. According to the utility model, convenient preparation, rapid migration and long-term storage of the degassed water can be realized, the triaxial test efficiency and precision are improved, the use of the degassed water in the triaxial test is facilitated, and the degassed water after the test can be recycled.

Description

Technical Field

[0001] The utility model belongs to the technical field of rock and soil triaxial testing, and in particular relates to a system for rapid preparation, transportation, storage and recycling of degassed water. Background Art

[0002] In geotechnical laboratory tests, the triaxial apparatus is a common instrument used to conduct various conventional tests, such as the consolidation drained shear test and the consolidation undrained shear test. It is mainly used to determine the shear strength index, deformation characteristics, pore water pressure and other parameters of the soil. The triaxial apparatus is generally composed of a loading frame, a pressurization system, a collection and measurement system and other parts. In the pressurization system, degassed water is a commonly used medium for applying pressure, which is often used to control the pressure inside and outside the specimen, that is, the confining pressure and back pressure in the test. In triaxial tests, most of the operations are related to degassed water, such as the saturation, consolidation, and shearing processes of the specimen. During the test, after the sample is loaded, the pressure chamber needs to be filled with degassed water, and confining pressure is applied to the soil sample through the pressurization system; when saturated, degassed water is injected into the sample, and the sample is required to reach a certain degree of saturation; during consolidation, the degassed water needs to be controlled to maintain the pressure difference between the inside and outside of the sample as the consolidation pressure of the sample; finally, the lifting platform of the loading frame is driven to rise slowly at a set speed to apply axial deviation stress to the sample. The sample is deformed and destroyed under the action of the axial deviation stress applied by the loading frame and the effective confining pressure controlled by the degassed water. The various data in the test are recorded by the acquisition and measurement system, and processed and analyzed to obtain the required parameters such as the shear strength of the sample.

[0003] As an important material and force medium for triaxial test, degassed water is mainly involved in the process of filling the pressure chamber with water and saturating the water head. In addition, degassed water is a consumable in triaxial test. After a period of use, the quality of degassed water will deteriorate after repeated contact with air, and the growth of microorganisms in the water environment will cause water pollution, which prompts the degassed water to be replaced frequently. The above problems put forward requirements for the storage and transportation and replenishment methods of degassed water. Conventional tests are to store degassed water in a water tank and place it at a high place, and use the head pressure difference to inject degassed water into the pressure chamber. This method can realize automatic and continuous water filling of the pressure chamber, but because the water tank is placed at a high place, it is inconvenient to replace the degassed water. In addition, in the process of replenishing water, the direct pouring method is often used, that is, pouring the prefabricated degassed water into the water tank to replenish the degassed water, but in the process of pouring, the degassed water collides with the container to stir up a lot of water splashes and involve a lot of bubbles, resulting in a decrease in the quality of the degassed water. At present, there is no convenient method for the rapid preparation, replacement and transportation of degassed water. How to integrate the processing of degassed water from preparation, transportation, storage to final use is a question worth considering. Utility Model Content

[0004] The purpose of the utility model is to provide a system for quickly preparing, transporting, storing and recycling degassed water, thereby effectively improving the quality of degassed water, facilitating the use of degassed water in triaxial testing, and improving the overall efficiency and accuracy of triaxial testing.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a system for rapid preparation, transportation, storage and recycling of degassed water, comprising a vacuum pump, a vacuum cylinder, a water tank and a triaxial instrument, wherein the vacuum pump is connected to a drying tube, a pressure regulating valve, a pipeline pressure gauge and a tee in sequence through an air pipe, one of the other two paths of the tee is connected to the vacuum cylinder through an air pipe and is provided with a vent valve at the vacuum cylinder end, and the other path is connected to the water tank through an air pipe and is provided with a vent valve at the water tank end;

[0006] Two water pipes are connected to the bottom of the water tank, one of which is connected to the bottom of the vacuum cylinder, and a water tank filling valve is provided at one end close to the water tank, and a vacuum cylinder drain valve is provided at one end close to the vacuum cylinder; the other water pipe is connected to the triaxial instrument, and a water tank water valve is provided at one end close to the water tank.

[0007] As a further solution of the utility model: a soundproof cover is provided on the outside of the vacuum pump, a handle is provided on the top of the soundproof cover, and a perforation is provided on the side.

[0008] As a further solution of the utility model: the vacuum cylinder includes a cylinder body and a cylinder cover, a water pipe is connected to the bottom of the cylinder body, a vacuum cylinder pressure gauge, a vacuum cylinder ventilation valve and a vacuum cylinder exhaust valve connected to the air pipe are arranged on the cylinder cover, and a sealing rubber sleeve is wrapped around the cylinder cover.

[0009] As a further solution of the utility model: the water tank includes a box body and a box cover, two water pipes are symmetrically connected to the bottom of the box body, a water tank air extraction valve connected to the air pipe is provided on the box cover, a semicircular ring groove is correspondingly provided at the connection between the box body and the box cover, and a circular rubber sealing ring is placed.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] Two water pipes are set at the bottom of the water tank, which are connected to the vacuum cylinder and the triaxial instrument respectively. The vacuum pump connected by the air pipe can realize the mutual transfer of degassed water in the water tank, the degassed water in the triaxial instrument and the degassed water in the vacuum cylinder, thereby reducing excessive contact with the outside air; at the same time, the degassed water in the triaxial instrument can be recovered and returned to the water tank, and then sent to the vacuum cylinder from the water tank for re-preparation, so as to realize the regeneration of degassed water and improve the quality of degassed water, facilitate the use of degassed water in the triaxial test, and improve the overall efficiency and accuracy of the triaxial test; in addition, installing a sound insulation cover on the vacuum pump can reduce the noise caused by the operation of the vacuum pump and optimize the laboratory environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Figure 2 It is a side view schematic diagram of the sound insulation cover in the utility model.

[0014] Figure 3 It is a structural schematic diagram of the vacuum cylinder in the utility model.

[0015] Figure 4 It is a structural schematic diagram of the water tank in the utility model.

[0016] In the figure: 1, vacuum pump, 2, soundproof cover, 3, drying tube, 4, pressure regulating valve, 5, pipeline pressure gauge, 6, tee, 7, vent valve at vacuum cylinder end, 8, vent valve at water tank end, 9, vacuum cylinder, 10, water tank, 11, triaxial instrument;

[0017] 1.1, Power cord;

[0018] 2.1, handle, 2.2, perforation;

[0019] 9.1, cylinder body, 9.2, cylinder head, 9.3, sealing rubber sleeve, 9.4, vacuum cylinder exhaust valve, 9.5, vacuum cylinder pressure gauge, 9.6, vacuum cylinder ventilation valve, 9.7, vacuum cylinder drain valve;

[0020] 10.1. Box body; 10.2. Box cover; 10.3. Water tank air extraction valve; 10.4. Round rubber sealing ring; 10.5. Water tank filling valve; 10.6. Water tank water valve. DETAILED DESCRIPTION

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] like Figure 1 , Figure 3 and Figure 4 As shown, a system for rapid preparation, transportation, storage and recycling of degassed water comprises a vacuum pump 1, a vacuum cylinder 9, a water tank 10 and a triaxial apparatus 11. The vacuum pump 1 is connected to a drying tube 3, a pressure regulating valve 4, a pipeline pressure gauge 5 and a tee 6 in sequence through an air pipe. One of the other two routes of the tee 6 is connected to the vacuum cylinder 9 through an air pipe and is provided with a vacuum cylinder end vent valve 7, and the other route is connected to the water tank 10 through an air pipe and is provided with a water tank end vent valve 8;

[0023] Two water pipes are connected to the bottom of the water tank 10, one of which is connected to the bottom of the vacuum cylinder 9, and a water tank filling valve 10.5 is provided at one end close to the water tank 10, and a vacuum cylinder drain valve 9.7 is provided at one end close to the vacuum cylinder 9, and the other water pipe is connected to the triaxial instrument 11, and a water tank water valve 10.6 is provided at one end close to the water tank 10.

[0024] The pressure in the trachea is adjusted by the vacuum pump 1, so that the degassed water in the vacuum cylinder 9, the water tank 10 and the triaxial apparatus 11 can be transported to each other as needed, effectively reducing excessive contact between the degassed water and the outside air.

[0025] Noise is generated during the operation of the vacuum pump 1. In order to reduce the impact of the noise on the laboratory environment, further, such as Figure 2 As shown, a soundproof cover 2 is provided on the outside of the vacuum pump 1, a handle 2.1 is provided on the top of the soundproof cover 2, and a perforation 2.2 is provided on the side. The perforation 2.2 is used for passing the power cord 1.1 and the water pipe of the vacuum pump 1. In actual use, a sponge pad can also be placed at the bottom of the vacuum pump 1 to absorb vibration and improve the noise reduction effect.

[0026] In order to ensure the effect of the vacuum cylinder 9, further, Figure 3 As shown, the vacuum cylinder 9 includes a cylinder body 9.1 and a cylinder cover 9.2. A water pipe is connected to the bottom of the cylinder body 9.1. The cylinder cover 9.2 is provided with a vacuum cylinder pressure gauge 9.5, a vacuum cylinder vent valve 9.6 and a vacuum cylinder exhaust valve 9.4 connected to the air pipe. The cylinder cover 9.2 is surrounded by a sealing rubber sleeve 9.3. The cylinder body 9.1 is made of stainless steel to improve the overall structural strength. The cylinder cover 9.2 is made of transparent organic glass to facilitate observation of the situation in the vacuum cylinder 9. The cylinder body 9.1 and the cylinder cover 9.2 are sealed under the action of the sealing rubber sleeve 9.3 to ensure the sealing effect and prevent air leakage during vacuuming.

[0027] In order to ensure the effect of the water tank 10, further, as Figure 4 As shown, the water tank 10 comprises a box body 10.1 and a box cover 10.2, two water pipes are symmetrically connected to the bottom of the box body 10.1, the box cover 10.2 is provided with a water tank air extraction valve 10.3 connected to the air pipe, and a semicircular ring groove is correspondingly provided at the connection between the box body 10.1 and the box cover 10.2, and a circular rubber sealing ring 10.4 is placed. Since the water tank 10 is usually placed at a high place in actual use, the box body 10.1 and the box cover 10.2 are made of transparent organic glass, which can facilitate observation of the situation in the water tank 10.

[0028] When the utility model is used in practice, after the vacuum pump 1 is powered on through its power cord 1.1, air is evacuated from the system. The drying pipe 3 connected to the air pipe path can prevent water vapor in the system from being sucked into the vacuum pump 1 by negative pressure, thereby preventing the molding equipment from being damaged. The pressure regulating valve 4 is adjusted by observing the indication of the pipeline pressure gauge 5, thereby controlling the negative pressure in the subsequent equipment.

[0029] When deaerated water needs to be prepared, the appropriate pressure is controlled by the pressure regulating valve 4, which is generally one atmosphere, i.e. 100 kPa. Then the vacuum cylinder end vent valve 7 and the vacuum cylinder exhaust valve 9.4 are opened, and the vacuum cylinder vent valve 9.6 and the vacuum cylinder drain valve 9.7 are closed. The boiled water in the vacuum cylinder 9 is evacuated for half an hour to obtain deaerated water.

[0030] The water tank 10 is conventionally placed at a high place. After the degassed water is prepared in the vacuum cylinder 9, the degassed water needs to be transported and stored in the water tank 10. The negative pressure is controlled between 30-40 kPa by the pressure regulating valve 4, and the vacuum cylinder end vent valve 7, the vacuum cylinder exhaust valve 9.4, and the vacuum cylinder drain valve 9.7 are closed. The water tank end vent valve 8 and the water tank exhaust valve 10.3 are opened. When the pressure in the water tank 10 is stable, the water tank filling valve 10.5, the vacuum cylinder drain valve 9.7, and the vacuum cylinder vent valve 9.6 are opened to allow the prepared degassed water to be transported from the vacuum cylinder 9 to the water tank 10 under the action of atmospheric pressure. When the degassed water in the water tank 10 reaches four-fifths of the height of the entire water tank 10 or the degassed water level in the vacuum cylinder 9 is about to be lower than the vacuum cylinder drain valve 9.7, the vacuum cylinder drain valve 9.7 is closed, and the vacuum pump 1 is turned off to stop exhausting, thereby completing the transport of the degassed water.

[0031] When conducting the triaxial test, open the water tank water valve 10.6 to inject water into the pressure chamber of the triaxial apparatus 11 and the specimen as needed. After the triaxial test, start the vacuum pump 1 again, adjust the pressure regulating valve 4 to maintain the reading of the pipeline pressure gauge 5 between 30-40 kPa, close the vacuum cylinder drain valve 9.7, isolate the connection between the water tank 10 and the vacuum cylinder 9, and then open the water tank end vent valve 8 and the water tank exhaust valve 10.3 to allow the degassed water in the triaxial apparatus 11 to migrate back to the water tank 10 under the action of atmospheric pressure. Stop exhausting after the migration is completed.

[0032] After being used, degassed water will inevitably come into contact with air, and the quality of degassed water will deteriorate over time. Therefore, after the degassed water returns to the water tank 10, the vacuum cylinder vent valve 9.6, the vacuum cylinder drain valve 9.7, and the water tank filling valve 10.5 can be opened. Since the water tank 10 is placed at a high position, the gravity of the degassed water can flow from the water tank 10 back into the vacuum cylinder 9, and then the above steps can be repeated to evacuate and prepare degassed water again.

Claims

1. A system for rapid preparation, transportation, storage and recycling of degassed water, comprising a vacuum pump (1), a vacuum cylinder (9), a water tank (10) and a triaxial apparatus (11), characterized in that: The vacuum pump (1) is connected to the drying pipe (3), the pressure regulating valve (4), the pipeline pressure gauge (5) and the tee (6) in sequence through an air pipe; one of the other two paths of the tee (6) is connected to the vacuum cylinder (9) through an air pipe and is provided with a vacuum cylinder end vent valve (7); the other path is connected to the water tank (10) through an air pipe and is provided with a water tank end vent valve (8); The bottom of the water tank (10) is connected to two water pipes, one of which is in communication with the bottom of the vacuum cylinder (9) and is provided with a water tank water filling valve (10.5) at one end close to the water tank (10), and a vacuum cylinder drain valve (9.7) at one end close to the vacuum cylinder (9), and the other water pipe is in communication with the triaxial instrument (11) and is provided with a water tank water valve (10.6) at one end close to the water tank (10).

2. The system for rapid preparation, transportation, storage and recycling of degassed water according to claim 1, characterized in that: A soundproof cover (2) is provided on the outside of the vacuum pump (1), a handle (2.1) is provided on the top of the soundproof cover (2), and a through hole (2.2) is provided on the side.

3. The system for rapid preparation, transportation, storage and recycling of deaerated water according to claim 1, characterized in that: The vacuum cylinder (9) comprises a cylinder body (9.1) and a cylinder cover (9.2); a water pipe is connected to the bottom of the cylinder body (9.1); a vacuum cylinder pressure gauge (9.5), a vacuum cylinder ventilation valve (9.6) and a vacuum cylinder air extraction valve (9.4) connected to the air pipe are arranged on the cylinder cover (9.2); and a sealing rubber sleeve (9.3) is wrapped around the cylinder cover (9.2).

4. The system for rapid preparation, transportation, storage and recycling of degassed water according to any one of claims 1 to 3, characterized in that: The water tank (10) comprises a tank body (10.1) and a tank cover (10.2), two water pipes are symmetrically connected to the bottom end of the tank body (10.1), a water tank air extraction valve (10.3) connected to an air pipe is provided on the tank cover (10.2), and a semicircular annular groove is correspondingly provided at the connection between the tank body (10.1) and the tank cover (10.2), and a circular rubber sealing ring (10.4) is placed.

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