CN210154970U - Dynamic water flow device for water-karst corrosion test - Google Patents
Dynamic water flow device for water-karst corrosion test Download PDFInfo
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- CN210154970U CN210154970U CN201921051150.XU CN201921051150U CN210154970U CN 210154970 U CN210154970 U CN 210154970U CN 201921051150 U CN201921051150 U CN 201921051150U CN 210154970 U CN210154970 U CN 210154970U
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Abstract
The utility model discloses a water-karst loses dynamic rivers device for experiment, including the constant voltage water tank, it has rivers stagnant water valve, dress appearance container, float flowmeter, flow rate control valve to establish ties on the outlet pipeline of constant voltage water tank, dress appearance container includes dress appearance section of thick bamboo and top cap, and it has the water inlet to open on the top cap, and it has the delivery port to open in dress appearance section of thick bamboo bottom, has placed sample screen frame in dress appearance container, sample screen frame is big end down's circular cone, opens the grid hole that communicates with the inner chamber on the lateral wall of circular cone, and the inner chamber of circular cone communicates with each other with the delivery port of dress appearance container; the experimental sample has been placed on the sample screen frame, the experimental sample is cylindrically, and the upper and lower end of experimental sample all adopts plastic film parcel, outlet conduit, dress appearance container, float flowmeter all adopt transparent material. The device can provide continuous and stable dynamic water flow for a water-karst corrosion test, so that the test process is closer to the real situation.
Description
Technical Field
The utility model relates to a test device, concretely relates to dynamic rivers device for simulating water-karst loses process.
Background
In the conventional water-rock corrosion test and the dry-wet test, static water corrosion is used as a research means, and the quality of the rock subjected to static water corrosion, the porosity of the rock, the content of corrosion liquid components, the corrosion amount, the solubility, the microstructure change, the mechanical state change and the like are measured and analyzed according to different research purposes. However, in reality, the water acts on the rock, mostly in a flowing form. In areas where groundwater is mostly replenished with seasonal rainwater, water-rock interaction often occurs under the combined action of water flow erosion and repeated wetting and drying. Therefore, the research mode of static water erosion, especially the research on the mechanical properties of the plaster-containing rock, has great limitation.
SUMMERY OF THE UTILITY MODEL
The utility model discloses plan to provide a water-karst loses experimental dynamic rivers device that uses, through dynamic water true simulation water-karst process of losing to confirm that quality, the porosity of rock, the erosion liquid composition content, the erosion volume, solubility, microstructure change, survey and analysis results such as mechanical state change of rock have more guiding value.
Therefore, the utility model discloses the technical scheme who adopts does: a dynamic water flow device for water-karst corrosion tests comprises a constant-pressure water tank, wherein a water flow stop valve, a sample container, a float flowmeter and a flow rate control valve are connected in series on a water outlet pipeline of the constant-pressure water tank, the sample container comprises a sample loading cylinder and a top cover, a water inlet is formed in the top cover, a water outlet is formed in the bottom of the sample loading cylinder, a sample filter screen frame is placed in the sample loading container, the sample filter screen frame is a cone frustum with a small upper part and a large lower part, a grid hole communicated with an inner cavity is formed in the side wall of the cone frustum, and the inner cavity of the cone frustum is communicated with the water outlet of the sample loading container; the experimental sample has been placed on the sample screen frame, the experimental sample is cylindrically, and the upper and lower end of experimental sample all adopts plastic film parcel, outlet conduit, dress appearance container, float flowmeter all adopt transparent material.
Preferably, the constant-pressure water tank comprises a water storage tank and a water level control valve, the water level control valve is installed at a water inlet at the top of the water storage tank, and a water purifier is connected to a water outlet of the water storage tank; the water storage tank is arranged on the shelf, so that the height of the water storage tank from the ground is 1.5-1.8m, and the sample container is lower than the water storage tank.
Preferably, the sample loading cylinder is screwed with the internal thread of the top cover through the external thread and is provided with a sealing ring to realize sealing; the aperture of the water inlet on the top cover is consistent with that of the water outlet at the bottom of the sample loading cylinder; the top cover is also provided with an air hole and is provided with a rubber soft plug for plugging in the test process.
Preferably, the constant pressure water tank has four water outlets arranged at equal intervals from left to right, each water outlet is provided with a water outlet pipeline, and each water outlet pipeline is connected with a water flow stop valve, a sample container, a float flowmeter and a flow rate control valve in series, so that dynamic water flow environment simulation tests of four test samples can be performed simultaneously.
Preferably, the four sample containers and the float flowmeters on the water outlet pipelines are fixedly arranged on the same support frame, the support frame is composed of a bottom plate, a vertical plate, a first horizontal mounting plate and a second horizontal mounting plate which are arranged at intervals from top to bottom and staggered from front to back, the sample containers on the four water outlet pipelines are sequentially arranged on the first horizontal mounting plate at intervals from left to right, and the float flowmeters on the four water outlet pipelines are sequentially arranged on the second horizontal mounting plate at intervals from left to right.
The utility model has the advantages that: the device can provide continuous and stable dynamic water flow for a water-rock corrosion test, so that the test process is closer to the real situation, and the device has important guiding significance for researching the mechanical properties of rocks after water-rock corrosion, particularly the mechanical properties of plaster-containing rocks.
Drawings
Fig. 1 is a front view of the present invention (without a sample screen frame and a test sample).
Fig. 2 is a left side view of fig. 1 (without the sample filter frame, test sample).
FIG. 3 is a schematic view of the direction of water flow in the sample container.
Fig. 4 is a diagram showing the effect of water flow vortex in the sample container.
Detailed Description
The invention will be further described by way of examples with reference to the accompanying drawings:
referring to fig. 1-4, the dynamic water flow device for the water-karst corrosion test mainly comprises a constant pressure water tank 1, a water flow stop valve 2, a sample container 3, a float flowmeter 4, a flow rate control valve 5, a sample filter screen frame 6, a test sample 7, a film package and a water outlet pipeline.
The constant pressure water tank 1 mainly comprises a water storage tank 1a and a water level control valve 1b and is mainly used for providing constant water flow speed for the whole set of dynamic water flow device.
The water level control valve 1b is installed at the water inlet at the top of the water storage tank 1a, and aims to provide stable flow rate for keeping the stable water level height in the water storage tank and for the dynamic water flow device, so that the water level of the water storage tank is not required to be manually maintained, and the test operation is simplified. A water purifier is connected at the water outlet of the water storage tank 1 a. Preferably, the American MC122-2 type portable water purifier is adopted, the filter element is made of carbon fiber, 5 layers of materials are combined for filtering water, the filtering precision is 2-40nm, silt and rust can be filtered, 96% of residual chlorine can be adsorbed, and the quality requirement of test water is ensured.
The water storage tank 1a is arranged on the shelf 8, so that the height of the water storage tank 1a from the ground is 1.5 m-1.8 m, and the sample container 3 is lower than the water storage tank 1 a. The constant pressure water tank provides sufficient water pressure by being placed at a height of 1.5-1.8m to ensure that the water flow can meet the design requirements.
This device can set up a plurality of experimental water routes simultaneously, shortens test time. The increase of test specimen causes the increase of test time, and this device adopts the same constant voltage water tank design of many waterways, and every waterway can simulate different velocity of flow environment respectively to can set up the water route number of different numbers according to the experimental design needs. The water outlet end of the waterway can also receive the solution corroded by the water flow, and the solution is researched. The whole set of device can realize the test requirements of multi-waterway conditions, multi-flow-rate control, flow-rate corrosion test, dissolution liquid sampling and the like. When the device is installed, the constant pressure water tank 1 can be simultaneously provided with 4 water outlet pipelines or more, and can simultaneously perform dynamic water flow environment simulation tests of four or more test samples 7 so as to save test time. Each water outlet pipeline of the constant pressure water tank 1 is connected in series with a water flow stop valve 2, a sample container 3, a float flowmeter 4 and a flow rate control valve 5. The water stop valve 2 is used for providing water flow of each waterway. Each waterway is provided with a flow rate control valve 5, so that independent control among the waterways can be realized, and a dynamic water flow test under the waterway can be controlled to start or stop at any time. The flow rate control valve 5 is used for controlling the flow rate of each waterway, is designed at the tail end of a single waterway, controls the water yield through the size of a switch, and is matched with a real-time flow value displayed by a float flowmeter to be observed, so that the flow rate in the whole waterway reaches the design flow rate requirement. The float flowmeter 4 is mainly used for observing the flow rate in the device in real time, can observe the flow rate condition in each water channel of the device at any time, is matched with a flow rate stop valve, can meet the flow rate requirement in a measuring range, and adopts a 6-60L/h plastic float flowmeter with the model of LZS-15C.
The effect of dress appearance container 3 is mainly in order to simulate the erosion effect of rivers on the rock, and the device can improve the contact effect of rivers and rock specimen, lets the rock reach and can soak in rivers, can receive the rivers scouring action again. The sample container 3 is composed of a sample cylinder 3a and a top cover 3 b. The top cover 3b is provided in order to facilitate the loading and unloading of the test specimen 7. The top cover 3b is provided with a water inlet, and the bottom of the sample containing cylinder 3a is provided with a water outlet. Preferably, the sample cylinder 3a is screwed together with the internal thread of the top cover 3b through external thread and is provided with a sealing ring for sealing; the closed design of the sample container can ensure that water flow fully contacts with the rock sample, and the rock sample is under certain water flow pressure, so that the effect of simulating rock-water action is closer to the actual situation. In addition, the water inlet on the top cover 3b and the water outlet at the bottom of the sample containing cylinder 3a are preferably consistent in aperture. The top cover 3b is also provided with air holes for discharging air in the sample container 3 during water filling; the air holes are provided with rubber plugs for plugging in the test process. When the water path is connected, the water inlet and the water outlet of the sample container 3 adopt metal water pipe interfaces to be connected with hoses in a screwing way, and screws are additionally arranged to clamp the hoses for screwing. The sample container 3 can be made of acrylic materials, and is provided with a top cover 3b screwed by threads, so that sample loading and cleaning are facilitated. When the container is sealed and filled with water, the sample container is in a full water state by matching with the designed air holes.
The water outlet pipeline, the sample container 3 and the float flowmeter 4 are all made of transparent materials, the travelling distance and the stage of water flow in the device can be observed in the whole process, one water flow channel can be controlled only by the water flow water stop valve 2, the float flowmeter 4 and the flow speed control valve 5, and the designed water speed can be achieved by observing the float flowmeter.
A sample filter holder 6 is placed in the sample container 3. The purpose of the sample strainer holder 6 is to allow a smooth flow of water out of the sample container 3 and to stabilize the test sample 7 under running water. The sample filter screen frame 6 is a cone frustum with a small upper part and a big lower part, the side wall of the cone frustum is provided with a grating hole communicated with the inner cavity, and the inner cavity of the cone frustum is communicated with the water outlet of the sample container 3; the test sample 7 is placed on the sample filter screen frame 6, and the test sample 7 is cylindrical. The sample screen frame 6 is preferably of a plastic cage construction, which positions the test sample 7 at a certain height and ensures that the water flow can flow out smoothly from the outlet of the sample container 3.
The flow direction of the water flow in the sample container 3 is distributed (as shown by arrows in fig. 3 and 4), the pipe flow generates a vortex phenomenon at the variable cross section, and the existence of the vortex can accelerate the mechanical erosion effect of the water flow on the rock surface, so that the end surface is irregular and irregular. In order to enable the test sample 7 to still perform a mechanical test after the water flow effect, the two ends of the test sample 7 are sealed, the upper end and the lower end of the test sample 7 are wrapped by plastic films, and the end faces of the rock sample can still keep integrity after the water flow effect. Through the processing mode, the effect of erosion of the rock sample by water flow can be observed, and the size requirement of a single-axis and three-axis test on the sample can be met. The upper end and the lower end of the test sample 7 are wrapped by plastic films, so that the gravity scouring action of vertical water flow on the rock sample and the integrity of the end face of the later-stage mechanical test sample can be prevented, the damage of the upper end face and the lower end face is prevented from being serious, and the axial length of the wrapped design is about 5 mm.
The constant pressure water tank 1 is provided with four water outlets which are arranged at equal intervals from left to right in sequence, each water outlet is provided with a water outlet pipeline, and a water flow stop valve 2, a sample container 3, a float flowmeter 4 and a flow rate control valve 5 are connected in series on each water outlet pipeline.
The sample container 3 and the float flowmeter 4 on the four water outlet pipelines are fixedly arranged on the same supporting frame 9. The support frame 9 comprises a bottom plate 9a, a vertical plate 9b, a first horizontal mounting plate 9c and a second horizontal mounting plate 9d which are arranged at intervals from top to bottom and staggered from front to back, the sample containers 3 on the four water outlet pipelines are sequentially mounted on the first horizontal mounting plate 9c at intervals from left to right, and the float flowmeters 4 on the four water outlet pipelines are sequentially mounted on the second horizontal mounting plate 9d at intervals from left to right. The support frame 9 can meet the installation requirements of the float flowmeter and is used for vertically and fixedly connecting the float flowmeter and the sample container.
Claims (5)
1. The utility model provides a water-karst loses experimental dynamic rivers device that uses which characterized in that: the water-saving sampling device comprises a constant-pressure water tank (1), wherein a water flow water stop valve (2), a sample container (3), a float flowmeter (4) and a flow rate control valve (5) are connected in series on a water outlet pipeline of the constant-pressure water tank (1), the sample container (3) comprises a sample loading cylinder (3a) and a top cover (3b), a water inlet is formed in the top cover (3b), a water outlet is formed in the bottom of the sample loading cylinder (3a), a sample filter screen frame (6) is placed in the sample loading container (3), the sample filter screen frame (6) is a cone frustum with a small upper part and a large lower part, a grating hole communicated with an inner cavity is formed in the side wall of the cone frustum, and the inner cavity of the cone frustum is communicated with the water outlet of the sample container (; placed test sample (7) on sample screen frame (6), test sample (7) are cylindrical, and the upper and lower end of test sample (7) all adopts the plastic film parcel, outlet conduit, dress appearance container (3), float flowmeter (4) all adopt transparent material.
2. The dynamic water flow device for water-karst corrosion test according to claim 1, wherein: the constant-pressure water tank (1) comprises a water storage tank (1a) and a water level control valve (1b), the water level control valve (1b) is installed at a water inlet at the top of the water storage tank (1a), and a water purifier is connected to a water outlet of the water storage tank (1 a); the water storage tank (1a) is arranged on the shelf (8), so that the height of the water storage tank (1a) from the ground is 1.5-1.8m, and the sample container (3) is lower than the water storage tank (1 a).
3. The dynamic water flow device for water-karst corrosion test according to claim 1, wherein: the sample loading cylinder (3a) is screwed with the internal thread of the top cover (3b) through the external thread and is provided with a sealing ring to realize sealing; the aperture of a water inlet on the top cover (3b) is consistent with that of a water outlet at the bottom of the sample loading cylinder (3 a); the top cover (3b) is also provided with an air hole and is provided with a rubber soft plug for plugging in the test process.
4. The dynamic water flow device for water-karst corrosion test according to any one of claims 1 to 3, wherein: constant voltage water tank (1) is total four delivery ports and from left to right sets up in proper order equidistance interval, and every delivery port is equipped with an outlet pipe way, and it has rivers stagnant water valve (2), dress appearance container (3), float flowmeter (4), velocity of flow control valve (5) to establish ties on every outlet pipe way, can carry out the dynamic rivers environmental simulation test of four experimental samples (7) simultaneously.
5. The dynamic water flow device for water-karst corrosion test according to claim 4, wherein: four dress appearance container (3), float flowmeter (4) fixed mounting on outlet conduit are on same support frame (9), support frame (9) comprise bottom plate (9a), riser (9b) to and first horizontal mounting board (9c), second horizontal mounting board (9d) that stagger around the interval setting from top to bottom, dress appearance container (3) on four outlet conduit from left to right in proper order the interval install on first horizontal mounting board (9c), float flowmeter (4) on four outlet conduit from left to right in proper order the interval install on second horizontal mounting board (9 d).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921051150.XU CN210154970U (en) | 2019-07-08 | 2019-07-08 | Dynamic water flow device for water-karst corrosion test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921051150.XU CN210154970U (en) | 2019-07-08 | 2019-07-08 | Dynamic water flow device for water-karst corrosion test |
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| CN210154970U true CN210154970U (en) | 2020-03-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117871386A (en) * | 2024-02-26 | 2024-04-12 | 中国地质大学（武汉） | Multi-scale surface-bedding rock dissolution and corrosion simulation experiment device and method |
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- 2019-07-08 CN CN201921051150.XU patent/CN210154970U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117871386A (en) * | 2024-02-26 | 2024-04-12 | 中国地质大学（武汉） | Multi-scale surface-bedding rock dissolution and corrosion simulation experiment device and method |
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