Method for automatically measuring water surface line height and oscillation amplitude suitable for closed space

Abstract

The invention discloses a method for automatically measuring water surface line height and oscillation amplitude suitable for a closed space, and the method enables the water level to be consistent in the measurement process through the principle of communicating vessels, reduces the influence of water surface fluctuation on the measurement result through a buffer region, and measures the water body height through an infrared distance measurement sensor. And the water surface line height and the oscillation amplitude can be accurately obtained. The method has the advantages that the influence of water level fluctuation on the accuracy of the measurement result in the measurement process is weakened through the communicating vessel principle, then the water surface linear oscillation amplitude is accurately obtained, the principle is simple and clear, the phenomenon is visual, and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hydraulic model test, in particular to a method for automatically measuring water surface line height and oscillation amplitude suitable for closed space. BACKGROUND

[0002] Water conservancy project is a basic industry of national economy, and plays a very important role in the development of national economy. Building hydraulic structures is an important way to rationally utilize water resources, and discharge structures are an indispensable part of hydraulic structures. How to ensure the safe operation of discharge structures is a technical problem that needs to be solved in this field.

[0003] The dam discharge makes the downstream water surface unstable, and the long-term scouring of the water body can easily cause the instability of the downstream slope. Therefore, determining the oscillation amplitude of the downstream water surface line is an important part of protecting the downstream slope. At present, dam test is not limited to conventional constant pressure model test, and there are many related reduced pressure tests. In the test process, the test personnel cannot enter the test space, which makes it difficult to measure many test contents, including the water surface line. The main method for measuring the water surface line is for the test personnel to enter the water cushion pond to measure. The measurement result is greatly affected by the test personnel, and the test personnel entering the water cushion pond causes disturbance to the water body, which greatly affects the water surface oscillation amplitude and the accuracy of the measurement result.

[0004] In view of the problems that the test personnel cannot enter the closed space during the test process, the oscillation amplitude of the water surface line in the closed space is difficult to measure, and the measurement error of the conventional method for measuring the oscillation amplitude of the water surface line is large, in order to effectively determine the oscillation amplitude of the water surface line in the closed space, a method for automatically measuring the oscillation amplitude of the water surface line suitable for the closed space is needed. SUMMARY

[0005] The present application provides a method for automatically measuring the oscillation amplitude of the water surface line suitable for the closed space, which can ensure the smooth progress of the hydraulic test and realize accurate measurement of the oscillation amplitude of the water surface line.

[0006] In order to achieve the above purpose, the present application provides a device and method for automatically measuring the oscillation amplitude of the water surface line suitable for the closed space. The method can keep the water level consistent during the measurement process by the principle of communicating vessel, reduce the influence of water surface fluctuation on the measurement result by the buffer zone, and measure the water height by the infrared distance sensor, so that the water surface line height and oscillation amplitude can be accurately obtained.

[0007] The first aspect, the present application provides a kind of device for automatically measuring water surface line height and oscillation amplitude suitable for enclosed space, the device includes three groups of containers, each group of containers includes buffer zone and measuring area, buffer zone and measuring area are provided with the air pipe connected with the outside of container, the buffer zone is provided with the one-way valve or communication pipe connected with the outside of container, the buffer zone and measuring area are provided with the one-way valve or communication pipe connected with each other, the top position in the measuring area is respectively provided with infrared distance sensor.

[0008] Further, the air pipe includes measuring area air pipe and buffer zone air pipe, wherein the measuring area air pipe I, the measuring area air pipe II, the measuring area air pipe III are respectively connected with the measuring area I, the measuring area II, the measuring area III of three groups of containers;The buffer zone air pipe I, the buffer zone air pipe II, the buffer zone air pipe III are respectively connected with the buffer zone I, the buffer zone II, the buffer zone III of three groups of containers.

[0009] Further, the buffer zone is provided with the one-way valve connected with the outside of container, including the one-way valve I connected with the outside of buffer zone, the one-way valve III connected with the outside of buffer zone, including the communication pipe II connected with the outside of buffer zone, wherein the one-way valve I connected with the outside of buffer zone, the one-way valve III connected with the outside of buffer zone are respectively installed in the upper portion of the container wall of buffer zone I and buffer zone III with water area, the one-way valve I connected with the outside of buffer zone is the one-way valve from buffer zone I to the outside of container, the one-way valve III connected with the outside of buffer zone is the one-way valve from the outside of container to buffer zone III;The communication pipe II connected with the outside of buffer zone is installed in the upper portion of the container wall of buffer zone II with water area.

[0010] Further, the buffer zone and measuring area are provided with the one-way valve connected with each other, including the one-way valve I connected with buffer zone and measuring area, the one-way valve III connected with buffer zone and measuring area, including the communication pipe II connected with buffer zone and measuring area, wherein the one-way valve I connected with buffer zone and measuring area, the one-way valve III connected with buffer zone and measuring area are respectively installed in the lower portion of buffer zone I and buffer zone III with measuring area, the one-way valve I connected with buffer zone and measuring area is the one-way valve from measuring area I to buffer zone I;The one-way valve III connected with buffer zone and measuring area is the one-way valve from buffer zone III to measuring area III, the communication pipe II connected with buffer zone and measuring area is installed in the lower portion of buffer zone II with container.

[0011] Further, the infrared distance sensor includes infrared distance sensor I, infrared distance sensor II, infrared distance sensor III, and the infrared distance sensor I, the infrared distance sensor II, the infrared distance sensor III are respectively installed in the top position in measuring area I, measuring area II, measuring area III.

[0012] Further, the communication pipe II connected with the outside of buffer zone, the communication pipe II connected with buffer zone and measuring area are all installed with regulating valve.

[0013] In a second aspect, the present application provides a method for measuring water surface level and oscillation amplitude in a closed space automatically, which is realized by the device of the first aspect of the present application, and the method comprises the following steps: (1) First, three groups of containers are made, wherein group I is used for measuring the lowest water level of water surface oscillation, group II is used for recording the average value of water surface level, and group III is used for measuring the highest water level of water surface oscillation. Buffer zones and measuring zones are arranged in each group of containers, and air pipes are installed on the top of the buffer zones and the measuring zones of the three groups of containers; (2) In the group I container, a one-way valve I connecting the buffer zone I and the outside is installed on the upper part of the container wall of the water body area and flows from inside to outside, and a one-way valve I connecting the buffer zone I and the measuring zone I is installed on the middle and lower part of the buffer zone I and the measuring zone I and flows from the measuring zone I to the buffer zone I; (3) In the group II container, a communication pipe II connecting the buffer zone II and the outside is installed on the upper part of the container wall of the water body area, a communication pipe II connecting the buffer zone II and the measuring zone II is installed on the middle and lower part of the buffer zone II and the measuring zone II, and a regulating valve for reducing flow rate is installed on the communication pipe II connecting the buffer zone and the outside and the communication pipe 4 II; (4) In the group III container, a one-way valve III connecting the buffer zone III and the outside is installed on the upper part of the container wall of the water body area and flows from outside to inside, and a one-way valve III connecting the buffer zone III and the measuring zone III is installed on the middle and lower part of the buffer zone III and the measuring zone III and flows from the buffer zone III to the measuring zone III; (5) Close the one-way valve I connecting the buffer zone I, the buffer zone II, and the buffer zone III and the outside, the one-way valve III connecting the buffer zone and the outside, and the communication pipe II connecting the buffer zone and the outside, fill water in the group I container, so that the water fills the measuring zone I and the buffer zone I of the group I, and empty the water in the buffer zone II, the buffer zone III, the measuring zone II, and the measuring zone III of the group II and the group III, and keep the group I in a full water state and the group II and the group III in a no water state before the test; (6) Close all the measuring zone air pipes I, the measuring zone air pipes II, the measuring zone air pipes III, and the buffer zone air pipes I, the buffer zone air pipes II, and the buffer zone air pipes III connected with the group I, the group II, and the group III, so that the group I, the group II, and the group III are all in a closed state; (7) Open the one-way valve I connecting the buffer zone and the outside, the one-way valve III connecting the buffer zone and the outside, and the communication pipe II connecting the buffer zone and the outside which have been closed, place the device at the position where the water surface level needs to be measured, and lead out the measuring zone air pipes I, the measuring zone air pipes II, the measuring zone air pipes III, and the buffer zone air pipes I, the buffer zone air pipes II, and the buffer zone air pipes III from the closed space to above the water surface level, so as to facilitate the opening and closing of the measuring zone air pipes I, the measuring zone air pipes II, the measuring zone air pipes III, and the buffer zone air pipes I, the buffer zone air pipes II, and the buffer zone air pipes III during the test; (8) Start the test, wait for the water level of the test upstream and downstream to reach the target water level and keep stable, then open the measuring area air pipe I, measuring area air pipe II, measuring area air pipe III of group I, group II, group III, and buffer area air pipe I, buffer area air pipe II, buffer area air pipe III, open infrared distance sensor I, infrared distance sensor II, infrared distance sensor III to measure the water height, and multiple sets of data are measured; (9) The multiple sets of water height measured by group I, group II and group III are averaged to obtain the lowest point, the highest point and the average point of the water surface line, so as to obtain the oscillation amplitude and the average value of the water surface line.

[0014] The present application has the advantages and positive effects that: through the principle of communicating vessel, the water level can be kept consistent during the measurement, the water level remains unchanged through the action of atmospheric pressure after the measurement is completed, and then the water surface line oscillation amplitude is obtained more accurately, the principle is simple and clear, the phenomenon is intuitive, and the cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view schematic diagram of the device used in the method of the present application. Figure 2 It is a side view schematic diagram of the device used in the method of the present application.

[0016] Figure 3 It is a top view schematic diagram of the device used in the method of the present application.

[0017] Figure 4 It is an isometric view of the device used in the method of the present application.

[0018] In the figure: 11, measuring area air pipe I; 12, measuring area air pipe II; 13, measuring area air pipe III; 21, buffer area air pipe I; 22, buffer area air pipe II; 23, buffer area air pipe III; 31, one-way valve I connected between the buffer area and the outside; 32, communicating pipe II connected between the buffer area and the outside; 33, one-way valve III connected between the buffer area and the outside; 41, one-way valve I connected between the buffer area and the measuring area; 42, communicating pipe II connected between the buffer area and the measuring area; 43, one-way valve III connected between the buffer area and the measuring area; 51, buffer area I; 52, buffer area II; 53, buffer area III; 61, measuring area I; 62, measuring area II; 63, measuring area III; 71, infrared distance sensor I; 72, infrared distance sensor II; 73, infrared distance sensor III. DETAILED DESCRIPTION

[0019] To further understand the inventive content, features and effects of the present application, the following examples are given below in detail with reference to the accompanying drawings. Please refer to Figures 1-4 The present application provides a device for automatically measuring water surface line height and oscillation amplitude in a closed space, which comprises three groups of containers, each group of containers comprising a buffer zone and a measurement zone, and the buffer zone and the measurement zone are provided with air pipes connected to the outside of the container. The air pipe comprises measurement zone air pipe Ⅰ 11, measurement zone air pipe Ⅱ 12 and measurement zone air pipe Ⅲ 13, which are respectively connected to measurement zone Ⅰ 61, measurement zone Ⅱ 62 and measurement zone Ⅲ 63 of the three groups of containers; buffer zone air pipe Ⅰ 21, buffer zone air pipe Ⅱ 22 and buffer zone air pipe Ⅲ 23, which are respectively connected to buffer zone Ⅰ 51, buffer zone Ⅱ 52 and buffer zone Ⅲ 53 of the three groups of containers. It includes one-way valve Ⅰ 31 connected to the outside of the buffer zone, one-way valve Ⅲ 33 connected to the outside of the buffer zone, one-way valve Ⅰ 41 connected to the measurement zone of the buffer zone, and one-way valve Ⅲ 43 connected to the measurement zone of the buffer zone. One-way valve Ⅰ 31 connected to the outside of the buffer zone and one-way valve Ⅲ 33 connected to the outside of the buffer zone are respectively installed in the upper part of the container wall of buffer zone Ⅰ 51 and buffer zone Ⅲ 53 in the water area, one-way valve Ⅰ 31 connected to the outside of the buffer zone is a one-way valve from buffer zone Ⅰ 51 to the outside of the container, and one-way valve Ⅲ 33 connected to the outside of the buffer zone is a one-way valve from the outside of the container to buffer zone Ⅲ 53. One-way valve Ⅰ 41 connected to the measurement zone of the buffer zone and one-way valve Ⅲ 43 connected to the measurement zone of the buffer zone are respectively installed in the lower part of the buffer zone Ⅰ 51 and the buffer zone Ⅲ 53 and the measurement zone, one-way valve Ⅰ 41 connected to the measurement zone of the buffer zone is a one-way valve from measurement zone Ⅰ 61 to buffer zone Ⅰ 51, and one-way valve Ⅲ 43 connected to the measurement zone of the buffer zone is a one-way valve from buffer zone Ⅲ to measurement zone Ⅲ. It includes communication pipe Ⅱ 32 connected to the outside of the buffer zone and communication pipe Ⅱ 42 connected to the measurement zone of the buffer zone, communication pipe Ⅱ 32 connected to the outside of the buffer zone is installed in the upper part of the container wall of buffer zone Ⅱ 52 in the water area, and communication pipe Ⅱ 42 connected to the measurement zone of the buffer zone is installed in the lower part of the container wall of buffer zone Ⅱ 52, and communication pipe Ⅱ 32 connected to the outside of the buffer zone and communication pipe Ⅱ 42 connected to the measurement zone of the buffer zone are respectively installed in the lower part of the container wall of buffer zone Ⅱ 52 and the measurement zone, and communication pipe Ⅱ 32 connected to the outside of the buffer zone and communication pipe Ⅱ 42 connected to the measurement zone of the buffer zone are respectively installed in the lower part of the container wall of buffer zone Ⅱ 52 and the measurement zone. The top of measurement zone Ⅰ 61, measurement zone Ⅱ 62 and measurement zone Ⅲ 63 is respectively provided with infrared distance sensor Ⅰ 71, infrared distance sensor Ⅱ 72 and infrared distance sensor Ⅲ 73.

[0020] Based on the above device, the present application provides a method for automatically measuring water surface line height and oscillation amplitude in a closed space. The method measures the water surface line amplitude by the principle of communicating vessel, one-way valve and atmospheric pressure, and solves the problem of manual measurement of water surface line in a closed space.

[0021] The method adopts the following steps: (1) First, three groups of containers are made, wherein group I is used to measure the lowest water level of water surface line oscillation, group II is used to record the average value of water surface line, and group III is used to measure the highest water level of water surface line oscillation. Buffer zones and measuring zones are arranged in each group of containers, and air pipes are installed on the top of the buffer zones and the measuring zones of the three groups of containers.

[0022] (2) In the group I container, a unidirectional valve 131 connected with the outside world is installed on the upper middle part of the container wall of the water body region of the buffer zone 151, and a unidirectional valve 141 connected with the measuring zone is installed on the lower middle part of the buffer zone 151 and the measuring zone 161.

[0023] (3) In the group II container, a communication pipe 132 connected with the outside world is installed on the upper middle part of the container wall of the water body region of the buffer zone 152, and a communication pipe 142 connected with the measuring zone is installed on the lower middle part of the buffer zone 152 and the measuring zone 162, and an adjusting valve for reducing the flow rate is installed on the communication pipe 142 connected with the measuring zone.

[0024] (4) In the group III container, a unidirectional valve 133 connected with the outside world is installed on the upper middle part of the container wall of the water body region of the buffer zone 153, and a unidirectional valve 143 connected with the measuring zone is installed on the lower middle part of the buffer zone 153 and the measuring zone 163.

[0025] (5) The unidirectional valves 131, 133 and the communication pipe 132 connected with the outside world are closed, water is poured into the group I container, so that the water fills the measuring zone 161 and the buffer zone 151 of the group I, and the water in the buffer zones 152, 153 and the measuring zones 162, 163 of the group II and the group III is emptied, so that the group I is in a full water state and the group II and the group III are in a no water state before the test.

[0026] (6) All the measuring zone air pipes 111, 112, 113 and the buffer zone air pipes 121, 122, 123 connected with the group I, the group II and the group III are closed, so that the group I, the group II and the group III are in a sealed state.

[0027] (7) Open all the one-way valves I31, III33, and II32 that connect the closed buffer zone to the outside, and place the device at the position where the water level needs to be measured. Lead the air pipes I11, II12, III13, I21, II22, and III23 of the measurement area, as well as the air pipes I21, II22, and III23 of the buffer zone out of the closed space to above the water level, so that the air pipes I11, II12, III13, I21, II22, and III23 of the measurement area, as well as the air pipes I21, II22, and III23 of the buffer zone, can be opened and closed during the test.

[0028] (8) Start the test. After the upstream and downstream water levels reach the target water level and remain stable, turn on the air pipes I11, II12, and III of the measurement area of ​​Group I, Group II, and Group III, as well as the air pipes I21, II2, and III23 of the buffer zone. Turn on the infrared ranging sensors I71, II72, and III73 to measure the water height and obtain multiple sets of data.

[0029] (9) Take the average value of the water body heights measured in Group I, Group II and Group III to obtain the lowest point, highest point and average point of the water surface line, and thus obtain the oscillation amplitude and mean value of the water surface line.

[0030] Although preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other modifications under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these modifications are within the scope of protection of the present invention.

Claims

1. A device for automatically measuring the water surface level and the oscillation amplitude in a closed space, characterized in that: The device comprises three groups of containers, each group of containers comprising a buffer zone and a measuring zone, the buffer zone and the measuring zone being provided with a ventilation pipe connected to the outside of the container, the buffer zone being provided with a one-way valve or a communication pipe connected to the outside of the container, the buffer zone and the measuring zone being provided with a one-way valve or a communication pipe connected to each other, and the top of the measuring zone being provided with an infrared distance measuring sensor.

2. The apparatus of claim 1, wherein: The ventilation pipe comprises a measuring zone ventilation pipe and a buffer zone ventilation pipe, wherein the measuring zone ventilation pipe I, the measuring zone ventilation pipe II and the measuring zone ventilation pipe III are connected to the measuring zone I, the measuring zone II and the measuring zone III of the three groups of containers respectively; and the buffer zone ventilation pipe I, the buffer zone ventilation pipe II and the buffer zone ventilation pipe III are connected to the buffer zone I, the buffer zone II and the buffer zone III of the three groups of containers respectively.

3. The apparatus of claim 1, wherein: The buffer zone is provided with a one-way valve connected to the outside of the container, which comprises a one-way valve I connected to the outside of the buffer zone, a one-way valve III connected to the outside of the buffer zone, and a communication pipe II connected to the outside of the buffer zone, wherein the one-way valve I connected to the outside of the buffer zone and the one-way valve III connected to the outside of the buffer zone are respectively installed in the upper part of the container wall of the buffer zone I and the buffer zone III, the one-way valve I connected to the outside of the buffer zone is a one-way valve for flowing from the buffer zone I to the outside of the container, and the one-way valve III connected to the outside of the buffer zone is a one-way valve for flowing from the outside of the container to the buffer zone III; and the communication pipe II connected to the outside of the buffer zone is installed in the upper part of the container wall of the buffer zone II.

4. The apparatus of claim 1, wherein: The buffer zone and the measuring zone are provided with a one-way valve connected to each other, which comprises a one-way valve I connected to the buffer zone and the measuring zone, a one-way valve III connected to the buffer zone and the measuring zone, and a communication pipe II connected to the buffer zone and the measuring zone, wherein the one-way valve I connected to the buffer zone and the measuring zone and the one-way valve III connected to the buffer zone and the measuring zone are respectively installed in the lower part of the buffer zone I and the buffer zone III and the measuring zone, the one-way valve I connected to the buffer zone and the measuring zone is a one-way valve for flowing from the measuring zone I to the buffer zone I; the one-way valve III connected to the buffer zone and the measuring zone is a one-way valve for flowing from the buffer zone III to the measuring zone III, and the communication pipe II connected to the buffer zone and the measuring zone is installed in the lower part of the buffer zone II and the container.

5. The apparatus of claim 1, wherein: The infrared distance measuring sensor comprises an infrared distance measuring sensor I, an infrared distance measuring sensor II and an infrared distance measuring sensor III, which are respectively installed in the top position of the measuring zone I, the measuring zone II and the measuring zone III.

6. The apparatus of claim 3 or 4, wherein: Adjusting valves are installed on the communication pipe II connected to the outside of the buffer zone and the communication pipe II connected to the buffer zone and the measuring zone.

7. A method for automatically measuring water surface line height and oscillation amplitude in a closed space, characterized in that, The method is realized by the device of any one of claims 1-6, The method comprises the following steps: (1) First, three groups of containers are made, wherein group I is used to measure the lowest water level of water surface line oscillation, group II is used to record the average value of water surface line, and group III is used to measure the highest water level of water surface line oscillation. A buffer zone and a measuring zone are arranged in each group of containers, and a ventilation pipe is installed at the top of the buffer zone and the measuring zone of the three groups of containers; (2) In the group I container, the buffer zone I and the upper part of the container wall of the water body area are installed with the buffer zone and the outside connection one-way valve I flowing from inside to outside, and the middle and lower part of the buffer zone I and the measuring zone I are installed with the buffer zone and the measuring zone connection one-way valve I flowing from the measuring zone I to the buffer zone I; (3) In the group II container, the buffer zone II and the upper part of the container wall of the water body area are installed with the buffer zone and the outside connection communication pipe II, and the middle and lower part of the buffer zone II and the measuring zone II are installed with the buffer zone and the measuring zone connection communication pipe II, and the buffer zone and the outside connection communication pipe II and the buffer zone and the measuring zone connection communication pipe II are installed with the flow speed reducing regulating valve; (4) In the group III container, the buffer zone III and the upper part of the container wall of the water body area are installed with the buffer zone and the outside connection one-way valve III flowing from outside to inside, and the middle and lower part of the buffer zone III and the measuring zone III are installed with the buffer zone and the measuring zone connection one-way valve III flowing from the buffer zone III to the measuring zone III; (5) The buffer zone and the outside connection one-way valve I, the buffer zone and the outside connection one-way valve III, and the buffer zone and the outside connection communication pipe II of the buffer zone I, the buffer zone II, and the buffer zone III are closed, water is poured into the group I container, and the water fills the measuring zone I and the buffer zone I of the group I, and the water in the buffer zone II, the buffer zone III, the measuring zone II, and the measuring zone III of the group II and the group III is emptied, so that the group I is in the full water state and the group II and the group III are in the no water state before the test; (6) All the measuring zone air pipes I, the measuring zone air pipes II, the measuring zone air pipes III, and the buffer zone air pipes I, the buffer zone air pipes II, and the buffer zone air pipes III connected with the group I, the group II, and the group III are closed, so that the group I, the group II, and the group III are all in the closed state; (7) The buffer zone and the outside connection one-way valve I, the buffer zone and the outside connection one-way valve III, and the buffer zone and the outside connection communication pipe II which have been closed are all opened, the device is placed in the position where the water surface line needs to be measured, and the measuring zone air pipes I, the measuring zone air pipes II, the measuring zone air pipes III, and the buffer zone air pipes I, the buffer zone air pipes II, and the buffer zone air pipes III are led out of the closed space to above the water surface line, so as to facilitate the opening and closing of the measuring zone air pipes I, the measuring zone air pipes II, the measuring zone air pipes III, and the buffer zone air pipes I, the buffer zone air pipes II, and the buffer zone air pipes III during the test; (8) The test is started, and after the water levels of the upstream and the downstream of the test reach the target water level and remain stable, the measuring zone air pipes I, the measuring zone air pipes II, the measuring zone air pipes III, and the buffer zone air pipes I, the buffer zone air pipes II, and the buffer zone air pipes III of the group I, the group II, and the group III are opened, the infrared distance measuring sensors I, the infrared distance measuring sensors II, and the infrared distance measuring sensors III measure the water body height, and multiple groups of data are measured; (9) The multiple groups of water body heights measured by the group I, the group II, and the group III are averaged to obtain the lowest point, the highest point, and the average point of the water surface line, so as to obtain the oscillation amplitude and the average value of the water surface line.

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