Float-type railway line rain gauge and measuring method thereof

Abstract

The invention relates to the technical field of railway flood prevention and control, and discloses a floater type railway line rain gauge and a measuring method thereof.The floater type railway line rain gauge comprises a closed outer container, the top of the outer container is inwards provided with an inner container, and the top of the side wall of the inner container is provided with a baffle capable of rotating towards the interior of the outer container; the baffle rotates, and water flows into an external container; a floating ball liquid level meter is arranged in the inner container and / or the outer container, electronic drain valves are arranged at the bottoms of the inner container and the outer container, and the controller controls the electronic drain valves to drain water and accumulate rainfall data when the container is about to be fully loaded, or water drainage is started regularly. Rainfall monitoring is carried out through the inner container, the outer container and the floating ball liquid level meter, disaster monitoring is carried out on the ground track through the capacitive pressure sensor, the safety of the ground track is guaranteed, the multiple rain gauges are arranged along the railway track for detection, and the working efficiency of railway line rainfall measurement is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of railway flood prevention and control, and in particular to a float-type railway line rain gauge and a measuring method thereof. Background Art

[0002] With the rapid development of the economy and society, people's travel requirements are getting higher and higher. On the basis of the rapid development of comprehensive transportation and the increasingly improved transportation network, people are more dependent on railways for travel. More and more railway lines are laid in some areas with heavy annual rainfall and low-lying terrain; under the influence of natural disasters such as rainy seasons and typhoons, the risk of railway floods has become a difficult problem affecting railway transportation safety. How to monitor rainfall in real time under extreme natural disaster conditions such as rainy seasons and typhoons, issue early warnings when the alarm threshold is reached, and determine the blockage of the drainage system in the laid railway section is the top priority for railway maintenance personnel to reduce the railway operation accident rate.

[0003] However, there are still problems in preventing and controlling railway floods:

[0004] (1) Railway flood prevention and control is mostly done by inspectors monitoring drainage conditions in drainage ditches, which is inefficient and requires a lot of human resources to inspect all routes. At the same time, staff cannot inspect all sections of the road throughout the day, but can only check the real-time conditions during regular inspections, making it difficult to deal with flood risks in a timely manner, which poses a risk.

[0005] (2) Use the circuit on the track to detect water accumulation. When the water accumulation on the track reaches a certain level, the track circuit will be short-circuited, indicating that the railway line may be flooded. Floods can be discovered in a timely manner, but this method has a high false detection rate and cannot locate the location of water accumulation. The entire railway line of the section needs to be inspected, which is difficult to play a decisive role in flood prevention and control.

[0006] (3) my country's railway lines are complex and densely distributed, and many railway lines are built in mountainous areas with poor geographical conditions. It is obviously insufficient to rely on manual regular inspections of flood risks in such difficult-to-monitor sections. In addition, floods often occur suddenly, and regular monitoring is also difficult to cope with extreme situations such as heavy rains, mudslides caused by floods, etc. that cause damage to the lines.

[0007] (4) For railway lines built in mountainous areas with poor geographical locations, the manual inspection process may also bring risks to the inspection personnel. When there are trains running on the line, the inspection personnel need to pay attention to avoiding the passing trains while eliminating the hidden dangers. In addition, there is a considerable proportion of single-track railways in my country, and the safety areas beside these lines are small. When trains pass at high speed, it will also affect the personal safety of the inspection personnel.

[0008] (5) Currently, intelligent and digital technologies are developing rapidly. In order to improve the efficiency of flood risk detection and ensure the safe operation of trains, there is an urgent need for an instrument that can analyze and process terrain data, calculate flood resistance based on the conditions of drainage facilities, and use electronic equipment to conduct close all-weather monitoring in areas with high flood risks to ensure the safety of passengers and staff. Summary of the invention

[0009] The purpose of the present invention is to provide a float-type railway line rain gauge and a measuring method thereof, so as to solve the problem proposed in the above-mentioned background technology that although manual inspection can provide water disaster warning, the work efficiency is low, the labor intensity is high and the risk is high. At the same time, this rain gauge is applied to the line to replace the method of monitoring water accumulation in the track circuit, so as to further improve the accuracy and determine the location of water accumulation.

[0010] The present invention provides the following technical solutions:

[0011] In the first aspect, the present invention provides a float-type railway line rain gauge, which includes a closed outer container, an inner container is arranged inwardly at the top of the outer container, and a baffle is arranged on the top of the side wall of the inner container and can rotate toward the outer container. When the water level of the inner container exceeds the height of the baffle, the baffle rotates and water flows into the outer container outside. A float level gauge is arranged in the inner container and / or the outer container, and the float level gauge transmits the measured liquid level data to a controller in real time. The controller sends a corresponding rainfall warning signal to the outside according to whether the liquid level data exceeds a preset warning water level threshold. An electronic drain valve is arranged at the bottom of the inner and outer containers, and the controller controls the electronic drain valve to drain water and accumulate rainfall data when it is about to be full, or to start drainage at a fixed time.

[0012] According to some embodiments, when a float level gauge is provided only in the outer container or a float level gauge is provided only in the inner container, the volume of the inner container is set as a warning rainfall.

[0013] According to some embodiments, the controller is connected to a capacitive pressure sensor via a signal transmission line. The capacitive pressure sensor is arranged on the side of the railway track or in a line drainage ditch to monitor whether the accumulated water is higher than the position of the capacitive pressure sensor and transmit the detection signal to the controller.

[0014] According to some embodiments, when the amount of water in the inner container reaches a first warning water level, which is 80% of its volume, a first early warning alarm is triggered; when the amount of water in the outer container reaches a second warning water level, which is 30% of its volume, a second early warning alarm is triggered.

[0015] According to some embodiments, the lower portion of the outer container is cylindrical and the top portion is semi-conical.

[0016] In a second aspect, the present invention further provides a measurement method according to the above-mentioned float-type railway line rain gauge, wherein both the inner and outer containers are provided with float level gauges, the float level gauge of the inner container is a first float level gauge, and the float level gauge of the outer container is a second float level gauge, comprising the following steps:

[0017] S1: When it rains, the inner container first receives rainwater, and when the controller measures the liquid level of the first float level gauge to the first warning water level, a corresponding first warning operation is performed;

[0018] S2: When the rainfall exceeds the volume of the inner container, the rainwater enters the outer container through the baffle, and the controller measures the liquid level of the second float level gauge to the second warning water level, and performs a corresponding second warning operation; when the second float level gauge measures that the outer container is about to be full, the controller opens two electronic drain valves to drain water, and the controller accumulates and records rainfall data;

[0019] S3: When the water level change value of the inner and outer containers is less than the set threshold value within a preset time period, the two electronic drain valves are opened for drainage at a fixed time and then closed, and then enter the next rainfall detection cycle.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) The float-type railway line rain gauge provided by the present invention uses electronic equipment such as a float level gauge and a controller to conduct flood investigation and early warning, which greatly improves the timeliness of early warning and solves the problem that manual detection in the past was time-consuming and labor-intensive and could not be monitored in real time.

[0022] (2) Float level gauges are installed in the inner and outer containers to detect even small amounts of rainfall, which is suitable for use in the rainy season or in arid areas. Even if a sudden torrential rain falls in an arid area, the rainfall can be detected normally and a rainfall alarm of the corresponding level can be issued.

[0023] (3) The electronic drain valve can open and close the valve at a fixed time according to the drainage cycle set by the controller, realizing automatic drainage control of the internal and external containers.

[0024] (4) After the rainfall ends, the water levels detected by the internal and external liquid level gauges no longer change. After a timing cycle, the drainage valve opens to discharge the water in the internal and external containers out of the rain gauge at the same time, and the next rainfall warning cycle begins. The automation level is high, which greatly reduces the manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic front view of the structure of a float type railway line rain gauge provided in an embodiment of the present invention.

[0026] Figure 2 for Figure 1 Bottom view of .

[0027] Figure 3 A schematic cross-sectional enlarged structural diagram of a baffle of a float-type railway line rain gauge provided in an embodiment of the present invention.

[0028] 1. Outer container; 2. Baffle; 3. First float level gauge; 4. Second float level gauge; 5. Electronic drain valve; 6. Inner container; 7. Fixed plate; 8. Drain pipe; 9. Sealing ring; 10. Hinge shaft; 11. Controller; 12. Signal transmission line; 13. Capacitive pressure sensor. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the embodiments and drawings, but it should be understood that the embodiments and drawings are only used to exemplify the present invention and do not constitute any limitation on the protection scope of the present invention. All reasonable changes and combinations within the scope of the inventive concept of the present invention fall within the protection scope of the present invention.

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Example 1

[0032] See also Figure 1 This embodiment provides a float-type railway line rain gauge, which includes an outer container 1 with a cylindrical bottom and a semi-conical top. The outer container 1 has a shape that can better receive the rainwater to be monitored and prevent rainwater on both sides from flowing into the rain gauge to cause mismeasurement. The outer container 1 is sealed on all sides, and a cylindrical inner container 6 is provided at the top opening. The top of the side wall of the inner container 6 is hinged to a baffle 2 through a hinge shaft 10. The baffle 2 can only be opened outwards. Figure 3 A horizontal fixing plate 7 is provided at the top of the inner container 6, a first float level gauge 3 is fixedly provided between the fixing plate 7 and the bottom of the inner container 6, a second float level gauge 4 is provided between the cone top and the bottom of the outer container 1, an electronic drain valve 5 is provided at the bottom of both the inner and outer containers, a drain pipe 8 is provided outside the electronic drain valve 5 of the outer container 1, and a sealing ring 9 is provided outside the electronic drain valve 5 to ensure accurate detection and sealing. Figure 2 The electronic drain valve 11 is externally connected to the controller 11; the first and second float level gauges output liquid level signals to the external controller 11.

[0033] When in use, the inner container 6 first receives rainwater. When the rainwater pushes the float of the first float level gauge 3 to float upward, the first float level gauge 3 sends the first water level data to the controller 11 for processing. The controller 11 receives the first water level data that changes in real time. When the first water level data reaches the preset first warning water level, the corresponding first warning operation is performed.

[0034] If the rainfall exceeds the volume of the inner container 6, the rainwater flows into the outer container 1 through the baffle 2. When the rainwater pushes the float of the second float liquid level gauge 4 to float up, the second float liquid level gauge 4 sends the second water level data to the controller 11 for processing in real time. The controller 11 receives the second water level data that changes in real time. When the second water level data reaches the preset second warning water level, the corresponding second warning operation is performed. When the second float liquid level gauge 4 measures that the outer container 1 is about to be full, the controller 11 controls the two electronic drain valves 5 to work and drain water, and the controller 11 continues to accumulate the liquid level data.

[0035] The warning level of the first warning operation is lower than that of the second warning operation. In practice, multiple warning levels can be formulated according to actual needs to perform corresponding different warning operations, which is convenient for multi-level rainfall disaster prevention and control management.

[0036] When the first and second float level gauges detect that the rainfall stops changing for a preset time, it means that the rainfall has stopped. The controller 11 controls the two electronic drain valves 5 to work and drain the rainwater. The rainwater is discharged from the inner and outer containers through the drain pipe 8, preparing for the next rainfall measurement.

[0037] For example, in the rainy season in the south, when the rainfall is small or in some arid areas, the controller 11 detects that only the first float level gauge 3 can measure the water level, and the water level changes little for a long time, while the second float level gauge 4 cannot measure the water level. The controller 11 can judge that the rainfall is small and adjust the drainage period of the electronic drain valve 11 to a longer time. When the rainfall in these areas suddenly increases and the controller 11 detects that the liquid level data rises rapidly in a short time, it will issue a warning signal according to the set rainfall warning line.

[0038] Alarm threshold description: When the water volume in the inner container 6 reaches the first warning water level, which is 80% of its volume, the first early warning alarm is triggered; when the water volume in the outer container 1 reaches the second warning water level, which is 30% of its volume, the second early warning alarm is triggered.

[0039] Rain gauge material: The outer container 1 and the inner container 6 are made of national standard steel pipes, with plastic spraying treatment on the surface, which has super anti-corrosion performance. All equipment cable connectors are waterproof connectors, and are waterproofed inside and outside;

[0040] Rain gauge dimensions: container body diameter is 300mm, measuring aperture is 100mm, container height is 800mm, maximum water storage capacity is 30kg, and mass is 10kg.

[0041] The baffle 2 can be flipped up to 90 degrees at most, and the hinge shaft 10 connected to the baffle 2 exerts a force on the baffle. When the water level does not reach the height of the baffle 2, it is in a closed state. When the inner container 6 is filled with rainwater, the hinge shaft 10 is driven by the force of rainwater to open the baffle 2, making it easier for rainwater to enter the outer container 1.

[0042] Example 2

[0043] In this embodiment, in order to make the warning of the float-type railway line rain gauge more accurate and timely, the warning rainfall can be set to the maximum value of the rainfall contained in the inner container 6. When the water overflows the inner container and enters the outer container, it is regarded as exceeding the first warning rainfall. Subsequently, the second water level data is sent to the controller 11 through the second float liquid level gauge 4. When the controller 11 detects that the second water level data has changed, the first warning signal is issued accordingly.

[0044] In this embodiment, there is no need to provide the first float level gauge 3 in the inner container 6, and only the second float level gauge 4 is required to be provided in the outer container 1. The controller 11 only needs to receive the signal of the second float level gauge 4. The cost of the rain gauge product will be reduced accordingly.

[0045] The inner and outer containers are set, and the capacity of the inner container 6 is set to the warning rainfall. The maximum rainfall in the outer container 1 can be significantly increased, and the rain gauge can continuously output rainfall values ​​for a long time. The capacity of the inner container 6 can be set to the warning amount of "once in ten years heavy rain" or "once in a hundred years heavy rain" according to the set standard, thereby improving the accuracy and flexibility of rainfall measurement.

[0046] Example 3

[0047] In this experimental example, in order to improve the reliability of the float-type railway line rain gauge and reduce the cost of the rain gauge, in some areas with low rainfall and drought, only the first float level gauge 3 can be provided in the inner container 6, and there is no need to provide the second float level gauge 4 in the outer container 1. The controller 11 only needs to receive the signal of the first float level gauge 3.

[0048] In areas with low rainfall, it is often difficult for the rainfall to exceed the volume of the inner container 6 to enter the outer container 1, so the first float level gauge 3 is provided in the inner container 6 to accurately measure the rainfall. When the rainfall exceeds the volume of the inner container 6, it often proves that some special conditions such as extreme weather have occurred, and the controller 11 needs to issue a first warning signal, so not providing the second float level gauge 4 of the outer container 1 can also reduce the equipment cost while ensuring the normal operation of the equipment.

[0049] The first float level gauge 3 measures the water level change value of the inner and outer containers. When the water level change value is less than the set value within a timing cycle, the electronic drain valve 5 is opened to drain the water. Then the controller 11 will automatically perform a self-check to ensure that the liquid levels of the inner and outer containers are restored to the initial state. Subsequently, the controller 11 will record and analyze the rainfall data to optimize the subsequent warning threshold setting and drainage strategy. In addition, the controller 11 will also perform periodic maintenance and calibration based on historical rainfall data to maintain the efficiency and accuracy of liquid level monitoring.

[0050] During this process, the controller 11 automatically records and analyzes the liquid level data to optimize the subsequent warning threshold settings. In addition, the controller will adjust the drainage frequency according to the real-time liquid level changes to ensure that the drainage efficiency matches the rainfall intensity. In this way, the controller 11 can effectively manage the amount of rainwater and reduce the risk of waterlogging.

[0051] During this process, the rain gauge system ensures the accuracy and timeliness of real-time warnings through continuous liquid level monitoring and data analysis. In addition, the controller 11 can also make intelligent predictions and adjustments based on historical rainfall data and real-time water level information to optimize the response efficiency of the drainage system. Subsequently, the system automatically records the relevant data of this rainfall, providing important reference for subsequent data analysis and disaster warning.

[0052] Example 4

[0053] In this experimental example, in order to adapt to the water hazard monitoring scenario of the railway line built on the mountain in the basin and ensure the safety of the ground track while monitoring the rainfall, a signal transmission line 12 and a capacitive pressure sensor 13 are added to the rain gauge on the basis of Example 1.

[0054] In mountainous areas with heavy rainfall, rainwater will converge on the track, and even flood the track when the rainfall is too heavy, affecting driving safety. Therefore, the present embodiment adds a signal transmission line 12 and a capacitive pressure sensor 13. During installation, the capacitive pressure sensor 13 can be installed on the side of the ground track, and the upper part of the rain gauge can be hung on the electric pole along the line, and the capacitive pressure sensor 13 is connected to the controller 11 through the signal transmission line 12.

[0055] After the rainstorm comes, rainwater first enters the upper inner container 6, and the first float liquid level gauge 3 measures the rainfall and transmits the rainfall data to the computer through the controller 11 through signals. As the rainstorm progresses, the water level of the inner container 6 rises, and the rainwater pushes the baffle 2 into the outer container 1. At this moment, the water level in the rain gauge exceeds the set warning value, and a warning signal is issued and the alarm state is entered. Subsequently, the second float liquid level gauge 4 in the outer container 1 rises due to the buoyancy of the rainwater, and in the subsequent process, a signal is issued at all times to record the water level data.

[0056] At the same time, in order to monitor whether there are natural disasters such as mudslides or landslides along the railway, the capacitive pressure sensor 13 is activated and enters the working state after entering the alert state. When the rainfall is too heavy and the water level is over the track or the flood causes disasters such as mudslides, they will invade the track. Because the capacitive pressure sensor 13 is installed on the side of the ground track, the internal capacitance value of the sensor will change after being affected by water or other disasters, thereby sending a signal to the controller 11 through the signal transmission line 12. The controller 11 sends the electrical signal to the computer through its internal signal transmitter, and the staff will take timely measures after receiving the alarm.

[0057] After the rainstorm ends, the first and second float level gauges measure the water level changes in the inner and outer containers. When the water level is less than the set value within the time period of the timing device in the controller 11, the electronic drain valve opens the valve to discharge the rainwater in the inner and outer containers through the drain pipe 8, and then the rain gauge enters the next monitoring cycle.

[0058] Unlike the current rain gauges along the railway, which occupy a large area and are large in size, this rain gauge uses electronic components for rainfall warning, which reduces the size of the rain gauge and can also measure rainfall more accurately. At the same time, this device can be hung on high places such as electric poles along the railway, and can be widely used in mountainous areas and other areas with uneven terrain, to provide all-day warnings for sections prone to floods, improve the efficiency of flood prevention work, and accurately measure rainfall.

[0059] This embodiment is suitable for areas with large annual rainfall and frequent floods, such as Ya'an and Leshan in the western part of the Sichuan Basin. The terrain is undulating and the geological conditions are complex. As one of the rainstorm centers in western Sichuan, the precipitation is concentrated and strong, which is easy to cause floods in a short period of time, and also triggers additional disasters such as landslides, which greatly endangers the safe operation of railways.

[0060] Here’s how to use it:

[0061] First, according to the rainfall conditions and flood occurrence of the railway line in the past ten years, the high-risk sections are determined, and the rain gauge provided in this embodiment is installed on the electric poles along the railway. The instrument is divided into two parts, the upper part is the main body, which can monitor the rainfall in real time and alarm after being installed on the electric poles on the side of the line; the lower part is a capacitive pressure sensor 13 for water level monitoring, which can be installed on the side of the railway track or in the drainage ditch of the line according to the situation of the section. Most of the drainage ditches of my country's railways are arranged on both sides of the line. It is difficult to avoid the mud, sand or leaves and other debris carried in the water blocking the drainage outlet during normal drainage, causing the water level in the drainage ditch to increase greatly. If the capacitive element for water level monitoring is installed in the drainage ditch, it can be cleared in time when the drainage ditch is blocked to prevent the occurrence of floods. If some railway lines are already in a section with higher terrain and no drainage ditches are set, the lower part can be installed on the side of the railway track to replace the track circuit for water level monitoring.

[0062] The layout can be adapted to local conditions. In high-risk areas, such as railway lines built along mountains or railway lines in low-lying terrain, the density of the rain gauges can be appropriately increased to provide timely warnings when floods occur. In other areas with lower flood risk values, rainfall measurement data points can be selected and measurements can be taken at key points.

[0063] The above embodiments are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A float type railway line rain gauge, comprising a sealed outer container, characterized in that: An inner container is arranged inwardly at the top of the outer container, and a baffle which can rotate toward the inner part of the outer container is arranged on the top of the side wall of the inner container. When the water level of the inner container exceeds the height of the baffle, the baffle rotates and water flows into the outer container outside. A float level gauge is arranged in the inner container and / or the outer container. The float level gauge transmits the measured liquid level data to the controller in real time. The controller sends a corresponding rainfall warning signal to the outside according to whether the liquid level data exceeds a preset warning water level threshold. An electronic drain valve is arranged at the bottom of the inner and outer containers. The controller controls the electronic drain valve to drain water and accumulate rainfall data when the water is about to be fully loaded, or to start drainage at a fixed time.

2. The float type railway line rain gauge according to claim 1, characterized in that: When a float liquid level gauge is provided only in the outer container or a float liquid level gauge is provided only in the inner container, the volume of the inner container is set as the warning rainfall.

3. The float type railway line rain gauge according to claim 1, characterized in that: The controller is connected to a capacitive pressure sensor via a signal transmission line. The capacitive pressure sensor is arranged on the side of a railway track or in a drainage ditch of the line to monitor whether the accumulated water is higher than the position of the capacitive pressure sensor and transmit the detection signal to the controller.

4. The float type railway line rain gauge according to claim 1, characterized in that: When the water volume in the inner container reaches a first warning water level, which is 80% of its volume, a first early warning alarm is triggered; when the water volume in the outer container reaches a second warning water level, which is 30% of its volume, a second early warning alarm is triggered.

5. The float type railway line rain gauge according to any one of claim 1, characterized in that: The lower part of the outer container is cylindrical, and the top part is semi-conical.

6. A measurement method of a float-type railway line rain gauge according to any one of claims 1 to 5, characterized in that: The inner and outer containers are both provided with float level gauges, the float level gauge of the inner container is a first float level gauge, and the float level gauge of the outer container is a second float level gauge, comprising the following steps: S1: When it rains, the inner container first receives rainwater, and when the controller measures the liquid level of the first float level gauge to the first warning water level, a corresponding first warning operation is performed; S2: When the rainfall exceeds the volume of the inner container, the rainwater enters the outer container through the baffle, and the controller measures the liquid level of the second float level gauge to the second warning water level, and performs a corresponding second warning operation; when the second float level gauge measures that the outer container is about to be full, the controller opens two electronic drain valves to drain water, and the controller accumulates and records rainfall data; S3: When the water level change value of the inner and outer containers is less than the set threshold value within a preset time period, the two electronic drain valves are opened for drainage at a fixed time and then closed, and then enter the next rainfall detection cycle.

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