Underwater foundation stone monitoring and sensing equipment

Abstract

The utility model discloses an underwater foundation stone monitoring and sensing device which comprises buried angle steel, a protective shell, a clinometer, three water pressure gauges and a junction box. The buried angle steel is vertically buried in the underwater root stone to be monitored, and the protective shell is located over the buried angle steel; the clinometer, the three water pressure gauges and the waterproof junction box are all positioned in the protective shell; the clinometer is vertically mounted on the inner side of the upper cover of the protective shell and is used for measuring the inclination angle of the protective shell; the water pressure gauge is horizontally installed on the side wall of the protective shell in the circumferential direction, and a probe of the water pressure gauge is flush with the outer wall of the protective shell. The junction box is sealed. The underwater root stone monitoring and sensing device can sense displacement, loss and collapse conditions of a dam slope and underwater stones in the first time, synchronously collect field water pressure data caused by water flow, and provide first-hand timely, accurate and reliable field data information for automatic monitoring of root stone collapse.

Description

Technical Field

[0001] The utility model relates to the technical field of root stone monitoring, and in particular to an underwater root stone monitoring sensing device. Background Art

[0002] Rivers with a lot of sediment will form hanging rivers in the downstream. In order to control rivers with a lot of sediment, many dams are usually built according to the river flow to regulate the water flow. It is extremely important to prevent the dam from breaking. The dam bank will quickly expand in a short period of time after the danger occurs. Early detection and early rescue are crucial. In order to carry out information-based supervision of important dangerous works, control and guidance and other water conservancy projects, it is necessary to develop and lay a timely and reliable river project dam bank danger monitoring and early warning alarm system to improve the detection capability. Modern electronic equipment and automatic control transmission systems are used to monitor the root stone status, which is presented in real time on the monitoring interface, which is convenient for early detection and early treatment, and wins precious time for flood prevention and rescue.

[0003] The problem of dam bank danger is ultimately due to the root protection problem. The root stone loss is the fundamental reason for the danger of dangerous dam bank. Reducing the root stone loss can reduce the danger. In order to eliminate the danger caused by the root stone loss in time, it is necessary to give accurate and rapid warning of the root stone loss and timely rescue. In flood prevention and rescue, patrolling the embankment and checking for dangers is an extremely important task. The annual patrol and inspection of dam dangers consumes a lot of manpower and material resources. Even so, it is inevitable that there will be cases of missed inspections and missed reports, which will cause small dangers to become big dangers and endanger the safety of flood control projects.

[0004] The invention with the publication number CN218297218U discloses a root stone detection device for the Yellow River embankment, including a base, a spring welded on the upper end of the base, a detection platform welded on the upper end of the spring, an inclination sensor arranged on the detection platform, a steel wire rope arranged around the detection platform, the steel wire rope is fixedly connected to the root stone, the base is fixed on the root stone platform of the Yellow River embankment, three steel wire ropes are respectively connected to a root stone, when the root stone moves or gets lost, the steel wire rope pulls the device, the device spring tilts, the inclination sensor collects tilt data, the data is transmitted to the system platform of the main control room through the 485 protocol, and the system platform makes an early warning and forecast disposal. The invention with the publication number CN116698109A discloses a root stone detection device for the Yellow River embankment and a method of using the same, including a combination plate and a center plate, both sides of the top of the center plate and the top of the combination plate are fixedly installed with a coil spring barrel, a coil spring is arranged inside the coil spring barrel, a nylon bag is wound around the outside of the coil spring, and a steel wire rope is fixedly connected to one end of the nylon bag. When the river bank deforms or collapses, the connection head will move or come out from the inside of the river bank, so that it will no longer be stressed or the stress will be reduced, thus restoring the deformation, and expanding outward, so that the nylon bag wrapped on the outermost side of the coil spring will contact the contact probe, and the contact probe will transmit the information to the connector, and then transmit it to the connection port A through the connection port B, and finally the corresponding indicator light on the front of the display will light up, so that the staff can detect the river bank root stone in time, and can timely discover the dangers such as dam bank collapse caused by the loss of the root stone. However, both of them need to rely on springs, the structural stability is poor, the data accuracy is low, and maintenance is difficult. Moreover, neither of them involves the measurement of the water pressure gauge. The monitoring center can only know the state of the root stone loss, and cannot accurately obtain the relevant data on the cause of the root stone loss. Summary of the invention

[0005] The purpose of the utility model is to provide an underwater root stone monitoring and sensing device, which can sense the displacement, loss and collapse of the dam slope and underwater stones in the first time, synchronously collect on-site water pressure data under different water flow rates, and automatically monitor the root stone collapse to provide first-hand, timely, accurate and reliable on-site data information; at the same time, the whole machine adopts a modular design, and the body is sealed with glue to be waterproof and moisture-proof, which can ensure reliable and stable operation in different environments, facilitate field management, reduce human damage, and is conducive to promotion and application.

[0006] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0007] The utility model discloses an underwater root stone monitoring and sensing device, which comprises an underwater buried angle steel, a protective shell, an inclinometer, three water pressure gauges and a junction box;

[0008] The buried angle steel is vertically buried inside the underwater root stone to be monitored, and the protective shell is located directly above the buried angle steel;

[0009] The inclinometer, three water pressure gauges and waterproof junction box are all located inside the protective shell; the inclinometer is vertically installed on the inner side of the upper cover of the protective shell to measure the inclination angle of the protective shell; the three water pressure gauges are horizontally installed on the side wall of the protective shell along the circumferential direction, and their probes are flush with the outer wall of the protective shell to measure the water pressure caused by the water flow at the location;

[0010] The cables of the inclinometer and three water pressure gauges are gathered in a junction box and then connected to a signal processor terminal located on the shore via a waterproof cable; the junction box is sealed.

[0011] Furthermore, the protective shell is installed on the buried angle steel through the protective shell base;

[0012] The protective shell is generally cylindrical, and is divided into a protective shell upper cover, a protective shell body, and a protective shell base;

[0013] The main body of the protective shell is in the shape of a hollow cylinder without a cover. The base of the protective shell is welded by a hollow cylinder with a bottom cover and an angle steel. The top of the bottom cover of the protective shell base is in the shape of a circular groove, and the inner circle size of the circular groove is matched with the outer circle size of the main body of the protective shell. Four through holes are evenly distributed on the circumference of the base cylinder and nuts are welded on the outside. It is connected to the main body of the protective shell by the tightening force of the bolts, and the angle between the two sides can be freely adjusted.

[0014] Furthermore, an angle steel with an adjustable function is vertically welded under the base of the protective shell; two waist-round through holes are opened on each side of the angle steel with an adjustable function, and the long side of the waist-round holes is horizontal; two waist-round through holes are also opened on each side of the buried angle steel, and the short side of the waist-round holes is horizontal; the waist-round holes of the two angle steels have the same center distance, and the size of the angle steel under the base of the protective shell and the distance from the center of the waist-round hole to the top are slightly larger than those of the buried angle steel; the two angle steels are connected by bolts and nuts; the two angle steels can adjust the angle between each other within a range of about ±5° in the four directions of front, back, left and right, and no interference will occur between the angle steels at this time. After the angle is adjusted, due to the vertical waist-round holes, the holes can still fit together, for example, after rotating one side, a gasket is added to the other side and they can be tightened together; the adjustment method can enable the protective shell to be vertically set underwater.

[0015] Furthermore, a leveling bubble is provided at the center of the outer side of the upper cover of the protective shell;

[0016] Furthermore, the upper cover of the protective shell is arranged above the protective shell body, and a circular groove is arranged below the upper cover, and the inner circle size of the circular groove is adapted to the outer circle size of the protective shell body; the upper cover of the protective shell is arranged above the protective shell body, and four through holes are evenly distributed on the side of the upper cover and nuts are welded, and the upper cover of the protective shell is fixed to the protective shell by tightening the bolts and nuts.

[0017] Further, the water pressure gauge is horizontally installed in the protective shell through a pressure gauge protection tube;

[0018] The pressure gauge protection tube includes a connecting base and an extension tube; a hole is opened on the side wall of the protection shell; the connecting base includes a first sleeve and a second sleeve connected in sequence, and the inner diameter of the second sleeve is larger than the inner diameter of the first sleeve;

[0019] The top end of the first sleeve away from the second sleeve is fixed on the side wall of the protective shell and faces the hole;

[0020] The first sleeve is provided with a thread inside, which is matched with the screw of the water pressure gauge, so that the screw of the water pressure gauge is fixed in the first sleeve, and there is a gap between the second sleeve and the water pressure gauge;

[0021] The outer side of the extension tube and the inner side of the second sleeve are provided with matching threads, and the extension tube is screwed into the gap, and the water pressure gauge is wrapped inside the extension tube by pressing the outer hexagon of the water pressure gauge.

[0022] Furthermore, the first sleeve is fixed to the side wall of the protective shell by welding.

[0023] Furthermore, the three water pressure gauges are arranged in sequence from top to bottom, with an angle of 120° between each two.

[0024] Furthermore, the probe of the water pressure gauge located in the middle faces the water flow.

[0025] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0026] First, the underwater root stone monitoring and sensing equipment of the utility model can sense the displacement, loss and collapse of the dam slope and underwater stones in the first time, and simultaneously collect on-site water pressure data. It can grasp the stress state of the root stones in different dam slope areas and the surrounding water flow rate through computer conversion, and automatically monitor the collapse of root stones to provide first-hand, timely, accurate and reliable on-site data information, which is convenient for the staff to fully grasp the relevant data on the loss of root stones and analyze the situation of the loss of root stones.

[0027] Secondly, the underwater root stone monitoring and sensing equipment of the utility model has low equipment cost and can be installed, operated and maintained by one person through optimized structural design. At the same time, considering that the equipment is in a complex underwater environment for a long time, all parts of the equipment can be replaced individually and completed by one person. For example, a split design is adopted to deploy the sensor device and the signal processor terminal separately, and a compact design is performed, so that the equipment can be installed and disassembled by one person. Moreover, the sensor protective shell and the buried angle steel, and the sensor protective tube and the sensor are all split and detachable structures, which are convenient for maintenance and replacement in the later stage. To replace the sensor, you only need to replace a sealed junction box and fill it with sealant.

[0028] Third, the underwater root stone monitoring and sensing device of the utility model is powered and outputs MODBUS protocol data through a waterproof four-core cable, so that users can view and warn of on-site data.

[0029] Fourthly, the underwater root stone monitoring and sensing equipment of the utility model dynamically monitors the changes of water pressure in three directions through three water pressure gauges and dynamically monitors the two-dimensional deformation of the structure through the servo sensor in the inclinometer. If the inclination angle or water pressure changes drastically in a short period of time, an early warning will be issued, and the collapse and displacement of the dam slope and underwater stones can be sensed at the first time.

[0030] Fifth, the underwater root stone monitoring and sensing device of the utility model has a simple connection between the device body and the buried angle steel, which only requires screws and gaskets, and the device is easy to level to ensure the accuracy of subsequent data monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of the underwater root stone monitoring and sensing device of the utility model;

[0032] Figure 2 This is a schematic diagram of the interior of the protective shell of the utility model;

[0033] Figure 3 This is a schematic diagram of the installation method of the underwater root stone monitoring and sensing device of the utility model;

[0034] Figure 4 It is a schematic diagram of the connection method between the protective shell and the buried angle steel of the utility model;

[0035] Figure 5 It is a structural schematic diagram of the pressure gauge protection tube of the utility model.

[0036] Figure numerals: 1. Leveling bubble; 2. Protective shell cover; 3. Inclinometer (tilt sensor); 4. Protective shell body; 5. Pressure gauge; 6. Head end of pressure gauge protection tube; 7. Tail end of pressure gauge protection tube; 8. Liquid level air guide four-core cable; 9. Protective shell base; 10. Buried angle steel; 11. Junction box. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings.

[0038] See also Figures 1 to 3 The utility model discloses an underwater root stone monitoring and sensing device, which comprises an underwater buried angle steel, a protective shell, an inclinometer, three water pressure gauges and a junction box;

[0039] The buried angle steel is vertically buried inside the underwater root stone to be monitored, and the protective shell is located directly above the buried angle steel;

[0040] The inclinometer, three water pressure gauges and waterproof junction box are all located inside the protective shell; the inclinometer is vertically installed on the inner side of the upper cover of the protective shell to measure the inclination angle of the protective shell; the three water pressure gauges are horizontally installed on the side wall of the protective shell along the circumferential direction, and their probes are flush with the outer wall of the protective shell to measure the water pressure caused by the water flow at the location;

[0041] The cables of the inclinometer and three water pressure gauges are connected to the signal processor terminal on the shore via waterproof cables after being gathered in the junction box; the junction box is sealed. Preferably, the output signal lines of the inclinometer (tilt sensor) and the water pressure gauge are integrated and paralleled in the junction box, and then led out from the protective housing via a 4-core shielded signal cable. Inside the junction box, a filling seal is provided to prevent moisture and humidity, thereby ensuring the stability and safety of the sensor and taking into account the convenience of installation and subsequent maintenance.

[0042] The utility model deploys the underwater root stone monitoring and sensing equipment separately from the signal processor terminal, and integrates the sensor in a protective shell, inserts it into the gap of the flat stone through the buried angle steel, or places it in the root stone and puts it below the low water line, so that it is integrated with the root stone. Usually, the underwater root stone monitoring and sensing equipment is placed underwater 2 to 3 meters away from the shore water surface. When in use, it is connected to the signal processor terminal on the water through a connecting line. When the stones on the dam bank slope are displaced and collapsed by flood erosion, the root stone moves, vibrates or the cable is disconnected, and the signal processor terminal can detect the state of the root stone in time, so as to provide a timely and accurate warning for the collapse of the flat stone. At the same time, through the changes in water pressure in three different directions, the stress state of the dam head root stone is grasped, providing a theoretical basis for the warning of the loss of the dam head root stone.

[0043] In order to obtain more accurate water pressure data, three water pressure gauges are arranged from top to bottom, with an angle of 120° between each other. Preferably, the probe of the water pressure gauge in the middle faces the water flow. In order to fine-tune the direction of the water pressure gauge, the structure of the protective shell is optimized in this embodiment. Specifically, the protective shell is installed on the buried angle steel through the protective shell base; the protective shell is cylindrical,

[0044] The main body of the protective shell is in the shape of a hollow cylinder without a cover. The base of the protective shell is welded by a hollow cylinder with a bottom cover and an angle steel. The top of the bottom cover of the protective shell base is in the shape of a circular groove, and the inner circle size of the circular groove matches the outer circle size of the main body of the protective shell. There are 4 through holes evenly distributed on the circumference of the base cylinder and nuts are welded on the outside. It is connected to the main body of the protective shell by the tightening force of the bolts, and the angle between the two sides can be freely adjusted. In this embodiment, the main body of the protective shell can be rotated to a suitable angle in the circular groove of the base of the protective shell and then fixed by a connecting piece, so that the staff can quickly complete the adjustment of the direction of the water pressure gauge.

[0045] Similarly, the upper cover of the protective shell is arranged above the protective shell, and a plurality of second through holes are opened on its side and nuts are welded, and the corresponding bolts pass through the second through holes one by one to fix the upper cover of the protective shell on the protective shell, so that the upper cover of the protective shell can be adjusted and rotated at will, so that the inclinometer located thereunder can be smoothly arranged in the gap between the water pressure gauges to avoid structural interference.

[0046] See also Figure 4 , an angle steel with an adjustment function is vertically connected below the base of the protective shell; the angle steel with an adjustment function and the corresponding positions of the buried angle steel are provided with a plurality of connecting waist-round through holes, which are connected together by 4 pairs of bolts and nuts, and the angle between the two angle steels is adjusted by adjusting the fit between the waist-round holes, so that the protective shell is vertically set underwater. When installing the buried angle steel, some angle inclination is inevitable. Usually, the inclination angle of the buried angle steel is not too large, only a few degrees, but this will also cause errors in the final measured data. In order to solve this problem, this embodiment proposes that after the buried angle steel is buried, the angle between the two angle steels is adjusted to make the protective shell vertically set underwater. In order to facilitate the observation of the vertical state of the inclinometer, a leveling bubble is provided on the inner side of the upper cover of the protective shell.

[0047] Since the water pressure gauge is always under the impact of water flow, in order to protect the water pressure gauge, refer to Figure 5, the water pressure gauge is horizontally installed in the protective shell through the pressure gauge protection tube; the pressure gauge protection tube includes a connecting base and an extension tube; a hole is opened on the side wall of the protective shell; the connecting base includes a first sleeve and a second sleeve connected in sequence, and the radius of the second sleeve is greater than the radius of the first sleeve; the first sleeve is fixed on the side wall of the protective shell away from the top of the second sleeve and is opposite to the hole, for example, it can be fixed on the side wall of the protective shell by welding. The inner side of the first sleeve is provided with an internal thread, which is adapted to the screw of the water pressure gauge, so that the screw of the water pressure gauge is fixed in the first sleeve, and there is a gap between the second sleeve and the water pressure gauge; the outer side of the extension tube and the inner side of the second sleeve are provided with matching threads, and the extension tube is screwed into the gap, and the water pressure gauge is wrapped inside the extension tube by pressing the outer hexagon of the water pressure gauge. At the same time, there are 3 evenly distributed M4 tightening screws at the tail of the extension tube, which further enhances the stability of the water pressure gauge. Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0048] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An underwater root stone monitoring and sensing device, characterized in that: The underwater root rock monitoring and sensing device includes buried angle steel, a protective shell, an inclinometer, three water pressure gauges and a junction box located underwater; The buried angle steel is vertically buried inside the underwater root stone to be monitored, and the protective shell is located directly above the buried angle steel; The inclinometer, three water pressure gauges and waterproof junction box are all located inside the protective shell; The inclinometer is installed vertically under the upper cover of the protective shell to measure the inclination angle of the protective shell; three water pressure gauges are installed horizontally on the side wall of the protective shell along the circumferential direction, and their probes are flush with the outer wall of the protective shell to measure the water pressure caused by the water flow at the location; The cables of the inclinometer and the water pressure gauge are gathered in the junction box and then connected to the signal processor terminal located on the shore via a waterproof cable; the junction box is sealed.

2. The underwater root stone monitoring and sensing device according to claim 1 is characterized in that: The protective shell is installed on the buried angle steel through the angle steel welded at the base of the protective shell; The main body of the protective shell is in the shape of a hollow cylinder without a cover. The base of the protective shell is welded by a hollow cylinder with a bottom cover and an angle steel. The top of the bottom cover of the protective shell base is in the shape of a circular groove, and the inner circle size of the circular groove is matched with the outer circle size of the main body of the protective shell. Four through holes are evenly distributed on the circumference of the base cylinder and nuts are welded on the outside. It is connected to the main body of the protective shell by the tightening force of the bolts, and the angle between the two sides can be freely adjusted.

3. The underwater root stone monitoring and sensing device according to claim 2 is characterized in that: An angle steel with an adjustable function is vertically welded below the base of the protective shell; two waist-round through holes are respectively opened on both sides of the angle steel with an adjustable function, and the long sides of the waist-round holes are in the horizontal direction; two waist-round through holes are also respectively opened on both sides of the buried angle steel, and the short sides of the waist-round holes are in the horizontal direction; the waist-round holes of the two angle steels have the same center distance, and the size of the angle steel below the base of the protective shell and the distance from the center of the waist-round hole to the top are both greater than those of the buried angle steel; the two angle steels are connected by bolts and nuts; the two angle steels can adjust the angle between each other within the range of ±5° in the four directions of front, back, left, and right, so that the protective shell can be vertically set underwater.

4. The underwater root stone monitoring and sensing device according to claim 2 is characterized in that: A leveling bubble is arranged at the center position above the upper cover of the protective shell.

5. The underwater root stone monitoring and sensing device according to claim 1 is characterized in that: A circular groove is arranged at the lower end of the upper cover of the protective shell, and the inner circle size of the circular groove is matched with the outer circle size of the main body of the protective shell; the upper cover of the protective shell is arranged above the main body of the protective shell, and four through holes are evenly arranged on the side of the upper cover and welded with nuts, and the upper cover of the protective shell is fixed to the protective shell by tightening the bolts and nuts.

6. The underwater root stone monitoring and sensing device according to claim 1, characterized in that: The water pressure gauge is horizontally installed in the protective shell through a pressure gauge protection tube; The pressure gauge protection tube includes a connecting base and an extension tube; a hole is opened on the side wall of the protection shell; the connecting base includes a first sleeve and a second sleeve connected in sequence, and the radius of the second sleeve is greater than the radius of the first sleeve; The top end of the first sleeve is fixed on the side wall of the protective shell and faces the hole; The first sleeve is provided with a thread inside, which is matched with the screw of the water pressure gauge, so that the screw of the water pressure gauge is fixed in the first sleeve, and there is a gap between the second sleeve and the water pressure gauge; The outer side of the extension tube and the inner side of the second sleeve are provided with matching threads, and the extension tube is screwed into the gap to wrap the water pressure gauge inside the extension tube.

7. The underwater root stone monitoring and sensing device according to claim 6 is characterized in that: The first sleeve is fixed to the side wall of the protective shell by welding.

8. The underwater root stone monitoring and sensing device according to claim 1 is characterized by: The three water pressure gauges are arranged in sequence from top to bottom, with an angle of 120° between each two.

9. The underwater root stone monitoring and sensing device according to claim 8, characterized in that: The probe of the water pressure gauge located in the middle is facing the water flow.

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