Section flow measuring device and using method thereof

Abstract

The invention relates to the technical field of section flow measuring devices, in particular to a section flow measuring device and a using method thereof.The section flow measuring device comprises a flow measuring section and a flow measuring room installed on the flow measuring section, a plurality of sets of measuring vertical line markers are arranged in the flow measuring section, and a track is fixedly connected to the flow measuring section; a flow measuring vehicle is arranged in the flow measuring room, the bottom of the flow measuring vehicle is rotationally connected with a plurality of sets of walking wheels, the walking wheels are located on the track, a driving assembly used for driving the walking wheels to rotate is arranged on the flow measuring vehicle, a vertical frame is fixedly connected to the flow measuring vehicle, and a chain releasing assembly is arranged outside the vertical frame. A chain is arranged outside the chain releasing assembly, one end of the chain is fixedly connected with a mounting frame, a speed measuring instrument and a mud level meter are fixedly connected to the mounting frame, and a chain locking assembly is further arranged outside the vertical frame.

Description

Technical Field

[0001] The present invention relates to the technical field of cross-sectional flow measuring devices, and in particular to a cross-sectional flow measuring device and a use method thereof. Background Art

[0002] In a river or reservoir system, accurate cross-section flow measurement can provide flow data at different locations of the river and reservoir. For rivers, by measuring flow at multiple sections, the amount of water in different intervals in the entire basin can be calculated, so as to rationally plan the allocation of water resources. For example, in the dry season, after knowing the flow of each section, it can be determined which areas need priority water supply and which areas can be adjusted to save water. For reservoirs, cross-section flow measurement helps to determine the inflow and outflow. Inflow flow data is very critical to the reservoir's water storage plan. According to the size and change trend of the inflow flow, it can be determined whether the reservoir needs to open the gate to release water or increase the water storage; the determination of the outflow flow is related to the downstream water demand and ecological flow guarantee.

[0003] There are many kinds of automatic cross-sectional flow measurement equipment on the market, which can be divided into invasive automatic measurement equipment and non-invasive automatic measurement equipment according to the measurement method. Non-invasive cross-sectional flow measurement equipment uses radar waves to measure the surface flow field, and is applied to standard river channel measurements where the cross-sectional changes of the river channel are not large or there is no siltation. The invasive measurement form mainly uses a cableway or a measuring bridge to cross the river section, and the collection equipment is lowered into the water for contact measurement. Due to the unique geographical and natural environment, the river channel terrain is complex and changeable. At present, the main method of measuring cross-sectional flow in the market is the cableway and measuring bridge in the invasive measurement. Due to the high sand content and slow flow rate of the river channel, the main channel is silted up, and the cross-sectional flow of the river channel needs to be measured.

[0004] In the prior art, a Chinese patent with announcement number: CN 212693009 U discloses a multi-directional flow measuring device for a channel section, which includes a frame, and wheels at the bottom of the frame. The wheels are connected to a driving device and drive the flow measuring device to automatically move along both sides of the channel. A detection device is installed on the frame through a moving component on the frame. A controller is also installed on the frame. The detection device can reciprocate on both sides of the channel section and along the channel direction for multi-directional flow measurement.

[0005] In this patent, when the suspension rope is released, it will be tilted and offset due to the impact of the water flow, resulting in a large error in measurement. Summary of the invention

[0006] In view of the technical problem in the patent mentioned in the background technology that when the suspension rope is released, it will be tilted and offset under the impact of the water flow, resulting in a large error during measurement, the present invention provides a cross-sectional flow measuring device and a method for using the same.

[0007] The technical solution adopted by the present invention is: a cross-sectional flow measuring device and a method of using the same, comprising a flow measuring section and a flow measuring room installed on the flow measuring section, wherein the flow measuring section is provided with a plurality of groups of measuring vertical line markers, and the flow measuring section is fixedly connected to a track; a flow measuring vehicle is provided in the flow measuring room, and the bottom of the flow measuring vehicle is rotatably connected to a plurality of groups of running wheels, the running wheels are located on the track, the flow measuring device is provided with a driving assembly for driving the running wheels to rotate, a stand is fixedly connected to the flow measuring vehicle, a chain release assembly is provided on the outside of the stand, a chain is provided on the outside of the chain release assembly, one end of the chain is fixedly connected to a mounting frame, a tachometer and a mud level meter are fixedly connected to the mounting frame, and a chain locking assembly is also provided on the outside of the stand.

[0008] After adopting the above technical solution, the flow measuring vehicle carries the speed meter and moves along the track. When encountering the measuring vertical line marker, the flow measuring vehicle stops moving and measures the water level and water depth (silt thickness). According to the measured water level and water depth data, the current vertical line flow velocity measurement method is determined. The flow measuring vehicle lowers the flow meter to a fixed depth to perform single-point flow velocity measurement or layered flow velocity measurement. After the measurement is completed, the flow meter is put away and the flow measuring vehicle is started to the next measuring point. After all measuring points are measured, the flow measuring vehicle calculates the partial average flow velocity and partial area of ​​each vertical line, calculates the partial flow, and accumulates the partial flow to obtain the cross-sectional flow. Through the setting of the chain locking component, when the chain is released to drive the speed meter and mud level meter to move downward for measurement, the chain can be kept straight, and the chain will not tilt, thereby avoiding errors.

[0009] In one embodiment, the driving assembly is a first motor fixedly connected to the flow measuring vehicle, the output end of the motor and the outside of the rotating rod are fixedly connected with a pulley, and the outside of the pulley is provided with a belt.

[0010] After adopting the above technical solution, the first motor drives the pulley to rotate, and the pulley can drive the running wheel to rotate through the cooperation of the belt, so that the flow measuring vehicle can run on the track.

[0011] In one embodiment, the chain release assembly includes a second motor and a third motor fixedly connected to the outside of the stand, the output end of the second motor is fixedly connected to a winding roller, the output end of the third motor is fixedly connected to a sprocket, the chain is wound around the outside of the winding roller, and one end of the chain passes through the sprocket.

[0012] After adopting the above technical solution, the chain can be wound and stored by the winding roller, and the chain can be guided and released by the setting of the sprocket.

[0013] In one embodiment, the chain includes a first rotating plate and a second rotating plate, a rotating shaft is provided between the first rotating plate and the second rotating plate, the first rotating plate and the second rotating plate are rotatably connected to each other, and a positioning hole is provided on the outside of the first rotating plate.

[0014] In one embodiment, the chain locking assembly includes a guide seat fixedly connected to the outside of the second rotating plate, a fixed frame fixedly connected to the outside of the guide seat, and a limiting column passing through the guide seat, the outside of the limiting column is fixedly connected to a magnet ring, the outside of the fixing frame is fixedly connected to an iron plate, the outside of the limiting column is fixedly connected to a sliding rod, and one end of the sliding rod is fixedly connected to a third magnet after passing through the fixing frame.

[0015] In one embodiment, the chain locking assembly also includes two side plates fixedly connected to the outside of the stand, and both sides of the side plates are fixedly connected to limit rollers. The outside of the side plates is fixedly connected to a first magnet and a second magnet, and the second magnet and the third magnet are arranged with the same poles to repel each other, and the first magnet and the third magnet are arranged with opposite poles to attract each other.

[0016] After adopting the above technical scheme, the specific measurement operation is as follows: during the chain release process, the second magnet and the third magnet are arranged with like poles repelling each other, so that under the action of repulsive force, the slide rod drives the limit column to slide into the positioning hole, thereby locking the position of the first rotating plate and the second rotating plate, allowing the chain to vertically enter the river channel, and at the same time the chain can be limited and supported by two limit rollers, thus preventing the chain from deviating in the river channel and reducing the error generated in the measurement process; and when the winding roller collects the chain, since the first magnet and the third magnet are arranged with opposite poles attracting each other, during the chain collection process, the limit column can slide outward and disengage from the positioning hole through the mutual adsorption of the first magnet and the third magnet, so that the first rotating plate and the second rotating plate can rotate, and then be collected by the winding roller.

[0017] In one of the embodiments, the positioning hole is used in conjunction with a limiting column, and a magnetic block is fixedly connected in the positioning hole.

[0018] After adopting the above technical solution, the magnetic block is used to adsorb with the limiting column.

[0019] In one embodiment, a cylinder is fixedly connected to the outside of the flow measuring vehicle, and a suction cup is fixedly connected to the output end of the cylinder.

[0020] In one embodiment, the suction cup is an electric vacuum suction cup.

[0021] In one of the embodiments, a lighting lamp is fixedly connected to the exterior of the flow measuring vehicle.

[0022] After adopting the above technical solution, when the flow measuring vehicle stops, the suction cup is driven by the cylinder to contact and absorb the track, so that the position of the flow measuring vehicle can be fixed. In addition, a lighting lamp is fixedly connected to the outside of the flow measuring vehicle for lighting.

[0023] In one embodiment, a method for using a cross-sectional flow measuring device includes the following steps:

[0024] Step 1: Start the first motor and the second motor to release the chain. During the chain release process, the mounting frame drives the speed meter and the mud level meter into the water.

[0025] Step 2: During the chain release process, the second magnet and the third magnet are set with the same poles repelling each other, so that under the action of the repulsive force, the slide rod drives the limit column to slide into the positioning hole, thereby locking the positions of the first rotating plate and the second rotating plate, allowing the chain to vertically enter the river channel. At the same time, the chain can be limited and supported by the two limit rollers, so that the chain can be prevented from deflecting in the river channel, reducing the error generated during the measurement process;

[0026] Step three, when the winding roller receives the chain, since the first magnet and the third magnet are arranged with opposite poles attracting each other, during the chain receiving process, the first magnet and the third magnet are attracted to each other, so that the limit post can slide outward and disengage from the positioning hole, so that the first rotating plate and the second rotating plate can rotate and be received by the winding roller again.

[0027] The beneficial effects of the present invention are:

[0028] 1. Compared with the prior art, in the present invention, the flow measuring vehicle carries the speed meter and moves along the track. When encountering the measuring vertical line marker, the flow measuring vehicle stops moving and measures the water level and water depth (silt thickness). According to the measured water level and water depth data, the current vertical line flow velocity measurement method is determined. The flow measuring vehicle lowers the flow meter to a fixed depth to perform single-point flow velocity measurement or layered flow velocity measurement. After the measurement is completed, the flow meter is put away and the flow measuring vehicle is started to the next measuring point. After all the measuring points are measured, the flow measuring vehicle calculates the partial average flow velocity and partial area of ​​each vertical line, calculates the partial flow rate, and accumulates the partial flow rates to obtain the cross-sectional flow rate. Through the setting of the chain locking assembly, when the chain is released to drive the speed meter and mud level meter to move downward for measurement, the chain can be kept straight, and the chain will not be tilted, thereby avoiding errors.

[0029] 2. Compared with the prior art, in the present invention, during the chain release process, the second magnet and the third magnet are arranged with like poles repelling each other, so that under the action of the repulsive force, the sliding rod drives the limiting column to slide into the positioning hole, thereby locking the positions of the first rotating plate and the second rotating plate, allowing the chain to vertically enter the river channel, and at the same time the chain can be limited and supported by the two limiting rollers, thus preventing the chain from deviating in the river channel and reducing the error generated in the measurement process; and when the winding roller collects the chain, since the first magnet and the third magnet are arranged with opposite poles attracting each other, during the chain collection process, the limiting column can slide outward and disengage from the positioning hole through the mutual adsorption of the first magnet and the third magnet, so that the first rotating plate and the second rotating plate can rotate, and then be collected by the winding roller, thereby realizing the switching of the chain state. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the flow measurement room in the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the track in the present invention;

[0032] Figure 3 It is a structural schematic diagram of the flow measuring vehicle in the present invention;

[0033] Figure 4 It is a schematic diagram of the three-dimensional structure of the flow measuring vehicle in the present invention;

[0034] Figure 5 It is a structural schematic diagram of the stand in the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the chain in the present invention;

[0036] Figure 7 It is a schematic diagram of the three-dimensional structure of the chain in the present invention;

[0037] Figure 8 It is a structural schematic diagram of the fixing frame in the present invention;

[0038] Fig. 9 It is a schematic diagram of the structure of the side plate in the present invention.

[0039] The markings in the figure are:

[0040] 100. Flow measurement room;

[0041] 200, flow measuring vehicle; 2001, walking wheel; 2002, rotating rod; 2003, first motor; 2004, pulley; 2005, belt; 2006, stand;

[0042] 300, flow measurement section; 3001, silt;

[0043] 400, track;

[0044] 500. Measuring vertical line marker;

[0045] 600, cylinder; 6001, suction cup;

[0046] 700, second motor; 7001, winding roller;

[0047] 800, third motor; 8001, sprocket;

[0048] 900, chain; 9001, mounting frame; 9002, speedometer; 9003, mud level meter; 9004, side plate; 9005, first magnet; 9006, second magnet; 9007, first rotating plate; 9008, rotating shaft; 9009, second rotating plate; 90010, positioning hole; 90011, limiting roller;

[0049] 1000, fixing frame; 10001, guide seat; 10002, limiting column; 1003, magnet ring; 1004, sliding rod; 1005, iron plate; 10006, third magnet. DETAILED DESCRIPTION

[0050] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as “front”, “up”, “down”, “left”, “right”, “vertical” and “horizontal” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The following is combined with Figure 1-9 The present invention is further described.

[0053] In order to solve the problems existing in the background technology, the present application proposes the following technical solutions: a cross-sectional flow measuring device and a method of using the same, comprising a flow measuring section 300 and a flow measuring room 100 installed on the flow measuring section 300, wherein there is sludge 3001 below the flow measuring section 300, and a plurality of groups of measuring vertical line markers 500 are provided in the flow measuring section 300, and a track 400 is fixedly connected to the flow measuring section 300; a flow measuring vehicle 200 is provided in the flow measuring room 100, and a plurality of groups of running wheels 2001 are rotatably connected to the bottom of the flow measuring vehicle 200, and the running wheels 2001 are located on the track 400.

[0054] Among them, a driving component for driving the running wheel 2001 to rotate is provided on the flow measuring vehicle 200, and the driving component is a first motor 2003 fixedly connected to the flow measuring vehicle 200, and the output end of the motor and the outside of the rotating rod 2002 are fixedly connected with a pulley 2004, and the outside of the pulley 2004 is provided with a belt 2005. The first motor 2003 drives the pulley 2004 to rotate, and the pulley 2004 can drive the running wheel 2001 to rotate through the cooperation of the belt 2005, so that the flow measuring vehicle 200 can move on the track 400.

[0055] In addition, the outside of the flow measuring vehicle 200 is fixedly connected to a cylinder 600, and the output end of the cylinder 600 is fixedly connected to a suction cup 6001, which is an electric vacuum adsorption cup. When the flow measuring vehicle 200 stops, the suction cup 6001 is driven by the cylinder 600 to contact and adsorb with the track 400, so as to fix the position of the flow measuring vehicle 200. In addition, a lighting lamp is fixedly connected to the outside of the flow measuring vehicle 200 for lighting.

[0056] In this embodiment, a stand 2006 is fixedly connected to the flow measuring vehicle 200, a chain 900 release assembly is provided on the outside of the stand 2006, a chain 900 is provided on the outside of the chain 900 release assembly, one end of the chain 900 is fixedly connected to a mounting frame 9001, a speed meter 9002 and a mud level meter 9003 are fixedly connected to the mounting frame 9001, a chain 900 locking assembly is also provided on the outside of the stand 2006, the speed meter 9002 is used to measure the water flow velocity, and the mud level meter 9003 is used to detect the position of the silt 3001.

[0057] In addition, in this embodiment, a control system is also included, specifically, the control system includes a PLC control module, a serial communication module, a wireless data transmission module, a relay module, a data acquisition module, a stepper motor control module, a text display module, a power module, an automatic charging module, a monitoring alarm module, etc.;

[0058] In this embodiment, the flow measuring vehicle 200 uses Siemens S7-200 SMART series PLC to control charging. After charging is completed, the flow measuring vehicle 200 can automatically disconnect the charging power supply to prevent the battery from overcharging.

[0059] In this embodiment, the flow measuring vehicle 200 has multiple monitoring and alarm functions, which can monitor the battery power, the movement speed of the flow measuring vehicle 200, the movement obstacles of the track 400 and alarm reminders, and support software flashing alarms and local sound and light alarms. Among them, the PLC software is developed using the S7-200SMART special programming software STEP7-Micro / WINSMART and the LDA ladder diagram. The power module uses a 12V60AH battery to power the drive motor, and uses a 12V to 24V module to power the PLC controller, ultrasonic water level meter, and wireless communication module. The 12V to 48V module powers the stepper motor, and the 12V to 5V module powers the propeller flow meter, limit switch, etc.; each electrical device can be connected to the relay through the PLC to control the on and off; the serial communication module adopts a service mode, and can simultaneously support any two of the three communication modes of GPRS, 433M wireless, and 2.4G wireless, using When using 433M wireless communication, it supports remote control of handheld terminal PDA; in GPRS mode, it supports remote control of host computer and mobile phone APP; flow rate data acquisition supports propeller flowmeter, electromagnetic flowmeter, supports pulse quantity and digital quantity data input, and can set the working parameters of the flowmeter; the text display module uses Siemens TD400C text display controller, which supports 15 configurable buttons, the display screen can display 4 lines of characters, and has a display backlight, which is suitable for simple to relatively complex operation tasks; the design supports the use of text display controller to operate the flow measuring vehicle 200, which can view the working status and measurement data of the flow measuring vehicle 200, and can set the relevant working parameters of the flow measuring vehicle 200.

[0060] In this embodiment, the automatic charging module uses a contact charging method. When the battery power is lower than the set value, the flow measuring vehicle 200 moves to the charging position of the flow measuring room 100 to measure the flow. When the flow measuring vehicle 200 is not measuring the flow, it is in a standby state, waiting to execute the user's instructions, and enters the standby state again after executing the user's instructions. During the standby process, the battery power is monitored regularly. If charging is required, it automatically moves to the charging position for charging.

[0061] After the battery is fully charged, the flow measuring vehicle 200 is automatically moved to the standby position to prevent long-term charging from damaging the battery. User instructions include parameter settings, starting the measurement process, interrupting the measurement process, etc. Among them, the automatic measurement process is the most important and core workflow. The host computer control software is developed in C# language and based on the .net framework. Its main function is to realize communication, management, and setting and processing of measurement data with the flow measuring vehicle 200. The software design supports communication with the flow measuring vehicle 200 through wireless networks, RS485 serial ports, etc., and supports additional on-site video monitoring, which can remotely observe the on-site operation of the flow measuring vehicle 200 during the flow measurement process. The software supports customized report output function, and can generate measurement reports in a specified format according to the actual situation of the irrigation area.

[0062] Among them, one end of the track 400 is laid in the flow measurement room 100, and the position and number of the measuring vertical line markers 500 are determined on the track 400 according to the width of the flow measurement section 300, and the marker is installed at each measuring vertical line marker 500. The flow measurement vehicle 200 is placed on the track 400 in the flow measurement room 100. When starting the measurement, the flow measurement vehicle 200 carries the speed meter 9002 and moves along the track 400. When encountering the measuring vertical line marker 500, the flow measurement vehicle 200 stops moving and measures the water level and water depth (thickness of the silt 3001). According to the measured water level and water depth data, the current vertical line flow velocity measurement method is determined. The flow measurement vehicle 200 lowers the velocity meter to a fixed depth for single-point flow velocity measurement or layered flow velocity measurement. After the measurement is completed, the velocity meter is put away and the flow measurement vehicle 200 is started to the next measurement point. After all the measuring points are measured, the flow measuring vehicle 200 calculates the partial average flow velocity and partial area of ​​each vertical line, calculates the partial flow, and the partial flow is accumulated to obtain the cross-sectional flow.

[0063] In this embodiment, the chain 900 release assembly includes a second motor 700 and a third motor 800 fixedly connected to the outside of the stand 2006, the output end of the second motor 700 is fixedly connected to a winding roller 7001, and the output end of the third motor 800 is fixedly connected to a sprocket 8001, the chain 900 is wound around the outside of the winding roller 7001, and one end of the chain 900 passes through the sprocket 8001, wherein the chain 900 includes a first rotating plate 9007 and a second rotating plate 9009, a rotating shaft 9008 is provided between the first rotating plate 9007 and the second rotating plate 9009, the first rotating plate 9007 and the second rotating plate 9009 are rotatably connected to each other, and a positioning hole 90010 is provided on the outside of the first rotating plate 9007.

[0064] In this embodiment, the chain 900 locking assembly includes a guide seat 10001 fixedly connected to the outside of the second rotating plate 9009, a fixed frame 1000 fixedly connected to the outside of the guide seat 10001, and a limiting column 10002 passing through the guide seat 10001, the outside of the limiting column 10002 is fixedly connected with a magnet ring 1003, the outside of the fixing frame 1000 is fixedly connected with an iron plate 1005, the outside of the limiting column 10002 is fixedly connected with a sliding rod 1004, one end of the sliding rod 1004 passes through the fixing frame 1000 and is fixedly connected with a third magnet 10006, the positioning hole 90010 is used in conjunction with the limiting column 10002, and a magnetic block is fixedly connected inside the positioning hole 90010.

[0065] In this embodiment, the chain 900 locking assembly also includes two side plates 9004 fixedly connected to the outside of the stand 2006, and both sides of the side plates 9004 are fixedly connected to limiting rollers 90011. The outside of the side plates 9004 is fixedly connected to a first magnet 9005 and a second magnet 9006, and the second magnet 9006 and the third magnet 10006 are arranged with the same poles repelling each other, and the first magnet 9005 and the third magnet 10006 are arranged with opposite poles attracting each other.

[0066] The above technical solution is explained as follows: the chain 900 is released, and during the release process of the chain 900, the mounting frame 9001 drives the speed meter 9002 and the mud level meter 9003 into the water, and during the release process of the chain 900, the second magnet 9006 and the third magnet 10006 are arranged with like poles repelling each other, so that under the action of the repulsive force, the slide bar 1004 drives the limit column 10002 to slide into the positioning hole 90010 and be adsorbed and fixed to the magnetic block, thereby locking the positions of the first rotating plate 9007 and the second rotating plate 9009, allowing the chain 900 to vertically enter the river channel, and at the same time the chain 900 can be Two limiting rollers 90011 provide limiting support, thereby preventing the chain 900 from deviating in the river channel and reducing the error generated during the measurement process; when the winding roller 7001 receives the chain 900, since the first magnet 9005 and the third magnet 10006 are arranged with opposite poles attracting each other, during the receiving process of the chain 900, the limiting column 10002 can slide outward and disengage from the positioning hole 90010 through the mutual adsorption of the first magnet 9005 and the third magnet 10006, so that the first rotating plate 9007 and the second rotating plate 9009 can rotate, and then be received by the winding roller 7001.

[0067] In order for those skilled in the art to fully understand the technical solution, the method of use of this embodiment is as follows: the flow measuring vehicle 200 carries the velocity meter 9002 and moves along the track 400. When encountering the measuring vertical line marker 500, the flow measuring vehicle 200 stops moving and measures the water level and water depth (thickness of the silt 3001). According to the measured water level and water depth data, the current vertical line flow velocity measurement method is determined. The flow measuring vehicle 200 lowers the velocity meter to a fixed depth to perform single-point flow velocity measurement or stratified flow velocity measurement. After the measurement is completed, the velocity meter is put away and the flow measuring vehicle 200 is started to the next measuring point. After all measuring points are measured, the flow measuring vehicle 200 calculates the partial average velocity and partial area of ​​each vertical line, calculates the partial flow rate, and the partial flow rates are accumulated to obtain the cross-sectional flow rate;

[0068] The specific measurement operations are as follows:

[0069] The first motor 2003 and the second motor 700 are started to work, and the chain 900 is released. During the release of the chain 900, the mounting frame 9001 drives the speed meter 9002 and the mud level meter 9003 into the water. During the release of the chain 900, the second magnet 9006 and the third magnet 10006 are arranged with the same poles repelling each other. Therefore, under the action of the repulsive force, the slide bar 1004 drives the limit column 10002 to slide into the positioning hole 90010, thereby locking the positions of the first rotating plate 9007 and the second rotating plate 9009, allowing the chain 900 to vertically enter the river channel. At the same time, the chain 900 can be limited and supported by the two limit rollers 90011, so that the chain 900 can be prevented from deflecting in the river channel, reducing the error generated during the measurement process.

[0070] When the winding roller 7001 stores the chain 900, since the first magnet 9005 and the third magnet 10006 are arranged with opposite poles attracting each other, during the storage process of the chain 900, the first magnet 9005 and the third magnet 10006 can adsorb each other, so that the limit column 10002 can slide outward and disengage from the positioning hole 90010, so that the first rotating plate 9007 and the second rotating plate 9009 can rotate and be stored by the winding roller 7001 again.

[0071] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0072] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cross-section flow measuring device, comprising a flow measuring section (300) and a flow measuring chamber (100) installed on the flow measuring section (300), characterized in that: The flow measuring section (300) is provided with a plurality of groups of measuring vertical line markers (500), and the flow measuring section (300) is fixedly connected with a track (400); a flow measuring vehicle (200) is provided in the flow measuring room (100), and a plurality of groups of running wheels (2001) are rotatably connected to the bottom of the flow measuring vehicle (200), and the running wheels (2001) are located on the track (400); a driving assembly for driving the running wheels (2001) to rotate is provided on the flow measuring vehicle (200); and the flow measuring vehicle (200) is provided with a driving assembly for driving the running wheels (2001) to rotate. A stand (2006) is fixedly connected to the stand (2006), a chain (900) release assembly is arranged outside the stand (2006), a chain (900) is arranged outside the chain (900) release assembly, one end of the chain (900) is fixedly connected to a mounting frame (9001), a speed meter (9002) and a mud level meter (9003) are fixedly connected to the mounting frame (9001), and a chain (900) locking assembly is also arranged outside the stand (2006).

2. A cross-sectional flow measuring device according to claim 1, characterized in that: The driving assembly is a first motor (2003) fixedly connected to the flow measuring vehicle (200), the output end of the motor and the outside of the rotating rod (2002) are both fixedly connected with a pulley (2004), and the outside of the pulley (2004) is covered with a belt (2005).

3. A cross-section flow measuring device according to claim 2, characterized in that: The chain (900) release assembly comprises a second motor (700) and a third motor (800) fixedly connected to the outside of the stand (2006); the output end of the second motor (700) is fixedly connected to a winding roller (7001); the output end of the third motor (800) is fixedly connected to a sprocket (8001); the chain (900) is wound around the outside of the winding roller (7001); and one end of the chain (900) passes through the sprocket (8001).

4. A cross-section flow measuring device according to claim 3, characterized in that: The chain (900) comprises a first rotating plate (9007) and a second rotating plate (9009), a rotating shaft (9008) is provided between the first rotating plate (9007) and the second rotating plate (9009), the first rotating plate (9007) and the second rotating plate (9009) are rotatably connected to each other, and a positioning hole (90010) is provided on the outside of the first rotating plate (9007).

5. A cross-section flow measuring device according to claim 4, characterized in that: The chain (900) locking assembly comprises a guide seat (10001) fixedly connected to the outside of the second rotating plate (9009), a fixing frame (1000) fixedly connected to the outside of the guide seat (10001), and a limiting column (10002) penetrating the guide seat (10001), the outside of the limiting column (10002) is fixedly connected to a magnet ring (1003), the outside of the fixing frame (1000) is fixedly connected to an iron plate (1005), the outside of the limiting column (10002) is fixedly connected to a sliding rod (1004), and one end of the sliding rod (1004) passes through the fixing frame (1000) and is fixedly connected to a third magnet (10006).

6. A cross-section flow measuring device according to claim 5, characterized in that: The chain (900) locking assembly also includes two side plates (9004) fixedly connected to the outside of the stand (2006), both sides of the side plates (9004) are fixedly connected to limit rollers (90011), the outside of the side plates (9004) is fixedly connected to a first magnet (9005) and a second magnet (9006), the second magnet (9006) and the third magnet (10006) are arranged with the same poles repelling each other, and the first magnet (9005) and the third magnet (10006) are arranged with opposite poles attracting each other.

7. A cross-section flow measuring device according to claim 6, characterized in that: The positioning hole (90010) is compatible with the limiting column (10002), and a magnetic block is fixedly connected inside the positioning hole (90010).

8. A cross-section flow measuring device according to claim 7, characterized in that: The exterior of the flow measuring vehicle (200) is fixedly connected to a cylinder (600), and the output end of the cylinder (600) is fixedly connected to a suction cup (6001).

9. A cross-section flow measuring device according to claim 8, characterized in that: The suction cup (6001) is an electric vacuum suction cup.

10. A method for using a cross-section flow measuring device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Start the first motor (2003) and the second motor (700) to release the chain (900). During the chain (900) release process, the mounting frame (9001) drives the speed meter (9002) and the mud level meter (9003) to enter the water liquid; Step 2: During the release of the chain (900), the second magnet (9006) and the third magnet (10006) are arranged with like poles repelling each other, so that under the action of the repulsive force, the slide bar (1004) drives the limiting column (10002) to slide into the positioning hole (90010), thereby locking the positions of the first rotating plate (9007) and the second rotating plate (9009), allowing the chain (900) to vertically enter the river channel. At the same time, the chain (900) can be limitedly supported by the two limiting rollers (90011), thereby preventing the chain (900) from deflecting in the river channel, thereby reducing the error generated during the measurement process; Step three, when the winding roller (7001) stores the chain (900), since the first magnet (9005) and the third magnet (10006) are arranged with opposite poles attracting each other, during the storage process of the chain (900), the first magnet (9005) and the third magnet (10006) can adsorb each other, so that the limit post (10002) can slide outward and disengage from the positioning hole (90010), so that the first rotating plate (9007) and the second rotating plate (9009) can rotate and be stored by the winding roller (7001) again.

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