A rail-mounted flow measurement vehicle

Abstract

The utility model discloses a track type flow measuring vehicle device relates to the technical field of open channel measurement water, including the flow measuring vehicle body, cantilever mechanism, speed measuring equipment, measurement and control terminal and terminal software. The utility model discloses through the movement of flow measuring vehicle body, drives the left and right movement and up and down of speed measuring equipment lift, measures the flow rate of water channel cross section different measuring point in turn and calculates the flow, and the basic handheld or manual measurement method is changed into full -automatic measurement, adopts the structure form that speed measuring equipment is external and is overhanging to the track outside operation, is convenient for track laying, also is convenient for dismounting and maintaining flow velocity meter, supports the loading of different types of flow velocity meter, supports the flow rate measurement of using distributed or scanning type measurement method, improves and guarantees the measurement accuracy through the accurate control of depth measurement, double -filter flow rate signal, dynamic adjustment conversion coefficient etc.

Description

Technical Field

[0001] This utility model relates to the field of open channel water measurement technology, and in particular to automatic flow measurement technology and equipment based on the velocity-area method. Background Technology

[0002] The allocation and utilization of water resources mainly adopts open channel water conveyance, and measuring the flow and volume of open channels is an important task.

[0003] There are many methods for measuring the flow rate of open water conveyance channels (including waterways). Among them, the flow velocity meter method (or flow velocity area method) is the most basic method and the main calibration method for other methods and equipment. It has high accuracy, strong anti-interference ability, simple operation, and wide application. It is especially suitable for channels with large flow rates and large cross-sections and can adapt to complex water flow and operating conditions.

[0004] Traditional flow velocity measurement is generally done manually, which is time-consuming, labor-intensive, and wasteful of manpower. It also results in fewer measurements and is prone to human error. It is gradually being replaced by automatic flow measurement and online monitoring equipment, among which the track-mounted flow measurement vehicle is one type. This equipment retains the advantages of flow velocity measurement and realizes automatic measurement with no human intervention or supervision, which has obvious technical advantages. However, the current equipment still has a low degree of automation and flow measurement accuracy, weak ease of use and adaptability, and poor anti-interference and error elimination capabilities. In particular, the commonly used method of embedding the flow velocity meter and directly lowering it to the bottom for lateral movement causes inconvenience in use and difficulty in laying the track. Utility Model Content

[0005] The purpose of this invention is to solve the problems of existing similar flow measurement vehicles in terms of structure, technology, function, and performance. While solving the above problems, the accuracy is further improved by improving the measurement method and optimizing the algorithm, thereby enhancing the practicality of flow measurement by the flow measurement vehicle.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a track-type flow measurement vehicle device, comprising a flow measurement vehicle body, a cantilever mechanism, a speed measuring device, a measurement and control terminal, and terminal software. The flow measurement vehicle body includes a horizontal moving mechanism, a vertical lifting mechanism, a battery pack, a chassis, a shell, and an eccentric wheel. The horizontal moving mechanism consists of a track wheel, a drive chain, a horizontal drive motor, a motor controller, and a horizontal anti-collision limit strip. The vertical lifting mechanism consists of a wire rope drum, a drive gear, a vertical drive motor, and an anti-loosening limiter. The cantilever mechanism includes a gantry, a guide wheel, an electric push rod, an electric push rod controller, a shaft pin, and an anti-collision limiter. The bottom of the gantry is rotatably connected to the opposite side of the chassis via a shaft pin. The guide wheel is fixedly connected to the gantry. One end of the electric push rod is rotatably connected to one side of the chassis. The electric push rod is rotatably connected to the gantry. The guide wheel is fixedly connected to the anti-collision limiter.

[0008] Preferably, the track-type flow measurement vehicle adopts a structure with the drive mechanism built in and the speed measuring device external. The drive mechanism and main electronic equipment are built into the vehicle body, while the flow meter and lead weight of the speed measuring device, due to their large size and the need for frequent disassembly, maintenance and replacement, are placed outside the vehicle body for convenient operation.

[0009] Preferably, the track-type flow measuring vehicle uses a cantilever mechanism to suspend the speed measuring equipment to the outside of the track and run on the outside of the track, which solves the problem of leaving a gap when moving between two tracks, facilitates the direct laying of tracks on bridge decks, trusses and cantilever beams, and is easy to install and deploy.

[0010] Preferably, the cantilever mechanism consists of a gantry, an electric push rod, a guide wheel, and an anti-collision limiter. The gantry is axled to the vehicle body base support and tilts and stands up under the push of the electric push rod. When tilted, the speed measuring device is cantilevered to the outside of the vehicle body, and when stood up, the speed measuring device is retrieved and placed on the roof of the vehicle.

[0011] Preferably, the velocity measuring device includes a flow meter, a lead weight, a signal transponder, etc. The flow meter can be replaced with different types of equipment to match different measurement methods and meet different flow measurement needs.

[0012] Preferably, the signal converter supports both switch and serial port signal inputs, can be matched with rotor-type and electronic flow meters (Doppler type, radar wave type), supports both wired and wireless signal outputs, and can be connected to the measurement and control terminal via serial bus and wireless Bluetooth.

[0013] Preferably, the signal converter has both switching signal filtering and conversion functions and digital signal filtering and transmission functions. It uses current integration method and software filtering method to perform dual filtering on the contact switching signal of the rotor flow meter to eliminate problems such as signal continuity caused by water conductivity and signal discontinuity caused by poor contact, and prevent signal loss or re-measurement.

[0014] Preferably, the measurement and control terminal can be a mobile terminal, a vehicle-mounted terminal, or a ground terminal, and one or more of them can be used simultaneously depending on the application scenario.

[0015] The measurement and control terminal controls the movement of the vehicle and performs measurements. It supports three measurement and control modes: fully automatic, semi-automatic, and manual. It supports two speed measurement methods: the line and point measurement method and the full-section scanning method. When using a rotor-type flow meter, the standard line and point measurement method is used. When using an electronic flow meter, either the line and point measurement method or the full-section scanning method can be used. The scanning method can better leverage the advantages of the flow measurement vehicle's automatic distance measurement and the flow meter's continuous output, resulting in higher accuracy.

[0016] Preferably, in addition to control and measurement, the terminal software further improves and ensures accuracy through various means.

[0017] Preferably, the depth measurement is calculated based on the current water depth, and the descent height of the current meter is controlled according to the preset ratio of the initial height of the current meter to the motor speed, so as to accurately control the depth measurement.

[0018] Preferably, data is filtered and verified a second time through graphical display, mean square error calculation, etc., to eliminate interference, remove anomalies, and eliminate accidental and human errors.

[0019] Preferably, the flow rate is calculated based on the velocity-area method, which can be calculated using the unit area method or the area integration method; it supports the conversion of flow rate using calibrated velocity coefficients and flow coefficients, the velocity coefficients of the measuring line can be set separately, and the velocity coefficients and flow coefficients can be correlated with water depth, flow velocity, longitudinal slope, wetted perimeter, water flow area, roughness, etc., and dynamically adjusted.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] 1. This utility model adopts an external flow meter, which makes it more convenient to disassemble, replace and maintain the flow meter. Pre-measurement installation inspection and post-measurement cleaning, oiling and recycling can be carried out in accordance with the flow meter usage specifications.

[0022] 2. In this utility model, the speed measuring device moves and rises and falls on the outside of the track, and there is no need to leave a gap between the two tracks. The track can be laid directly on the bridge deck, truss or cantilever beam, which facilitates track laying and reduces costs.

[0023] 3. This utility model, through the replacement of the flow meter and the improvement of the standard measurement method, can overcome the inherent shortcomings of the rotor-type flow meter and obtain better measurement results.

[0024] 4. This utility model has better depth control, signal filtering, data processing and coefficient adjustment capabilities, and is more accurate and reliable.

[0025] 5. This utility model can operate fully automatically without human intervention, reducing manual labor and lowering workload. (See attached drawings.) Attached image description:

[0026] Figure 1 A schematic diagram of the external structure of the track-type flow measuring vehicle provided by this utility model;

[0027] Figure 2 A schematic diagram of the internal structure of the track-type flow measuring vehicle provided by this utility model;

[0028] legend:

[0029] 1. Flow measurement vehicle body

[0030] 100 Track, 101 Track wheel, 102 Drive chain, 103 Horizontal drive motor, 104 One-to-two motor controller, 105 Horizontal anti-collision limit bar, 106 Battery pack, 107 Chassis, 108 Shell, 109 Eccentric wheel; 111 Wire rope drum, 112 Drive gear, 113 Vertical drive motor, 114 Anti-loosening limiter.

[0031] 2. Cantilever mechanism

[0032] 201 Gantry, 202 Guide wheel, 203 Electric push rod, 204 Push rod controller, 205 Shaft pin, 206 Anti-overhead limiter.

[0033] 3. Speed ​​measuring equipment

[0034] 301 Rotary current meter, 302 Doppler current meter, 303 Radar current meter, 304 Lead weight, 305 Steel wire rope conductor, 306 Conductive slip ring, 307 Signal repeater, 308 Wireless communication module, 309 Water level gauge.

[0035] 4. Measurement and control terminal

[0036] 401 Vehicle-mounted terminal, 402 Floor-standing terminal, 403 Mobile terminal, 404 Vehicle-mounted terminal bracket, 405 Floor-standing terminal bracket. Detailed Implementation

[0037] To more clearly describe the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0038] This invention may also be implemented in other ways different from those described herein, and is not limited to the specific embodiments disclosed below.

[0039] Device components:

[0040] Examples, such as Figure 1As shown, this utility model provides a track-type flow measurement vehicle device, including a flow measurement vehicle body, a cantilever mechanism, a speed measuring device, and a measurement and control terminal. The measurement method is implemented by the measurement and control terminal software.

[0041] like Figure 2 As shown, the track-type flow measurement vehicle includes a horizontal moving mechanism, a vertical lifting mechanism, a battery pack 106, a chassis 107, a shell 108, and an eccentric wheel 109; wherein the horizontal moving mechanism consists of a track wheel 101, a drive chain 102, a horizontal drive motor 103, a motor controller 104, and a horizontal anti-collision limit bar 105; the vertical lifting mechanism consists of a wire rope drum 111, a drive gear 112, a vertical drive motor 113, a motor controller 104, and an anti-loosening limiter 114;

[0042] The chassis 107 is fixedly connected to the outer casing 108, the eccentric wheel 109 is rotatably connected to the chassis 107, and the battery pack 106 is disposed inside the chassis 107.

[0043] The track wheel 101 is rotatably connected to the chassis 107 via a shaft. The horizontal drive motor 103 is fixedly connected to the inside of the chassis 107 via a support plate. A sprocket is fixedly connected to the output shaft end of the horizontal drive motor 103. A sprocket is fixedly connected to the shaft of the track wheel 101. The outer surfaces of both sprockets and the first sprocket are meshed with the drive chain 102. A motor controller 104 is installed inside the chassis 107.

[0044] The shaft of the wire rope drum 111 is rotatably connected to the top of the chassis 107 via a bracket. The shaft of the wire rope drum 111 is fixedly connected to the drive gear 112. The output end of the vertical drive motor 113 is fixedly connected to the drive wheel, which meshes with the drive gear 112. The anti-loosening limiter 114 is located inside the chassis 107.

[0045] like Figure 1 As shown, the flow measurement vehicle moves horizontally along the track, shifting left and right, and simultaneously raising and lowering the speed measuring equipment, as well as its entry and exit from the water, thus completing the entire measurement process. Eccentric wheels are used to lift the vehicle off the ground, facilitating disengagement from the track wheels locked by the power-off brakes, allowing for movement via a push-pull mechanism.

[0046] The cantilever mechanism includes a gantry 201, guide wheels 202, an electric push rod 203, an electric push rod controller 204, a pivot pin 205, and an anti-collision limiter 206. The bottom of the gantry 201 is rotatably connected to the opposite side of the chassis 107 via the pivot pin 205. The guide wheels 202 are fixedly connected to the gantry 201. One end of the electric push rod 203 is rotatably connected to one side of the chassis 107 and is rotatably connected to the gantry 201. The guide wheels 202 are fixedly connected to the anti-collision limiter 206. The electric push rod pushes the cantilever mechanism to swing vertically slightly around the pivot pin. When tilted, the mechanism extends outward; when uprighted, it retracts the water-entry component of the speed measuring device.

[0047] The speed measuring device includes a rotor-type current meter 301, a Doppler current meter 302, a radar current meter 303, a lead weight 304, a wire rope conductor 305, a conductive slip ring 306, a signal repeater 307, and a wireless communication module 308. One end of the wire rope conductor 305 is fixedly wound around the outer surface of the wire rope drum 111 and is slidably connected to the guide wheel 202. The other end of the wire rope conductor 305 is fixedly connected to the top of the rotor-type current meter 301. One end of the rotor-type current meter 301 is fixedly connected to the outer surface of the lead weight 304, and the Doppler current meter 302 is fixedly connected to the outer surface of the lead weight 304. The radar current meter 303 is fixedly connected to the housing 108. The conductive slip ring 306 is fixedly connected to the other end of the shaft of the wire rope drum 111. The signal repeater 307 and the wireless communication module 308 are located inside the chassis 107. The speed measuring device is responsible for collecting, processing, and transmitting flow velocity signals.

[0048] The measurement and control terminals include a vehicle-mounted terminal 401, a floor-mounted terminal 402, and a mobile terminal 403, each with built-in measurement and control software. The vehicle-mounted terminal connects to the motor controller and signal repeater via a serial bus, responsible for controlling operation and completing measurements. The three terminals can be selected to suit different measurement and control scenarios.

[0049] Furthermore, in addition to basic measurement and control functions, the measurement and control terminal also has functions such as intelligent interpretation, automatic calculation, graphic display, data storage, and remote transmission.

[0050] Working principle:

[0051] The flow measurement vehicle moves along the track across the canal, moving and raising the velocity measuring equipment, which in turn moves the flow meter in a vertical plane perpendicular to the direction of water flow in the canal. It measures the flow velocity at different points within a cross-section of the water flow in sequence, and then calculates the flow rate according to the velocity area method. The velocity measuring points are distributed in a matrix, resulting in high measurement accuracy.

[0052] Due to the complex flow of water in open channels and the numerous interference and influencing factors, a certain support mechanism is needed to maintain accuracy and stability and to complete the measurement process fully automatically. This utility model mainly has four mechanisms: first, accurately locating the flow meter for depth measurement to ensure accurate measurement position; second, effectively processing and filtering initial signals and data to detect and eliminate abnormal values; third, analyzing and judging whether the process data is correct, continuing operation if correct and re-retrieving values ​​if incorrect; and fourth, using adjustable coefficients to convert flow velocity and flow rate, with multi-factor correlation and automatic dynamic adjustment.

[0053] Operating steps:

[0054] First, the cross-sectional parameters, measurement parameters, position parameters, and conversion coefficients must be measured or verified and preset into the measurement and control terminal.

[0055] Once the vehicle body is positioned at the initial 0 point and the flow meter at the initial 0 point height, operation is initiated. The flow meter vehicle travels along the cross-channel track and stops at the first measuring line. The flow meter is then lowered until it reaches the depth measurement point, and measurement begins. After measurement, the reliability of the data is assessed. If the data fails, sampling continues or an alarm is triggered. If the data passes, measurement continues at the next measuring point. Once all measuring points along a measuring line have been measured, the flow meter is raised out of the water and moved laterally to the next measuring line to continue measurement. After all measuring points have been measured, the flow rate is calculated based on the current water depth and an appropriate coefficient is selected.

[0056] Using a continuously online flow meter, the cross-sectional flow velocity can be measured by full-section scanning. This requires moving continuously from one side of the water to the other, reading the flow velocity and recording the lateral distance as you move. After the measurement is completed, the flow rate is calculated using the area integration method.

[0057] After the measurement is completed, the speed measuring equipment is retrieved, the entire device returns to its initial 0 point, contacts the charging pile for charging, and then the flow meter is maintained and retrieved according to regulations.

[0058] Someone must be present to observe the measurement process and take immediate action if any abnormalities are found.

[0059] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A track-type flow measurement vehicle device, comprising a flow measurement vehicle body (1), a cantilever mechanism (2), a speed measuring device (3), a measurement and control terminal (4), and terminal software, characterized in that: The flow measurement vehicle body (1) includes a horizontal moving mechanism, a vertical lifting mechanism, a battery pack (106), a chassis (107), a shell (108), and an eccentric wheel (109). The horizontal moving mechanism consists of a track wheel (101), a drive chain (102), a horizontal drive motor (103), a motor controller (104), and a horizontal anti-collision limit bar (105). The vertical lifting mechanism consists of a wire rope drum (111), a drive gear (112), a vertical drive motor (113), and an anti-loosening limiter (114). The cantilever mechanism includes a gantry (20). 1) Guide wheel (202), electric push rod (203), electric push rod controller (204), axle pin (205), anti-collision limiter (206). The bottom of the gantry (201) is rotatably connected to the opposite side of the chassis (107) through the axle pin (205). The guide wheel (202) is fixedly connected to the gantry (201). One end of the electric push rod (203) is rotatably connected to one side of the chassis (107). The electric push rod (203) is rotatably connected to the gantry (201). The guide wheel (202) is fixedly connected to the anti-collision limiter (206).

2. The track-type flow measuring vehicle device according to claim 1, characterized in that: The chassis (107) is fixedly connected to the outer shell (108), the eccentric wheel (109) is rotatably connected to the chassis (107), and the battery pack (106) is disposed inside the chassis (107).

3. The track-type flow measuring vehicle device according to claim 2, characterized in that: The track wheel (101) is rotatably connected to the chassis (107) via a shaft. The horizontal drive motor (103) is fixedly connected to the inside of the chassis (107) via a support plate. A sprocket is fixedly connected to the output shaft end of the horizontal drive motor (103). A sprocket is fixedly connected to the shaft of the track wheel (101). The outer surfaces of both sprockets are meshed with the drive chain (102). A motor controller (104) is installed inside the chassis (107).

4. The track-type flow measuring vehicle device according to claim 3, characterized in that: The shaft of the wire rope drum (111) is rotatably connected to the top of the chassis (107) via a bracket. The shaft of the wire rope drum (111) is fixedly connected to the drive gear (112). The output end of the vertical drive motor (113) is fixedly connected to the drive wheel. The drive wheel is meshed with the drive gear (112). The anti-loosening limiter (114) is located inside the chassis (107).

5. The track-type flow measuring vehicle device according to claim 4, characterized in that: The speed measuring device (3) includes a rotor current meter (301), a Doppler current meter (302), a radar current meter (303), a lead weight (304), a wire rope conductor (305), a conductive slip ring (306), a signal repeater (307), and a wireless communication module (308). One end of the wire rope conductor (305) is fixedly wound around the outer surface of the wire rope drum (111). The wire rope conductor (305) is slidably connected to the guide wheel (202). The other end of the wire rope conductor (305) The rotor current meter (301) is fixedly connected to the top of the rotor current meter (301). One end of the rotor current meter (301) is fixedly connected to the outer surface of the lead fish (304). The Doppler current meter (302) is fixedly connected to the outer surface of the lead fish (304). The radar current meter (303) is fixedly connected to the outer shell (108). The conductive slip ring (306) is fixedly connected to the other end of the shaft of the wire rope drum (111). The chassis (107) is equipped with a signal repeater (307) and a wireless communication module (308).

6. The track-type flow measuring vehicle device according to claim 1, characterized in that: The measurement and control terminal (4) includes a vehicle terminal (401), a ground terminal (402), and a mobile terminal (403), and the measurement and control terminal has built-in measurement and control software.

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