CN110879085A - Floating ball-torsion spring type liquid level and flow rate online detection device - Google Patents

Floating ball-torsion spring type liquid level and flow rate online detection device Download PDF

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Publication number
CN110879085A
CN110879085A CN201911343302.8A CN201911343302A CN110879085A CN 110879085 A CN110879085 A CN 110879085A CN 201911343302 A CN201911343302 A CN 201911343302A CN 110879085 A CN110879085 A CN 110879085A
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floating ball
torsion spring
liquid level
rotation angle
angle sensor
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李思辰
周明连
董红
王增义
于丽昕
王欢欢
杨超
徐克举
赵东方
闫睿
关萍
张俊杰
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Beijing Drainage Technology Co ltd
Beijing Drainage Group Co Ltd
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Beijing Drainage Technology Co ltd
Beijing Drainage Group Co Ltd
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    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass

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Abstract

本发明提出了一种浮球‑扭簧式液位流速在线检测装置,该装置包括:控制电路,所述控制电路包括处理单元和通信单元;第一转角传感器和第二转角传感器,分别与所述处理单元通信连接,将获取的信号数据发送至所述处理单元进行计算,计算结果通过通信单元发出;摆杆和浮球,所述摆杆通过第一转角传感器枢轴连接到固定板,所述浮球通过第二转角传感器枢轴连接到所述摆杆。本发明的浮球‑扭簧式液位流速在线检测装置可以进行远程数据传输,实时在线监测,而且安装简便,安装及维护成本低。

Figure 201911343302

The present invention provides a float-torsion spring type liquid level and flow rate online detection device, the device includes: a control circuit, the control circuit includes a processing unit and a communication unit; a first rotation angle sensor and a second rotation angle sensor, respectively connected to the The processing unit is communicatively connected, and the acquired signal data is sent to the processing unit for calculation, and the calculation result is sent out through the communication unit; the pendulum rod and the floating ball, the pendulum rod is pivotally connected to the fixed plate through the first rotation angle sensor, so The floating ball is pivotally connected to the pendulum rod through a second rotation angle sensor. The floating ball-torsion spring type liquid level and flow velocity online detection device of the present invention can perform remote data transmission, real-time online monitoring, and is easy to install, with low installation and maintenance costs.

Figure 201911343302

Description

一种浮球-扭簧式液位流速在线检测装置A floating ball-torsion spring type liquid level and flow velocity online detection device

技术领域technical field

本发明属于检测领域,涉及排水管道液位流速检测设备,具体涉及一种浮球-扭簧式液位流速在线检测装置。The invention belongs to the field of detection, relates to a device for detecting the liquid level and flow velocity of a drainage pipeline, and in particular relates to a float-torsion spring type liquid level and flow velocity online detection device.

背景技术Background technique

排水管道内部环境严酷,水流条件多变,对管道流量计有较为严格的使用要求,其适用性主要包括抗干扰能力强,要能够抵抗水中杂质的干扰。此外,排水管道空间狭小,可供安装的地点主要是各种井,希望水位流速仪对安装空间的要求低,并且易于固定。再次,要求使用成本低,可以大规模普及,除了设备自身的价格外,还需要考虑安装成本及后期的保养维护成本。而且还需要可以进行远程数据传输,实时在线监测。对照以上因素考虑,目前常用的流量计均存在种种缺陷无法满足使用要求。比如转子式流速仪,在使用时易先挂垃圾;多普勒流量计,防水抗污能力较强,但成本高,无法大面积普及。The internal environment of the drainage pipeline is harsh, and the water flow conditions are changeable, and there are strict requirements for the use of pipeline flowmeters. Its applicability mainly includes strong anti-interference ability, and it must be able to resist the interference of impurities in the water. In addition, the drainage pipe space is small, and the installation sites are mainly various wells. It is hoped that the water level and flow meter has a low installation space and is easy to fix. Thirdly, it requires low cost of use and can be popularized on a large scale. In addition to the price of the equipment itself, it is also necessary to consider the installation cost and later maintenance costs. It also needs to be able to carry out remote data transmission and real-time online monitoring. Considering the above factors, the currently commonly used flowmeters have various defects that cannot meet the requirements of use. For example, the rotor-type flow meter is easy to hang garbage when it is used; the Doppler flowmeter has strong waterproof and anti-fouling ability, but the cost is high and cannot be widely used.

为解决此问题,本发明设计了一种适合于排水管道浮球-扭簧式液位流速在线检测装置。In order to solve this problem, the present invention designs an on-line detection device for floating ball-torsion spring type liquid level and flow rate suitable for drainage pipes.

发明内容SUMMARY OF THE INVENTION

为了解决现有技术的问题,本发明提供一种浮球-扭簧式液位流速在线检测装置,该装置包括:In order to solve the problems of the prior art, the present invention provides a floating ball-torsion spring type liquid level and flow velocity online detection device, which comprises:

控制电路,所述控制电路包括处理单元和通信单元;a control circuit, the control circuit includes a processing unit and a communication unit;

第一转角传感器和第二转角传感器,分别与所述处理单元通信连接,将获取的信号数据发送至所述处理单元进行计算,计算结果通过通信单元发出;The first rotation angle sensor and the second rotation angle sensor are respectively connected in communication with the processing unit, and send the acquired signal data to the processing unit for calculation, and the calculation result is sent through the communication unit;

摆杆和浮球,所述摆杆通过第一转角传感器连接到固定板,所述浮球通过第二转角传感器连接到所述摆杆。A pendulum rod and a floating ball, the pendulum rod is connected to the fixed plate through a first rotation angle sensor, and the floating ball is connected to the pendulum rod through a second rotation angle sensor.

进一步地,第一和第二转角传感器包括编码器和转轴,当转轴发生转动时所述编码器输出电信号标记转角。Further, the first and second rotation angle sensors include an encoder and a rotating shaft, and when the rotating shaft rotates, the encoder outputs an electrical signal to mark the rotation angle.

进一步地,该装置还包括:Further, the device also includes:

第一安装座,所述第一安装座固定在所述固定板上,所述第一转角传感器固定安装在所述第一安装座上;a first mounting seat, the first mounting seat is fixed on the fixing plate, and the first rotation angle sensor is fixedly mounted on the first mounting seat;

第一销和第一连接管,设置在所述第一安装座上,所述第一转角传感器的转轴固定穿在第一连接管中,第一连接管和所述摆杆连接在一起,以第一销为轴转动,从而使所述第一转角传感器的转轴转过一定的角度。The first pin and the first connecting pipe are arranged on the first mounting seat, the rotating shaft of the first rotation angle sensor is fixedly passed through the first connecting pipe, and the first connecting pipe and the swing rod are connected together to The first pin rotates as an axis, so that the rotation axis of the first rotation angle sensor rotates through a certain angle.

进一步地,该装置还包括摆杆连接件,所述摆杆连接件一端连接到所述摆杆,另一端连接到所述第一连接管;Further, the device further comprises a rocking rod connecting piece, one end of the rocking rod connecting piece is connected to the rocking rod, and the other end is connected to the first connecting pipe;

所述第一安装座是U型开口的矩形座,开口宽度与所述摆杆连接件的宽度相匹配。The first mounting seat is a rectangular seat with a U-shaped opening, and the width of the opening matches the width of the swing rod connecting piece.

进一步地,该装置还包括:Further, the device also includes:

第二安装座,所述第二安装座固定在所述摆杆上,所述第二转角传感器固定安装在所述第二安装座上;a second installation seat, the second installation seat is fixed on the swing rod, and the second rotation angle sensor is fixedly installed on the second installation seat;

第二销和第二连接管,设置在所述第二安装座上,所述第二转角传感器的转轴固定穿在第二连接管中,第二连接管和所述浮球连接在一起,以第二销为轴转动,从而使所述第二转角传感器的转轴转过一定的角度。The second pin and the second connecting pipe are arranged on the second mounting seat, the rotating shaft of the second rotation angle sensor is fixedly passed through the second connecting pipe, and the second connecting pipe and the floating ball are connected together to The second pin rotates as an axis, so that the rotation axis of the second rotation angle sensor rotates through a certain angle.

进一步地,该装置还包括第一扭簧和第二扭簧,分别设置在所述第二连接管的两端,使得第二连接管绕第二销转动时产生力矩。Further, the device further includes a first torsion spring and a second torsion spring, which are respectively disposed at both ends of the second connecting tube, so that the second connecting tube generates torque when it rotates around the second pin.

进一步地,该装置还包括浮球连接件,所述浮球连接件一端连接到所述浮球,另一端连接到所述第二连接管;Further, the device further comprises a floating ball connecting piece, one end of the floating ball connecting piece is connected to the floating ball, and the other end is connected to the second connecting pipe;

所述第二安装座是矩形开口的矩形座,开口宽度与所述浮球连接件宽度及第一扭簧和第二扭簧长度相匹配。The second mounting seat is a rectangular seat with a rectangular opening, and the width of the opening matches the width of the floating ball connecting piece and the lengths of the first torsion spring and the second torsion spring.

进一步地,所述控制电路还包括置零开关,与所述处理单元通信连接。Further, the control circuit further includes a zero-setting switch, which is connected in communication with the processing unit.

进一步地,所述控制电路还包括电源,为所述控制电路中的电路模块供电。Further, the control circuit further includes a power supply for supplying power to the circuit modules in the control circuit.

进一步地,所述控制电路还包括电磁继电器和电磁继电器中断开关;Further, the control circuit also includes an electromagnetic relay and an electromagnetic relay interruption switch;

所述第一转角传感器和第二转角传感器通过电磁继电器连接到所述电源;the first rotation angle sensor and the second rotation angle sensor are connected to the power supply through an electromagnetic relay;

所述电磁继电器中断开关与所述控制单元通信连接,用于控制所述电磁继电器的通断电。The electromagnetic relay interruption switch is connected in communication with the control unit, and is used for controlling on/off of the electromagnetic relay.

本发明的浮球-扭簧式液位流速在线检测装置可以进行远程数据传输,实时在线监测,而且安装简便,安装及维护成本低。The floating ball-torsion spring type liquid level and flow velocity online detection device of the present invention can perform remote data transmission, real-time online monitoring, easy installation, and low installation and maintenance costs.

附图说明Description of drawings

通过结合附图对本公开示例性实施方式进行更详细的描述,本公开的上述以及其它目的、特征和优势将变得更加明显,其中,在本公开示例性实施方式中,相同的参考标号通常代表相同部件。The above and other objects, features and advantages of the present disclosure will become more apparent from the more detailed description of the exemplary embodiments of the present disclosure taken in conjunction with the accompanying drawings, wherein the same reference numerals generally refer to the exemplary embodiments of the present disclosure. same parts.

为了更清楚地说明本发明实施例的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

图1是根据本发明实施例的浮球-扭簧式液位流速在线检测装置的整体结构示意图。FIG. 1 is a schematic diagram of the overall structure of a float-torsion spring type on-line detection device for liquid level and flow rate according to an embodiment of the present invention.

图2是根据本发明实施例的浮球-扭簧式液位流速在线检测装置的安装结构示意图。FIG. 2 is a schematic diagram of the installation structure of the float-torsion spring type liquid level and flow rate online detection device according to an embodiment of the present invention.

图3是根据本发明实施例的浮球-扭簧式液位流速在线检测装置的第一安装座的剖面图。3 is a cross-sectional view of the first mounting seat of the float-torsion spring type liquid level and flow velocity online detection device according to an embodiment of the present invention.

图4是根据本发明实施例的浮球-扭簧式液位流速在线检测装置的第二安装座的剖面图。4 is a cross-sectional view of a second mounting seat of the float-torsion spring type liquid level and flow velocity online detection device according to an embodiment of the present invention.

图5是根据本发明实施例的浮球-扭簧式液位流速在线检测装置的安装座固定板示意图。5 is a schematic diagram of a mounting seat fixing plate of the float-torsion spring type liquid level and flow velocity online detection device according to an embodiment of the present invention.

图6是根据本发明实施例的浮球-扭簧式液位流速在线检测装置的浮球结构示意图。FIG. 6 is a schematic diagram of a float structure of a float-torsion spring type liquid level and flow rate online detection device according to an embodiment of the present invention.

图7是根据本发明实施例的浮球-扭簧式液位流速在线检测装置的电控的工作状态图。7 is a working state diagram of the electronic control of the float-torsion spring type liquid level and flow rate online detection device according to an embodiment of the present invention.

图8是根据本发明实施例的浮球-扭簧式液位流速在线检测装置的整体电路图。FIG. 8 is an overall circuit diagram of a float-torsion spring type liquid level and flow rate online detection device according to an embodiment of the present invention.

附图标记:Reference number:

电柜箱1;第一铝型材2;第二铝型材3;固定螺钉4;固定板5;第一安装座6;第一转角传感器7;摆杆连接件8;浮球连接件9;摆杆10;连接螺栓11;浮球12;第二安装座13;第二转角传感器14;检查井15;第一销16;第一连接管17;第二销18;第二连接管19;第一扭簧20;第二扭簧21;电源43;处理单元48;置零开关54;电磁继电器中断开关53;电源开关44;多路电源分电板45;分压模块46;电磁继电器49;第一降压模块47;第二降压模块50;4G模块51;RS232转TTL模块52;第一排母58;第二排母57;第三排母60;第四排母62;5V排母端55;GND2排母端56;第一电阻59;第二电阻61;GND1排母端63。Electric cabinet box 1; first aluminum profile 2; second aluminum profile 3; fixing screw 4; fixing plate 5; first mounting seat 6; first rotation angle sensor 7; Rod 10; connecting bolt 11; float 12; second mounting seat 13; second rotation angle sensor 14; inspection well 15; first pin 16; first connecting pipe 17; second pin 18; second connecting pipe 19; A torsion spring 20; second torsion spring 21; power supply 43; processing unit 48; zero reset switch 54; electromagnetic relay interrupt switch 53; power switch 44; The first step-down module 47; the second step-down module 50; the 4G module 51; the RS232 to TTL module 52; Female terminal 55; GND2 row female terminal 56; first resistor 59; second resistor 61; GND1 row female terminal 63.

具体实施方式Detailed ways

下面将参照附图更详细地描述本公开的优选实施方式。虽然附图中显示了本公开的优选实施方式,然而应该理解,可以以各种形式实现本公开而不应被这里阐述的实施方式所限制。相反,提供这些实施方式是为了使本公开更加透彻和完整,并且能够将本公开的范围完整地传达给本领域的技术人员。Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

本公开提出了一种浮球-扭簧式液位流速在线检测装置,该装置包括:The present disclosure proposes a float-torsion spring type on-line detection device for liquid level and flow velocity, which includes:

控制电路,所述控制电路包括处理单元和通信单元;a control circuit, the control circuit includes a processing unit and a communication unit;

第一转角传感器和第二转角传感器,分别与所述处理单元通信连接,将获取的信号数据发送至所述处理单元进行计算,计算结果通过通信单元发出;The first rotation angle sensor and the second rotation angle sensor are respectively connected in communication with the processing unit, and send the acquired signal data to the processing unit for calculation, and the calculation result is sent through the communication unit;

摆杆和浮球,所述摆杆通过第一转角传感器枢轴连接到固定板,所述浮球通过第二转角传感器枢轴连接到所述摆杆。A pendulum rod and a floating ball, the pendulum rod is pivotally connected to the fixed plate through a first rotation angle sensor, and the floating ball is pivotally connected to the pendulum rod through a second rotation angle sensor.

具体地,浮球漂浮在水上,水位升降使浮球升降,使与浮球连接的摆杆转动,因此第一转角传感器和第二转角传感器或发生转动。第一和第二转角传感器包括编码器和转轴,当转轴发生转动时所述编码器输出电信号标记转角,第一转角传感器测得的信号用于给出水位数据,第二转角传感器测得的信号用于计算浮球受到的推力,从而检测到流速。Specifically, when the floating ball floats on the water, the water level rises and falls to make the floating ball rise and fall, and the pendulum rod connected to the floating ball rotates, so the first rotation angle sensor and the second rotation angle sensor may rotate. The first and second angle sensors include an encoder and a rotating shaft. When the rotating shaft rotates, the encoder outputs an electrical signal to mark the angle of rotation. The signal measured by the first angle sensor is used to give water level data, and the signal measured by the second angle sensor is used. The signal is used to calculate the thrust on the float, thereby detecting the flow rate.

进一步地,该装置还包括:Further, the device also includes:

第一安装座,所述第一安装座固定在所述固定板上,所述第一转角传感器固定安装在所述第一安装座上;a first mounting seat, the first mounting seat is fixed on the fixing plate, and the first rotation angle sensor is fixedly mounted on the first mounting seat;

第一销和第一连接管,设置在所述第一安装座上,所述第一转角传感器的转轴固定穿在第一连接管中,第一连接管和所述摆杆连接在一起,以第一销为轴转动,从而使所述第一转角传感器的转轴转过一定的角度。The first pin and the first connecting pipe are arranged on the first mounting seat, the rotating shaft of the first rotation angle sensor is fixedly passed through the first connecting pipe, and the first connecting pipe and the swing rod are connected together to The first pin rotates as an axis, so that the rotation axis of the first rotation angle sensor rotates through a certain angle.

进一步地,该装置还包括摆杆连接件,所述摆杆连接件一端连接到所述摆杆,另一端连接到所述第一连接管;Further, the device further comprises a rocking rod connecting piece, one end of the rocking rod connecting piece is connected to the rocking rod, and the other end is connected to the first connecting pipe;

所述第一安装座是U型开口的矩形座,开口宽度与所述摆杆连接件的宽度相匹配。The first mounting seat is a rectangular seat with a U-shaped opening, and the width of the opening matches the width of the swing rod connecting piece.

进一步地,该装置还包括:Further, the device also includes:

第二安装座,所述第二安装座固定在所述摆杆上,所述第二转角传感器固定安装在所述第二安装座上;a second installation seat, the second installation seat is fixed on the swing rod, and the second rotation angle sensor is fixedly installed on the second installation seat;

第二销和第二连接管,设置在所述第二安装座上,所述第二转角传感器的转轴固定穿在第二连接管中,第二连接管和所述浮球连接在一起,以第二销为轴转动,从而使所述第二转角传感器的转轴转过一定的角度。The second pin and the second connecting pipe are arranged on the second mounting seat, the rotating shaft of the second rotation angle sensor is fixedly passed through the second connecting pipe, and the second connecting pipe and the floating ball are connected together to The second pin rotates as an axis, so that the rotation axis of the second rotation angle sensor rotates through a certain angle.

进一步地,该装置还包括第一扭簧和第二扭簧,分别设置在所述第二连接管的两端,使得第二连接管绕第二销转动时产生力矩。Further, the device further includes a first torsion spring and a second torsion spring, which are respectively disposed at both ends of the second connecting tube, so that the second connecting tube generates torque when it rotates around the second pin.

进一步地,该装置还包括浮球连接件,所述浮球连接件一端连接到所述浮球,另一端连接到所述第二连接管;Further, the device further comprises a floating ball connecting piece, one end of the floating ball connecting piece is connected to the floating ball, and the other end is connected to the second connecting pipe;

所述第二安装座是矩形开口的矩形座,开口宽度与所述浮球连接件宽度及第一扭簧和第二扭簧长度相匹配。The second mounting seat is a rectangular seat with a rectangular opening, and the width of the opening matches the width of the floating ball connecting piece and the lengths of the first torsion spring and the second torsion spring.

进一步地,所述控制电路还包括置零开关,与所述处理单元通信连接。Further, the control circuit further includes a zero-setting switch, which is connected in communication with the processing unit.

进一步地,所述控制电路还包括电源,为所述控制电路中的电路模块供电。Further, the control circuit further includes a power supply for supplying power to the circuit modules in the control circuit.

进一步地,所述控制电路还包括电磁继电器和电磁继电器中断开关;Further, the control circuit also includes an electromagnetic relay and an electromagnetic relay interruption switch;

所述第一转角传感器和第二转角传感器通过电磁继电器连接到所述电源;the first rotation angle sensor and the second rotation angle sensor are connected to the power supply through an electromagnetic relay;

所述电磁继电器中断开关与所述控制单元通信连接,用于控制所述电磁继电器的通断电。The electromagnetic relay interruption switch is connected in communication with the control unit, and is used for controlling on/off of the electromagnetic relay.

本发明中,液位测量过程:按下电源开关,给整个控制装置供电。人工拉动浮球的初始位置置于最底部,测量摆杆与竖直方向的初始夹角θ,然后按下置零开关将第一转角传感器当前的数值置0。当液位升高时,水中的浮球会随着液位向上。与浮球连接的浮球连接件、第二安装座会上移,带动摆杆、摆杆连接件以第一销为轴做相对转动,从而使第一转角传感器的转轴转过一定的角度。In the present invention, the liquid level measurement process: press the power switch to supply power to the entire control device. Manually pull the initial position of the floating ball to the bottom, measure the initial angle θ between the pendulum rod and the vertical direction, and then press the zero-setting switch to set the current value of the first rotation angle sensor to 0. When the liquid level rises, the float ball in the water moves up with the liquid level. The floating ball connecting piece and the second mounting seat connected with the floating ball move up, driving the swing rod and the swing rod connecting piece to rotate relative to the first pin as the axis, so that the rotating shaft of the first rotation angle sensor rotates through a certain angle.

第一转角传感器的模拟信号输入到处理单元实时读取角度β,通过转过的角度和液位之间的关系H=Lcosθ-Lcos(θ+β)+h(H液位高度、L摆杆长度、θ初始角度、β实时测得转过的角度、浮球浸入液面的深度)在处理单元中进行换算输出液位的高度。通过4G模块独有的ID地址将数据上传到云端,4G模块通过创建虚拟串口的形式,远程PC端通过读取虚拟串口的形式在线实时监测液位高度。The analog signal of the first rotation angle sensor is input to the processing unit to read the angle β in real time, through the relationship between the rotated angle and the liquid level H=Lcosθ-Lcos(θ+β)+h(H liquid level height, L pendulum rod Length, θ initial angle, β real-time measured turning angle, and the depth of float immersed in the liquid surface) are converted in the processing unit to output the height of the liquid level. The data is uploaded to the cloud through the unique ID address of the 4G module. The 4G module creates a virtual serial port, and the remote PC terminal monitors the liquid level in real time online by reading the virtual serial port.

流速测量过程:按下电源开关,给整个控制装置供电。使浮球的初始位置置于最低部,然后按下置零开关,将第二转角传感器在没有流速的情况下的数值置0。当有流速时,浮球受到推力作用,与浮球相连接的浮球连接件会以第二销为轴做相对转动,从而使第二转角传感器的转轴转过一定的角度。第二转角传感器的模拟信号输入到处理单元实时读取角度γ,根据浮球受到的推力产生的力矩与扭簧产生的力矩相平衡的公式F*L1=K*γ(F:浮球受到的推力,L1:浮球到第二销的距离,r:浮球转过的角度,K:扭簧的弹簧常数)从而可以求出浮球受到的推力F。再通过力和流速之间的关系F=0.5Cρv2A(C:无因次阻力系数,v:流速,A:物体的迎流面积,ρ:流体密度)在处理单元中换算输出流速的大小。通过4G模块独有的ID地址将数据上传到云,4G模块通过创建虚拟串口的形式,远程PC端通过读取虚拟串口的形式在线实时检测流速大小。Flow rate measurement process: Press the power switch to supply power to the entire control device. Set the initial position of the float to the lowest part, and then press the zero switch to set the value of the second rotation angle sensor to 0 when there is no flow rate. When there is a flow rate, the floating ball is subjected to thrust, and the floating ball connecting piece connected to the floating ball will rotate relative to the second pin as the axis, so that the rotating shaft of the second rotation angle sensor rotates through a certain angle. The analog signal of the second rotation angle sensor is input to the processing unit to read the angle γ in real time, according to the formula F*L1=K*γ(F: the moment generated by the thrust received by the floating ball is balanced with the moment generated by the torsion spring) Thrust, L1: the distance from the floating ball to the second pin, r: the angle that the floating ball rotates, K: the spring constant of the torsion spring) so that the thrust F received by the floating ball can be obtained. The relationship between the passing force and the flow velocity F=0.5Cρv 2 A (C: dimensionless resistance coefficient, v: flow velocity, A: the up-flow area of the object, ρ: fluid density) convert the size of the output flow velocity in the processing unit . The data is uploaded to the cloud through the unique ID address of the 4G module. The 4G module creates a virtual serial port, and the remote PC terminal detects the flow rate online in real time by reading the virtual serial port.

为便于理解本发明实施例的方案及其效果,以下给出一个具体应用示例。本领域技术人员应理解,该示例仅为了便于理解本发明,其任何具体细节并非意在以任何方式限制本发明。To facilitate understanding of the solutions and effects of the embodiments of the present invention, a specific application example is given below. It will be understood by those skilled in the art that this example is provided only to facilitate understanding of the invention and that any specific details thereof are not intended to limit the invention in any way.

本实施例设计了一种浮球-扭簧式液位流速在线检测装置,如图1和图2所示,包含电柜箱1、第一铝型材2、第二铝型材3和固定板5。控制装置安装在电柜箱1内,第一铝型材2和第二铝型材3用于固定电柜箱1。电柜箱1通过固定螺钉4固定在检查井15壁面上。In this embodiment, a floating ball-torsion spring type liquid level and flow velocity online detection device is designed, as shown in FIG. 1 and FIG. . The control device is installed in the electrical cabinet box 1 , and the first aluminum profile 2 and the second aluminum profile 3 are used to fix the electrical cabinet box 1 . The electrical cabinet box 1 is fixed on the wall surface of the inspection well 15 by fixing screws 4 .

固定板5安装在电控箱的前面板上,第一安装座6固定在固定板5上,第一转角传感器7固定安装在所述第一安装座6上。第二安装座13固定在摆杆10上,第二转角传感器14固定安装在第二安装座13上。The fixing plate 5 is mounted on the front panel of the electric control box, the first mounting seat 6 is fixed on the fixing plate 5 , and the first rotation angle sensor 7 is fixedly mounted on the first mounting seat 6 . The second mounting seat 13 is fixed on the swing rod 10 , and the second rotation angle sensor 14 is fixedly mounted on the second mounting seat 13 .

具体地,如图3所示,第一安装座6是U型开口的矩形座,开口宽度与摆杆连接件8的宽度相匹配,安装在固定板5上。如图5所示,通孔m1与第一安装座6上的螺纹孔a1相匹配。螺纹孔c1安装顶丝将摆杆连接件8和第一连接管17固定在一起。摆杆连接件8上设有内螺纹孔b1,便于和摆杆10一端的外螺纹配合。Specifically, as shown in FIG. 3 , the first mounting seat 6 is a rectangular seat with a U-shaped opening, the width of the opening matches the width of the rocker link 8 , and is mounted on the fixing plate 5 . As shown in FIG. 5 , the through hole m1 is matched with the threaded hole a1 on the first mounting seat 6 . A jack screw is installed in the threaded hole c1 to fix the swing rod connecting piece 8 and the first connecting pipe 17 together. The swing rod connecting member 8 is provided with an inner thread hole b1, which is convenient for mating with the outer thread at one end of the swing rod 10 .

如图4所示,第二安装座13是矩形开口的矩形座,开口宽度与浮球连接件9宽度及第一扭簧20和第二扭簧21长度相匹配。如图1及图4所示螺纹孔e1和摆杆10通过连接螺栓11连接在一起。螺纹孔f1安装顶丝将浮球连接件9和第二连接管19固定在一起。浮球连接件9上设有内螺纹孔d1,便于和浮球12一安装。As shown in FIG. 4 , the second mounting seat 13 is a rectangular seat with a rectangular opening, and the width of the opening matches the width of the floating ball connecting piece 9 and the lengths of the first torsion spring 20 and the second torsion spring 21 . As shown in FIG. 1 and FIG. 4 , the threaded hole e1 and the swing rod 10 are connected together by connecting bolts 11 . The threaded hole f1 is installed with a jack screw to fix the floating ball connector 9 and the second connecting pipe 19 together. The floating ball connector 9 is provided with an inner threaded hole d1 for easy installation with the floating ball 12 .

转角传感器是编码器和转轴的组合,当转轴发生转动时编码器输出电信号标记转角。第一转角传感器7固定在第一安装座6上,如图3所示,其转轴穿在第一连接管17中,第一连接管17和摆杆连接件8通过顶丝固定在一起。这样摆杆10的转动会带动第一转角传感器7的转轴转动。类似地,第二转角传感器14固定在第二安装座13上,如图4所示,其转轴穿在第二连接管19中,第二连接管19和浮球连接件9通过顶丝固定在一起。这样浮球12的转动会带动第二转角传感器14的转轴转动。The rotation angle sensor is a combination of an encoder and a rotating shaft. When the rotating shaft rotates, the encoder outputs an electrical signal to mark the rotation angle. The first rotation angle sensor 7 is fixed on the first mounting seat 6 , as shown in FIG. 3 , its rotating shaft is passed through the first connecting pipe 17 , and the first connecting pipe 17 and the swing rod connecting piece 8 are fixed together by a jack wire. In this way, the rotation of the pendulum rod 10 will drive the rotation shaft of the first rotation angle sensor 7 to rotate. Similarly, the second rotation angle sensor 14 is fixed on the second mounting base 13, as shown in FIG. 4, its rotating shaft is passed through the second connecting pipe 19, and the second connecting pipe 19 and the floating ball connecting piece 9 are fixed on the second connecting pipe 19 through the jack wire Together. In this way, the rotation of the floating ball 12 will drive the rotation shaft of the second rotation angle sensor 14 to rotate.

如图1和6所示,浮球12可以是一个空心圆球,也可以是一个椭圆形空心球体。浮球12漂浮在水上,大约1/3直径的球缺浸没在水中。水位升降使浮球12升降,使与其连接的摆杆10、摆杆连接件8、浮球连接件9、第二安装座13、第一转角传感器转轴一起绕第一销16转动,第一转角传感器7将给出水位数据;水流速度v给浮球12一个推力,使与其连接的浮球连接件9、第二转角传感器转轴一起绕第二销18产生力矩,与第一扭簧20和第二扭簧21产生的力矩平衡,可以求出浮球受到的推力,从而检测到流速。As shown in Figs. 1 and 6, the floating ball 12 may be a hollow sphere, or may be an elliptical hollow sphere. The floating ball 12 floats on the water, and approximately 1/3 of the diameter of the ball is submerged in the water. When the water level rises and falls, the float ball 12 is raised and lowered, so that the swing rod 10, the swing rod connecting piece 8, the floating ball connecting piece 9, the second mounting seat 13, and the rotating shaft of the first angle sensor rotate together around the first pin 16. The sensor 7 will give the water level data; the water flow velocity v will give a thrust to the float 12, so that the float connecting piece 9 connected to it and the rotating shaft of the second rotation angle sensor together generate a moment around the second pin 18, and the first torsion spring 20 and the first torsion spring 20 and the first torsion spring 20. The torque generated by the two torsion springs 21 is balanced, and the thrust force received by the floating ball can be obtained, thereby detecting the flow velocity.

参见图7,电控箱1的控制装置包括电源43、处理单元48、4G模块51、置零开关54、电磁继电器中断开关53。电源43为控制装置的各个部分供电。第一转角传感器7和第二转角传感器14通过模拟数字转换电路与处理单元48信号连接。4G模块51、置零开关54和电磁继电器中断开关53分别与处理单元48通信连接。Referring to FIG. 7 , the control device of the electric control box 1 includes a power supply 43 , a processing unit 48 , a 4G module 51 , a zero-setting switch 54 , and an electromagnetic relay interruption switch 53 . The power supply 43 powers the various parts of the control device. The first rotational angle sensor 7 and the second rotational angle sensor 14 are signal-connected to the processing unit 48 via an analog-to-digital conversion circuit. The 4G module 51 , the zero-setting switch 54 and the electromagnetic relay interruption switch 53 are respectively connected in communication with the processing unit 48 .

参见图8,电控箱1的控制装置还包括电源开关44、多路电源分电板45、分压模块46、电磁继电器49、第一降压模块47、第二降压模块50、RS232转TTL模块52、第一排母58、第二排母57、第三排母60、第四排母62、5V排母端55、GND2排母端56、第一电阻59、第二电阻61及GND1排母端63共同组成内部电路。Referring to FIG. 8 , the control device of the electric control box 1 further includes a power switch 44 , a multi-channel power distribution board 45 , a voltage dividing module 46 , an electromagnetic relay 49 , a first step-down module 47 , a second step-down module 50 , and an RS232 converter. TTL module 52, first row female 58, second row female 57, third row female 60, fourth row female 62, 5V female row terminal 55, GND2 row female terminal 56, first resistor 59, second resistor 61 and The female terminals 63 of the GND1 row together form an internal circuit.

具体地,电源43正极出来接电源开关44,电源开关44出来接多路电源分电板45的正极,电源43负极出来接多路电源分电板45的负极,用于给整个电路控制系统供电。Specifically, the positive pole of the power supply 43 is connected to the power switch 44, the power switch 44 is connected to the positive pole of the multi-channel power distribution board 45, and the negative pole of the power supply 43 is connected to the negative pole of the multi-channel power distribution board 45, which is used to supply power to the entire circuit control system. .

多路电源分电板45出来分为4路,第一路VCC端接分压模块46的正极,GND端接分压模块的负极。第二路VCC端接第一降压模块47的正极输入端,GND端接第一降压模块47的负极输入端。第三路VCC端接第二降压模块50的正极输入端,GND端接第二降压模块50的负极输入端。第四路VCC端接4G模块51的正极,GND端接4G模块51的负极。The multi-channel power distribution board 45 is divided into 4 channels, the first channel VCC terminal is connected to the positive pole of the voltage divider module 46, and the GND terminal is connected to the negative pole of the voltage divider module. The second VCC terminal is connected to the positive input terminal of the first step-down module 47 , and the GND terminal is connected to the negative input terminal of the first step-down module 47 . The third VCC terminal is connected to the positive input terminal of the second step-down module 50 , and the GND terminal is connected to the negative input terminal of the second step-down module 50 . The fourth VCC terminal is connected to the positive pole of the 4G module 51 , and the GND terminal is connected to the negative pole of the 4G module 51 .

分压模块46的OUT端接处理单元48的A3端口,GND端接GND1排母端63。用于检测电源43剩余电量。The OUT terminal of the voltage dividing module 46 is connected to the A3 port of the processing unit 48 , and the GND terminal is connected to the GND1 row female terminal 63 . Used to detect the remaining power of the power supply 43 .

第一降压模块47的OUT+端接处理单元48的电源正极,OUT-端接处理单元48的电源负极。用于获得12V电源为处理单元48供电。The OUT+ terminal of the first step-down module 47 is connected to the positive pole of the power supply of the processing unit 48 , and the OUT- terminal is connected to the negative pole of the power supply of the processing unit 48 . Used to obtain the 12V power supply to power the processing unit 48 .

第二降压模块50的输出分四路,第一路的OUT+接电磁继电器49的VCC端,OUT-接电磁继电器49的GND端。第二路的OUT+接5V排母端55,OUT-接GND1排母端63。第三路的OUT+端接电磁继电器中断开关53的正极。第四路的OUT+端接置零开关54的正极。作用:获得5v电源,为电磁继电器49、电磁继电器中断开关53、置零开关54供电。The output of the second step-down module 50 is divided into four channels, OUT+ of the first channel is connected to the VCC terminal of the electromagnetic relay 49 , and OUT- is connected to the GND terminal of the electromagnetic relay 49 . The OUT+ of the second channel is connected to the 5V bus terminal 55, and the OUT- is connected to the GND1 bus terminal 63. The OUT+ terminal of the third channel is connected to the positive pole of the electromagnetic relay interrupt switch 53 . The OUT+ terminal of the fourth channel is connected to the positive pole of the zero-setting switch 54 . Function: Obtain 5v power supply to supply power to electromagnetic relay 49, electromagnetic relay interrupt switch 53, and zero-setting switch 54.

电磁继电器49的常开端及公共端输出共两路,第一路公共端接5V排母端55,常开端接第一转角传感器7的VCC端。第二路公共端接5V排母端55,常开端接第二转角传感器14的VCC端。电磁继电器49的IN1端接处理单元48的8号端口,电磁继电器49的IN2端接处理单元48的9号端口。用于控制第一转角传感器7和第二转角传感器14的通断电,节省电源电量。The normally open terminal and the common terminal of the electromagnetic relay 49 have a total of two outputs. The second common terminal is connected to the 5V bus terminal 55 , and the normally open terminal is connected to the VCC terminal of the second rotation angle sensor 14 . The IN1 terminal of the electromagnetic relay 49 is connected to the No. 8 port of the processing unit 48 , and the IN2 terminal of the electromagnetic relay 49 is connected to the No. 9 port of the processing unit 48 . It is used to control the power on and off of the first rotation angle sensor 7 and the second rotation angle sensor 14 to save power.

RS232转TTL模块52的TX端口接处理单元48的TX0端口,RS232转TTL模块52的RX端口接处理单元48的RX0端口,RS232转TTL模块52的VCC端口接5V排母端55,RS232转TTL模块52的GND端口接GND1排母端63。The TX port of the RS232 to TTL module 52 is connected to the TX0 port of the processing unit 48, the RX port of the RS232 to TTL module 52 is connected to the RX0 port of the processing unit 48, the VCC port of the RS232 to TTL module 52 is connected to the 5V female terminal 55, and the RS232 to TTL The GND port of the module 52 is connected to the female terminal 63 of the GND1 row.

第一转角传感器7的OUT端接处理单元48的A1端口,GND端接GND1排母端63。用于通过第一转角传感器7转轴转过的角度换算出液位。The OUT terminal of the first rotation angle sensor 7 is connected to the A1 port of the processing unit 48 , and the GND terminal is connected to the GND1 row female terminal 63 . It is used to convert the liquid level through the angle rotated by the rotation axis of the first rotation angle sensor 7 .

第二转角传感器14的OUT端接处理单元48的A2端口,GND端接GND1排母端63。用于通过第二转角传感器14转轴转过的角度换算出流速。The OUT terminal of the second rotation angle sensor 14 is connected to the A2 port of the processing unit 48 , and the GND terminal is connected to the GND1 row female terminal 63 . It is used to convert the flow velocity through the angle through which the rotation shaft of the second rotation angle sensor 14 rotates.

置零开关54正极端接第二降压模块50的OUT+端,负极端接第一排母58。由于每次安装位置不能保证相同,置零开关54可以在任意位置让测得数据置零。The positive terminal of the zero-setting switch 54 is connected to the OUT+ terminal of the second step-down module 50 , and the negative terminal is connected to the first row bus 58 . Since the installation position cannot be guaranteed to be the same every time, the zero-setting switch 54 can set the measured data to zero at any position.

电磁继电器中断开关53正极端接第二降压模块50的OUT+端,负极接第四排母62。用于控制电磁继电器49的通断,从而控制第一转角传感器7和第二转角传感器14的通断电。The positive terminal of the electromagnetic relay interrupt switch 53 is connected to the OUT+ terminal of the second step-down module 50 , and the negative terminal is connected to the fourth row bus 62 . It is used to control the on-off of the electromagnetic relay 49, so as to control the on-off of the first rotation angle sensor 7 and the second rotation angle sensor 14.

第一排母58输出两路,一路接处理单元48的3号端口,一路接第一电阻59。第四排母62输出两路,一路接处理单元48的2号端口,一路接第二电阻61。第二排母57输出接GND2排母端56。第三排母60输出接GND2排母端56。GND2排母端56接处理单元48的GND端口。The first row of females 58 has two outputs, one is connected to the No. 3 port of the processing unit 48 , and the other is connected to the first resistor 59 . The fourth row female 62 has two outputs, one is connected to the No. 2 port of the processing unit 48 , and the other is connected to the second resistor 61 . The output of the second row female 57 is connected to the GND2 row female terminal 56 . The output of the third row female 60 is connected to the GND2 row female terminal 56 . The female terminal 56 of the GND2 row is connected to the GND port of the processing unit 48 .

本实施例的浮球-扭簧式液位流速在线检测装置的整体工作过程简述如下:The overall working process of the floating ball-torsion spring type liquid level and flow rate online detection device of the present embodiment is briefly described as follows:

液位测量过程:按下电源开关44,给整个控制装置供电。人工拉动浮球12的初始位置置于最底部,测量摆杆10与竖直方向的初始夹角θ,然后按下置零开关54将第一转角传感器7当前的数值置0。当液位升高时,水中的浮球12会随着液位向上。与浮球12连接的浮球连接件9、第二安装座13会上移,带动摆杆10、摆杆连接件8以第一销16为轴做相对转动,从而使第一转角传感器7的转轴转过一定的角度。第一转角传感器7的模拟信号输入到处理单元48实时读取角度β,通过转过的角度和液位之间的关系H=Lcosθ-Lcos(θ+β)+h。如图2所示:H液位高度、L摆杆长度、θ初始角度、β实时测得转过的角度、浮球浸入液面的深度。在处理单元48中进行换算输出液位的高度。通过4G模块独有的ID地址将数据上传到云端,4G模块通过创建虚拟串口的形式,远程PC端通过读取虚拟串口的形式在线实时监测液位高度。Liquid level measurement process: Press the power switch 44 to supply power to the entire control device. Manually pull the initial position of the float 12 to the bottom, measure the initial angle θ between the pendulum 10 and the vertical direction, and then press the zero-set switch 54 to set the current value of the first rotation angle sensor 7 to 0. When the liquid level rises, the floating ball 12 in the water will go up with the liquid level. The floating ball connecting piece 9 and the second mounting seat 13 connected with the floating ball 12 move up, and drive the swing rod 10 and the swing rod connecting piece 8 to rotate relative to the first pin 16 as the axis, so that the first rotation angle sensor 7 is rotated. The shaft rotates through a certain angle. The analog signal of the first rotation angle sensor 7 is input to the processing unit 48 to read the angle β in real time, through the relationship between the rotated angle and the liquid level H=Lcosθ-Lcos(θ+β)+h. As shown in Figure 2: H liquid level height, L pendulum rod length, θ initial angle, β real-time measured rotation angle, and the depth of the floating ball immersed in the liquid surface. The height of the output liquid level is converted in the processing unit 48 . The data is uploaded to the cloud through the unique ID address of the 4G module. The 4G module creates a virtual serial port, and the remote PC terminal monitors the liquid level in real time online in the form of reading the virtual serial port.

流速测量过程:按下电源开关44,给整个控制系统供电。使浮球的初始位置置于最低部,然后按下置零开关54,将第二转角传感器14在没有流速的情况下的数值置0。当有流速时,浮球12受到推力作用,与浮球12相连接的浮球连接件9会以第二销18为轴做相对转动,从而使第二转角传感器14转过一定的角度。转角传感器14的模拟信号输入到处理单元48实时读取角度γ,根据浮球受到的推力产生的力矩与扭簧产生的力矩相平衡的公式F*L1=K*γ,从而可以求出浮球受到的推力F。F:浮球受到的推力,L1:浮球到第二销的距离,r:浮球转过的角度,K:扭簧的弹簧常数。再通过力和流速之间的关系F=0.5Cρv2A(C:无因次阻力系数,v:流速,A:物体的迎流面积,ρ:流体密度)在处理单元48中换算输出流速的大小。通过4G模块独有的ID地址将数据上传到云,4G模块通过创建虚拟串口的形式,远程PC端通过读取虚拟串口的形式在线实时检测流速大小。Flow rate measurement process: Press the power switch 44 to supply power to the entire control system. Set the initial position of the float to the lowest part, and then press the zero-setting switch 54 to set the value of the second rotation angle sensor 14 to 0 when there is no flow velocity. When there is a flow rate, the floating ball 12 is subjected to thrust, and the floating ball connecting piece 9 connected to the floating ball 12 will rotate relative to the second pin 18, so that the second rotation angle sensor 14 rotates through a certain angle. The analog signal of the rotation angle sensor 14 is input to the processing unit 48 to read the angle γ in real time, according to the formula F*L1=K*γ that the torque generated by the thrust received by the floating ball is balanced with the torque generated by the torsion spring, so that the floating ball can be calculated received thrust F. F: The thrust of the floating ball, L1: The distance from the floating ball to the second pin, r: The angle that the floating ball rotates, K: The spring constant of the torsion spring. The relationship between the passing force and the flow velocity F=0.5Cρv 2 A (C: dimensionless resistance coefficient, v: flow velocity, A: the up-flow area of the object, ρ: fluid density) is converted into the output flow velocity in the processing unit 48. size. The data is uploaded to the cloud through the unique ID address of the 4G module. The 4G module creates a virtual serial port, and the remote PC terminal detects the flow rate online in real time by reading the virtual serial port.

以上已经描述了本公开的各实施例,上述说明是示例性的,并非穷尽性的,并且也不限于所披露的各实施例。在不偏离所说明的各实施例的范围和精神的情况下,对于本技术领域的普通技术人员来说许多修改和变更都是显而易见的。本文中所用术语的选择,旨在最好地解释各实施例的原理、实际应用或对市场中的技术改进,或者使本技术领域的其它普通技术人员能理解本文披露的各实施例。Various embodiments of the present disclosure have been described above, and the foregoing descriptions are exemplary, not exhaustive, and not limiting of the disclosed embodiments. Numerous modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen to best explain the principles of the embodiments, the practical application or technical improvement in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. The utility model provides a floater-torsional spring formula liquid level velocity of flow on-line measuring device which characterized in that, the device includes:
a control circuit comprising a processing unit and a communication unit;
the first rotation angle sensor and the second rotation angle sensor are respectively in communication connection with the processing unit, the acquired signal data are sent to the processing unit for calculation, and calculation results are sent out through the communication unit;
the swing rod is connected to the fixing plate through a first corner sensor, and the floating ball is connected to the swing rod through a second corner sensor.
2. The floating ball-torsion spring type liquid level and flow rate online detection device according to claim 1, wherein the first and second rotation angle sensors comprise an encoder and a rotating shaft, and the encoder outputs an electric signal to mark a rotation angle when the rotating shaft rotates.
3. The floating ball-torsion spring type liquid level and flow rate online detection device according to claim 2, further comprising:
the first mounting seat is fixed on the fixing plate, and the first rotating angle sensor is fixedly mounted on the first mounting seat;
the first pin and the first connecting pipe are arranged on the first mounting seat, a rotating shaft of the first rotating angle sensor is fixedly penetrated in the first connecting pipe, the first connecting pipe is connected with the swing rod together, and the first pin is used as a shaft to rotate, so that the rotating shaft of the first rotating angle sensor rotates by a certain angle.
4. The floating ball-torsion spring type liquid level and flow rate online detection device according to claim 3, further comprising a swing rod connecting piece, wherein one end of the swing rod connecting piece is connected to the swing rod, and the other end of the swing rod connecting piece is connected to the first connecting pipe;
the first mounting seat is a rectangular seat with a U-shaped opening, and the width of the opening is matched with that of the swing rod connecting piece.
5. The floating ball-torsion spring type liquid level and flow rate online detection device according to claim 2, further comprising:
the second mounting seat is fixed on the oscillating rod, and the second corner sensor is fixedly mounted on the second mounting seat;
the second connecting pipe is connected with the floating ball and rotates by taking the second pin as a shaft, so that the rotating shaft of the second corner sensor rotates by a certain angle.
6. The floating ball-torsion spring type liquid level and flow rate online detection device according to claim 5, further comprising a first torsion spring and a second torsion spring, which are respectively disposed at two ends of the second connection pipe, so that the second connection pipe generates a moment when rotating around the second pin.
7. The floating ball-torsion spring type liquid level and flow rate online detection device according to claim 6, further comprising a floating ball connecting piece, wherein one end of the floating ball connecting piece is connected to the floating ball, and the other end of the floating ball connecting piece is connected to the second connecting pipe;
the second mounting seat is a rectangular seat with a rectangular opening, and the width of the opening is matched with the width of the floating ball connecting piece and the lengths of the first torsion spring and the second torsion spring.
8. The floating ball-torsion spring type liquid level and flow rate online detection device according to claim 1, wherein the control circuit further comprises a zero switch in communication connection with the processing unit.
9. The floating ball-torsion spring type liquid level and flow rate online detection device according to claim 1, wherein the control circuit further comprises a power supply for supplying power to a circuit module in the control circuit.
10. The floating ball-torsion spring type liquid level and flow rate online detection device according to claim 9, wherein the control circuit further comprises an electromagnetic relay and an electromagnetic relay interrupt switch;
the first and second rotation angle sensors are connected to the power supply through electromagnetic relays;
the electromagnetic relay interruption switch is in communication connection with the control unit and is used for controlling the on-off of the electromagnetic relay.
CN201911343302.8A 2019-12-24 2019-12-24 Floating ball-torsion spring type liquid level and flow rate online detection device Pending CN110879085A (en)

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