Sensor for detecting whether liquid exists or not and leaking stoppage exists in pipeline or not

Abstract

The utility model provides a sensor for detecting whether liquid exists in a pipeline or not and leaking stoppage exists in the pipeline or not. The sensor comprises a first detection unit and a second detection unit, the second detection unit is used for detecting the flowing condition of liquid in the pipeline; the first detection unit adopts a photoelectric form and judges whether liquid exists in the pipeline by detecting whether infrared light is refracted or not; and the second detection unit adopts a photoelectric form, and judges the flow rate of the liquid by detecting whether the infrared light is blocked by an internal turbine or not. According to the utility model, whether liquid exists in the pipeline or not and the flowing condition of the liquid can be simultaneously detected, and whether blockage or leakage exists or not can be accurately judged, so that more diversified and strict application requirements can be met, and a more efficient, reliable and multifunctional integrated solution is provided for monitoring the liquid in the pipeline.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sensor technical field, concretely relates to a sensor for detecting whether liquid exists in pipeline and whether leakage exists. BACKGROUND

[0002] In modern industrial automation, water treatment plant pipeline monitoring, chemical solution pipeline monitoring, aquatic industry, consumer electronics involving pipeline liquid and other industries, real-time monitoring of the liquid state in the pipeline is crucial, traditional flow meters and liquid level sensors have been widely used in these industries, but they each have limitations.

[0003] Disadvantages of prior art:

[0004] 1. Single function limitation:

[0005] Most sensors on the market can only detect liquid flow or determine whether liquid exists in the pipeline, and cannot provide information about liquid flow rate at the same time, let alone directly detect whether the pipeline is blocked or leaking; such one-sided information is not enough to fully understand the health status of the pipeline.

[0006] 2. Lack of comprehensive judgment ability:

[0007] Using flow meters or liquid level sensors alone cannot achieve comprehensive monitoring of the liquid state in the pipeline. For example, if only relying on flow meters, it may be misreported as normal in the case of water pump stop working; and relying only on liquid level sensors cannot determine whether the liquid is flowing or flowing smoothly.

[0008] 3. Limited detection accuracy:

[0009] The existing technology often has low detection accuracy due to simple structure design, single signal processing method, etc., especially under complex working conditions (such as different viscosity, temperature change, etc.), which is prone to misjudgment.

[0010] 4. Application scene limitation:

[0011] Some specific types of sensors may not be suitable for application in some special environments, such as high corrosive medium, high temperature and high pressure environment, etc., which limits its wide applicability and reliability.

[0012] Therefore, the existing technology has deficiencies and needs further improvement. Utility model content

[0013] In view of the problems existing in the prior art, the utility model provides a sensor for detecting whether liquid exists in pipeline and whether leakage exists.

[0014] To achieve the above purpose, the specific scheme of the utility model is as follows:

[0015] The utility model provides a sensor of detecting whether pipeline has liquid and leak stoppage situation,

[0016] Including at least one first detection unit for detecting whether pipeline has liquid,

[0017] At least one second detection unit for detecting liquid flow condition in pipeline,

[0018] Wherein the first detection unit and second detection unit work together to determine whether there is the situation of blockage or leakage in pipeline.

[0019] Further, the first detection unit adopts photoelectric form, contains infrared emitter tube and infrared receiving tube, judges whether pipeline has liquid by detecting whether infrared light is refracted,

[0020] Or adopts the form of electric capacity, judges whether pipeline has liquid by measuring electric capacity value change,

[0021] Or adopts probe form, judges whether pipeline has liquid by the electric signal change produced by electrode and liquid contact.

[0022] Further, the photoelectric form further includes current-limiting resistor, voltage division sampling resistor,

[0023] The infrared emitter tube is used for generating and emitting infrared rays,

[0024] The infrared receiving tube is used for receiving infrared rays,

[0025] The current-limiting resistor is connected in series with the infrared emitter tube, and is used for limiting the current of the infrared emitter tube to prevent the infrared emitter tube from being burnt out due to overcurrent,

[0026] The voltage division sampling resistor is connected in series with the infrared receiving tube, and is used for generating a signal when receiving infrared light.

[0027] Further, the electric capacity form includes touch IC and filter capacitor,

[0028] The filter capacitor is connected with the touch IC, and is used for stabilizing the voltage of the touch IC,

[0029] The touch IC determines whether liquid is contained by measuring the change of the electric capacity value inside the pipeline.

[0030] Further, the probe form includes processing IC, second filter capacitor, amplification circuit and probe electrode,

[0031] The processing IC is connected with the second filter capacitor and the amplification circuit respectively, and the amplification circuit is connected with the two probe electrodes,

[0032] The filter capacitor is used for stabilizing the voltage of the power supply.

[0033] The amplification circuit is used for amplifying the electrode signal, so that the processing IC can capture the electric signal.

[0034] The processing IC is used for processing the amplified electric signal.

[0035] The probe electrode is used for being placed into the pipeline for detection.

[0036] Further, the second detection unit adopts a photoelectric form, and comprises an infrared emitting tube and an infrared receiving tube.

[0037] Or adopts a Hall element form, and the liquid flow rate is judged by detecting the voltage change caused by the magnet on the turbine passing through the Hall sensor.

[0038] Further, the Hall element form comprises a Hall sensor and a third filter capacitor.

[0039] The third filter capacitor is used for stabilizing the voltage.

[0040] The Hall sensor detects the flow of the liquid flow by detecting the NS level change of the magnet on the turbine.

[0041] Further, the sensor further comprises an upper cover, a lower cover, a turbine, a prism, a detection plate and a reflecting plate.

[0042] The upper cover and the lower cover are buckled to each other to form a containing space, and the upper cover and the lower cover are respectively provided with a water outlet and a water inlet.

[0043] The turbine is arranged between the upper cover and the lower cover, and the turbine is provided with a magnet.

[0044] The upper cover is provided with the detection plate, and the lower cover is provided with the reflecting plate.

[0045] The inner side of the upper cover is further provided with the prism.

[0046] Further, the sensor further comprises a user interface, which is used for outputting the detection result to an external controller or MCU for further processing.

[0047] The technical scheme of the utility model has the following beneficial effects:

[0048] 1. The comprehensive detection capability is significantly improved

[0049] Simultaneous detection of liquid presence and flow conditions: This invention not only detects the presence of liquid in the pipeline but also accurately determines the flow conditions of the liquid. By combining photoelectric, capacitive, or probe-based detection of liquid presence and monitoring liquid flow rate through Hall elements or photoelectric methods, comprehensive monitoring of the liquid state in the pipeline is achieved.

[0050] Dual detection of blockage and leakage: Unlike traditional single-function sensors, this invention can effectively identify whether the pipeline has blockage or leakage problems while detecting the presence of liquid. This multi-dimensional detection method greatly improves the accuracy and timeliness of fault diagnosis.

[0051] 2. Improve system safety and reliability

[0052] Prevent potential risks: By monitoring the liquid flow in the pipeline in real time, potential blockage or leakage events can be warned in advance, so that preventive measures can be taken to avoid safety accidents or production interruptions caused by these problems.

[0053] Ensure stable operation of equipment: For key industrial processes that rely on pipeline transmission of liquid (such as chemical industry, water treatment, etc.), this invention helps ensure the normal operation of the pipeline system, reduces unplanned downtime, and improves overall production efficiency.

[0054] 3. Optimize maintenance costs

[0055] Reduce maintenance frequency: By identifying potential problems earlier, targeted maintenance can be performed, reducing unnecessary regular inspections and maintenance workload, and saving human and material resources.

[0056] Prolong service life: Timely detection and resolution of pipeline problems can prevent small problems from becoming major failures, thereby protecting pipelines and related equipment from damage and extending their service life.

[0057] 4. Strong adaptability, wide application range

[0058] Suitable for various industries: This technology can be applied in various fields such as industrial automation, water treatment plants, and consumer electronics, meeting the pipeline liquid monitoring needs in different scenarios.

[0059] Cope with complex working conditions: The design takes into account various extreme environmental factors such as temperature changes and corrosive media, ensuring good performance in harsh conditions.

[0060] 5. Simplify product structure, easy to integrate

[0061] Modular design: Integrating liquid presence detection and flow detection functions into a compact structure simplifies the overall design of the product, making it easy to install and maintain.

[0062] Compatible with existing control system: provide user interface, facilitate access to existing controller or MCU, easy to realize data transmission and remote monitoring, promote intelligent management. BRIEF DESCRIPTION OF DRAWINGS

[0063] Figure 1 is the perspective view of the utility model;

[0064] Figure 2 is another perspective view of the utility model;

[0065] Figure 3 is the utility model's explosion map;

[0066] Figure 4 is the schematic diagram of the sensor installation of the utility model in the pipeline;

[0067] Figure 5 is the circuit diagram of the utility model using photoelectric form to detect whether there is liquid;

[0068] Figure 6 is the circuit diagram of the utility model using the capacitor form to detect whether there is liquid;

[0069] Figure 7 is the circuit diagram of the utility model using probe form to detect whether there is liquid;

[0070] Figure 8 is the circuit diagram of the utility model using photoelectric form to detect the liquid flow of pipeline;

[0071] Figure 9 is the circuit diagram of the utility model using photoelectric form to detect the liquid flow of pipeline;

[0072] In the drawing:

[0073] 1, upper cover, 2, lower cover, 3, turbine, 4, prism, 5, detection plate, 6, reflector plate. DETAILED DESCRIPTION

[0074] The utility model will be further described in detail below in combination with the drawings and examples.It can be understood that the specific examples described herein are only used to explain the utility model, and not limited to the utility model.In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0075] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two element's mutual action relation.For the ordinary skill in the art, the above-mentioned term can be understood in the utility model according to the specific meaning of the specific situation.

[0076] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional feature between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0077] In the description of the embodiment, the orientation or position relationship of the terms "on", "under", "front", "back", "left", "right" and the like is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0078] In combination Figures 1-9 As shown in the utility model provides a kind of sensor for detecting whether there is liquid in pipeline or not, including at least one for detecting whether there is liquid in pipeline first detection unit;

[0079] At least one second detection unit for detecting the flow condition of liquid in pipeline;

[0080] Wherein the first detection unit and second detection unit work together to determine whether there is congestion or leakage in pipeline.

[0081] The first detection unit adopts photoelectric form, contains infrared emitter tube and infrared receiving tube, judges whether there is liquid in pipeline by detecting whether infrared light is refracted;

[0082] Or adopt capacitance form, judges whether there is liquid in pipeline by measuring the change of capacitance value;

[0083] Or in the form of a probe, using the electrode and liquid contact generated electrical signal changes to determine whether there is liquid in the pipeline.

[0084] The photoelectric form also includes a current limiting resistor, a voltage dividing sampling resistor;

[0085] The infrared emitting tube is used to generate and emit infrared rays;

[0086] The infrared receiving tube is used to receive infrared rays;

[0087] The current limiting resistor is connected in series with the infrared emitting tube, which is used to limit the current of the infrared emitting tube and prevent the emitting tube from being burned out due to overcurrent;

[0088] The voltage dividing sampling resistor is connected in series with the infrared receiving tube, which is used to generate a signal when receiving infrared light.

[0089] The capacitance form includes a touch IC and a filter capacitor;

[0090] The filter capacitor is connected with the touch IC, which is used to stabilize the voltage of the touch IC;

[0091] The touch IC determines whether it contains liquid by measuring the change of the internal capacitance value of the pipeline.

[0092] The probe form includes a processing IC, a second filter capacitor, an amplification circuit, and a probe electrode;

[0093] The processing IC is connected with the second filter capacitor and the amplification circuit respectively, and the amplification circuit is connected with the two probe electrodes;

[0094] The filter capacitor is used to stabilize the voltage of the power supply;

[0095] The amplification circuit is used to amplify the electrode signal, so that the processing IC can capture the electrical signal;

[0096] The processing IC is used to process the amplified electrical signal;

[0097] The probe electrode is used to be placed in the pipeline for detection.

[0098] The second detection unit adopts a photoelectric form, which includes an infrared emitting tube and an infrared receiving tube, and determines the liquid flow rate by detecting whether the internal turbine 3 blocks the infrared light;

[0099] Or in the form of a Hall element, the liquid flow rate is determined by detecting the voltage change caused by the magnet on the turbine 3 passing through the Hall sensor.

[0100] The Hall element form includes a Hall sensor and a third filter capacitor;

[0101] The third filter capacitor is used to stabilize the voltage;

[0102] The Hall sensor detects the flow of the liquid flow by detecting the NS level change of the magnet on the turbine 3.

[0103] The sensor further comprises an upper cover 1, a lower cover 2, a turbine 3, a prism 4, a detection plate 5, and a reflective plate 6.

[0104] The upper cover 1 and the lower cover 2 are buckled to each other to form a containing space, and the upper cover 1 and the lower cover 2 are respectively provided with a water outlet and a water inlet.

[0105] The turbine 3 is arranged between the upper cover 1 and the lower cover 2, and the turbine 3 is provided with a magnet.

[0106] The upper cover 1 is provided with the detection plate 5, and the lower cover 2 is provided with the reflective plate 6.

[0107] The inner side of the upper cover 1 is further provided with the prism 4.

[0108] The sensor further comprises a user interface for outputting the detection result to an external controller or MCU for further processing.

[0109] The utility model principle is as follows:

[0110] I. Liquid in pipeline exists detection

[0111] The application provides three different technical schemes to detect whether there is liquid in the pipeline:

[0112] 1. Photoelectric form:

[0113] Structural components: infrared emitting tube, infrared receiving tube, current limiting resistor (for protecting the infrared emitting tube), voltage division sampling resistor (for generating a signal) and user interface.

[0114] Working principle: by emitting infrared light, the prism 4 is used to judge whether there is liquid in the pipeline according to the different light rays in the liquid and not in the liquid. When there is liquid in the pipeline, the infrared light is refracted, and the receiving tube cannot receive the signal; on the contrary, the reflected infrared light is received.

[0115] 2. Capacitance form:

[0116] Structural components: filter capacitor (stabilize voltage), touch IC (judge capacitance value change) and user interface.

[0117] Working principle: based on the capacitance sensing principle, whether the liquid contains liquid is determined by measuring the change of the capacitance value in the pipeline. When there is liquid in the pipeline, the capacitance value will change accordingly, and the touch IC makes a judgment accordingly.

[0118] 3. Probe form:

[0119] Structure: filter capacitor (stabilize power supply voltage), amplifier circuit (amplify electrode signal), processing IC (capture and process amplified electrical signal), and user interface.

[0120] Working principle: weak electrical signal generated by probe contact with liquid is amplified and analyzed by processing IC to determine whether there is liquid in the pipeline.

[0121] II. Detection of liquid flow condition in pipeline

[0122] To detect the flow condition of the liquid, the present application adopts two main technical solutions:

[0123] 1. Photoelectric form:

[0124] Structure: infrared emitter tube, infrared receiver tube, current limiting resistor, voltage dividing sampling resistor, and user interface.

[0125] Working principle: install a turbine 3 with a shielding structure inside the pipeline. As the liquid flows, the rotation of the turbine 3 will periodically block or not block the infrared light, causing the receiving end voltage to change in pulses. By calculating the number of pulses per unit time, the flow rate of the liquid can be obtained.

[0126] 2. Hall element form:

[0127] Structure: filter capacitor, Hall sensor, and user interface.

[0128] Working principle: install a magnet on the turbine 3. When the turbine 3 rotates with the liquid flow, the magnet passing through the Hall element will cause a change in its output voltage. By detecting the frequency of these voltage changes, information about the flow rate of the liquid can be obtained.

[0129] III. Comprehensive judgment of blockage or leakage

[0130] Normal working state: if the sensor detects the presence of liquid and normal flow rate, it indicates that there is no blockage or leakage in the current pipeline.

[0131] Possible blockage: if the liquid is detected but there is no flow rate (i.e. the turbine 3 is not moving) and the water pump is in working condition, it can be determined that the pipeline is blocked.

[0132] Possible leakage: when the liquid exists but the flow rate is abnormal (for example, the turbine 3 rotation frequency is different from the normal value), it may be due to leakage in front of the pipeline.

[0133] IV. Integration of data output and control system

[0134] User interface: all detection results will ultimately be transmitted to the external controller or MCU through the user interface for further processing and display. This design makes the sensor easy to integrate into existing automation systems, supporting remote monitoring and intelligent management.

[0135] In summary, the sensor combines multiple detection methods to monitor the presence and flow of liquid in the pipeline, accurately determine whether there is a blockage or leakage problem, and provide an efficient and reliable solution.

[0136] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the protection scope of the present application.

Claims

1. A sensor for detecting whether a pipe is blocked or leaking, comprising: at least one first detection unit for detecting whether there is liquid in the pipe; at least one second detection unit for detecting the flow of liquid in the pipe; wherein the first detection unit and the second detection unit work together to determine whether there is a blockage or a leak in the pipe. 2.A sensor according to claim 1, wherein: the first detection unit is in the form of a photoelectric sensor, comprising an infrared emitter and an infrared receiver, and detecting whether there is liquid in the pipe by detecting whether the infrared light is refracted; or in the form of a capacitor, and detecting whether there is liquid in the pipe by measuring the change in the capacitance value; or in the form of a probe, and detecting whether there is liquid in the pipe by using the change in the electrical signal generated by the contact between the electrode and the liquid. 3.A sensor according to claim 2, wherein: the photoelectric sensor further comprises a current-limiting resistor and a voltage-dividing sampling resistor; the infrared emitter is used to generate and emit infrared light; the infrared receiver is used to receive infrared light; the current-limiting resistor is connected in series with the infrared emitter to limit the current of the infrared emitter, preventing the emitter from being damaged by overcurrent; and the voltage-dividing sampling resistor is connected in series with the infrared receiver to generate a signal when infrared light is received. 4.A sensor according to claim 2, wherein: the capacitor comprises a touch IC and a filter capacitor; the filter capacitor is connected to the touch IC to stabilize the voltage of the touch IC; and the touch IC determines whether there is liquid in the pipe by measuring the change in the capacitance value inside the pipe. 5.A sensor according to claim 2, wherein: the probe comprises a processing IC, a second filter capacitor, an amplification circuit, and a probe electrode; the processing IC is connected to the second filter capacitor and the amplification circuit, respectively, and the amplification circuit is connected to the two probe electrodes; the filter capacitor is used to stabilize the voltage of the power supply; the amplification circuit is used to amplify the electrode signal, so that the processing IC can capture the electrical signal; the processing IC is used to process the amplified electrical signal; and the probe electrode is used to be placed in the pipe for detection. 6.A sensor according to claim 1, wherein: the second detection unit is in the form of a photoelectric sensor, comprising an infrared emitter and an infrared receiver, and detecting the flow rate of the liquid by detecting whether the infrared light is blocked by the internal turbine; or in the form of a Hall element, and detecting the flow rate of the liquid by detecting the change in voltage caused by the magnet on the turbine passing through the Hall sensor. 7.A sensor according to claim 6, wherein: the Hall element form comprises a Hall sensor and a third filter capacitor; the third filter capacitor is used to stabilize the voltage; and the Hall sensor detects the flow of the liquid by detecting the change in the NS level of the magnet on the turbine. 8.A sensor according to claim 1, wherein: the sensor further comprises an upper cover, a lower cover, a turbine, a prism, a detection plate, and a reflective plate; the upper cover and the lower cover are buckled to each other to form a containing space, and the upper cover and the lower cover are respectively provided with a water outlet and a water inlet. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The turbine is arranged between the upper cover and the lower cover, and a magnet is arranged on the turbine; A detection plate is arranged on the upper cover, and a light-reflecting plate is arranged on the lower cover; A prism is further arranged on the inner side of the upper cover.

9. The sensor according to any one of claims 1 to 3, characterized in that: The sensor further comprises a user interface for outputting the detection result to an external controller or MCU for further processing.

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