Pipeline leakage monitoring system for vehicle urea filling machine

Abstract

The utility model discloses a pipeline leakage monitoring system for an automotive urea filling machine, and the system comprises a liquid storage tank which is provided with a first electric valve body; the filling machine is provided with a filling metering pipeline assembly which is connected with the liquid storage tank, and the joint of the filling metering pipeline assembly is an easy-to-leak point; the liquid receiving disc is installed in the filling machine, the liquid receiving disc is provided with a liquid leakage sensor, and the liquid leakage sensor sends out a liquid leakage signal when detecting the urea solution; the alarm device gives an alarm when receiving the liquid leakage signal, and the alarm linkage control device can control the first electric valve body on the liquid storage tank to be closed when receiving the liquid leakage signal; and the operation management platform receives the liquid leakage signal to remotely give an alarm. When the filling machine leaks, the liquid leakage sensor is conducted so as to send out a liquid leakage signal, the alarm linkage control device controls the alarm device and the first electric valve body to give an alarm and interrupt circulation of the urea solution after receiving the liquid leakage signal, the detection mode is fast and effective, the detection cost is low, and remote alarm is achieved through the operation management platform.

Description

Technical Field

[0001] The present application relates to the technical field of liquid leakage treatment, and in particular to a pipeline leakage monitoring system for a vehicle urea filling machine. Background Art

[0002] Urea solution, a must-have for diesel vehicles as a nitrogen oxide reduction agent, is now essential for diesel vehicles. Diesel vehicles use SCR (Selective Catalytic Reduction) technology for exhaust treatment, and urea is a necessary additive for SCR solutions. Urea dispensing machines enable storage / dispensing, metering, and automated billing of urea. They are widely used in logistics parks, highway service areas, and highway auto parts stores to provide urea dispensing services for diesel vehicles.

[0003] There are various pipes inside the automotive urea filling machine. If the pipes are not sealed, pipe leakage often occurs. Moreover, as the automotive urea filling machine ages, the internal pipes of the automotive urea filling machine will age and cause pipe leakage, thereby causing environmental pollution and loss of automotive urea.

[0004] Currently, leak detection in automotive urea dispensers relies primarily on manual inspection, which lacks continuous monitoring and automatic alarms. Furthermore, because components and pipelines are installed within the equipment housing, timely detection is difficult. Commonly used pipeline leak detection technologies, such as sound detection, pressure monitoring, and liquid level change, are not well suited to the process environment of urea dispenser pipelines or are costly. Summary of the Invention

[0005] In view of this, an object of an embodiment of the present application is to provide a pipeline leakage monitoring system for a vehicle urea dispenser, so as to solve the technical problem of being unable to quickly, continuously and effectively detect pipeline leakage of a vehicle urea dispenser.

[0006] A pipeline leakage monitoring system for a vehicle urea dispenser according to an embodiment of the present application includes:

[0007] a liquid storage tank, wherein urea solution is stored in the liquid storage tank and a first electric valve body is provided on the liquid storage tank for controlling the flow of the urea solution;

[0008] A filling machine, wherein the filling machine is provided with a filling metering pipeline assembly connected to the liquid storage tank, and the connection point inside the filling metering pipeline assembly is a leak-prone point;

[0009] A liquid collecting pan is installed inside the filling machine and is located below the leak-prone point of the filling metering pipe assembly to collect leaked urea solution. A liquid leakage sensor is provided at the bottom of the liquid collecting pan, and the liquid leakage sensor can send a leakage signal when detecting urea solution;

[0010] The filling machine further includes an alarm device and an alarm linkage control device, wherein the alarm device is communicatively connected to the liquid leakage sensor and alarms when receiving a liquid leakage signal, and the alarm linkage control device is communicatively connected to the liquid leakage sensor and controls the first electric valve body on the liquid storage tank to close when receiving a liquid leakage signal;

[0011] An operation management platform is communicatively connected to the alarm linkage control device of at least one of the filling machines. The alarm linkage control device on the filling machine is connected to the operation management platform via network communication. The operation management platform can receive leakage signals sent by the alarm linkage control device of the filling machine to realize remote alarm.

[0012] In a possible embodiment, the filling metering pipeline assembly includes: a filling pump, a flow meter, a filter, a second electric valve body, a one-way valve, a first ball valve and a plurality of pipes connected in sequence, at least one of the pipes of the filling metering pipeline assembly is connected to the liquid storage tank; the leakage points of the filling metering pipeline assembly include: the connection points of the pipes between the filling pump, the flow meter, the filter, the second electric valve body, the one-way valve, and the first ball valve or the components themselves.

[0013] In a possible embodiment, the filling machine includes a filling machine base, the filling metering pipe assembly is arranged above the filling machine base, the liquid receiving tray is arranged on the filling machine base relative to the filling metering pipe assembly, and the alarm device and the alarm linkage control device are respectively arranged on the computer box of the filling machine.

[0014] In a possible implementation, the leakage sensor includes a processing unit and a probe. When the probe detects urea solution in the liquid receiving tray, it is turned on to generate an electrical signal. The processing unit transmits the leakage signal to the alarm device and the alarm linkage control device respectively.

[0015] In a possible implementation manner, the probe is provided with an alarm threshold, and when the urea solution in the liquid receiving tray exceeds a preset height, the probe reaches the alarm threshold and is turned on.

[0016] In a possible implementation manner, the preset height is in a range of 1.5 mm ± 0.5 mm.

[0017] In a possible implementation manner, the liquid leakage sensor is one or more of an electrode-type water immersion sensor, a photoelectric fixed-point sensor, and a cable-type water immersion sensor.

[0018] In a possible implementation manner, the alarm device includes an audible and visual alarm, which sounds an alarm and flashes when receiving a liquid leakage signal.

[0019] In a possible implementation manner, the liquid storage tank is provided with a liquid outlet, the first electric valve body is provided at the liquid outlet, and the filling metering pipeline assembly is sealedly connected to the liquid outlet through the pipeline.

[0020] In a possible implementation manner, the first electric valve body and the second electric valve body are solenoid valves.

[0021] The pipeline leakage monitoring system for automotive urea dispensers provided in the embodiments of the present application requires only a liquid collection pan located directly below the dispenser pipe, without altering the dispenser's own pipeline structure. A leakage sensor is located within the liquid collection pan. When the dispenser leaks, the leaked urea solution collects within the liquid collection pan. The leakage sensor contacts the leaked urea solution, causing it to conduct and emit a leakage signal. Upon receiving the leakage signal, the alarm linkage control device controls the alarm device and the first electric valve body to produce corresponding actions, thereby providing a leakage alarm warning and timely interrupting the flow of urea solution. This detection method is quick, effective, and low-cost. Furthermore, upon receiving the leakage signal, the alarm linkage control device transmits it to the operations management platform via a wireless network, enabling remote alarming through the operations management platform to alert operations center staff of the dispenser's leakage.

[0022] Furthermore, there's no need to add sensors to process piping or components, and the process piping design remains unchanged. Simply place a stainless steel liquid collection tray and leak sensor at the bottom of the dispenser, making installation simple. The liquid collection tray collects leaked solutions, preventing them from impacting the surrounding environment. The water leakage sensor monitors the solution in the liquid collection tray, enabling prompt detection and alarm of leaks.

[0023] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A front view of a urea filling machine of a pipeline leakage monitoring system for a vehicle urea filling machine provided in an embodiment of the present application is shown.

[0026] Figure 2 Shown Figure 1 Cross-sectional view along the DD direction.

[0027] Figure 3 Shown Figure 1 Cross-sectional view along the AA axis.

[0028] Figure 4 A front view of a liquid leakage sensor for a pipeline leakage monitoring system of a vehicle urea filling machine provided by an embodiment of the present application is shown.

[0029] Figure 5 A bottom view of a liquid leakage sensor for a pipeline leakage monitoring system of a vehicle urea filling machine provided in an embodiment of the present application is shown.

[0030] Figure 6 The figure shows the overall structure of a pipeline leakage monitoring system for a vehicle urea filling machine provided by an embodiment of the present application.

[0031] Among them, 1. Filling machine; 11. Filling metering pipeline assembly; 111. Filling pump; 112. Flow meter; 113. Filter; 114. Second electric valve body; 115. One-way valve; 116. First ball valve; 117. Second ball valve; 118. Three-way connector; 119. Liquid sight glass; 120. Three-way valve; 121. Liquid replenishing connector; 12. Filling machine base; 13. Computer case; 2. Liquid collecting tray; 3. Liquid leakage sensor; 31. Probe; 32. Wire; 4. Alarm device; 5. Liquid storage tank; 51. First electric valve body. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0033] Considering that automotive urea primarily consists of urea and water, a system with a liquid collection tray installed within the dispenser, each equipped with a leakage sensor, allows the dispenser to collect urea solution in the tray when a leak occurs. This triggers the leakage sensor to conduct and emit a leakage signal. Upon receiving the leakage signal, the alarm linkage control device controls the alarm device and the first electric valve to activate accordingly, providing a leak warning and timely interruption of urea solution flow. This detection method is fast, effective, and low-cost. Furthermore, upon receiving the leakage signal, the alarm linkage control device transmits it to the operations management platform via a wireless network. This platform then generates a remote alarm, alerting operations center staff of the dispenser's leakage, thus providing a remote reminder.

[0034] like Figures 1 to 6 As shown, a pipeline leakage monitoring system for a vehicle urea filling machine according to an embodiment of the present application includes: a liquid storage tank 5, a filling machine 1, a liquid receiving tray 2 and an operation management platform (not shown in the figure). The liquid storage tank 5 stores urea solution inside, and the first electric valve body 51 is preferably a solenoid valve, which is used to realize automatic control of the circulation or blocking of the urea solution inside the liquid storage tank 5. The filling machine 1 is connected to the liquid storage tank 5 through the filling metering pipeline assembly 11 inside it. By switching the state (open or closed) of the first electric valve body 51, the circulation or interruption of the urea solution inside the filling metering pipeline assembly 11 inside the filling machine 1 can be controlled. The liquid receiving tray 2 is installed inside the filling machine 1, and the liquid receiving tray 2 is located below the leakage point of the filling metering pipeline assembly 11. A leakage sensor 3 is provided at the bottom of the liquid receiving tray 2. The leakage sensor 3 can send a leakage signal when it detects urea solution.

[0035] During the operation of the filling machine 1, if a leak occurs at a leak-prone point in the filling metering pipeline assembly 11, the leaked urea solution will collect in the liquid receiving tray 2. The leakage sensor 3 will come into contact with the leaked urea solution, become conductive, and generate a leakage signal. The alarm device 4 is connected to the leakage sensor 3 and issues an alarm upon receiving the leakage signal. The alarm linkage control device (not shown in the figure) is connected to the leakage sensor 3 and can control the first electric valve body 51 on the liquid storage tank 5 to close upon receiving the leakage signal. The operation management platform can be connected to multiple devices and monitor the leakage of multiple filling machines 1 through a single operation pipeline platform. The alarm linkage control device on the filling machine 1 is connected to the operation management platform via network communication. The operation management platform can receive the leakage signal sent by the alarm linkage control device of the filling machine 1 to implement remote alarm.

[0036] The pipeline leakage monitoring system for a vehicle urea filling machine in an embodiment of the present application includes a filling metering pipeline assembly 11 including: a filling pump 111, a flow meter 112, a filter 113, a second electric valve body 114, a one-way valve 115, a first ball valve 116, a second ball valve 117, a three-way joint 118, a liquid sight glass 119 and a plurality of pipelines connected in sequence, and at least one pipeline of the filling metering pipeline assembly 11 is connected to the liquid storage tank 5. Since the filling pump 111, flow meter 112, filter 113, second electric valve body 114, one-way valve 115, first ball valve 116 and other functional components are respectively connected to the pipeline, if there is a lack of effective sealing or aging problems after long-term use, the connection points of the pipelines between the filling pump 111, flow meter 112, filter 113, second electric valve body 114, one-way valve 115, first ball valve 116, second ball valve 117, three-way joint 118, liquid sight glass 119, three-way valve 120, and liquid replenishing joint 121 or the components themselves may leak.

[0037] The liquid receiving tray 2 is arranged in the filling machine 1 relative to these leaking points, and can receive every drop of leaked urea solution, thereby preventing the urea solution from leaking into the filling machine 1 and corroding the internal structure of the filling machine 1.

[0038] The pipeline leakage monitoring system for a vehicle urea filling machine according to an embodiment of the present application includes a filling machine 1 including a filling machine base 12, a filling metering pipeline assembly 11 arranged above the filling machine base 12, and a liquid receiving pan 2 arranged on the filling machine base 12 relative to the filling metering pipeline assembly 11. The number of the liquid receiving pans 2 can be set to one or more, and the specific number of settings can match the size of the filling machine base 12. The shape of the liquid receiving pan 2 can be a rectangular pan, a circular pan, etc., and the specific setting shape can match the shape of the filling machine base 12. The material of the liquid receiving pan 2 is stainless steel, which has strong corrosion resistance and extends the service life of the liquid receiving pan 2.

[0039] The alarm device 4 and the alarm linkage control device are respectively arranged on the computer box 13 of the filling machine 1, so that the status of the alarm device can be observed, thereby quickly handling the leakage when there is someone on duty.

[0040] In the pipeline leakage monitoring system for a vehicle urea filling machine according to the embodiment of the present application, the leakage sensor 3 includes a processing unit and a probe 31. A wire 32 is provided on the top of the leakage sensor 3 to connect to an external power supply. When the probe 31 detects that there is urea solution in the liquid receiving tray 2, it is turned on to generate an electrical signal. The processing unit transmits the leakage signal to the alarm device 4 and the alarm linkage control device respectively.

[0041] In combination with the above embodiments, the liquid leakage sensor 3 is one or more of an electrode-type water immersion sensor, a photoelectric fixed-point sensor, and a cable-type water immersion sensor. The probe 31 of the liquid leakage sensor 3 can be set to two. When a certain amount of urea solution is collected inside the liquid receiving tray 2, the two probes 31 are connected to generate a conduction signal. The processing unit receives and processes the conduction signal and then converts the conduction signal into a liquid leakage signal. The alarm device 4 and the alarm linkage control device respectively receive the liquid leakage signal and perform corresponding alarm operations.

[0042] Furthermore, the two probes 31 are based on the principle of liquid conductivity. When the two bottom electrodes are normal, the two-pole probe 31 is insulated by air, and when the probe 31 is immersed in water, the probe is conductive. A dedicated integrated circuit converts the change in conductivity after immersion into a standard voltage. When the immersion height of the sensor probe 31 reaches the warning threshold, an alarm signal is generated. Preferably, the alarm height range of the two probes 31 is 1.5mm±0.5mm, that is, the leakage measurement accuracy of the two probes 31 is 1.5mm±0.5mm.

[0043] The pipeline leakage monitoring system for a vehicle urea filling machine in the embodiment of the present application, the alarm device 4 includes an audible and visual alarm, and the alarm signal is connected to the audible and optical indicator light, which can perform an audible and visual alarm to remind the on-site staff that there is a leakage in the filling machine 1. The on-site staff manually closes the valve at the root of the liquid outlet of the liquid storage tank 5 to avoid the leakage from worsening. The 4G communication module configured in the filling machine can also be used to transmit the alarm signal to the urea machine operation and management platform to realize the remote alarm function. The alarm signal can be linked with the valve at the root of the liquid outlet of the liquid storage tank to automatically close the valve (the valve body in this case is a solenoid valve), thereby solving the leakage monitoring problem of the unattended urea self-service filling machine 1.

[0044] In the pipeline leakage monitoring system for a vehicle urea filling machine according to an embodiment of the present application, a liquid outlet is provided at the root of the liquid storage tank 5, a first electric valve body 51 is provided at the liquid outlet, and at least one pipe in the filling metering pipe assembly 11 is sealed and connected to the liquid outlet.

[0045] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

Claims

1. A pipeline leakage monitoring system for a vehicle urea filling machine, characterized in that: include: a liquid storage tank, wherein urea solution is stored in the liquid storage tank and a first electric valve body is provided on the liquid storage tank for controlling the flow of the urea solution; A filling machine, wherein the filling machine is provided with a filling metering pipe assembly to be connected to the liquid storage tank, and the connection point inside the filling metering pipe assembly is a leak-prone point; A liquid collecting pan is installed inside the filling machine and is located below a leak-prone point of the filling metering pipe assembly, for collecting leaked urea solution. A liquid leakage sensor is provided at the bottom of the liquid collecting pan, and the liquid leakage sensor can send a leakage signal when detecting urea solution; The filling machine further includes an alarm device and an alarm linkage control device, wherein the alarm device is communicatively connected to the liquid leakage sensor and alarms when receiving a liquid leakage signal, and the alarm linkage control device is communicatively connected to the liquid leakage sensor and controls the first electric valve body on the liquid storage tank to close when receiving a liquid leakage signal; An operation management platform is communicatively connected to the alarm linkage control device of at least one of the filling machines. The alarm linkage control device on the filling machine is connected to the operation management platform via network communication. The operation management platform can receive leakage signals sent by the alarm linkage control device of the filling machine to realize remote alarm.

2. The pipeline leakage monitoring system for a vehicle urea filling machine according to claim 1, characterized in that: The filling metering pipeline assembly includes: a filling pump, a flow meter, a filter, a second electric valve body, a one-way valve, a first ball valve and a plurality of pipelines connected in sequence. At least one pipeline of the filling metering pipeline assembly is connected to the liquid storage tank; the leakage points of the filling metering pipeline assembly include: the connection points of the pipelines between the filling pump, the flow meter, the filter, the second electric valve body, the one-way valve, and the first ball valve or the components themselves.

3. The pipeline leakage monitoring system for a vehicle urea filling machine according to claim 2, characterized in that: The filling machine includes a filling machine base, the filling metering pipeline assembly is arranged above the filling machine base, the liquid receiving tray is arranged on the filling machine base relative to the filling metering pipeline assembly, and the alarm device and the alarm linkage control device are respectively arranged on the computer box of the filling machine.

4. The pipeline leakage monitoring system for a vehicle urea filling machine according to claim 1, characterized in that: The liquid leakage sensor includes a processing unit and a probe. When the probe detects that there is urea solution in the liquid receiving tray, it is turned on to generate an electrical signal. The processing unit transmits the liquid leakage signal to the alarm device and the alarm linkage control device respectively.

5. The pipeline leakage monitoring system for a vehicle urea filling machine according to claim 4, characterized in that: The probe is provided with an alarm threshold. When the urea solution in the liquid receiving tray exceeds a preset height, the probe reaches the alarm threshold and is turned on.

6. The pipeline leakage monitoring system for a vehicle urea filling machine according to claim 5, characterized in that: The range of the preset height is 1.5 mm ± 0.5 mm.

7. The pipeline leakage monitoring system for a vehicle urea filling machine according to claim 2, characterized in that: The liquid leakage sensor is one or more of an electrode-type water immersion sensor, a photoelectric fixed-point sensor, and a cable-type water immersion sensor.

8. The pipeline leakage monitoring system for a vehicle urea filling machine according to claim 1, characterized in that: The alarm device includes an audible and visual alarm, which sounds an alarm and flashes when receiving a liquid leakage signal.

9. The pipeline leakage monitoring system for a vehicle urea filling machine according to claim 1, characterized in that: The liquid storage tank is provided with a liquid outlet, the first electric valve body is provided at the liquid outlet, and the filling metering pipeline assembly is sealedly connected to the liquid outlet through the pipeline.

10. The pipeline leakage monitoring system for a vehicle urea filling machine according to claim 2, characterized in that: The first electric valve body and the second electric valve body are solenoid valves.

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