阅读说明：本技术 尿素泵清洗检测装置、系统及清洗检测方法 (Urea pump cleaning detection device, system and cleaning detection method ) 是由 沈卫东 周琪 张小平 冯逸斐 王雪 于 2021-09-18 设计创作，主要内容包括：本发明提供一种尿素泵清洗检测装置,包括：主控模块、电源模块、总线通信模块、驱动输出模块、触控显示模块、清洗泵、第一电磁阀、第二电磁阀、三通；所述主控模块分别连接电源模块、总线通信模块、驱动输出模块和触控显示模块；所述主控模块用于获取尿素泵的自诊断信息和/或根据从尿素泵获取的信号检测相应故障,并用于控制驱动输出模块；所述电源模块用于为尿素泵清洗检测装置提供电力；所述总线通信模块用于与尿素泵中的自诊断模块通信；所述驱动输出模块用于驱动清洗泵、第一电磁阀和第二电磁阀；所述触控显示模块用于提供人机交互界面、显示尿素泵的故障信息；本发明操作简单方便,提高了尿素泵的清洗效率。(The invention provides a urea pump cleaning detection device, comprising: the cleaning device comprises a main control module, a power supply module, a bus communication module, a driving output module, a touch display module, a cleaning pump, a first electromagnetic valve, a second electromagnetic valve and a tee joint; the main control module is respectively connected with the power supply module, the bus communication module, the driving output module and the touch display module; the main control module is used for acquiring self-diagnosis information of the urea pump and/or detecting corresponding faults according to signals acquired from the urea pump, and is used for controlling the driving output module; the power supply module is used for providing power for the urea pump cleaning detection device; the bus communication module is used for communicating with a self-diagnosis module in the urea pump; the driving output module is used for driving the cleaning pump, the first electromagnetic valve and the second electromagnetic valve; the touch display module is used for providing a human-computer interaction interface and displaying fault information of the urea pump; the urea pump cleaning device is simple and convenient to operate, and improves the cleaning efficiency of the urea pump.)

1. A urea pump washs detection device which characterized in that includes: the device comprises a main control module (2), a power supply module (3), a bus communication module (4), a driving output module (5), a touch display module (6), a cleaning pump (7), a first electromagnetic valve (8), a second electromagnetic valve (9) and a tee joint (10);

the main control module (2) is respectively connected with the power supply module (3), the bus communication module (4), the driving output module (5) and the touch display module (6);

the main control module (2) is used for acquiring self-diagnosis information of the urea pump (13) and/or detecting corresponding faults according to signals acquired from the urea pump (13) and controlling the drive output module (5);

the power supply module (3) is used for providing power for the urea pump cleaning detection device;

the bus communication module (4) is used for communicating with a self-diagnosis module in the urea pump (13);

the driving output module (5) is used for driving the cleaning pump (7), the first electromagnetic valve (8) and the second electromagnetic valve (9);

the touch display module (6) is used for providing a human-computer interaction interface and displaying fault information of the urea pump (13);

one end of the first electromagnetic valve (8) is connected with a first water tank (11) through a pipeline, and the other end of the first electromagnetic valve is connected with the first end of the tee joint (10) through a pipeline;

the inlet of the cleaning pump (7) is connected with a second water tank (12) through a pipeline, and the outlet of the cleaning pump (7) is connected with one end of a second electromagnetic valve (9) through a pipeline;

the other end of the second electromagnetic valve (9) is connected with the second end of the tee joint (10) through a pipeline;

and the third end of the tee joint (10) is used for being connected with a liquid inlet of the urea pump (13) through a pipeline.

2. The urea pump cleaning detection device of claim 1,

the driving output module (5) comprises at least three driving output circuits which are respectively used for driving the cleaning pump (7), the first electromagnetic valve (8) and the second electromagnetic valve (9).

3. The urea pump cleaning detection device of claim 1,

the main control module (2) is also provided with a signal input interface for inputting a nozzle driving signal on a nozzle driving circuit in the urea pump (13).

4. The urea pump cleaning detection device of claim 1,

the bus communication module (4) is a CAN communication module.

5. A urea pump cleaning detection system, characterized by comprising the urea pump cleaning detection device as claimed in any one of claims 1-4, further comprising a first water tank (11) and a second water tank (12);

one end of the first electromagnetic valve (8) is connected with a first water tank (11) through a pipeline; the third end of the tee joint (10) is connected with a liquid inlet of a urea pump (13) through a pipeline, and a liquid return port and a jet orifice of the urea pump (13) are respectively connected with a second water tank (12) through pipelines; the inlet of the cleaning pump (7) is connected with a second water tank (12) through a pipeline; the spray port 13 of the urea pump is provided with a nozzle.

6. The urea pump wash detection system of claim 5,

clear water is arranged in the first water tank (11), and circulating water is arranged in the second water tank (12).

7. The urea pump wash detection system of claim 6,

the urea pump cleaning detection system comprises the following cleaning detection process for the urea pump:

step S1, controlling the second electromagnetic valve (9) to be closed and the first electromagnetic valve (8) to be opened;

step S2, acquiring self-diagnosis information of the urea pump (13) when the urea pump (13) starts and absorbs water from the first water tank (11);

step S3, when the self-diagnosis information of the urea pump (13) comprises blockage fault information, controlling the first electromagnetic valve (8) to be closed, and controlling the second electromagnetic valve (9) to be opened, and starting the washing pump (7);

step S5, after the cleaning pump (7) is started to a cleaning cycle is finished, the second electromagnetic valve (9) is controlled to be closed again, the first electromagnetic valve (8) is opened, self-diagnosis information of the urea pump (13) is obtained, cleaning is finished when no blockage fault information exists in the self-diagnosis information, and steps S1-S3 are repeated if the blockage fault information exists; the next cleaning cycle is performed.

8. A urea pump cleaning detection method applied to the urea pump cleaning detection system according to claim 6, characterized by comprising the following steps:

step S1, controlling the second electromagnetic valve (9) to be closed and the first electromagnetic valve (8) to be opened;

step S2, acquiring self-diagnosis information of the urea pump (13) when the urea pump (13) starts and absorbs water from the first water tank (11);

step S3, when the self-diagnosis information of the urea pump (13) comprises blockage fault information, controlling the first electromagnetic valve (8) to be closed, and controlling the second electromagnetic valve (9) to be opened, and starting the washing pump (7);

step S5, after the cleaning pump (7) is started to a cleaning cycle is finished, the second electromagnetic valve (9) is controlled to be closed again, the first electromagnetic valve (8) is opened, self-diagnosis information of the urea pump (13) is obtained, cleaning is finished when no blockage fault information exists in the self-diagnosis information, and steps S1-S3 are repeated if the blockage fault information exists; the next cleaning cycle is performed.

9. The urea pump cleaning detection method according to claim 8,

and when the self-diagnosis information of the urea pump (13) comprises urea pump electrical fault information, displaying the urea pump electrical fault information and the related fault position on a touch display module (6).

10. The urea pump cleaning detection method of claim 8, further comprising:

and step S4, after the urea pump (13) is started, acquiring a nozzle driving signal on a nozzle driving circuit in the urea pump (13), judging whether the nozzle driving circuit has a fault or not according to the nozzle driving signal, and if the nozzle driving circuit has the fault, generating nozzle electrical fault information and displaying the information on the touch display module (6).

Technical Field

The invention relates to the technical field of SCR systems, in particular to a urea pump cleaning detection device and a cleaning detection method.

Background

The existing urea pump cleaning detection scheme mainly comprises a detection part and a cleaning part, fault detection is carried out on the urea pump firstly, fault reasons are analyzed according to detection results, and if the urea pump is blocked, the urea pump can be cleaned in a pressurizing mode, so that the blockage dredging effect is achieved, and the normal performance of the urea pump can be recovered.

When the existing scheme is used for cleaning and detecting the urea pump, the automation degree is low, cleaning equipment and detection equipment are needed, the operation is complex, and the efficiency is low.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a urea pump cleaning detection device, a urea pump cleaning detection system and a urea pump cleaning detection method, which are compact and reasonable in structure, simple and convenient to operate and capable of improving the cleaning efficiency of a urea pump. In order to achieve the technical purpose, the embodiment of the invention adopts the technical scheme that:

in a first aspect, an embodiment of the present invention provides a urea pump cleaning detection apparatus, including: the cleaning device comprises a main control module, a power supply module, a bus communication module, a driving output module, a touch display module, a cleaning pump, a first electromagnetic valve, a second electromagnetic valve and a tee joint;

the main control module is respectively connected with the power supply module, the bus communication module, the driving output module and the touch display module;

the main control module is used for acquiring self-diagnosis information of the urea pump and/or detecting corresponding faults according to signals acquired from the urea pump, and is used for controlling the driving output module;

the power supply module is used for providing power for the urea pump cleaning detection device;

the bus communication module is used for communicating with a self-diagnosis module in the urea pump;

the driving output module is used for driving the cleaning pump, the first electromagnetic valve and the second electromagnetic valve;

the touch display module is used for providing a human-computer interaction interface and displaying fault information of the urea pump;

one end of the first electromagnetic valve is used for being connected with the first water tank through a pipeline, and the other end of the first electromagnetic valve is connected with the first end of the tee joint through a pipeline;

the inlet of the cleaning pump is connected with the second water tank through a pipeline, and the outlet of the cleaning pump is connected with one end of the second electromagnetic valve through a pipeline;

the other end of the second electromagnetic valve is connected with the second end of the tee joint through a pipeline;

and the third end of the tee joint is used for being connected with a liquid inlet of the urea pump through a pipeline.

Further, the driving output module comprises at least three driving output circuits respectively used for driving the cleaning pump, the first electromagnetic valve and the second electromagnetic valve.

Furthermore, the main control module is also provided with a signal input interface for inputting a nozzle driving signal on a nozzle driving circuit in the urea pump.

Further, the bus communication module is a CAN communication module.

In a second aspect, an embodiment of the present invention provides a urea pump cleaning detection system, including the urea pump cleaning detection apparatus as described above, and further including a first water tank and a second water tank;

one end of the first electromagnetic valve is connected with the first water tank through a pipeline; the third end of the tee joint is connected with a liquid inlet of a urea pump through a pipeline, and a liquid return port and a jet orifice of the urea pump are respectively connected with a second water tank through pipelines; the inlet of the cleaning pump is connected with the second water tank through a pipeline; the injection port of the urea pump is provided with a nozzle.

Furthermore, clear water is arranged in the first water tank, and circulating water is arranged in the second water tank.

Further, the urea pump cleaning detection system comprises the following cleaning detection processes for the urea pump:

step S1, controlling the second electromagnetic valve to be closed and the first electromagnetic valve to be opened;

step S2, when the urea pump is started and absorbs water from the first water tank, self-diagnosis information of the urea pump is obtained;

step S3, when the self-diagnosis information of the urea pump comprises blockage fault information, controlling the first electromagnetic valve to be closed and the second electromagnetic valve to be opened, and starting the cleaning pump;

step S5, after the cleaning pump is started to a cleaning cycle, the second electromagnetic valve is controlled to be closed again, the first electromagnetic valve is controlled to be opened, self-diagnosis information of the urea pump is obtained, cleaning is finished when no blockage fault information exists in the self-diagnosis information, and the steps S1-S3 are repeated if blockage fault information exists; the next cleaning cycle is performed.

In a third aspect, an embodiment of the present invention provides a urea pump cleaning detection method, which is applied to the urea pump cleaning detection system described above, and includes the following steps:

step S1, controlling the second electromagnetic valve to be closed and the first electromagnetic valve to be opened;

step S2, when the urea pump is started and absorbs water from the first water tank, self-diagnosis information of the urea pump is obtained;

step S3, when the self-diagnosis information of the urea pump comprises blockage fault information, controlling the first electromagnetic valve to be closed and the second electromagnetic valve to be opened, and starting the cleaning pump;

step S5, after the cleaning pump is started to a cleaning cycle, the second electromagnetic valve is controlled to be closed again, the first electromagnetic valve is controlled to be opened, self-diagnosis information of the urea pump is obtained, cleaning is finished when no blockage fault information exists in the self-diagnosis information, and the steps S1-S3 are repeated if blockage fault information exists; the next cleaning cycle is performed.

Further, when the self-diagnosis information of the urea pump comprises urea pump electrical fault information, the urea pump electrical fault information and the related fault position are displayed on the touch display module.

Further, the urea pump cleaning detection method further includes:

and step S4, after the urea pump is started, acquiring a nozzle driving signal on a nozzle driving circuit in the urea pump, judging whether the nozzle driving circuit has a fault according to the nozzle driving signal, and if so, generating nozzle electrical fault information and displaying the information on the touch display module.

The technical scheme provided by the embodiment of the invention has the following beneficial effects:

1) the urea pump cleaning and detecting device integrates cleaning and detecting functions, so that the size of the device is greatly reduced, and the portability of carrying is improved.

2) The automatic cleaning device is high in automation degree and simple and convenient to operate, improves the cleaning efficiency of the urea pump, and can guarantee to obtain the best cleaning effect.

3) The system has expansibility, and detection of other components is realized through a bus communication module.

Drawings

FIG. 1 is an external schematic view of a urea pump cleaning detection device in an embodiment of the present invention.

Fig. 2 is an electrical block diagram of a urea pump cleaning detection device in an embodiment of the present invention.

FIG. 3 is a schematic view of a piping connection of a urea pump cleaning detection system according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, fig. 2 and fig. 3, in a first aspect, a urea pump cleaning detection device provided in an embodiment of the present invention includes a casing 1, a main control module 2, a power module 3, a bus communication module 4, a driving output module 5, a touch display module 6, a cleaning pump 7, a first electromagnetic valve 8, a second electromagnetic valve 9, and a tee joint 10;

the touch display module 6 is arranged on the front side of the machine shell 1, and the main control module 2, the power supply module 3, the bus communication module 4, the driving output module 5, the cleaning pump 7, the first electromagnetic valve 8, the second electromagnetic valve 9 and the tee joint 10 are arranged inside the machine shell 1;

the main control module 2 is respectively connected with the power supply module 3, the bus communication module 4, the driving output module 5 and the touch display module 6;

the main control module 2 is used for acquiring self-diagnosis information of the urea pump 13 and/or detecting corresponding faults according to signals acquired from the urea pump 13, and is used for controlling the driving output module 5; the main control module 2 can adopt a singlechip specifically;

the power module 3 is used for providing power for the urea pump cleaning detection device;

the bus communication module 4 is used for communicating with a self-diagnosis module in the urea pump 13; preferably, the main control module 2 is further provided with a signal input interface for inputting a nozzle driving signal on a nozzle driving circuit in the urea pump 13; preferably, the bus communication module 4 is a CAN communication module, and CAN communicate with a self-diagnosis module in the urea pump 13 through a CAN bus;

the driving output module 5 is used for driving the cleaning pump 7, the first electromagnetic valve 8 and the second electromagnetic valve 9; the driving output module 5 comprises at least three driving output circuits which are respectively used for driving the cleaning pump 7, the first electromagnetic valve 8 and the second electromagnetic valve 9;

the touch display module 6 is used for providing a human-computer interaction interface and displaying fault information of the urea pump 13;

one end of the first electromagnetic valve 8 is used for being connected with a first water tank 11 through a pipeline, and the other end of the first electromagnetic valve is connected with a first end of the tee joint 10 through a pipeline;

the inlet of the cleaning pump 7 is connected with a second water tank 12 through a pipeline, and the outlet of the cleaning pump 7 is connected with one end of a second electromagnetic valve 9 through a pipeline;

the other end of the second electromagnetic valve 9 is connected with the second end of the tee joint 10 through a pipeline;

the third end of the tee joint 10 is connected with a liquid inlet of a urea pump 13 through a pipeline;

in a second aspect, an embodiment of the present invention provides a urea pump cleaning detection system, including the urea pump cleaning detection apparatus as described above, further including a first water tank 11 and a second water tank 12;

one end of the first electromagnetic valve 8 is connected with a first water tank 11 through a pipeline; the third end of the tee joint 10 is connected with a liquid inlet of a urea pump 13 through a pipeline, and a liquid return port and a jet port of the urea pump 13 are respectively connected with a second water tank 12 through pipelines; the inlet of the cleaning pump 7 is connected with a second water tank 12 through a pipeline; a nozzle is arranged on a 13-jet orifice of the urea pump;

clear water is arranged in the first water tank 11, and circulating water is arranged in the second water tank 12; the circulating water in the second water tank 12 is also clear water in an initial state, and can be replaced by clear water after being cleaned for a period of time;

the third convenience is that the embodiment of the invention also provides a urea pump cleaning detection method, which comprises the following steps:

step S1, controlling the second electromagnetic valve 9 to close and the first electromagnetic valve 8 to open;

step S2, acquiring self-diagnostic information of the urea pump 13 when the urea pump 13 is started and absorbs water from the first water tank 11;

after the urea pump 13 is started, clean water CAN be sucked from the first water tank 11, in the water sucking process, the self-diagnosis module in the urea pump 13 CAN detect whether a pipeline from a liquid inlet to a liquid return port of the urea pump 13 is blocked or not and whether a pipeline from the liquid inlet to a spray port of the urea pump 13 is blocked or not through a pressure sensor arranged on a pipeline inside the urea pump, and if any one of the pipelines is blocked, the self-diagnosis module of the urea pump CAN generate blocking fault information and send the blocking fault information to the urea pump cleaning detection device through a CAN bus; the self-diagnosis module in the urea pump 13 CAN also detect a motor and each pressure sensor in the urea pump, if an electrical fault exists, the electrical fault information of the urea pump is generated and sent to the urea pump cleaning detection device through a CAN bus;

step S3, when the self-diagnosis information of the urea pump 13 comprises blockage fault information, controlling the first electromagnetic valve 8 to be closed and the second electromagnetic valve 9 to be opened, and starting the cleaning pump 7;

after the cleaning pump 7 is started, the cleaning pump 7 sucks circulating water from the second water tank 12 and pressurizes the circulating water, the circulating water enters the urea pump 13 through the second electromagnetic valve 9 and the tee joint 10, the urea pump 13 works, and the pressurized circulating water cleans pipelines (including pipelines from a liquid inlet to a liquid return port and pipelines from the liquid inlet to a spray port) and nozzles in the urea pump;

preferably, the blockage fault information of the urea pump 13 and the relevant blockage part are displayed on the touch display module 6;

optionally, when the self-diagnosis information of the urea pump 13 includes urea pump electrical fault information, displaying the urea pump electrical fault information and a relevant fault position on the touch display module 6;

step S4, optionally, after the urea pump 13 is started, acquiring a nozzle driving signal on a nozzle driving circuit in the urea pump 13, determining whether the nozzle driving circuit has a fault according to the nozzle driving signal, and if so, generating nozzle electrical fault information and displaying the nozzle electrical fault information on the touch display module 6;

under normal conditions, a nozzle driving signal on the nozzle driving circuit is a periodic waveform, such as a square wave, wherein the high level of the square wave is 24v, and the low level of the square wave is 0 v; when the nozzle driving signal on the nozzle driving circuit keeps high level continuously, the open-circuit fault of the nozzle driving circuit exists, and when the nozzle driving signal on the nozzle driving circuit keeps low level continuously, the short-circuit fault of the nozzle driving circuit exists;

step S5, after the cleaning pump 7 is started to a cleaning cycle is finished, the second electromagnetic valve 9 is controlled to be closed again, the first electromagnetic valve 8 is controlled to be opened, the self-diagnosis information of the urea pump 13 is obtained, the cleaning is finished when the blockage fault information does not exist in the self-diagnosis information, and the steps S1-S3 are repeated if the blockage fault information still exists; carrying out the next cleaning cycle;

through the process, all pipelines and nozzles in the urea pump can be recovered to a good working state, so that the overall performance and the working efficiency of the SCR system are improved;

this application will wash and detect two kinds of functions integration on same device, compact structure is reasonable, has reduced the equipment volume greatly, and easy operation is convenient, has improved the cleaning efficiency of urea pump, and can guarantee to obtain best cleaning performance.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.