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CN-121988090-A - Washing water filtering device and filtering method of EGR (exhaust gas Recirculation) system cooler

CN121988090ACN 121988090 ACN121988090 ACN 121988090ACN-121988090-A

Abstract

The invention discloses a washing water filtering device and a filtering method of an EGR (exhaust gas Recirculation) system cooler, and relates to the technical field of diesel engines. According to the washing water filtering device of the EGR system cooler, provided by the invention, through the arrangement of the first three-way valve and the second three-way valve, washing water provided by a washing water source can flow from the inlet of the first three-way valve to the first outlet and the second outlet of the first three-way valve, so that the washing water can flow through the first filter and the second filter for a cleaning mechanism, and when the first filter or the second filter is blocked, the first three-way valve can be controlled to enable the inlet of the first three-way valve to be communicated with the second outlet or the first outlet of the first three-way valve, and therefore, the blocked filter is disconnected, and the unblocked filter is only ensured to continuously work. According to the filtering method provided by the invention, the unblocked filter is ensured to work continuously by avoiding the blocked filter, so that the filtering reliability and the filtering efficiency are improved.

Inventors

  • SHEN HAOSHUAI
  • ZHANG XIN
  • WU HAO

Assignees

  • 上海中船三井造船柴油机有限公司

Dates

Publication Date
20260508
Application Date
20260327

Claims (10)

  1. 1. The utility model provides a washing water filter equipment of EGR system cooler for filter belt cleaning device's washing water, belt cleaning device includes wash water source and wiper mechanism, wiper mechanism is used for spraying the washing to EGR system cooler, a serial communication port, washing water filter equipment includes washing water circulation inlet tube (1), first three-way valve (2), first filter (3) and second filter (4), the import of washing water circulation inlet tube (1) is used for with wash water source intercommunication, the export of washing water circulation inlet tube (1) with the import intercommunication of first three-way valve (2), the first export of first three-way valve (2) with the import intercommunication of first filter (3), the second export of first three-way valve (2) with the import intercommunication of second filter (4), washing water filter equipment still includes washing water circulation outlet pipe (7) and second three-way valve (5), the export of first filter (3) with the first import intercommunication of second three-way valve (5), the export of second filter (4) with the export of second three-way valve (7) is used for washing water circulation outlet pipe (5) the import intercommunication.
  2. 2. The washing water filtering device of an EGR system cooler according to claim 1, characterized in that the washing water filtering device further comprises a linkage mechanism (6), the valve handle of the first three-way valve (2) and the valve handle of the second three-way valve (5) are both in transmission connection with the linkage mechanism (6), and the linkage mechanism (6) can drive the valve handle of the first three-way valve (2) and the valve handle of the second three-way valve (5) to synchronously rotate.
  3. 3. The EGR system cooler's wash water filtration device according to claim 1, characterized in that the inlet of the first filter (3) and the outlet of the first filter (3) are both provided with flow sensors, and the inlet of the second filter (4) and the outlet of the second filter (4) are both provided with flow sensors.
  4. 4. The EGR system cooler's wash water filter device according to claim 3, characterized in that the wash water filter device further comprises a central processor and an indicator light, wherein the indicator light, the flow sensor provided at the inlet of the first filter (3), the flow sensor provided at the outlet of the first filter (3), the flow sensor provided at the inlet of the second filter (4) and the flow sensor provided at the outlet of the second filter (4) are all electrically connected with the central processor.
  5. 5. The washing water filtering device of an EGR system cooler according to claim 4, characterized in that the washing water filtering device further comprises a linkage mechanism (6), the valve handle of the first three-way valve (2) and the valve handle of the second three-way valve (5) are both in transmission connection with the linkage mechanism (6), the linkage mechanism (6) can drive the valve handle of the first three-way valve (2) and the valve handle of the second three-way valve (5) to act synchronously, and the linkage mechanism (6) is electrically connected with the central processor.
  6. 6. A filtering method, characterized by using the washing water filtering device of the EGR system cooler according to any one of claims 1 to 5, comprising the steps of: S1, enabling an inlet of the first three-way valve (2) to be communicated with a first outlet and a second outlet of the first three-way valve (2), enabling an outlet of the second three-way valve (5) to be communicated with a first inlet and a second inlet of the second three-way valve (5), and starting the washing water filtering device; s2, detecting whether the first filter (3) and the second filter (4) are blocked or not in real time; S3, if only the first filter (3) is blocked, switching the first three-way valve (2) to the state that the inlet of the first three-way valve (2) is communicated with only the second outlet of the first three-way valve (2), switching the second three-way valve (5) to the state that the outlet of the second three-way valve (5) is communicated with only the second inlet of the second three-way valve (5), and dismantling and repairing the first filter (3); If only the second filter (4) is blocked, switching the first three-way valve (2) to the state that the inlet of the first three-way valve (2) is communicated with only the first outlet of the first three-way valve (2), switching the second three-way valve (5) to the state that the outlet of the second three-way valve (5) is communicated with only the first inlet of the second three-way valve (5), and overhauling the second filter (4); If both the first filter (3) and the second filter (4) are blocked, the washing water filtering device stops running, and after the first filter (3) and the second filter (4) are overhauled and the first filter (3) and the second filter (4) are reinstalled, the washing water filtering device is started and returns to the step S2.
  7. 7. The filtering method according to claim 6, characterized in that detecting in real time whether the first filter (3) and the second filter (4) are clogged comprises in particular: The central processing unit acquires the flow sensor at the inlet of the first filter (3) and the flow sensor value at the outlet of the first filter (3) in real time, and judges that the first filter (3) is blocked if the difference value between the flow sensor at the inlet of the first filter (3) and the flow sensor value at the outlet of the first filter (3) is larger than a preset value; And the central processing unit acquires the flow sensor at the inlet of the second filter (4) and the flow sensor value at the outlet of the second filter (4) in real time, and judges that the second filter (4) is blocked if the difference value between the flow sensor at the inlet of the second filter (4) and the flow sensor value at the outlet of the second filter (4) is larger than a preset value.
  8. 8. The filtering method according to claim 7, wherein after determining that the first filter (3) is clogged and/or determining that the second filter (4) is clogged, the central processing unit controls the indication lamp to be turned on.
  9. 9. The filtration method according to claim 6, characterized in that the overhauling of the first filter (3) comprises in particular the cleaning or replacement of the filter cartridge of the first filter (3) and/or the overhauling of the second filter (4) comprises in particular the cleaning or replacement of the filter cartridge of the second filter (4).
  10. 10. The filtering method according to claim 6, wherein switching the first three-way valve (2) to the first three-way valve (2) has an inlet communicated only with the second outlet of the first three-way valve (2), switching the second three-way valve (5) to the second three-way valve (5) has an outlet communicated only with the second inlet of the second three-way valve (5), specifically comprises a central processing unit controlling a linkage mechanism (6) to act, wherein the linkage mechanism (6) drives a valve handle of the first three-way valve (2) and a valve handle of the second three-way valve (5) to rotate, so that the inlet of the first three-way valve (2) is communicated only with the second outlet of the first three-way valve (2), and the outlet of the second three-way valve (5) is communicated only with the second inlet of the second three-way valve (5); And/or switching the first three-way valve (2) to the first three-way valve (2) is only communicated with the first outlet of the first three-way valve (2), switching the second three-way valve (5) to the second three-way valve (5) is only communicated with the first inlet of the second three-way valve (5), wherein the CPU controls the linkage mechanism (6) to act, and the linkage mechanism (6) drives the valve handle of the first three-way valve (2) and the valve handle of the second three-way valve (5) to rotate, so that the inlet of the first three-way valve (2) is only communicated with the first outlet of the first three-way valve (2), and the outlet of the second three-way valve (5) is only communicated with the first inlet of the second three-way valve (5).

Description

Washing water filtering device and filtering method of EGR (exhaust gas Recirculation) system cooler Technical Field The invention relates to the technical field of diesel engines, in particular to a washing water filtering device and a filtering method of an EGR (exhaust gas Recirculation) system cooler. Background An EGR (Exhaust Gas recirculation) system refers to returning a portion of the Exhaust Gas discharged from the engine to the intake manifold and Re-entering the cylinders with fresh mixture. Since the exhaust gas contains a large amount of polyatomic gas such as carbon dioxide, the gas such as carbon dioxide cannot be combusted, but absorbs a large amount of heat due to the high specific heat capacity, the maximum combustion temperature of the mixed gas in the cylinder is reduced, and the generation amount of nitrogen oxides is reduced. At present, as the emission requirements are continuously improved, the emission of nitrogen oxides on EGR (exhaust gas Recirculation) on a marine low-speed diesel engine can be effectively reduced. However, an EGR system is configured, and besides a conventional air cooler of a diesel engine, a set of air cooler of the EGR system is correspondingly added. The air cooler of the EGR system needs to be sprayed and cleaned by washing water in the operation process, so that the temperature of the air cooler is reduced, surface impurities are removed, and the washing water is recycled in the air cooler, so that the washing water is easy to be polluted in the washing process, and the cleaning efficiency is reduced. The prior art generally filters the wash water through a filter to remove impurities from the wash water, however, once the filter is clogged, the EGR system will not work properly. Therefore, a solution is needed to solve this problem. Disclosure of Invention A first object of the present invention is to provide a washing water filtering device for an EGR system cooler, which is used to solve the problems of low filtering efficiency, convenience in disassembly and reliability in use of the existing filtering device. The second object of the present invention is to provide a filtering method for improving the convenience of dismantling and repairing the washing water, the filtering efficiency and the filtering reliability. To achieve the purpose, the invention adopts the following technical scheme: The utility model provides a washing water filter equipment of EGR system cooler for filter belt cleaning device's washing water, belt cleaning device includes washing water source and wiper mechanism, wiper mechanism is used for spraying the washing to EGR system cooler, washing water filter equipment includes washing water circulation inlet tube, first three-way valve, first filter and second filter, the import of washing water circulation inlet tube is used for with the washing water source intercommunication, the export of washing water circulation inlet tube with the import intercommunication of first three-way valve, the first export of first three-way valve with the import intercommunication of first filter, the second export of first three-way valve with the import intercommunication of second filter, washing water filter equipment still includes washing water circulation outlet pipe and second three-way valve, the export of first filter with the first import intercommunication of second three-way valve, the export of second three-way valve with the import intercommunication of washing water circulation outlet pipe, the export of washing water circulation outlet pipe is used for with the wiper mechanism communicates. In some embodiments, the washing water filtering device further comprises a linkage mechanism, wherein the valve handle of the first three-way valve and the valve handle of the second three-way valve are in transmission connection with the linkage mechanism, and the linkage mechanism can drive the valve handle of the first three-way valve and the valve handle of the second three-way valve to synchronously rotate. In some embodiments, the inlet of the first filter and the outlet of the first filter are each provided with a flow sensor, and the inlet of the second filter and the outlet of the second filter are each provided with a flow sensor. In some embodiments, the washing water filtering device further comprises a central processing unit and an indicator light, wherein the indicator light, the flow sensor arranged at the inlet of the first filter, the flow sensor arranged at the outlet of the first filter, the flow sensor arranged at the inlet of the second filter and the flow sensor arranged at the outlet of the second filter are electrically connected with the central processing unit. In some embodiments, the washing water filtering device further comprises a linkage mechanism, wherein the valve handle of the first three-way valve and the valve handle of the second three-way valve are in transmission connection with the linkage mechanism,