Diesel generator set plus urea device

By designing an automatic urea adding device with a urea tank, inlet, solenoid valve, and PLC control system in the diesel generator set, the problem of engine torque limitation and shutdown caused by urea deficiency is solved, ensuring the stable operation and economic benefits of the generator set.

CN224515255UActive Publication Date: 2026-07-17CHANGZHOU SHUNFENG ELECTRIC POWER EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGZHOU SHUNFENG ELECTRIC POWER EQUIP CO LTD
Filing Date
2025-07-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When diesel generator sets are operated unattended for extended periods, urea deficiency can lead to engine torque limitation and shutdown, resulting in economic losses and maintenance risks.

Method used

A urea replenishment device for diesel generator sets was designed, including a urea tank, a feed inlet, a urea pipeline, a solenoid valve, a liquid level acquisition unit, and a PLC control system, to achieve automatic urea replenishment and prevent the engine protection mechanism from being triggered due to excessively low urea levels.

Benefits of technology

It enables automatic urea replenishment in unattended operation, avoiding engine torque limitation or shutdown, reducing the risk of equipment failure, and ensuring stable operation of the generator set.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224515255U_ABST
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Abstract

The utility model discloses a diesel generating set adds urea device belongs to diesel generator technical field. Mainly including urea tank, this urea tank sets up on diesel generating set, and urea tank is linked with exhaust pipe, simultaneously is provided with feed inlet in urea tank, and is installed with urea pipeline on the feed inlet upper end, simultaneously is provided with first pump body on urea pipeline, and is installed with solenoid valve on urea pipeline, is provided with liquid level acquisition part in urea tank, simultaneously electric connection has PLC control system on first pump body, solenoid valve and liquid level acquisition part. The diesel generating set adds urea device of the application through setting up automatic urea adding device, has reached the effect of can increase urea liquid according to need.
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Claims

1. A urea-adding device for a diesel generator set, the diesel generator set having an exhaust pipe for discharging its internal exhaust gases, characterized in that: The urea adding device includes: a urea tank (50), which is installed on the diesel generator set and is connected to the exhaust pipe to spray urea into the exhaust pipe to neutralize the exhaust gas; A feed inlet (52) is provided on the urea tank (50) for introducing urea into the urea tank (50); A urea pipeline (510) is installed at the upper end of the feed inlet (52). A first pump body is provided on the urea pipeline (510). The first pump body is adapted to introduce urea into the urea tank (50) through the urea pipeline (510). A solenoid valve (511) is installed on the urea line (510); A liquid level acquisition unit is installed in the urea tank (50) to acquire the liquid level height of urea; The PLC control system is electrically connected to the first pump body, the solenoid valve (511), and the liquid level acquisition unit.

2. The diesel generator set plus urea device according to claim 1, characterized by: The solenoid valve (511) is made of stainless steel.

3. The diesel generator set plus urea device according to claim 1, characterized by: The urea tank (50) is also provided with an exhaust port (54) on one side of its top.

4. The diesel generator set plus urea device according to claim 1, characterized by: The urea tank (50) is fixedly provided with a discharge pipe (53) at the bottom, and a filter assembly (57) is provided at the lower end of the discharge pipe (53). The filter assembly (57) includes: A cylindrical body (570) is installed at the lower end of the discharge pipe (53); A filter block (573) is installed inside the cylinder (570). The size of the filter block (573) matches the inner wall of the cylinder (570). The filter block (573) divides the inside of the cylinder (570) into two independent chambers, specifically a filter chamber (576) and a filtration chamber (575). The filter chamber (576) is connected to the discharge pipe (53); Interface (572) is installed on the outside of the cylinder (570) and is connected to the filter chamber (575).

5. The diesel generator set plus urea device according to claim 4, characterized by: The bottom of the cylinder (570) is provided with a cover (574) by threads, and a connecting rod (571) is provided on the cover (574). The other end of the connecting rod (571) is fixedly connected to the filter block (573).

6. The diesel generator set plus urea device according to claim 4, characterized by: A material conveying pipe (55) is fixedly installed at the interface (572), and a second pump body (56) is fixedly installed between the material conveying pipe (55) and the interface (572). The exhaust pipe (2) is provided with a pipe (58) inside, and the output end of the pipe (58) extends to the outside of the exhaust pipe (2) and connects with the output end of the material conveying pipe (55).

7. The diesel generator set plus urea device according to claim 6, characterized by: The nozzle (59) is installed at the end of the pipe (58), and the nozzle (59) is configured to flow against the airflow.