A diesel engine pump set integrated oil return cooling system

Abstract

The utility model relates to mechanical engineering technical field especially relates to a diesel engine pump group integrated oil return cooling system. Be applied to the pump house, the core includes the shared base, the oil tank, the control cabinet to install water pump and diesel engine on the shared base, and the key innovation lies in the additional oil return cooling pipeline. Oil return cooling pipeline entrance, export respectively link up with the water pump water outlet and inlet, inside is equipped with sealed oil return inner tube, diesel engine oil return mouth passes through first oil return pipe and connects oil return inner tube entrance, and oil return inner tube export extends to the oil tank through second oil return pipe, forms the cooling loop of diesel engine oil return. The system still contains multiple optimization design: oil return cooling pipeline is in series with the inner silk ball valve and the inner silk water flow indicator, wherein the inner silk ball valve can be arranged as electric control type, and both realize signal connection with the control cabinet, is convenient for monitoring and control, sets up independent oil tank compartment in the pump house to fix the oil tank, and the oil return cooling pipeline is also fixed on the shared base, improves the overall integration and installation stability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and in particular to an integrated oil return cooling system for a diesel engine pump set. Background Technology

[0002] In the fields of fire protection and petrochemicals, diesel engine pump sets are core equipment for emergency water supply and media transportation. Their stable operation depends on the compatibility of fuel supply and cooling systems, making the rational design of the fuel tank crucial. Currently, different industry standards have significantly different requirements for fuel tank volume: GB6245 "Fire Pumps" requires a configuration of 1.21V / kW to ensure 4 hours of continuous operation and reserve expansion and sedimentation capacity; 19S204-1 "Atlas" and SH / T3219-2022 "Design Code for Petrochemical Fire Pump Stations" are based on a fire duration of ≤3 hours and require fuel for both fire protection and cooling, with a configuration of 5.5V / kW; T / CECS718-2020 "Technical Specification for Diesel Engine Fire Pump Sets," although lowered to 2.75V / kW, still requires consideration of return oil cooling factors. With increasingly stringent standards, fuel tank capacity increases, posing multiple challenges. In terms of safety, diesel is a flammable liquid, and increased storage increases the risk of fire and explosion, placing higher demands on pump room fire prevention, ventilation, and explosion-proof facilities. The risks are further compounded in petrochemical and other scenarios. Economically, the increased fuel tank size drives up manufacturing costs, and the need to expand the scale of pump house construction also increases upfront construction costs. Routine maintenance such as leak detection and fuel monitoring also require increased investment. The key problem lies in the fact that traditional oil return cooling methods exacerbate the contradiction between oil tank capacity and cooling capacity. High-temperature oil returns directly to the oil tank, requiring a large amount of space for heat dissipation; existing cooling solutions are either complex in structure, costly, and prone to failure and downtime, or cannot utilize the residual pressure of the return oil, still requiring an enlarged oil tank. At the same time, traditional systems lack precise control and monitoring, making it difficult to adjust cooling efficiency as needed, which can easily affect unit performance or waste energy. Utility Model Content

[0003] To completely resolve the issues of increased safety risks and costs associated with larger fuel tanks in diesel engine pump sets, as well as the contradictions with traditional oil return cooling methods, this utility model proposes an integrated oil return cooling system for diesel engine pump sets. This system comprises a shared base, fuel tank, control cabinet, water pump, diesel engine, and oil return cooling piping. The specific technical solution is as follows: An integrated oil return cooling system for a diesel engine pump set includes a common base, an oil tank, and a control cabinet installed in a pump room. A water pump and a diesel engine are installed on the common base. The oil inlet of the diesel engine is connected to the oil tank through an oil inlet pipe. The system also includes an oil return cooling pipeline. The inlet end of the oil return cooling pipeline is connected to the outlet of the water pump, and the outlet end is connected to the inlet of the water pump. The oil return cooling pipeline is equipped with a sealed inner oil return pipe; The diesel engine is provided with an oil return port, which is connected to one end of the first oil return pipe. The other end of the first oil return pipe passes through the wall of the oil return cooling pipe and is connected to the inlet end of the oil return inner pipe. The outlet end of the inner oil return pipe is connected to one end of the second oil return pipe, and the other end of the second oil return pipe extends through the pipe wall of the oil return cooling pipeline to the outside and is connected to the oil tank.

[0004] Preferably, the oil return cooling pipeline is equipped with an internal thread ball valve and an internal thread water flow indicator connected in series.

[0005] Preferably, the internal thread ball valve is an electrically controlled ball valve, and the internal thread ball valve is connected to the control cabinet via signal connection.

[0006] Preferably, the inner filament water flow indicator is connected to the control cabinet via a signal connection.

[0007] Preferably, the pump room is equipped with an independent oil tank compartment, and an oil tank is fixedly installed in the oil tank compartment.

[0008] Preferably, the oil return cooling pipeline is fixedly installed on the common base.

[0009] The beneficial effects of this utility model are as follows: 1. The oil return cooling pipe of this utility model is directly connected to the inlet and outlet of the water pump to form a circulating water flow channel; at the same time, the inner oil return pipe is sealed and nested in the cooling pipe, so that the diesel engine oil return and circulating cooling water can achieve efficient heat exchange in a "shell-and-tube" manner. 2. The cooling system of this utility model directly relies on the circulating power of the water pump to realize the flow of cooling water, without the need for additional driving equipment such as motors and fans, which reduces energy consumption and system failure rate, and meets the industrial design requirements of energy saving and consumption reduction. 3. The oil return cooling pipeline of this utility model is fixedly installed on a common base, forming a unified installation unit with the water pump and diesel engine. This eliminates the need for separate planning of cooling pipeline installation space, reducing on-site construction procedures and improving installation efficiency. Simultaneously, the oil tank is integrated into the pump room through an independent compartment, achieving a centralized layout of the oil, water, and electrical systems, facilitating unified management and maintenance in the future. 4. The internal thread water flow indicator connected in series in the return oil cooling pipeline of this utility model can observe the cooling water flow status in real time, making it easy to detect abnormalities such as pipeline blockage and leakage in a timely manner; the internal thread ball valve adopts an electronic control design and is linked with the control cabinet signal, which can remotely or automatically adjust the cooling water flow rate, dynamically match the cooling demand according to the diesel engine operating load, and reduce manual intervention. 5. The return oil inner pipe of this utility model adopts a sealed structure design, which effectively avoids cross-contamination between diesel engine return oil and cooling water, and ensures the quality of lubricating oil and the cleanliness of the cooling system; the independent oil tank compartment can prevent the oil tank from being affected by vibration and temperature changes of other equipment in the pump room, while reducing the safety risks caused by fuel leakage, and complies with industrial safety standards.

[0010] 6. The internal water flow indicator, the electric ball valve and the control cabinet of this utility model are linked by signals, which can monitor the operating parameters of the cooling system in real time. When water flow interruption or abnormal oil temperature occurs, the control cabinet can issue an early warning signal in time, and even link the diesel engine start-stop protection to avoid equipment damage and improve the reliability and safety of system operation.

[0011] 7. This utility model integrates a common base and a sleeve-type heat exchange structure, so the cooling system does not need to occupy a large area of ​​pump room space, making it especially suitable for small and medium-sized pump rooms or industrial scenarios with limited space. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of an integrated oil return cooling system for a diesel engine pump set according to the present invention; Figure 2 This is a schematic diagram of the oil return cooling pipeline of an integrated oil return cooling system for a diesel engine pump set according to this utility model; In the diagram: 1. Fuel tank; 2. Water pump; 3. Diesel engine; 4. Oil inlet pipe; 5. Oil return cooling pipe; 51. Internal thread ball valve; 52. Internal thread water flow indicator; 6. Oil return inner pipe; 61. First oil return pipe; 62. Second oil return pipe. Detailed Implementation

[0013] An integrated oil return cooling system for a diesel engine pump set includes a shared base control cabinet located in a pump house. The pump house has a separate oil tank compartment, in which an oil tank 1 is fixedly installed. A water pump 2 and a diesel engine 3 are mounted on the shared base. The oil inlet of the diesel engine 3 is connected to the oil tank 1 via an oil inlet pipe 4. The system also includes an oil return cooling pipe 5; the inlet end of the oil return cooling pipe 5 is connected to the outlet of the water pump 2, and the outlet end is connected to the inlet of the water pump 2; a sealed inner oil return pipe 6 is installed inside the oil return cooling pipe 5; the oil return cooling pipe 5 is fixedly installed on the shared base.

[0014] The diesel engine 3 is equipped with an oil return port, which is connected to one end of the first oil return pipe 61. The other end of the first oil return pipe 61 passes through the pipe wall of the oil return cooling pipe 5 and is connected to the inlet end of the oil return inner pipe 6. The outlet end of the inner oil return pipe 6 is connected to one end of the second oil return pipe 62, and the other end of the second oil return pipe 62 extends through the pipe wall of the oil return cooling pipe 5 to the outside and is connected to the oil tank 1.

[0015] The return oil cooling pipeline is equipped with an internal thread ball valve 51 and an internal thread water flow indicator 52 connected in series. The internal thread ball valve 51 is an electrically controlled ball valve and is connected to the control cabinet for signal transmission. The internal thread water flow indicator 52 is also connected to the control cabinet for signal transmission.

Claims

1. A diesel engine pump set integrated oil return cooling system, comprising a common base, a control cabinet, and an oil tank (1) installed in a pump room, wherein a water pump (2) and a diesel engine (3) are installed on the common base, and the oil inlet of the diesel engine (3) is connected to the oil tank (1) through an oil inlet pipe (4), characterized in that, Including the return oil cooling pipeline (5); The inlet end of the oil return cooling pipe (5) is connected to the outlet of the water pump (2), and the outlet end is connected to the inlet of the water pump (2). The oil return cooling pipeline (5) is equipped with a sealed oil return inner pipe (6); The diesel engine (3) is provided with an oil return port. The oil return port of the diesel engine (3) is connected to one end of the first oil return pipe (61). The other end of the first oil return pipe (61) passes through the pipe wall of the oil return cooling pipe (5) and is connected to the inlet end of the oil return inner pipe (6). The outlet end of the inner oil return pipe (6) is connected to one end of the second oil return pipe (62), and the other end of the second oil return pipe (62) extends through the pipe wall of the oil return cooling pipe (5) to the outside and is connected to the oil tank (1).

2. The integrated oil return cooling system for a diesel engine pump set according to claim 1, characterized in that, The oil return cooling pipeline is equipped with an internal thread ball valve (51) and an internal thread water flow indicator (52) connected in series.

3. The integrated oil return cooling system for a diesel engine pump set according to claim 2, characterized in that, The internal thread ball valve (51) is an electrically controlled ball valve, and the internal thread ball valve (51) is connected to the control cabinet for signal connection.

4. The integrated oil return cooling system for a diesel engine pump set according to claim 2, characterized in that, The inner filament water flow indicator (52) is connected to the control cabinet signal.

5. The integrated oil return cooling system for a diesel engine pump set according to claim 1, characterized in that, The pump room is equipped with an independent oil tank compartment, and an oil tank (1) is fixedly installed in the oil tank compartment.

6. The integrated oil return cooling system for a diesel engine pump set according to claim 1, characterized in that, The oil return cooling pipe (5) is fixedly installed on the common base.

Images