An oil pump oil protection device for a vehicle-mounted generator set

Abstract

The utility model discloses a kind of oil pump oil protection devices of vehicle-mounted generator set, it is related to a kind of diesel generator automatic oiling technical field, including main controller and battery are connected by positive and negative electrode power line, main controller and the internal sensor of engine set ontology oil tank are controlled by single control circuit, main controller and oiling oil pump are connected by positive and negative electrode power line control, fuel flows from auxiliary oil tank to the inner chamber of ontology oil tank through oil outlet pipeline.By setting time delay relay, buffer time is reserved for the oil way filling stage of system start initial stage and the short-term air intake situation occurred in running process;Its protection mechanism is set to only when system continues oilless state exceeds preset length of time, protection shutdown action will be executed, avoid the false shutdown problem caused by instantaneous working condition fluctuation, improve the stability of system operation.

Description

Technical Field

[0001] This utility model relates to the field of oil pump oil shortage protection technology, specifically to an oil pump protection device for an automatic refueling system of a vehicle-mounted diesel generator set. Background Technology

[0002] Vehicle-mounted diesel generator sets are usually equipped with an automatic fuel replenishment system. When the fuel level in the main fuel tank is lower than a set threshold, fuel is replenished from an external auxiliary fuel tank to the main fuel tank. Existing systems mostly use a main controller to receive the fuel level sensor signal in the main fuel tank and control the start and stop of the fuel replenishment pump accordingly.

[0003] At present, the controller and oil level sensor can only monitor the status of the main oil tank, but cannot sense the operation of the oil replenishment pipeline and the oil pump itself. When the external auxiliary oil tank is depleted or the oil inlet pipeline is severely blocked, the oil replenishment pump will be in a state of continuous idling. Continuous idling may cause rapid wear and overheating of internal components, which may burn out the motor, causing equipment damage and safety hazards. It is not convenient to protect the generator set and the automatic oil replenishment system. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an oil-free protection device for the oil pump of a vehicle-mounted generator set, so as to solve the technical problem that when the oil tank of the oil replenishment pipeline and the oil pump itself runs out of oil, the oil pump will continue to run dry in the oil replenishment state. The oil pump running dry will cause the internal components to wear rapidly and overheat, which will burn out the motor, causing equipment damage and safety hazards.

[0005] To achieve the above objectives, this utility model employs the following technical solution: An oil pump oil shortage protection device for vehicle-mounted generator sets includes a storage battery, which is installed inside the generator set. The main controller is located on the top surface of the battery. The main body oil tank is located at the bottom of the battery, and an oil inlet is provided on the left side of the top surface of the main body oil tank. The auxiliary oil tank is located on the right side of the main oil tank. An oil outlet pipe is fixedly welded to the bottom left side of the auxiliary oil tank. The other end of the oil outlet pipe is movably connected to the replenishing oil pump. A transparent tube is movably connected to the other end of the replenishing oil pump. The other end of the transparent tube is fixedly welded to the oil inlet of the main oil tank.

[0006] The main controller is connected to the battery via positive and negative power lines. The main controller is controlled by the internal sensors of the engine unit's fuel tank via a single-phase control circuit. The main controller is also connected to the make-up fuel pump via positive and negative power lines. The fuel enters the internal transparent tube of the make-up fuel pump from the auxiliary fuel tank through the fuel outlet pipe and then enters the inner cavity of the main fuel tank from the inside of the make-up fuel pump.

[0007] As a preferred technical solution of this utility model, a time delay relay is located at the upper left of the oil replenishment pump; The time delay relay is connected to the main controller via positive and negative power lines, and the preset delay time of the time delay relay is 15 to 30 seconds.

[0008] As a preferred technical solution of this utility model, a photoelectric liquid level switch is located on the left side of the oil replenishment pump; The positive terminal of the photoelectric level switch is connected in series with a time delay relay through the main controller, and the negative terminal of the photoelectric level switch is connected to the negative terminal of the battery through a power line. The photoelectric level switch is a through-beam photoelectric switch.

[0009] As a preferred technical solution of this utility model, the main body oil tank has an oil inlet hole on the left side of the top surface of the main body oil tank; A transparent tube is fixedly welded to one end of the oil inlet hole; The other end of the transparent tube is movably connected to the oil replenishment pump.

[0010] As a preferred technical solution of this utility model, a normally closed contact is provided on the right side of the time delay relay; The negative terminal of the normally closed contact is connected to the negative terminal of the battery via a power line and is connected in series with the power line circuit of the oil replenishment pump.

[0011] As a preferred technical solution of this utility model, a transparent tube is provided, wherein the transparent tube is made of oil-resistant and heat-resistant engineering transparent plastic.

[0012] This invention provides a buffer time for the oil filling stage during system startup and for brief air intake during operation by setting a time-delay relay. Its protection mechanism is set to only execute the protection shutdown action when the system is in a state of no oil for more than a preset time, thus avoiding the problem of accidental shutdown caused by instantaneous operating condition fluctuations and improving the stability of system operation.

[0013] By using a photoelectric liquid level switch detection device, the actual oil discharge status at the oil outlet is directly captured, rather than relying on the oil tank level signal to indirectly determine the oil replenishment status. This fundamentally solves the problems of signal misjudgment and response delay that are prone to occur in traditional detectors. Furthermore, the photoelectric liquid level switch has the characteristic of extremely fast response, which can instantly and accurately identify whether there is oil at the oil outlet, greatly improving the real-time performance and accuracy of the oil replenishment system status detection and ensuring the stability of the oil replenishment system.

[0014] The transparent tube, made of oil-resistant and heat-resistant engineering transparent material, has oil-resistant chemical stability, heat-resistant temperature adaptability, and transparent visual observation. It allows for a direct view of the oil circuit operation status and abnormalities inside the pipeline, facilitating maintenance and monitoring.

[0015] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] Figure 1 This utility model relates to an oil-free protection device for the oil pump of a vehicle-mounted generator set. Figure 1 ; In the diagram: 1. Main oil tank; 2. Auxiliary oil tank; 3. Oil replenishment pump; 4. Oil outlet pipeline; 5. Photoelectric liquid level switch; 6. Time delay relay; 7. Main controller; 8. Sensor; 9. Normally closed contact; 10. Battery; 11. Transparent tube. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable. Example

[0022] Please see Figure 1 The present invention provides a technical solution: an oil-free protection device for an oil pump of a vehicle-mounted generator set, comprising a battery 10. Battery 10 is installed inside the generator set; Main controller 7 is located on the top surface of battery 10; The main body oil tank 1 is located at the bottom of the storage battery 10; Auxiliary oil tank 2 is located on the right side of main oil tank 1; an oil outlet pipe 4 is fixedly welded to the bottom left side of auxiliary oil tank 2. Specifically, in this embodiment, the main controller 7 is connected to the battery 10 via positive and negative power lines, the main controller 7 is controlled by the internal sensor 8 of the engine unit fuel tank 1 via a single-phase control circuit, the main controller 7 is connected to the fuel pump 3 via positive and negative power lines, and fuel flows from the auxiliary fuel tank 2 through the fuel outlet pipe 4 to the inner cavity of the main fuel tank 1.

[0023] Delay relay 6 is located to the upper left of replenishment pump 3; Specifically, in this embodiment, the time delay relay 6 is connected to the main controller 7 via positive and negative power lines, and the time delay relay 6 is controlled by a preset delay time.

[0024] Photoelectric liquid level switch 5, which is located to the left of oil replenishment pump 3; Specifically, in this embodiment, the positive terminal of the photoelectric liquid level switch 5 is connected in series with the time delay relay 6 through the main controller 7, and the negative terminal of the photoelectric liquid level switch 5 is connected to the negative terminal of the storage battery 10 through a power line for control. Furthermore, the photoelectric liquid level switch 5 is a through-beam photoelectric switch.

[0025] The main body oil tank 1 has an oil inlet hole on the left side of the top surface of the main body oil tank 1; A transparent tube 11 is fixedly welded to one end of the oil inlet hole; Specifically, in this embodiment, the other end of the transparent tube 11 is movably connected to the fuel replenishment pump 3. Fuel flows from the auxiliary fuel tank 2 through the fuel outlet line 4 via the fuel replenishment pump 3, then enters the transparent tube 11, and subsequently enters the inner cavity of the main fuel tank 1.

[0026] Normally closed contact 9 is located on the right side of time delay relay 6; Specifically, in this embodiment, the negative terminal of the normally closed contact 9 is connected to the negative terminal of the battery 10 via a power line and is connected in series with the power line circuit of the oil replenishment pump 3.

[0027] The main body oil tank 1 has an oil inlet hole on the left side of the top surface of the main body oil tank 1; A transparent tube 11 is fixedly welded to one end of the oil inlet hole; Specifically, in this embodiment, the transparent tube 11 is made of oil-resistant and heat-resistant engineering transparent plastic, which has oil-resistant chemical stability, heat-resistant temperature adaptability, and transparency for visual observation. It allows for a direct view of the oil circuit operation status and abnormalities inside the pipeline, facilitating maintenance and monitoring.

[0028] The working principle is as follows: When the car needs refueling, the main controller sends a start signal, energizing the refueling pump 3. Fuel is pumped out from the auxiliary fuel tank 2 and flows through the transparent tube 11. At this time, the photoelectric level switch 5 detects the fuel and its output contact remains open. The time-delay relay 6 is not energized, and its normally closed contact 11 remains closed. The refueling pump 3 continues to operate normally, allowing fuel to enter the inner cavity of the main fuel tank 1 from the auxiliary fuel tank 2. During the refueling process, if the fuel in the auxiliary fuel tank 2 is depleted, the refueling pump 3 begins to extract air. When air occupies the transparent tube 11, the photoelectric level switch... 5. Immediately detect the status change, close its output contact, energize the time delay relay 6 and start timing. If the operator adds fuel during this period, the fuel flow is restored, the photoelectric switch 5 is reset and disconnected, the time delay relay 6 is de-energized, the timer is reset, and the system recovers. If there is still no fuel in the transparent tube section after the timing ends, it is determined to be a no-fuel fault. The time delay relay 6 runs, its normally closed contact 9 opens, and the DC power supply to the fuel replenishment pump 3 is cut off. At this time, even if the start signal of the main controller 7 is still present, the fuel replenishment pump cannot run, thus achieving protection.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A vehicle-mounted generator set oil pump oil shortage protection device, comprising a storage battery (10), characterized in that: Storage battery (10), installed inside the generator set; The main controller (7) is located on the top surface of the battery (10); The main body oil tank (1) is located at the bottom of the storage battery (10); Auxiliary oil tank (2) is located on the right side of the main oil tank (1); an oil outlet pipe (4) is fixedly welded to the bottom left side of the auxiliary oil tank (2). Among them, the main controller (7) is connected to the battery (10) through positive and negative power lines, the main controller (7) is controlled by the internal sensor (8) of the engine body oil tank (1) through a single-phase control circuit, the main controller (7) is connected to the fuel pump (3) through positive and negative power lines, and the fuel flows from the auxiliary oil tank (2) through the oil outlet pipe (4) to the inner cavity of the main body oil tank (1).

2. The oil-free protection device for an on-board generator set oil pump according to claim 1, characterized in that, include: The time delay relay (6) is located to the upper left of the replenishment oil pump (3); The time delay relay (6) is connected to the main controller (7) via positive and negative power lines. The preset delay time of the time delay relay (6) is 15 to 30 seconds.

3. The oil-free protection device for an on-board generator set oil pump according to claim 1, characterized in that, include: Photoelectric liquid level switch (5) is located to the left of the oil replenishment pump (3); Among them, the positive terminal of the photoelectric liquid level switch (5) is connected in series with the time delay relay (6) through the main controller (7), and the negative terminal of the photoelectric liquid level switch (5) is connected to the negative terminal of the battery (10) through the power line. The photoelectric liquid level switch (5) is a through-beam photoelectric switch.

4. The oil-free protection device for an on-board generator set oil pump according to claim 1, characterized in that, include: The main body oil tank (1) has an oil inlet hole on the left side of the top surface of the main body oil tank (1); A transparent tube (11) is fixedly welded to one end of the oil inlet hole; The other end of the transparent tube (11) is movably connected to the oil replenishment pump (3).

5. The oil-free protection device for an on-board generator set oil pump according to claim 1, characterized in that, include: Normally closed contact (9) is located on the right side of the time delay relay (6); The negative terminal of the normally closed contact (9) is connected to the negative terminal of the battery (10) via a power line and is connected in series with the power line circuit of the oil replenishment pump (3).

6. The oil-free protection device for an on-board generator set oil pump according to claim 4, characterized in that, include: Transparent tube (11), wherein the transparent tube (11) is made of oil-resistant and heat-resistant engineering plastic.

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