Lubricating oil heating system of diesel-driven air compressor

Abstract

The utility model discloses a lubricating oil heating system of a diesel-driven air compressor, and belongs to the field of air compressors. The device comprises a heater, a diesel tank, an oil-gas separator and a diesel engine cylinder body, an oil storage cavity is formed in the diesel oil tank, and an oil inlet of the heater is communicated with the oil storage cavity of the diesel oil tank; the heater, the oil-gas separator and the diesel engine cylinder body are provided with cavities for water to flow, and the cavities of the heater, the oil-gas separator and the diesel engine cylinder body are communicated through water pipes. A lubricating oil heating mode different from an existing air compressor is adopted, the heating system is designed by combining the characteristics of the diesel-driven air compressor, and the problem that the diesel-driven air compressor cannot work normally in the low-temperature environment can be effectively solved.

Description

Technical Field

[0001] The utility model belongs to the field of air compressors, and more specifically, relates to a lubricating oil heating system for a diesel-driven air compressor. Background Technique

[0002] A diesel-driven air compressor is directly driven by a diesel engine to drive the rotating parts of the main unit, causing a change in the internal volume of the main unit. The diesel-driven air compressor has the advantage of being convenient for on-site movement and can effectively solve the problem of limited power in field construction. Diesel drive is not limited to the air compressor itself having a walking system, and it can also be placed on motor vehicles such as trucks in a skid-mounted form for easy movement. Therefore, due to its working nature, when the diesel-driven air compressor operates in remote areas in the wild, it is often inevitably in a low-temperature environment.

[0003] An oil-gas separator is an essential device for a diesel-driven mobile air compressor and is used to store lubricating oil. Lubricating oil is a medium in the compression process of the main unit of the air compressor, and it plays a key role in lubricating, rust-preventing, cooling, sealing, and noise-reducing of the compressor. However, when the diesel-driven air compressor is in a low-temperature environment in the wild, the viscosity of the lubricating oil increases and its fluidity decreases, which will increase the load on the driving machine when the air compressor starts, and at the same time form an excessive load on the transmission parts, affecting their service life. More seriously, it will cause the lubricating oil to not be quickly transported into the rotating parts (bearings, gears, screws, etc.) of the compressor during startup, resulting in compressor wear and affecting the performance and service life of the compressor.

[0004] Although there are low-viscosity lubricating oils that can easily start the unit at low temperatures, since the air compressor is in a gas compression state during normal operation and is in a high-temperature state (generally 70°C - 300°C), low-viscosity lubricating oils are not suitable for use in compressors. Low-viscosity lubricating oils participate in gas compression lubrication in the compressor body and will become thinner at high temperatures, resulting in defects such as weakened oil films and insufficient sealing, ultimately leading to high-temperature wear of the compressor and seriously affecting the performance and service life of the compressor. In addition, low-viscosity lubricating oils have a high price and a short oil change cycle for air compressors, and the cost of using low-viscosity lubricating oils is too high. Generally speaking, using low-temperature and low-viscosity lubricating oils in air compressors is a practice that gains little while losing much.

[0005] In response to this, there are currently some heating measures for lubricating oil, but they all have deficiencies. For example: obtaining auxiliary measures such as heating from the outside has a high cost and strong dependence; using electric heating tools to heat lubricating oil has great safety hazards and inconvenient power supply situations, etc.

[0006] As for the patent document with the Chinese patent application number: CN201911260318.2 and the publication date: March 17, 2020, it discloses an air compressor oil-gas separation cylinder, including a cylinder body. A mounting base is provided at the bottom of the cylinder body for mounting on the air compressor base. Heating coils are respectively embedded on the inner walls of the lower, middle and upper parts of the cylinder body. The heating coils are connected into an integrated heating structure through vertical heating plates, and the heating plates are also embedded on the inner wall of the cylinder body. Heating bumps are arranged at equal intervals on the inner wall of the heating coil, and the heating bumps extend into the cylinder body. The air compressor oil-gas separation cylinder can heat the lubricating oil therein.

[0007] Another example is the patent document with the Chinese patent application number: CN202221988163.1 and the publication date: November 25, 2022, which discloses an air compressor lubricating oil constant temperature system, including a workbench. Support legs are connected to the four corners of the bottom of the workbench. A receiving cavity is opened on the right side of the top of the workbench. A heating pipe is connected to the inner cavity side wall of the receiving cavity. A vertical frame is connected to the inner cavity bottom wall of the receiving cavity. A constant temperature cylinder is connected to the top of the vertical frame. A temperature sensor is arranged on the outer wall of the vertical frame. A cover is arranged above the constant temperature cylinder. An oil storage cavity is arranged inside the left part of the workbench. A plunger is installed at the left end of the oil storage cavity. A feeding component is connected to the left side of the top of the workbench.

[0008] In the above two air compressors, heating measures for lubricating oil are designed, but both heat the lubricating oil through electric heating equipment, which has relatively large safety hazards and the problem of inconvenient power supply in the wild environment. Summary of the Invention

[0009] 1. Problems to be Solved

[0010] Aiming at the problem that in a low-temperature environment, the lubricating oil temperature of the existing diesel-driven air compressor is too low to ensure the normal operation of the air compressor, the utility model provides a lubricating oil heating system for a diesel-driven air compressor, which adopts a lubricating oil heating method different from that of the existing air compressor and designs a heating system in combination with the characteristics of the diesel-driven air compressor, and can effectively solve the problem that the diesel-driven air compressor cannot operate normally in a low-temperature environment.

[0011] 2. Technical Solutions

[0012] To solve the above problems, the utility model adopts the following technical solutions.

[0013] A lubricating oil heating system for a diesel-driven air compressor includes a heater, a diesel fuel tank, an oil-gas separator and a diesel engine cylinder block. A storage cavity for oil is arranged in the diesel fuel tank, and the oil inlet of the heater is communicated with the storage cavity of the diesel fuel tank. The heater, the oil-gas separator and the diesel engine cylinder block have cavities for water to flow, and the cavities of the heater, the oil-gas separator and the diesel engine cylinder block are communicated through water pipes.

[0014] As a further improvement of the technical solution, the cavity for water supply flow in the heater is a water isolation sleeve arranged outside the heater.

[0015] As a further improvement of the technical solution, the cavity for water supply flow in the oil-gas separator is a spiral coil pipe arranged inside the oil-gas separator.

[0016] As a further improvement of the technical solution, the cavity for water supply flow in the diesel engine cylinder block is a water isolation sleeve arranged outside the diesel engine cylinder block.

[0017] As a further improvement of the technical solution, it further includes a water tank arranged on one side of the diesel engine cylinder block; the water tank is respectively connected to the cavity for water supply flow in the heater and the diesel engine cylinder block through water pipes.

[0018] As a further improvement of the technical solution, the cavity for water supply flow in the diesel engine cylinder block is connected to one end of an exhaust pipe, and the other end of the exhaust pipe is connected to the upper space inside the water tank.

[0019] As a further improvement of the technical solution, the oil-gas separator includes a cylinder body and a top cover. The cylinder body has a cavity for storing lubricating oil. An air inlet, an oil outlet and a fuel filling port are arranged on the side wall of the cylinder body. An oil drain port is arranged on the lower side of the cylinder body, and an air outlet is arranged on the top cover.

[0020] As a further improvement of the technical solution, a safety valve is arranged on the side wall of the cylinder body.

[0021] As a further improvement of the technical solution, a liquid level sight glass is installed on the side wall of the cylinder body.

[0022] As a further improvement of the technical solution, it further includes a circuit assembly for supplying power to the heater and the diesel engine.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0025] 1. In the lubricating oil heating system of the diesel-driven air compressor of the present utility model, low-temperature diesel is stored in the diesel fuel tank and atomized and burned through a diesel heater to heat the water arranged in the heater cavity. The heated water then flows to the oil-gas separator and the diesel engine cylinder block to achieve the effect of heating the lubricating oil in the oil-gas separator and the diesel engine cylinder block, making it easy for the air compressor to start. The exhaust gas generated by the combustion of the heater can be discharged through the original exhaust gas discharge port of the diesel-driven air compressor, avoiding the problems existing in the existing external heating or electric heating methods, and facilitating the use of the diesel-driven air compressor in the field under low-temperature environments;

[0026] The lubricating oil heating system of a diesel-driven air compressor of the present utility model can store water when the heating system is not working by setting a water tank, and ensure that water for heating is provided when the heating system is working, so as to ensure the circulating flow of water and the normal operation of the heating system;

[0027] The lubricating oil heating system of a diesel-driven air compressor of the present utility model can discharge the air in the cavity by setting an air removal pipe, so as to ensure the circulating flow of water;

[0028] The lubricating oil heating system of a diesel-driven air compressor of the present utility model can ensure the safety of the oil-gas separator by setting a safety valve, and can observe the situation of the lubricating oil by setting a sight glass, which is convenient for the staff to debug and repair the oil-gas separator. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of the heating system of the present utility model;

[0030] Figure 2 is a schematic structural diagram of the oil-gas separator of the present utility model;

[0031] In the figure: 1. Heater; 2. Diesel fuel tank; 3. Oil-gas separator; 31. Cylinder body; 32. Top cover; 33. Air inlet; 34. Oil outlet; 35. Oil filling port; 36. Oil drain port; 37. Air outlet; 38. Safety valve; 39. Sight glass; 4. Diesel engine cylinder block; 5. Spiral coil; 6. Water tank; 7. Air removal pipe; 8. Circuit components. Detailed Embodiment

[0032] The following describes the exemplary embodiments of the present utility model in detail. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to implement the present utility model, it should be understood that other embodiments can be achieved and various changes can be made to the present utility model without departing from the spirit and scope of the present utility model. The following more detailed description of the embodiments of the present utility model is not intended to limit the scope of the claimed present utility model, but is only for the purpose of illustration and does not limit the description of the features and characteristics of the present utility model, so as to propose the best way to implement the present utility model and be sufficient to enable those skilled in the art to implement the present utility model. Therefore, the scope of the present utility model is only defined by the appended claims.

[0033] Embodiment 1

[0034] A lubricating oil heating system of a diesel-driven air compressor is applicable to the situation where the lubricating oil viscosity increases and is not easy to flow at low temperatures, resulting in the abnormal operation of the air compressor. The following describes its specific structure and technical effects in detail.

[0035] As Figure 1As shown, the system is installed on the chassis of a diesel-driven air compressor, and includes a heater 1, a fuel tank 2, an oil-gas separator 3, a diesel engine block 4, a water tank 6, and a circuit assembly 8.

[0036] Among them, as Figure 2 shown, the oil-gas separator 3 includes a cylinder body 31 and a top cover 32. A cavity for storing lubricating oil is provided inside the cylinder body 31. An air inlet 33, an oil outlet 34, and a fuel filling port 35 are provided on the side wall of the cylinder body 31. An oil drain port 36 is provided on the lower side of the cylinder body 31. An air outlet 37 is provided on the top cover 32. The lubricating oil here mainly refers to the oil used to lubricate the rotating parts during the operation of the compressor and cool the compressed gas. In a low-temperature environment, the lubricating oil is prone to an increase in viscosity and difficulty in flowing, resulting in an excessive load on the diesel engine driving the compressor and difficult starting.

[0037] In addition, a safety valve 38 is provided on the side wall of the cylinder body 31 and a sight glass 39 is installed. The safety valve 38 can ensure the safety of the oil-gas separator, while the sight glass 39 can observe the condition of the lubricating oil, facilitating the debugging and maintenance of the oil-gas separator by the staff.

[0038] A fuel storage cavity for storing low-temperature diesel is provided inside the fuel tank 2. The fuel inlet of the heater 1 is connected to the fuel storage cavity of the fuel tank 2. The low-temperature diesel here mainly refers to diesel with a relatively high cost and a relatively low freezing point, such as -10# diesel, -20# diesel, -35# diesel, and -50# diesel, which is used to provide fuel for the heater 1.

[0039] The heater 1, the oil-gas separator 3, and the diesel engine block 4 have cavities for water flow. The cavities of the heater 1, the oil-gas separator 3, and the diesel engine block 4 are connected by water pipes. Specifically, the cavities for water flow in the heater 1 and the diesel engine block 4 are the water jackets, i.e., the water jacket interlayers, provided on the outside. The cavity for water flow in the oil-gas separator 3 is a spiral coil 5 provided inside the oil-gas separator 3. Part of the spiral coil 5 is placed inside the oil-gas separator 3 and below the lubricating oil level to heat up the lubricating oil.

[0040] The heater 1 can adopt an existing diesel heater, which includes a main motor, a combustion assistant fan, an atomizer and an oil pump. The main motor of the heater 1 drives the combustion assistant fan and the atomizer to rotate. The oil pump transports the low-temperature diesel oil sucked from the diesel fuel tank 2 to the atomizer through a pipeline. The atomizer atomizes the fuel through the action of centrifugal force and mixes it with the air sucked by the combustion assistant fan in the main combustion chamber, and is ignited by the glow plug. After fully burning in the afterburning chamber, it turns back and transfers heat to the water in the water jacket sandwich through the inner wall of the water jacket and the fins on it. The heated water flows through the water pipe to the spiral coil 5 and the water jacket of the diesel engine block 4, so as to raise the temperature of the lubricating oil and the diesel engine block. Through the circulation of the heated cooling water in the spiral coil 5 and the water jacket of the diesel engine block 4, the lubricating oil in the oil-gas separator 3 and the diesel engine block 4 are at an appropriate temperature, and the air compressor is easy to start. The exhaust gas burned by the heater 1 is discharged through the original exhaust port of the diesel-driven air compressor.

[0041] The water tank 6 is arranged on one side of the diesel engine block 4 and is connected to the water jacket of the heater 1 and the diesel engine block 4 through water pipes respectively. By arranging the water tank 6, water can be stored when the heating system is not working, and water for heating can be provided when the heating system is working, ensuring the circulating flow of water and the normal operation of the heating system.

[0042] At the same time, one end of the degassing pipe 7 is connected to the water jacket of the diesel engine block 4, and the other end of the degassing pipe 7 is connected to the upper space in the water tank 6. By arranging the degassing pipe 7, the excess air in the water jacket can be discharged, ensuring the circulating flow of water.

[0043] The circuit assembly 8 includes an ultra-low temperature storage battery. The ultra-low temperature storage battery is equipped with a heat preservation sleeve and is used to supply power to the heater 1 and the diesel engine. It can also work normally in a low-temperature environment. The heat preservation sleeve material adopts heat insulation materials such as soft porcelain heat preservation material, calcium silicate, aluminum silicate, phenolic plastic, aerogel or polyimide foam.

[0044] In summary, for the characteristics of the mobile diesel-driven air compressor, a lubricating oil heating system for a diesel-driven air compressor in this embodiment can still effectively operate even in a low-temperature environment by transforming the water pipeline and equipping with a low-temperature battery. At the same time, it only needs partially stored low-temperature diesel oil to achieve heating, avoiding the problems existing in the existing external heating or electric heating methods, facilitating the use of the diesel-driven air compressor in the wild low-temperature environment, having good economy, and greatly saving costs while maintaining the performance of the compressor.

Claims

1. A diesel-driven air compressor lubricating oil heating system, characterized in that: The invention comprises a heater (1), a diesel tank (2), an oil-gas separator (3) and a diesel engine cylinder (4); an oil storage chamber is provided in the diesel tank (2), and an oil inlet of the heater (1) is connected to the oil storage chamber of the diesel tank (2); the heater (1), the oil-gas separator (3) and the diesel engine cylinder (4) have cavities for water flow, and the cavities of the heater (1), the oil-gas separator (3) and the diesel engine cylinder (4) are connected via a water pipe.

2. A diesel-driven air compressor lubricating oil heating system according to claim 1, characterized in that: The cavity in the heater (1) through which water flows is a water-isolating jacket arranged on the outside of the heater (1).

3. The diesel-driven air compressor lubricating oil heating system according to claim 1 is characterized in that: The cavity in the oil-gas separator (3) for water flow is a spiral coil (5) arranged in the oil-gas separator (3).

4. The diesel-driven air compressor lubricating oil heating system according to claim 1 is characterized in that: The cavity in the diesel engine cylinder body (4) for water flow is a water-isolating jacket arranged outside the diesel engine cylinder body (4).

5. The diesel-driven air compressor lubricating oil heating system according to claim 1, characterized in that: It also includes a water tank (6) arranged on one side of the diesel engine cylinder body (4); the water tank (6) is connected to the heater (1) and the cavity in the diesel engine cylinder body (4) for water flow through water pipes.

6. A diesel-driven air compressor lubricating oil heating system according to claim 5, characterized in that: The cavity in the diesel engine cylinder body (4) through which water flows is connected to one end of a degassing pipe (7), and the other end of the degassing pipe (7) is connected to the upper space in the water tank (6).

7. The diesel-driven air compressor lubricating oil heating system according to claim 1, characterized in that: The oil-gas separator (3) comprises a cylinder (31) and a top cover (32); the cylinder (31) has a cavity for storing lubricating oil; a side wall of the cylinder (31) is provided with an air inlet (33), an oil outlet (34) and an oil filling port (35); an oil drain port (36) is provided on the lower side of the cylinder (31); and the top cover (32) is provided with an air outlet (37).

8. The diesel-driven air compressor lubricating oil heating system according to claim 7, characterized in that: A safety valve (38) is provided on the side wall of the cylinder (31).

9. A diesel-driven air compressor lubricating oil heating system according to claim 8, characterized in that: The side wall of the cylinder (31) is provided with a sight glass (39).

10. A diesel-driven air compressor lubricating oil heating system according to any one of claims 1 to 9, characterized in that: It also comprises a circuit assembly (8), wherein the circuit assembly (8) is used to supply power to the heater (1) and the diesel engine.

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