A biogas oil injection screw compressor non-stop oiling device

Abstract

The utility model discloses a kind of biogas oil injection screw compressor non-stop oiling device, belong to screw compressor technical field, it includes: oiling pipe, oiling tank, first ball valve, second ball valve, first needle valve and second needle valve;The oiling pipe one end is communicated with oil-gas separation oil storage drum, the bottom of the first ball valve is provided with non-stop oiling port, the other end of the oiling pipe is communicated with non-stop oiling port, the top of the first ball valve is communicated with oiling tank, vertical pipe is communicated between the second ball valve and oiling tank, the first needle valve and second needle valve mutually close one end are each communicated with horizontal pipe, the other end of the horizontal pipe is communicated with vertical pipe, the top of second ball valve is provided with upper flange.The utility model can directly complete the supplement of lubricating oil in the process of compressor operation, to completely avoid the production interruption caused by non-stop oiling.

Description

Technical Field

[0001] This utility model relates to the field of screw compressor technology, and in particular to a non-stop refueling device for a biogas oil-injected screw compressor. Background Technology

[0002] During operation, although most of the lubricating oil in a process oil-injected screw compressor settles to the bottom of the oil-gas separator after separation, some oil mist is still carried away by the process gas. As the operating time increases, the liquid level in the oil-gas separator will continue to decrease. To ensure the normal operation of the unit, a certain amount of lubricating oil needs to be added to the oil-gas separator. Generally, the amount of lubricating oil added is not large, but the pressurized system can only be filled after the unit is shut down.

[0003] However, once a process screw compressor starts running, it cannot be stopped at will. Stopping it not only affects the production and operation of the entire process, but also requires the recovery or centralized discharge of process gases in the oil-gas separator and even the entire system when refueling. At the same time, air will be mixed into the system, and the air needs to be replaced after refueling, which is time-consuming and labor-intensive. Therefore, we propose a biogas oil-injected screw compressor non-stop refueling device to solve this problem. Utility Model Content

[0004] The purpose of this invention is to provide a non-stop refueling device for a biogas oil-injected screw compressor, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A non-stop refueling device for a biogas oil-injected screw compressor includes: a refueling pipe, a refueling tank, a first ball valve, a second ball valve, a first needle valve, and a second needle valve;

[0007] One end of the refueling pipe is connected to an oil-gas separation storage tank. The bottom end of the first ball valve is provided with a non-stop refueling port. The other end of the refueling pipe is connected to the non-stop refueling port. The top end of the first ball valve is connected to the refueling tank. A vertical pipe is connected between the second ball valve and the refueling tank. The ends of the first needle valve and the second needle valve that are close to each other are both connected to a horizontal pipe. The other end of the horizontal pipe is connected to the vertical pipe. An upper flange is provided on the top of the second ball valve.

[0008] Preferably, the other end of the first needle valve is connected to a vent pipe, the other end of the second needle valve is connected to a bypass pipe, and the other end of the bypass pipe is connected to an oil-gas separation storage tank.

[0009] Preferably, the top of the second ball valve is provided with a flange blind plate, the top of the flange blind plate is provided with a threaded through hole, and the top of the flange blind plate is provided with a pressure gauge.

[0010] Preferably, the first ball valve is a DN40 ball valve, and the second ball valve is a DN25 ball valve.

[0011] Preferably, both the first needle valve and the second needle valve are DN15 needle valves.

[0012] Preferably, the capacity of the fuel tank is 5L.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The non-stop lubrication device for a biogas oil-injected screw compressor described in this utility model can directly replenish lubricating oil during compressor operation, thereby completely avoiding production interruptions caused by shutdown for lubrication. In industrial production, compressors are often key equipment, and their continuous operation is crucial to ensuring the stability and efficiency of the overall process. Traditional lubrication methods require shutdown, which not only disrupts the production rhythm but may also trigger a chain reaction, affecting the output of downstream processes. This device, through optimized valve and pipeline design, achieves online lubrication, enabling the equipment to work seamlessly and continuously, greatly improving equipment utilization and the overall capacity of the production line. Especially for biogas compression and other applications requiring long-term operation, this non-stop characteristic can effectively reduce unplanned downtime, ensure timely completion of production targets, and reduce potential risks and losses caused by downtime. In addition, the operation process is simple and quick, further shortening the maintenance window and keeping the equipment in optimal operating condition, providing a solid guarantee for the stable operation of the enterprise.

[0015] 2. The biogas oil-injected screw compressor non-stop refueling device described in this utility model fully considers environmental protection and efficient resource utilization in its design. Through closed-loop operation, it effectively prevents the disorderly emission of process gases. Before refueling, the device allows the residual gas in the refueling tank to be safely introduced into a designated venting pipeline network instead of being directly discharged into the atmosphere. This significantly reduces the risk of the spread of harmful substances and meets the green standards of modern industry. At the same time, since the entire refueling process does not require gas replacement of the compressor system, it not only saves a lot of energy and time required for replacement, but also avoids the consumption or waste of additional gas.

[0016] 3. The biogas oil-injected screw compressor non-stop refueling device described in this utility model integrates multiple safety measures, such as pressure gauges and precision valves, ensuring a high degree of controllability and reliability in the operation process. The pressure gauge can monitor the system pressure in real time, providing operators with intuitive data feedback and preventing safety accidents caused by abnormal pressure. The combination of needle valves and ball valves allows for fine adjustment of flow and pressure, reducing the impact risk caused by sudden pressure changes. The flange connection enhances sealing, preventing lubricating oil or gas leakage, thereby ensuring the safety of the on-site working environment. The structural design of the entire device emphasizes stability, maintaining stable operation even when the compressor is running at high speed, reducing the probability of equipment failure. This high reliability not only protects personnel safety but also extends the service life of the equipment and reduces the possibility of unexpected downtime. Through standardized operating procedures, the device minimizes human error, making maintenance work safer and more efficient, meeting the strict requirements of industrial safety management.

[0017] 4. The biogas oil-injected screw compressor non-stop refueling device described in this utility model supports multiple refueling methods, such as manual addition or continuous refueling via connection to an oil pump, providing great operational flexibility and adapting to different site conditions and needs. This design simplifies the maintenance process, allowing operators to complete refueling tasks without special tools or complex training, significantly reducing labor intensity and time costs. The device's component layout is reasonable, facilitating daily inspections and rapid maintenance, reducing the difficulty of troubleshooting. For example, the modular design of valves and pipelines allows for partial repairs without affecting the overall system, further improving availability. In addition, the refueling process does not require interrupting compressor operation, allowing for more flexible maintenance plans and avoiding conflicts with production. This convenience is particularly suitable for high-load industrial environments where time is money, and any efficiency improvement can translate into tangible benefits. In the long term, the ease of use of the device helps cultivate operators' independent maintenance capabilities and promotes the improvement of overall equipment management. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a non-stop refueling device for a biogas oil-injected screw compressor proposed in this utility model;

[0019] Figure 2 This is a front view structural diagram of a non-stop refueling device for a biogas oil-injected screw compressor proposed in this utility model;

[0020] Figure 3 This is a cross-sectional structural schematic diagram of a non-stop refueling device for a biogas oil-injected screw compressor proposed in this utility model;

[0021] Figure 4 for Figure 3 A magnified view of part A in the middle.

[0022] In the diagram: 1. Non-stop oil filling port; 2. First ball valve; 3. Oil filling tank; 4. First needle valve; 5. Vent pipe; 6. Second ball valve; 7. Flange blind plate; 8. Pressure gauge; 9. Second needle valve; 10. Bypass pipe; 11. Oil-gas separation reservoir; 12. Oil filling pipe; 13. Horizontal pipe; 14. Vertical pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-4 A non-stop refueling device for a biogas oil-injected screw compressor includes: a refueling pipe 12, a refueling tank 3, a first ball valve 2, a second ball valve 6, a first needle valve 4, and a second needle valve 9;

[0025] One end of the refueling pipe 12 is connected to the oil-gas separation storage tank 11. The bottom end of the first ball valve 2 is provided with a non-stop refueling port 1. The other end of the refueling pipe 12 is connected to the non-stop refueling port 1. The top end of the first ball valve 2 is connected to the refueling tank 3. A vertical pipe 14 is connected between the second ball valve 6 and the refueling tank 3. The ends of the first needle valve 4 and the second needle valve 9 that are close to each other are both connected to a horizontal pipe 13. The other end of the horizontal pipe 13 is connected to the vertical pipe 14. An upper flange is provided on the top of the second ball valve 6.

[0026] In this embodiment, the other end of the first needle valve 4 is connected to the vent pipe 5, the other end of the second needle valve 9 is connected to the bypass pipe 10, and the other end of the bypass pipe 10 is connected to the oil-gas separation storage tank 11.

[0027] In this embodiment, a flange blind plate 7 is provided at the top of the second ball valve 6, a threaded through hole is provided at the top of the flange blind plate 7, and a pressure gauge 8 is provided at the top of the flange blind plate 7.

[0028] In this embodiment, the first ball valve 2 is a DN40 ball valve, and the second ball valve 6 is a DN25 ball valve.

[0029] In this embodiment, both the first needle valve 4 and the second needle valve 9 are DN15 needle valves.

[0030] In this embodiment, the capacity of the refueling tank 3 is 5L. The capacity of the refueling tank 3 can be set to different volumes according to the size of the unit. The parameters of the first ball valve 2, the second ball valve 6, the first needle valve 4, and the second needle valve 9 are set according to the actual size of the refueling tank 3.

[0031] In this embodiment, during use, the oil filling port 1 is located above the highest oil level in the oil separator. During normal unit operation, the first ball valve 2, the first needle valve 4, the second ball valve 6, and the second needle valve 9 are all in the closed state.

[0032] When refueling is required during unit operation, open the first needle valve 4 to release the process gas in the refueling tank 3 into the designated venting network through the vent pipe 5. After the pressure gauge 8 shows no pressure, remove the flange blind plate and pressure gauge 8, and close the first needle valve 4. At this time, refueling can be performed on the refueling tank 3 through the upper flange end of the second ball valve 6, either manually or using an oil pump. When the refueling tank 3 is full, close the second ball valve 6. Then open the second needle valve 9 and the first ball valve 2. The entire non-stop refueling device is now in the compressor system. The lubricating oil flows into the oil-gas separator and storage tank under the action of gas force and gravity. After a few minutes, close the second needle valve 9 and the first ball valve 2, thus completing the oil replenishment of the compressor lubrication system.

[0033] If the oil level is low, repeat the above steps several times to add oil until the required level for the oil-gas separator is reached.

[0034] In this embodiment, lubricating oil can be replenished without stopping the machine during operation, without delaying production. If a shutdown is required, the process gas in the compressor system can be recovered or discharged, preventing waste or pollution. After adding oil, there is no need to replace the gas in the compressor system, saving maintenance time and operating costs. Oil can be added manually or continuously by connecting an oil pump. It uses a flange connection and is equipped with a local pressure gauge 8, making operation safer and more reliable, and maintenance more convenient. This non-stop oiling method is lower in cost and safer and more reliable than other non-stop oiling solutions.

[0035] The above provides a detailed description of a non-stop oiling device for a biogas injection screw compressor provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A non-stop refueling device for a biogas oil-injected screw compressor, characterized in that, include: Refueling pipe (12), refueling tank (3), first ball valve (2), second ball valve (6), first needle valve (4), and second needle valve (9); One end of the refueling pipe (12) is connected to the oil-gas separation storage tank (11). The bottom end of the first ball valve (2) is provided with a non-stop refueling port (1). The other end of the refueling pipe (12) is connected to the non-stop refueling port (1). The top end of the first ball valve (2) is connected to the refueling tank (3). A vertical pipe (14) is connected between the second ball valve (6) and the refueling tank (3). The ends of the first needle valve (4) and the second needle valve (9) that are close to each other are connected to a horizontal pipe (13). The other end of the horizontal pipe (13) is connected to the vertical pipe (14). The top of the second ball valve (6) is provided with an upper flange.

2. The biogas oil-injected screw compressor non-stop refueling device according to claim 1, characterized in that, The other end of the first needle valve (4) is connected to a vent pipe (5), and the other end of the second needle valve (9) is connected to a bypass pipe (10). The other end of the bypass pipe (10) is connected to an oil-gas separation storage tank (11).

3. The biogas oil-injected screw compressor non-stop refueling device according to claim 1, characterized in that, The top of the second ball valve (6) is provided with a flange blind plate (7), the top of the flange blind plate (7) is provided with a threaded through hole, and the top of the flange blind plate (7) is provided with a pressure gauge (8).

4. The biogas oil-injected screw compressor non-stop refueling device according to claim 1, characterized in that, The first ball valve (2) is a DN40 ball valve, and the second ball valve (6) is a DN25 ball valve.

5. The biogas oil-injected screw compressor non-stop refueling device according to claim 1, characterized in that, Both the first needle valve (4) and the second needle valve (9) are DN15 needle valves.

6. The biogas oil-injected screw compressor non-stop refueling device according to claim 1, characterized in that, The capacity of the refueling tank (3) is 5L.

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