Oil way system for exhausting oil smoke by utilizing centrifugal fan

Abstract

The utility model discloses an oil way system for exhausting oil smoke by utilizing a centrifugal fan, and belongs to the technical field of oil smoke exhausting. Comprising a centrifugal fan body, a fan motor, a pipeline connecting outer edge, a PVC pipeline, an oil-smoke separator, a first transmission belt mounting module, a transmission rod, a motor fixing hole, a motor base, a bolt fixing hole, a gas discharging hole, a transmission shaft, centrifugal fan blades, an oil liquid discharging hole, a second transmission belt mounting module, a structure fixing bolt, an air inlet, an air outlet and a centrifugal machine base. The centrifugal fan is used for increasing air pressure, the air enters the oil smoke separator through the PVC pipeline, the PVC pipeline has the characteristic of preventing lubricating oil from being adhered, smooth circulation can be achieved, the oil smoke separator is used, oil and gas are separated in the separator by utilizing different weights of smoke and gas, the positive pressure environment at the position of the bearing seat is changed into negative pressure, and oil leakage at the position of the bearing seat is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil fume exhaust, and particularly relates to an oil circuit system for exhausting oil fume by using a centrifugal fan. Background Art

[0002] After the steam turbine unit is installed and during operation, it is found that the oil leakage at the bearing housing is serious. During this period, various measures have been taken but the hidden danger has not been completely solved. If the oil leakage problem is not solved, the hidden danger location is in a high-temperature environment and is extremely easy to be ignited, causing major accidents.

[0003] The existing technologies generally have the following problems in use:

[0004] 1. After the steam turbine unit is installed and during operation, it is found that the oil leakage at the bearing housing is serious: Fire risk: If the oil leakage problem is not solved in time, in a high-temperature environment, the lubricating oil is extremely easy to be ignited, which may cause a fire. The fire will not only cause serious damage to the steam turbine unit itself, but may also spread to other equipment and facilities, causing greater damage. Explosion risk: In an environment with high temperature and relatively high pressure, if the oil leakage contacts other combustible gases or substances, an explosion may be triggered. The consequences of the explosion may be extremely serious, not only damaging the equipment, but also causing casualties. Equipment shutdown and production interruption: If the oil leakage problem causes a fire or explosion, the steam turbine unit will be forced to shut down urgently. Such a shutdown may lead to the interruption of the entire production line, causing huge economic losses and having a negative impact on the production plan of the enterprise. The safety hazard is aggravated: The long-term oil leakage problem will not only lead to insufficient lubrication, but may also cause excessive wear of the bearings and related mechanical components, increasing the risk of equipment failure. When a failure occurs, the equipment may suddenly stop, causing safety hazards in case of emergency. Therefore, an oil circuit system that can avoid oil leakage at the bearing is urgently needed. Content of the Utility Model

[0005] The main purpose of the utility model is to provide an oil circuit system for exhausting oil fume by using a centrifugal fan, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: An oil circuit system for exhausting oil fume by using a centrifugal fan, including a centrifugal fan main body and an oil fume separator. An air inlet is arranged on the front surface of the centrifugal fan main body, a fan motor is arranged on the right side of the centrifugal fan main body, a drive belt installation module II is arranged on the back surface of the fan motor, bolt fixing holes are arranged at the lower end of the fan motor, an exhaust port is arranged on the left side of the centrifugal fan main body, a pipe connection outer edge is arranged at the front end of the exhaust port, the other end of the pipe connection outer edge is connected to a PVC pipe, the other end of the PVC pipe is connected to the oil fume separator, a gas discharge hole is arranged at the upper end of the oil fume separator, and an oil discharge hole is arranged at the lower end of the oil fume separator.

[0007] Further, a first drive belt installation module is provided on the back of the centrifugal fan main body. A drive rod is provided in the middle of the first drive belt installation module. The other end of the drive rod is connected to a drive shaft, and centrifugal fan blades are arranged around the drive shaft.

[0008] Further, structural fixing bolts are provided around the centrifugal fan main body. A centrifuge base is provided at the lower end of the centrifugal fan main body. Motor fixing holes are provided at the lower end of the centrifuge base. A motor base is provided at the lower end of the ventilation fan motor. Bolt fixing holes are provided at the four corners of the motor base. The motor base is fixed to the centrifuge base by connecting the motor fixing holes with the structural fixing bolts.

[0009] Further, a PVC pipe is fixed on the outer edge of the pipe connection by structural fixing bolts. The front end of the PVC pipe is designed with a structure that is wider at the front and narrower at the back.

[0010] Further, the upper outer edge of the gas discharge hole is connected to an external pipe through bolt fixing holes, and a ball valve can be installed in the oil discharge hole.

[0011] The utility model has the following beneficial effects:

[0012] 1. By using a centrifugal fan to increase the air pressure, it enters the oil fume separator through a PVC pipe. The PVC pipe has the characteristic of preventing lubricating oil adhesion and can flow smoothly. Using the oil fume separator, taking advantage of the different weights of smoke and gas, the oil and gas are separated in the separator, changing the positive pressure environment at the bearing seat to a negative pressure, avoiding oil leakage at the bearing seat, and bringing the following benefits: effectively eliminating the hidden danger of oil leakage: by changing the positive pressure environment at the bearing seat to a negative pressure environment, the possibility of lubricating oil leaking from the bearing seat is completely eliminated. The negative pressure environment not only effectively adsorbs possible oil fumes and oil liquids, but also ensures the sealing of the bearing seat and the stable operation of the system. Making full use of existing resources: in the solution, the idle centrifugal fan and waste steel in the warehouse are utilized, which not only reduces costs but also realizes the secondary utilization of resources. This method not only saves enterprise funds but also improves the utilization efficiency of resources. Improving system safety: Since the location of the oil leakage hidden danger is in a high-temperature environment, it is extremely easy to cause major accidents such as fires. Through this solution, the leakage of lubricating oil is successfully prevented, fundamentally eliminating the fire risk and greatly improving the safety of the system. Optimizing the exhaust effect: Using a centrifugal fan to increase the air pressure, the oil fumes are smoothly guided into the separator through a PVC pipe, effectively improving the exhaust efficiency of the oil fumes. At the same time, the PVC pipe has the characteristic of preventing lubricating oil adhesion, avoiding the accumulation of oil stains and pipe blockage. Efficient oil-gas separation: The oil fume separator made of waste steel makes full use of the difference in the weights of oil fumes and gas, realizing effective oil-gas separation inside the separator, further preventing the loss of lubricating oil, improving the operation efficiency and cleanliness of the equipment. Extending the service life of the equipment: By solving the oil leakage problem of the bearing seat, the wear and failure probability of equipment components are reduced, the service life of the steam turbine unit and the bearing is extended, and the maintenance and shutdown costs are reduced. Description of the Drawings

[0013] Figure 1 Schematic diagram of the overall structure of the present utility model Figure 1 ;

[0014] Figure 2 Schematic diagram of the overall structure of the present utility model Figure 2 ;

[0015] Figure 3 Bottom view sectional view of the present utility model;

[0016] Figure 4 Enlarged view of the structure of part A of the present utility model;

[0017] Figure 5 Schematic sectional structure diagram of the present utility model;

[0018] In the figure: 1. Centrifugal fan main body; 2. Fan motor; 3. Outer edge of pipeline connection; 4. PVC pipeline; 5. Oil fume separator; 6. First drive belt installation module; 7. Drive rod; 8. Motor fixing hole; 9. Bolt fixing hole; 10. Motor base; 11. Gas discharge hole; 12. Transmission shaft; 13. Centrifugal fan blade; 14. Oil discharge hole; 15. Second drive belt installation module; 16. Structure fixing bolt; 17. Air inlet; 18. Exhaust port; 19. Centrifuge base. Specific implementation mode

[0019] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Those skilled in the art should connect all the electrical components in this case to their adapted power supplies through wires, and should select a suitable controller according to the actual situation to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of the electrical components working in sequence in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of electrical control will be made.

[0023] Embodiment

[0024] Please refer to Figures 1 - 5 , the present utility model provides a technical solution:

[0025] In this embodiment, it includes a centrifugal fan main body 1 and an oil fume separator 5. An air inlet 17 is arranged on the front of the centrifugal fan main body 1. A fan motor 2 is arranged on the right side of the centrifugal fan main body 1. A belt installation module two 15 is arranged on the back of the fan motor 2. A bolt fixing hole 9 is arranged at the lower end of the fan motor 2. An exhaust port 18 is arranged on the left side of the centrifugal fan main body 1. A pipe connection outer edge 3 is arranged at the front end of the exhaust port 18. The other end of the pipe connection outer edge 3 is connected to a PVC pipe 4. The other end of the PVC pipe 4 is connected to the oil fume separator 5. A gas discharge hole 11 is arranged at the upper end of the oil fume separator 5. An oil discharge hole 14 is arranged at the lower end of the oil fume separator 5. In the above settings, the centrifugal fan main body 1 adopts a G4-73 type medium-pressure centrifugal fan of Shanghai Centrifugal Fan Factory Co., Ltd.; in the above settings, the fan motor 2 adopts a Y2 series three-phase asynchronous motor of Shanghai Electric Machinery Factory Co., Ltd.

[0026] In this embodiment, a belt installation module one 6 is arranged on the back of the centrifugal fan main body 1. A transmission rod 7 is arranged in the middle of the belt installation module one 6. The other end of the transmission rod 7 is connected to a transmission shaft 12. Centrifugal fan blades 13 are arranged around the transmission shaft 12.

[0027] In this embodiment, structure fixing bolts 16 are arranged around the centrifugal fan main body 1. A centrifuge base 19 is arranged at the lower end of the centrifugal fan main body 1. Motor fixing holes 8 are arranged at the lower end of the centrifuge base 19. A motor base 10 is arranged at the lower end of the fan motor 2. Bolt fixing holes 9 are arranged at the four corners of the motor base 10. The motor base 10 is fixed to the centrifuge base 19 by connecting the motor fixing holes 8 with the structure fixing bolts 16.

[0028] In this embodiment, the PVC pipe 4 is fixed on the pipe connection outer edge 3 by structure fixing bolts 16. The front end of the PVC pipe 4 adopts a structure design with a wider front and a narrower rear.

[0029] In this embodiment, the outer edge at the upper end of the gas discharge hole 11 is connected to an external pipe through bolt fixing holes 9. A ball valve can be installed at the oil discharge hole 14.

[0030] Features Before improvement After improvement Hidden danger of oil leakage in the bearing housing Serious oil leakage at the bearing housing. The positive pressure environment causes the lubricating oil to leak easily, requiring frequent maintenance and repair By changing the positive pressure environment to a negative pressure environment, the possibility of lubricating oil leakage is completely eliminated, reducing the maintenance requirements Resource utilization Additional procurement of equipment and materials is required, increasing the cost burden on the enterprise Making full use of the idle centrifugal ventilator and waste steel, the cost is reduced and secondary utilization of resources is achieved System safety Lubricating oil leakage in a high - temperature environment poses a fire risk, and the system operation safety is low By eliminating the hidden danger of oil leakage, the fire risk is avoided, greatly improving the system safety

[0031] In this embodiment, the system includes main components such as a centrifugal ventilator main body and an oil fume separator. An air inlet is provided on the front of the centrifugal ventilator main body, and a ventilator motor is installed on the right side. A drive belt installation module is equipped on the back of the ventilator motor to drive the transmission system. The lower end of the ventilator motor is fixed to the motor base by bolts to ensure the stability of the equipment. An exhaust port is provided on the left side of the centrifugal ventilator main body. The front end of the exhaust port is connected to the outer edge of the pipeline, and this outer edge is connected to a PVC pipeline. The other end of the PVC pipeline is connected to the oil fume separator. A gas discharge hole is provided at the upper end of the oil fume separator, and an oil discharge hole is provided at the lower end. A ball valve can be installed at the oil discharge hole to facilitate the discharge and control of the oil.

[0032] In this embodiment, the centrifugal ventilator main body adopted is a medium-pressure centrifugal ventilator from Shanghai Centrifugal Fan Factory Co., Ltd., which ensures the stability and efficiency of the air pressure. The ventilator motor is a three-phase asynchronous motor from Shanghai Electric Machinery Factory Co., Ltd., providing a reliable power source.

[0033] On the back of the centrifugal ventilator main body, a drive belt installation module is installed. Through this module, a transmission rod is connected. The other end of the transmission rod is connected to a transmission shaft, and centrifugal fan blades are installed around the transmission shaft to enhance air flow and improve the smoke exhaust efficiency of the system. The entire device is firmly installed through structural fixing bolts to ensure stability during operation. The motor is fixed on a special motor base and is tightly connected to the centrifuge base through bolt fixing holes, providing additional stability and durability.

[0034] In addition, the outer edge of the pipeline connection is firmly connected to the PVC pipeline through structural fixing bolts. The front end of the PVC pipeline adopts a structure design that is wider at the front and narrower at the back, which helps to optimize the air flow channel and discharge effect. The outer edge of the gas discharge hole is connected to the external pipeline through bolt fixing holes to ensure smooth gas discharge. At the same time, a ball valve can be installed at the oil discharge hole to facilitate the effective control and treatment of the discharged oil.

[0035] In the above embodiment, each component cooperates with each other. Through optimized design and resource utilization, multiple important system improvements and benefits are achieved synergistically. The following is the process of how these components cooperate with each other to achieve the above advantages:

[0036] Function of the centrifugal ventilator: The centrifugal ventilator provides a powerful power source for the entire system by increasing the air pressure. The centrifugal ventilator accelerates the air flow, quickly pushes the oil fume to the oil fume separator, and through the smooth flow of the PVC pipeline, ensures that the oil fume will not stay or condense in the pipeline. The powerful air pressure of the centrifugal ventilator changes the positive pressure environment at the bearing seat to a negative pressure environment, effectively preventing the lubricating oil from leaking from the bearing seat due to pressure difference.

[0037] Function of the PVC pipe: The PVC pipe connects the centrifugal fan and the oil fume separator and has the characteristic of preventing lubricating oil adhesion. It not only ensures the smooth flow of oil fume, avoids blockage problems inside the pipe, but also reduces the maintenance workload. The design of the pipe with a wider front and narrower rear further optimizes the air flow path, enabling the oil fume to flow into the separator more effectively and improving the overall smoke exhaust efficiency.

[0038] Function of the oil fume separator: The oil fume separator successfully separates the oil liquid and gas by taking advantage of the difference in weight between the oil fume and the gas. The gas is discharged through the gas discharge holes of the separator, while the oil liquid is centrally collected through the oil liquid discharge holes, thus reducing the waste of lubricating oil and system pollution. The design of this separator not only prevents the leakage of oil liquid but also ensures the maintenance of a negative pressure environment at the bearing housing, further enhancing the sealing and stability of the system.

[0039] Function of the drive system: The drive belt installation module, drive rod, and drive shaft transmit the power of the fan motor to the fan blades of the centrifugal fan through precise mechanical transmission, ensuring that the fan blades rotate at an appropriate speed to generate the required wind pressure. The efficient operation of this drive system is the key to the stable operation of the entire system, ensuring that all components work together under optimal conditions.

[0040] Function of the fixing and installation components: The fixing bolts, motor base, and structural fixing module in the system ensure the tight connection and stable installation between components, preventing any displacement or loosening during operation. These fixing components guarantee the overall stability and safety of the system, enabling the system to operate continuously and stably under high-temperature and high-pressure environments.

[0041] Comprehensive system benefits: Through the coordinated cooperation of the above components, the system effectively solves the problem of oil leakage at the bearing housing, prevents safety hazards such as fires, improves the operation efficiency and service life of the equipment. It makes full use of existing resources, reduces costs, improves the utilization efficiency of resources, and at the same time ensures the safety and reliability of the system. The coordinated action of each component ensures the efficient, stable, and safe operation of the system, achieving significant improvement effects and bringing multiple system-level benefits.

[0042] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An oil circuit system for exhausting oil smoke using a centrifugal fan, comprising a centrifugal fan body (1) and an oil smoke separator (5), characterized in that: An air inlet (17) is arranged on the front of the centrifugal fan body (1), a fan motor (2) is arranged on the right side of the centrifugal fan body (1), a transmission belt mounting module 2 (15) is arranged on the back side of the fan motor (2), a bolt fixing hole (9) is arranged at the lower end of the fan motor (2), an exhaust port (18) is arranged on the left side of the centrifugal fan body (1), a pipe connecting outer edge (3) is arranged at the front end of the exhaust port (18), the other end of the pipe connecting outer edge (3) is connected to a PVC pipe (4), the other end of the PVC pipe (4) is connected to an oil fume separator (5), a gas discharge hole (11) is arranged at the upper end of the oil fume separator (5), and an oil discharge hole (14) is arranged at the lower end of the oil fume separator (5).

2. The oil circuit system for exhausting oil smoke by using a centrifugal fan according to claim 1, characterized in that: A transmission belt mounting module (6) is arranged on the back of the centrifugal fan body (1), a transmission rod (7) is arranged in the middle of the transmission belt mounting module (6), the other end of the transmission rod (7) is connected to a transmission shaft (12), and centrifugal blades (13) are arranged around the transmission shaft (12).

3. The oil circuit system for exhausting oil smoke by using a centrifugal fan according to claim 1, characterized in that: The centrifugal fan body (1) is provided with structural fixing bolts (16) around it, a centrifuge base (19) is provided at the lower end of the centrifugal fan body (1), a motor fixing hole (8) is provided at the lower end of the centrifuge base (19), a motor base (10) is provided at the lower end of the fan motor (2), bolt fixing holes (9) are provided at four corners of the motor base (10), and the motor base (10) is connected to the motor fixing holes (8) by means of structural fixing bolts (16) and fixed to the centrifuge base (19).

4. The oil circuit system for exhausting oil smoke by using a centrifugal fan according to claim 1, characterized in that: The PVC pipe (4) is fixed to the outer edge (3) of the pipe connection by means of structural fixing bolts (16), and the front end of the PVC pipe (4) adopts a structural design of being wide at the front and narrow at the rear.

5. The oil circuit system for exhausting oil smoke by using a centrifugal fan according to claim 1, characterized in that: The outer edge of the upper end of the gas discharge hole (11) is connected to an external pipeline via a bolt fixing hole (9), and the oil discharge hole (14) can be installed with a ball valve.

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