Oil mist removing device

Abstract

The utility model discloses an oil mist removing device which comprises a filter cartridge, an oil return pipe, a supporting pipe and a fan, the filter cartridge comprises an oil return port, an oil mist inlet and an air outlet; one end of the oil return pipe is connected with the oil return port, one end of the supporting pipe is connected with the oil mist inlet, and the fan inlet is connected with the air outlet through the air inlet pipe; the air inlet pipe is connected with a pressure adjusting pipe, one end of the pressure adjusting pipe is connected with the air inlet pipe, and the air inlet pipe is connected with an air filter and an adjusting valve in series. The oil mist removing device further comprises a pressure difference transmitter and a controller. One end of the pressure difference transmitter is connected with the oil mist inlet, and the other end of the pressure difference transmitter is connected with the air outlet; the regulating valve is an electromagnetic valve; and the pressure difference transmitter and the regulating valve are electrically connected with the controller. The oil mist removing device can automatically obtain the pressure difference between the oil mist inlet and the air outlet and automatically control the opening size of the regulating valve.

Description

Technical Field

[0001] The utility model relates to the field of steam turbines, in particular to an oil mist removal device. Background Art

[0002] The existing oil mist removal device, as Figure 1 shown, comprises a filter cartridge 1, an oil return pipe 3, a support pipe 4 and a fan 8; the filter cartridge 1 comprises an oil return port, an oil mist inlet and an air outlet; the upper end of the oil return pipe 3 is connected to the oil return port, and the lower end of the oil return pipe 3 extends into the fuel tank 11; the upper end of the support pipe 4 is connected to the oil mist inlet, and the lower end of the support pipe 4 is fixedly arranged on the top of the fuel tank 11 and communicated with the fuel tank 11; the inlet of the fan 8 is connected to the air outlet through an air inlet pipe 6, and the outlet of the fan 8 is connected with an exhaust pipe 7; a pressure regulating pipe is connected to the air inlet pipe 6, one end of the pressure regulating pipe is connected to the air inlet pipe 6, and the other end is communicated with the external air; an air filter 10 and a regulating valve 5 are connected in series on the air inlet pipe 6; a vacuum gauge I 9 is arranged at the oil mist inlet, and a vacuum gauge II 12 is arranged at the air outlet.

[0003] During operation, the lower end of the oil return pipe is extended into the fuel tank and reaches below the liquid level at which the unit operates and stops, and the fan is started, so that the oil mist in the fuel tank enters the filter cartridge through the support pipe, and after being filtered, separated and coalesced in the filter cartridge, oil droplets and air are separated from the oil mist; wherein the air is discharged to the atmosphere after treatment from the outlet of the fan according to relevant standards. The oil droplets flow back to the fuel tank through the oil return pipe.

[0004] During operation, it is required that a slightly negative pressure be maintained in the filter cartridge. Therefore, the pressure difference between the oil mist inlet and the air outlet is obtained through the readings of the vacuum gauge I and the vacuum gauge II, so as to understand the pressure condition in the filter cartridge, and then the opening size of the regulating valve is controlled to make

[0005] the air outlet communicate with the external air through the pressure regulating pipe. Thus, the pressure in the filter cartridge is adjusted. For example: when the oil mist amount at the oil mist inlet increases, the aperture of the regulating valve is closed; when the oil mist amount decreases, the aperture of the regulating valve is opened. The removal of oil mist under different oil mist amounts is realized. The air filter is used to filter the air output from the filter cartridge to avoid polluting the atmosphere.

[0006] Both the existing vacuum gauge I and vacuum gauge II rely on manual reading, and the regulating valve is also a manual valve, and the opening size of the valve needs to be adjusted manually. The oil mist removal device is arranged on the top of the fuel tank. In the field of steam turbines, the fuel tank is relatively high, generally more than 2 m. Operators often have to climb to the top of the fuel tank to read the readings, and then go to the regulating valve to adjust the opening size of the valve, and the operation is very cumbersome.

[0007] At some work sites, Vacuum Gauge 1 and Vacuum Gauge 2 are located far from the regulating valve. After an operator adjusts the regulating valve, they have to run to Vacuum Gauge 1 and Vacuum Gauge 2 to take readings and determine whether the regulating valve has been adjusted properly. If it is not adjusted properly, they have to run back to the regulating valve to continue the adjustment. The operation is very troublesome.

[0008] Therefore, it is particularly necessary to provide a new oil mist removal device that can automatically obtain the pressure difference between the oil mist inlet and the air outlet and automatically control the opening size of the regulating valve. Utility Model Content

[0009] The purpose of the present utility model is to provide an oil mist removal device that can automatically obtain the pressure difference between the oil mist inlet and the air outlet and automatically control the opening size of the regulating valve in view of the above problems.

[0010] The technical solution adopted by the present utility model is as follows:

[0011] An oil mist removal device includes a filter cartridge, a return oil pipe, a support pipe, and a fan; the filter cartridge includes an oil return port, an oil mist inlet, and an air outlet; one end of the return oil pipe is connected to the oil return port, one end of the support pipe is connected to the oil mist inlet, and the fan inlet is connected to the air outlet through an intake pipe; a pressure regulating pipe is connected to the intake pipe, one end of the pressure regulating pipe is connected to the intake pipe, and an air filter and a regulating valve are connected in series on the intake pipe; the oil mist removal device further includes a differential pressure transmitter and a controller; one end of the differential pressure transmitter is connected to the oil mist inlet, and the other end is connected to the air outlet; the regulating valve is a solenoid valve; the differential pressure transmitter, the regulating valve, and the fan are all electrically connected to the controller.

[0012] Further, one end of the differential pressure transmitter is connected to the oil mist inlet through a detection pipe 1, and the other end of the differential pressure transmitter is connected to the air outlet through a detection pipe 2; a maintenance valve 1 is provided on the detection pipe 1; a maintenance valve 2 is provided on the detection pipe 2.

[0013] Further, the maintenance valve 1 and the maintenance valve 2 are manual valves.

[0014] Further, the maintenance valve 1 and the maintenance valve 2 are solenoid valves, and the maintenance valve 1 and the maintenance valve 2 are both electrically connected to the controller. Further, an exhaust pipe is connected to the fan outlet; the exhaust pipe is connected to the support pipe through a connecting pipe, and a throttle valve is provided on the connecting pipe.

[0015] Further, an exhaust valve and a tail gas filtering device are provided at the outlet end of the exhaust pipe.

[0016] Further, the throttle valve and the exhaust valve are manual valves; or the throttle valve and the exhaust valve are both solenoid valves, and the throttle valve and the exhaust valve are both electrically connected to the controller.

[0017] Further, the controller is also electrically connected to a display device and control buttons.

[0018] Further, the controller is connected to a remote terminal through wireless communication. The remote terminal includes a remote controller, a remote display device, and remote control buttons. The remote controller is connected to the controller through wireless communication, and both the remote display device and the remote control buttons are electrically connected to the remote controller.

[0019] Further, the controller and the remote controller are connected to a mobile terminal through wireless communication.

[0020] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0021] Compared with the prior art, the present utility model can directly obtain the pressure difference between the oil mist inlet and the air outlet through a differential pressure transmitter and then send it to the controller. Since the regulating valve is a solenoid valve, the controller can automatically control the opening size of the regulating valve according to the pressure difference obtained by the differential pressure transmitter. The present utility model can automatically obtain the pressure difference between the oil mist inlet and the air outlet and automatically control the opening size of the regulating valve. Compared with the prior art, the operation is more convenient. Description of the Drawings

[0022] Figure 1 is a structural diagram of the prior art;

[0023] Figure 2 is a structural diagram of the present utility model;

[0024] Figure 3 is a connection diagram among the differential pressure transmitter, the regulating valve, the fan, the first maintenance valve, the second maintenance valve, the throttle valve, the exhaust valve, the display device, the control buttons, the remote display device, the remote control buttons, the controller, the remote controller, and the mobile terminal;

[0025] In the figure, 1 - filter cartridge, 2 - filter element, 3 - return oil pipe, 4 - support pipe, 5 - regulating valve, 6 - intake pipe, 7 - exhaust pipe, 8 - fan, 9 - vacuum gauge 1, 10 - air filter, 11 - fuel tank, 12 - vacuum 2, 13 - throttle valve, 14 - connecting pipe, 15 - differential pressure transmitter, 16 - second maintenance valve, 17 - first maintenance valve, 18 - exhaust valve. Detailed Embodiments

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0028] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0029] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of this utility model is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It 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", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected with" should be understood in a broad sense. For example, it 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.

[0032] Such as Figure 2 、3 As shown in the figure, the utility model discloses an oil mist removal device, which comprises a filter cartridge 1, a return oil pipe 3, a support pipe 4 and a fan 8; the filter cartridge 1 comprises an oil return port, an oil mist inlet and an air outlet; one end of the return oil pipe 3 is connected to the oil return port, one end of the support pipe 4 is connected to the oil mist inlet, and the inlet of the fan 8 is connected to the air outlet through an air inlet pipe 6; a pressure regulating pipe is connected to the air inlet pipe 6, one end of the pressure regulating pipe is connected to the air inlet pipe 6, and the other end is communicated with the air outside the filter cartridge 1. An air filter 10 and a regulating valve 5 are connected in series on the air inlet pipe 6; the oil mist removal device further comprises a differential pressure transmitter 15 and a controller; one end of the differential pressure transmitter 15 is connected to the oil mist inlet, and the other end is connected to the air outlet; the regulating valve 5 is an electromagnetic valve;

[0033] The differential pressure transmitter 15, the regulating valve 5 and the fan 8 are all electrically connected to the controller.

[0034] Compared with the prior art, the utility model can directly obtain the pressure difference between the oil mist inlet and the air outlet through the differential pressure transmitter 15 and then send it to the controller. Since the regulating valve 5 is an electromagnetic valve, the controller can automatically control the opening size of the regulating valve 5 according to the pressure difference obtained by the differential pressure transmitter 15. In the utility model, the start and stop of the fan can also be automatically controlled by the controller.

[0035] The utility model can automatically obtain the pressure difference between the oil mist inlet and the air outlet and automatically control the opening size of the regulating valve 5. Compared with the prior art, the operation is more convenient.

[0036] The filter cartridge 1 comprises a cylinder body and a filter element 2 installed in the cylinder body; the filter element 2 is cylindrical, and a pre-filter chamber communicated with the support pipe 4 is formed inside it. A post-filter chamber connected to the return oil pipe 3 is formed between the filter element 2 and the cylinder body. One side of the filter element 2 away from the bottom of the cylinder body is a closed structure, so that the oil mist in the pre-filter chamber can only be discharged to the post-filter chamber through the filter element 2. The oil mist inlet is opened at the bottom of the filter cartridge 1 and communicated with the pre-filter chamber, the oil return port is opened at the bottom of the filter cartridge 1 and communicated with the post-filter chamber, and the air outlet is opened on the top side wall of the filter cartridge 1 and communicated with the post-filter chamber.

[0037] During operation, the support pipe 4 transports the oil mist in the fuel tank 11 to the pre-filter chamber, and then filters, separates and coalesces through the filter element 2 to separate oil droplets and air. The oil droplets enter the post-filter chamber and return to the fuel tank 1111 through the return oil pipe 3, and the air is discharged from the air outlet of the filter cartridge 1 under the action of the fan 8.

[0038] The filter element 2 includes an inner coarse filtration layer, a fine filtration layer, and an outer coarse filtration layer from the inside out. The pore size of the fine filtration layer is smaller than that of the inner coarse filtration layer and the outer coarse filtration layer, and the thickness of the fine filtration layer is greater than that of the inner coarse filtration layer and the outer coarse filtration layer.

[0039] Since the filter element 2 is multi-layered, the filter element 2 can perform multi-stage filtration and conversion on the oil mist, so that pollutants are fully converted and filtered.

[0040] Further, one end of the differential pressure transmitter 15 is connected to the oil mist inlet through the first detection pipe, and the other end of the differential pressure transmitter 15 is connected to the air outlet through the second detection pipe; a first maintenance valve 17 is provided on the first detection pipe; a second maintenance valve 16 is provided on the second detection pipe.

[0041] Due to the existence of the first maintenance valve 17 and the second maintenance valve 16, when the differential pressure transmitter 15 fails, the first maintenance valve 17 and the second maintenance valve 16 can be closed, and then the differential pressure transmitter 15 can be disassembled. For temporary use, an existing vacuum gauge one 9 and a vacuum gauge two 12 can also be temporarily connected to the first maintenance valve 17 and the second maintenance valve 16 respectively.

[0042] In the present utility model, the first maintenance valve 17 and the second maintenance valve 16 can be manual valves or solenoid valves. When the first maintenance valve 17 and the second maintenance valve 16 are solenoid valves, the first maintenance valve 17 and the second maintenance valve 16 are both electrically connected to the controller. When the first maintenance valve 17 and the second maintenance valve 16 are solenoid valves, it is convenient to realize automatic control. Further, an exhaust pipe 7 is connected to the outlet of the fan 8; the exhaust pipe 7 is connected to the support pipe 4 through a connecting pipe 14, and a throttle valve 13 is provided on the connecting pipe 14.

[0043] Due to the existence of the connecting pipe 14 and the throttle valve 13, during operation, when the fan 8 is turned on, the filtered and separated air enters the fan 8 from the intake pipe 6 under the action of the fan 8, and then is discharged through the exhaust pipe 7; when the filter cartridge 1 fails and cannot work again, at this time the exhaust pipe 7 will be connected to the support pipe 4, so that the oil droplets coalesced during the air discharge process return to the fuel tank 11 through the support pipe 4.

[0044] Further, an exhaust valve 18 and a tail gas filtration device are provided at the outlet end of the exhaust pipe 7, and the tail gas filtration device is located downstream of the exhaust valve 18, Figure 2 not shown in the figure.

[0045] In the present utility model, the throttle valve 13 and the exhaust valve 18 are manual valves; they can also be solenoid valves. When the throttle valve 13 and the exhaust valve 18 are solenoid valves, the throttle valve 13 and the exhaust valve 18 are both electrically connected to the controller. When the throttle valve 13 and the exhaust valve 18 are solenoid valves, it is convenient to realize automatic control.

[0046] Further, the controller is also electrically connected to a display device and control buttons.

[0047] Due to the presence of the display device, the working state of the entire oil mist removal device can be displayed through the display device, such as the parameters of the differential pressure transmitter 15, and the states of the regulating valve 5 and the throttle valve 13; due to the presence of the control buttons, the working state of the entire oil mist removal device can be controlled through the control buttons, such as controlling the opening sizes of the regulating valve 5 and the throttle valve 13.

[0048] Further, the controller is connected to a remote terminal through wireless communication. The remote terminal includes a remote controller, a remote display device, and remote control buttons; the remote controller is connected to the controller through wireless communication, and both the remote display device and the remote control buttons are electrically connected to the remote controller.

[0049] The controller can be set at the installation site of the oil mist removal device, for example, on the outer wall of the fuel tank 11; the remote terminal is set in the remote central control room. Since the controller is connected to the remote controller, the controller can send the data therein to the remote controller, so that the operators in the central control room can understand the working state of the oil mist removal device through the remote display device and can also control the working state of the oil mist removal device through the remote control buttons.

[0050] Further, the controller and the remote controller are connected to a mobile terminal through wireless communication.

[0051] Due to the presence of the mobile terminal, the operators can more conveniently understand the working conditions of the oil mist removal device and the remote terminal, and can also control the oil mist removal device and the remote terminal through the mobile terminal. The mobile terminal is a mobile phone or a tablet computer.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An oil mist removal device, comprising a filter cartridge (1), an oil return pipe (3), a support pipe (4) and a fan (8); the filter cartridge (1) comprises an oil return port, an oil mist inlet and an air outlet; one end of the oil return pipe (3) is connected to the oil return port, one end of the support pipe (4) is connected to the oil mist inlet, and the inlet of the fan (8) is connected to the air outlet via an air intake pipe (6); a pressure regulating pipe is connected to the air intake pipe (6), one end of the pressure regulating pipe is connected to the air intake pipe (6), and an air filter (10) and a regulating valve (5) are connected in series to the air intake pipe (6); the characteristics are: The oil mist removal device further comprises a differential pressure transmitter (15) and a controller; one end of the differential pressure transmitter (15) is connected to the oil mist inlet, and the other end is connected to the air outlet; the regulating valve (5) is a solenoid valve; the differential pressure transmitter (15), the regulating valve (5) and the fan (8) are all electrically connected to the controller.

2. The oil mist removal device according to claim 1, characterized in that: One end of the differential pressure transmitter (15) is connected to the oil mist inlet via a detection tube 1, and the other end of the differential pressure transmitter (15) is connected to the air outlet via a detection tube 2; a first inspection valve (17) is provided on the detection tube 1; and a second inspection valve (16) is provided on the detection tube 2.

3. The oil mist removal device according to claim 2, characterized in that: The inspection valve 1 (17) and the inspection valve 2 (16) are manual valves.

4. The oil mist removal device according to claim 2, characterized in that: The inspection valve 1 (17) and the inspection valve 2 (16) are solenoid valves, and the inspection valve 1 (17) and the inspection valve 2 (16) are both electrically connected to the controller.

5. The oil mist removal device according to claim 3 or 4, characterized in that: The outlet of the fan (8) is connected to an exhaust pipe (7); the exhaust pipe (7) is connected to the support pipe (4) via a connecting pipe (14), and a throttle valve (13) is provided on the connecting pipe (14).

6. The oil mist removal device according to claim 5, characterized in that: An exhaust valve (18) and an exhaust gas filtering device are provided at the outlet end of the exhaust pipe (7).

7. The oil mist removal device according to claim 6, characterized in that: The throttle valve (13) and the exhaust valve (18) are manual valves; or the throttle valve (13) and the exhaust valve (18) are solenoid valves, and the throttle valve (13) and the exhaust valve (18) are both electrically connected to a controller.

8. The oil mist removal device according to claim 7, characterized in that: The controller is also electrically connected to a display device and control buttons.

9. The oil mist removal device according to claim 8, characterized in that: The controller is connected to the remote terminal via wireless communication, and the remote terminal includes a remote controller, a remote display device and a remote control button; the remote controller is connected to the controller via wireless communication, and the remote display device and the remote control button are both electrically connected to the remote controller.

10. The oil mist removal device according to claim 9, characterized in that: The controller and the remote controller are connected to the mobile terminal by wireless communication.

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