Oil mist separator for gas turbine

Abstract

The invention relates to the technical field of gas turbines, in particular to an oil mist separator for a gas turbine, which comprises a hollow ball, two connecting pipes communicated with the interior of the hollow ball are fixedly mounted on the hollow ball, a detachable collecting tank is mounted at the bottom of the hollow ball, and a detachable Z-shaped butt joint pipe is mounted on one side of the hollow ball; the two connecting pipes are symmetrically arranged, the detachable filtering mechanisms are mounted at the upper ends of the two connecting pipes, each filtering mechanism comprises a mounting pipe mounted at the upper end of the corresponding connecting pipe, a filtering cylinder is fixedly mounted in each mounting pipe, the bottom of each filtering cylinder is inserted into the corresponding connecting pipe and is in clearance fit with the corresponding connecting pipe, and a through hole is formed in each filtering cylinder; the filter cartridge is filled with a carbon-based porous material; according to the oil mist separator, due to the alternate working mode of the two filtering mechanisms, the shutdown cleaning condition caused by adsorption saturation of a single filtering mechanism is avoided, it is guaranteed that the oil mist separator can continuously and stably operate, a powerful guarantee is provided for normal work of a gas turbine, and production interruption caused by the oil mist treatment problem is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of gas turbines, and particularly to an oil mist separator for a gas turbine. Background Art

[0002] A gas turbine is a thermal engine that converts the chemical energy of fuel into mechanical energy and is widely used in fields such as power generation, aviation propulsion, ship power, and industrial drive. During the operation of a gas turbine, a large amount of oil mist is generated. If these oil mists are directly discharged into the atmosphere, it will cause serious environmental pollution and also result in energy waste. In addition, the harmful substances in the oil mist may also pose a hazard to human health, such as causing respiratory diseases.

[0003] Currently, although there are some oil mist treatment devices, such as electrostatic precipitators, a single treatment method often fails to achieve an ideal purification effect. When an electrostatic precipitator treats oil mist, there may be a situation where some oil mists are not completely removed, resulting in a certain amount of oil mist still contained in the discharged gas, and the purification effect is not good. For this reason, some simple filter elements are added to its exhaust port for secondary filtration, but the filter elements need to be manually disassembled and cleaned regularly, and the operation is rather troublesome. Moreover, when the gas turbine needs to operate continuously for a long time, the disassembly and cleaning of the filter elements are even more troublesome.

[0004] Therefore, it is necessary to provide a new oil mist separator for a gas turbine to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an oil mist separator for a gas turbine to solve the problem that the existing filter elements need to be manually disassembled and cleaned regularly, the operation is rather troublesome, and when the gas turbine needs to operate continuously for a long time, the disassembly and cleaning of the filter elements are even more troublesome as mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An oil mist separator for a gas turbine, comprising a hollow ball, two connecting pipes fixedly installed on the hollow ball and communicating with its interior, a detachable collection tank installed at the bottom of the hollow ball, and a detachable Z-shaped docking pipe installed on one side of the hollow ball; Filter mechanism, two said connecting pipes are symmetrically arranged and detachable filter mechanisms are installed at the upper ends of both. The filter mechanism includes a mounting pipe installed at the upper end of the connecting pipe. A filter cylinder is fixedly installed inside the mounting pipe. The bottom of the filter cylinder is inserted into the connecting pipe and is in clearance fit with the connecting pipe. Through holes are provided on the filter cylinder. A carbon-based porous material is filled inside the filter cylinder. A heating mechanism is installed on the filter cylinder, and the heating mechanism can heat the carbon-based porous material inside the filter cylinder. A detachable connecting cylinder is installed at the upper end of the filter cylinder. A filter retaining net is fixedly installed at the bottom of the connecting cylinder. An electric control valve for closing the cavity of the connecting cylinder is installed on the connecting cylinder.

[0007] Preferably, an air inlet connecting head is fixedly installed on one side of the hollow ball, and the Z-shaped docking pipe is threadedly connected to the air inlet connecting head. A liquid discharge connecting head is fixedly installed at the bottom of the hollow ball, and the collection tank is threadedly connected to the liquid discharge connecting head.

[0008] Preferably, the middle section of the Z-shaped docking pipe is vertically arranged, and the Z-shaped docking pipe is located obliquely above the collection tank.

[0009] Preferably, a plurality of groups of turbulator plates arranged in a staggered manner are fixedly installed inside the Z-shaped docking pipe, and all the plurality of groups of turbulator plates are located in the middle section of the Z-shaped docking pipe.

[0010] Preferably, the mounting pipe is threadedly connected to the connecting pipe, and a sealing gasket is fixedly installed on the contact surface between the mounting pipe and the connecting pipe.

[0011] Preferably, the heating mechanism includes a plurality of heating rods. A plurality of vertical cavities distributed around the axis are provided inside the filter cylinder, and the plurality of heating rods are respectively inserted into the plurality of vertical cavities. An annular cavity communicating with the plurality of vertical cavities is also provided in the filter cylinder, and a heat conducting rod is installed in the annular cavity. The plurality of heating rods are connected in parallel through the heat conducting rod, and one end of the heat conducting rod extends outside the mounting pipe.

[0012] Preferably, a heat insulation protective sleeve is sleeved on the heat conducting rod extending outside the mounting pipe.

[0013] Preferably, the carbon-based porous material is a carbon aerogel with high porosity and high temperature resistance.

[0014] Preferably, the connecting cylinder is threadedly connected to the filter cylinder, and a sealing gasket is fixedly installed on the contact surface between the connecting cylinder and the filter cylinder.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The alternating working mode of the two filtering mechanisms in the present invention avoids the shutdown and cleaning situation caused by the adsorption saturation of a single filtering mechanism, ensures the continuous and stable operation of the oil mist separator, provides a strong guarantee for the normal operation of the gas turbine, and reduces the production interruption caused by oil mist treatment problems.

[0016] 2. The two filtering mechanisms in the present invention are used alternately. When the carbon-based porous material in one filtering mechanism adsorbs more oil mist, this mechanism can be closed and the other can be opened for work. The carbon-based porous material in the closed filtering mechanism is cleaned of oil liquid by the heating mechanism, so that it can be reused, reducing the time for manual cleaning of the filtering material and lowering the usage cost.

[0017] 3. By arranging several groups of staggered spoiler plates inside the Z-shaped docking pipe, the spoiler plates cause the oil mist to continuously change direction and speed during the flow process, generating turbulence. This helps the oil droplets in the oil mist to collide and coagulate with each other, thereby increasing the particle size of the oil droplets, making it easier for them to separate from the air flow under the action of gravity, and improving the separation efficiency of the oil mist. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a preferred embodiment of the oil mist separator for a gas turbine provided by the present invention; Figure 2 It is a schematic structural diagram of the hollow ball in the present invention; Figure 3 It is a schematic structural diagram of the filtering mechanism in the present invention; Figure 4 It is a schematic structural diagram of the filter cartridge in the present invention; Figure 5 It is a schematic cross-sectional structural diagram of the filter cartridge viewed from above in the present invention; Figure 6 It is a schematic structural diagram of the connecting cylinder in the present invention; Figure 7 It is a schematic structural diagram of the inside of the Z-shaped docking pipe in the present invention.

[0019] In the figure: 1. Hollow ball; 11. Air inlet connector; 12. Drainage connector; 2. Z-shaped docking pipe; 21. Spoiler plate; 3. Connecting pipe; 4. Collection tank; 5. Filtering mechanism; 51. Installation pipe; 52. Filter cartridge; 521. Through hole; 522. Vertical cavity; 523. Annular cavity; 53. Connecting cylinder; 531. Filtering mesh; 54. Electric control valve; 55. Carbon-based porous material; 6. Heating mechanism; 61. Heating rod; 62. Heat conducting rod; 63. Heat insulation protective sleeve. DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figure 1 - Figure 7 , an oil mist separator for a gas turbine in the illustrated figure, which includes a hollow ball 1, two connecting pipes 3 fixedly installed on the hollow ball 1 and communicating with its interior, a detachable collection tank 4 installed at the bottom of the hollow ball 1, and a detachable Z-shaped docking pipe 2 installed on one side of the hollow ball 1; a filtering mechanism 5, the two connecting pipes 3 are symmetrically arranged and filtering mechanisms 5 are installed at the upper ends of both. The filtering mechanism 5 includes a mounting pipe 51 installed at the upper end of the connecting pipe 3. A filtering cylinder 52 is fixedly installed in the mounting pipe 51. The bottom of the filtering cylinder 52 is inserted into the connecting pipe 3 and is in clearance fit with the connecting pipe 3. Through holes 521 are formed in the filtering cylinder 52. A carbon-based porous material 55 is filled inside the filtering cylinder 52. A heating mechanism 6 is installed on the filtering cylinder 52, and the heating mechanism 6 can heat the carbon-based porous material 55 inside the filtering cylinder 52. A detachable connecting cylinder 53 is installed at the upper end of the filtering cylinder 52. A filtering net 531 is fixedly installed at the bottom of the connecting cylinder 53. An electric control valve 54 for closing the cavity of the connecting cylinder 53 is installed on the connecting cylinder 53; In this solution, the device in the present invention is docked with the electrostatic precipitator through the Z-shaped docking pipe 2 and is used for the combined purification of the exhaust gas of the gas turbine unit; the device in the present invention performs secondary treatment on the oil mist after being treated by the electrostatic precipitator, further reducing the oil mist content and reducing environmental pollution. The oil mist enters the interior of the hollow sphere 1 through the Z-shaped docking pipe 2 and then enters the connecting pipe 3 from the hollow sphere 1. The oil mist is subjected to secondary treatment by the filtering mechanism 5; the oil mist contacts the carbon-based porous material 55 through the through holes 521 on the filter cartridge 52, and the oil mist is adsorbed by the carbon-based porous material 55. The carbon-based porous material 55 has a large specific surface area and good adsorption performance, and can effectively adsorb the oil liquid in the oil mist. The mist is filtered again through the filter mesh 531 and then discharged, realizing the efficient purification of the oil mist and improving the exhaust quality; there are two filtering mechanisms 5 in the present invention, and only one of the filtering mechanisms 5 is used each time, and the other filtering mechanism 5 is closed through the electric control valve 54. The two filtering mechanisms 5 are used alternately. When the carbon-based porous material 55 in one filtering mechanism 5 adsorbs more oil mist, this mechanism can be closed and the other can be opened for operation, ensuring the continuous and stable operation of the oil mist separator without long-term shutdown due to cleaning the adsorption material. The carbon-based porous material 55 in the filtering mechanism 5 that adsorbs too much oil mist needs to clean the attached oil liquid. The filter cartridge 52 is heated through the heating mechanism 6 to perform heat exchange on the carbon-based porous material 55. The oil liquid on the carbon-based porous material 55 will flow out from the carbon-based porous material 55 as it is heated, and the flowing oil liquid will flow along the pipe wall until it flows into the collection tank 4 for collection, facilitating the cleaning of the adsorption material, enabling the carbon-based porous material 55 to be reused, reducing the time for manual cleaning of the filter material, and reducing the use cost; Among them, the designs of the hollow sphere 1 and the connecting pipe 3 make the flow path of the oil mist in the device more reasonable. Part of the oil mist will adhere to the inner walls of the hollow sphere 1 and the connecting pipe 3 and slide into the collection tank 4, increasing the collection efficiency of the oil liquid and also reducing the residue of the oil mist in the device; Among them, the carbon-based porous material 55 is a carbon aerogel with high porosity and high temperature resistance. The high porosity makes the carbon aerogel have a huge specific surface area, which can provide more adsorption sites, thus having a stronger adsorption capacity for oil molecules and other impurities in the oil mist, effectively removing harmful substances in the oil mist, and improving the purification effect of the oil mist separator; when the gas turbine operates, it will generate high temperature. The high temperature resistance of the carbon aerogel enables it to maintain a stable structure and performance in such an environment, and will not deform, melt or lose its adsorption function due to high temperature, ensuring the long-term stable operation of the filtering mechanism 5 under the high temperature conditions of the gas turbine; Among them, when cleaning the oil in one of the filtering mechanisms 5, it is necessary to close this filtering mechanism 5 and use the other filtering mechanism 5 for filtering work. The filtering mechanism 5 is closed through the electric control valve 54, and the connecting pipe 3 connected to the closed filtering mechanism 5 is in a closed state, and the oil mist will not flow through it. The filtering mechanism 5 conducts oil cleaning through the heating mechanism 6. The oil flows into the collection tank 4 through the connecting pipe 3 and the hollow ball 1 and is collected. The filtering mechanism 5 with a closed upper end facilitates the heated oil to flow into the collection tank 4; Among them, the model of the electric control valve 54 is: SLA-5V-12VDC.

[0022] Furthermore, referring to Figure 2 : An air inlet connector 11 is fixedly installed on one side of the hollow ball 1, and the Z-shaped docking pipe 2 is threadedly connected to the air inlet connector 11. A liquid discharge connector 12 is fixedly installed at the bottom of the hollow ball 1, and the collection tank 4 is threadedly connected to the liquid discharge connector 12; This connection method facilitates the installation, debugging, and subsequent maintenance and overhaul of the equipment by the staff. When it is necessary to replace the Z-shaped docking pipe 2, the collection tank 4 or inspect and clean the inside of the hollow ball 1, only need to use the corresponding tool to unscrew the threaded connection part, without complicated operations, which can save a lot of time and labor costs.

[0023] The middle section of the Z-shaped docking pipe 2 is vertically arranged, and the Z-shaped docking pipe 2 is located obliquely above the collection tank 4. The vertically arranged middle section is beneficial for the oil mist to naturally fall under the action of gravity, which can avoid the oil in the collection tank from flowing back into the Z-shaped docking pipe 2 due to unexpected situations, thereby preventing the oil from flowing back to the electrostatic precipitator or other upstream equipment, ensuring the normal operation of the entire oil mist treatment system, and reducing equipment damage and failures that may be caused by oil backflow.

[0024] Furthermore, referring to Figure 4 and Figure 5 , the heating mechanism 6 includes several heating rods 61. A plurality of vertical cavities 522 are formed inside the filter cylinder 52 and are distributed around its axis, and several heating rods 61 are respectively inserted into the plurality of vertical cavities 522. An annular cavity 523 communicating with the plurality of vertical cavities 522 is also formed in the filter cylinder 52, and a heat conducting rod 62 is installed in the annular cavity 523. The several heating rods 61 are connected in parallel through the heat conducting rod 62, and one end of the heat conducting rod 62 extends outside the installation pipe 51; It should be noted that: The external heating device heats the heat conducting rod 62 located outside, so that its heat is transferred to the heating rod 61 for heat exchange with the filter cylinder 52, so that the oil on the carbon-based porous material 55 is heated and flows out of the carbon-based porous material 55 accordingly; Among them, a heat insulation protective sleeve 63 is sleeved on the heat conducting rod 62 extending outside the installation pipe 51, and the heat conducting rod 62 is wrapped by the heat insulation protective sleeve 63 to avoid heat loss; Among them, the installation pipe 51 is threadedly connected to the connecting pipe 3, and a sealing gasket is fixedly installed on the contact surface between the installation pipe 51 and the connecting pipe 3; the connecting cylinder 53 is threadedly connected to the filter cylinder 52, and a sealing gasket is fixedly installed on the contact surface between the connecting cylinder 53 and the filter cylinder 52; the threaded connection can provide a reliable mechanical connection, ensuring that the installation pipe 51 and the connecting pipe 3, and the connecting cylinder 53 and the filter cylinder 52 remain tightly connected during the operation of the equipment, and are not easily loosened due to factors such as vibration and pressure changes, ensuring the stability of the device and being conducive to its long-term stable operation; the sealing gasket enhances the sealing performance at the connection of the components, preventing oil mist from leaking from the contact surfaces of the installation pipe 51 and the connecting pipe 3, and the connecting cylinder 53 and the filter cylinder 52, ensuring that the oil mist can only be processed through the filtering mechanism 5 according to the designed path.

[0025] Furthermore, referring to Figure 7 , a number of groups of spoiler plates 21 are fixedly installed inside the Z-shaped docking pipe 2, and the number of groups of spoiler plates 21 are all located in the middle section of the Z-shaped docking pipe 2; the spoiler plates 21 cause the oil mist to continuously change its direction and speed during the flow process, generating turbulence. This helps the oil droplets in the oil mist to collide and coagulate with each other, thereby increasing the particle size of the oil droplets and making it easier for them to separate from the air flow under the action of gravity, improving the separation efficiency of the oil mist.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fuel mist separator for a gas turbine, comprising: A hollow ball (1), on which two connecting pipes (3) communicating with its interior are fixedly installed. A detachable collection tank (4) is installed at the bottom of the hollow ball (1), and a detachable Z-shaped docking pipe (2) is installed on one side of the hollow ball (1); It is characterized in that it further comprises: A filtering mechanism (5). The two connecting pipes (3) are symmetrically arranged and filtering mechanisms (5) are detachably installed at their upper ends. The filtering mechanism (5) includes a mounting pipe (51) installed at the upper end of the connecting pipe (3). A filtering cylinder (52) is fixedly installed in the mounting pipe (51). The bottom of the filtering cylinder (52) is inserted into the connecting pipe (3) and is in clearance fit with the connecting pipe (3). Through holes (521) are formed in the filtering cylinder (52). A carbon-based porous material (55) is filled inside the filtering cylinder (52). A heating mechanism (6) is installed on the filtering cylinder (52), and the heating mechanism (6) can heat the carbon-based porous material (55) inside the filtering cylinder (52). A detachable connecting cylinder (53) is installed at the upper end of the filtering cylinder (52). A filtering screen (531) is fixedly installed at the bottom of the connecting cylinder (53). An electric control valve (54) for closing the cavity of the connecting cylinder (53) is installed on the connecting cylinder (53).

2. The oil mist separator for a gas turbine according to claim 1, wherein: An air inlet connector (11) is fixedly installed on one side of the hollow ball (1), and the Z-shaped docking pipe (2) is threadedly connected to the air inlet connector (11). A liquid discharge connector (12) is fixedly installed at the bottom of the hollow ball (1), and the collection tank (4) is threadedly connected to the liquid discharge connector (12).

3. The oil mist separator for a gas turbine according to claim 1, wherein: The middle section of the Z-shaped docking pipe (2) is vertically arranged, and the Z-shaped docking pipe (2) is located obliquely above the collection tank (4).

4. The oil mist separator for a gas turbine according to claim 3, wherein: A number of groups of turbulator plates (21) are fixedly installed inside the Z-shaped docking pipe (2), and several groups of the turbulator plates (21) are all located in the middle section of the Z-shaped docking pipe (2).

5. A fuel mist separator for a gas turbine according to claim 1, characterized in that: The mounting pipe (51) is threadedly connected to the connecting pipe (3), and a sealing gasket is fixedly installed on the contact surface between the mounting pipe (51) and the connecting pipe (3).

6. The oil mist separator for a gas turbine according to claim 1, wherein: The heating mechanism (6) includes a number of heating rods (61). A number of vertical cavities (522) distributed around its axis are formed inside the filtering cylinder (52), and several heating rods (61) are respectively inserted into a plurality of vertical cavities (522). An annular cavity (523) communicating with the plurality of vertical cavities (522) is also formed in the filtering cylinder (52), and a heat conducting rod (62) is installed in the annular cavity (523). The several heating rods (61) are connected in parallel through the heat conducting rod (62), and one end of the heat conducting rod (62) extends outside the mounting pipe (51).

7. The oil mist separator for a gas turbine according to claim 6, characterized in that: A heat insulation protective sleeve (63) is sleeved on the heat conducting rod (62) extending outside the mounting pipe (51).

8. A fuel mist separator for a gas turbine according to claim 1, characterized in that: The carbon-based porous material (55) is a carbon aerogel with high porosity and high temperature resistance.

9. A fuel mist separator for a gas turbine according to claim 1, characterized in that: The connecting cylinder (53) is threadedly connected to the filter cylinder (52), and a sealing gasket is fixedly installed on the contact surface between the connecting cylinder (53) and the filter cylinder (52).

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