Oil bath type air inlet filter

Abstract

An oil bath type air inlet filter belongs to the technical field of separation of solid particles in air and comprises a base, a primary filtering portion is arranged at the front end of the base, the rear end of the primary filtering portion is communicated with a filtering portion, the rear end of the filtering portion is communicated with a connecting portion, the rear end of the connecting portion is communicated with a silencing portion, and the rear end of the silencing portion is communicated with a connecting pipe head. The filtering part and the noise reduction part are fixed on the base, the primary filtering part is used for filtering large-particle-size gravel entering air flow inside the primary filtering part, the large-particle-size gravel is prevented from entering the filtering part by blocking the large-particle-size gravel, the filtering pressure of the filtering part is prevented from being increased, the filtering part is used for filtering small-particle-size gravel in the air flow through adhesion in an oil adhesion mode, and the noise reduction effect is good. The adhesion type filtering can effectively remove superfine particles in the air and can also block part of small-particle-size sandstones entering the filtering part, and part of large-particle-size and heavy-weight sandstones are blocked through the filtering part, so that the filtering pressure of the filtering part is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of separation of solid particles in air, and particularly to an oil-bath type intake filter. Background Art

[0002] In desert areas, diesel gas turbines, as the core power equipment for power supply, oilfield operations and industrial applications, and compressor equipment used in desert areas, etc. have long faced severe challenges brought by extreme climate environments. Harsh conditions such as high temperature and sandstorms not only accelerate equipment aging, but also cause irreversible damage to core components. Among them, the problem that high-concentration sand and gravel particles in the air enter the cylinder block along with the intake air, resulting in scratches and increased wear on the inner wall of the cylinder block, is particularly prominent, seriously threatening the operation stability and service life of the equipment.

[0003] To solve the problem of sand and gravel particles intrusion, the existing technology generally uses consumable filters such as filter cotton and filter cloth and installs them at the intake port. However, this solution has exposed the following defects in the desert environment application: High maintenance cost and affecting continuous operation: The dust load in desert areas far exceeds that in conventional environments, and the clogging rate of filter materials increases exponentially, forcing the replacement frequency to increase significantly. Frequent shutdowns for replacing filter materials seriously interfere with the stability of continuous operation scenarios such as oilfield booster stations and electric fracturing, indirectly resulting in a decrease in production efficiency.

[0004] Limited intake air flux and dynamic attenuation: The initial air flux of traditional filter materials is limited by the fiber pore density, and as dust adheres to form a filter cake layer, the flux shows a cliff-like decline (for example, the flux decays by more than 60% after running for 48 hours), triggering risks such as power fluctuations and even surging of gas turbines.

[0005] Lack of environmental adaptability and sustainability: The interception efficiency of filter cotton / cloth for ultrafine particles (<10μm) is insufficient, and it cannot cope with the salt corrosion problem in sand and dust, further exacerbating the fouling of compressor blades and the oxidation of hot channel components. In addition, the waste treatment of consumables is prone to cause secondary pollution in ecologically fragile areas, which is contrary to the trend of green and low-carbon development.

[0006] Although some improvement schemes attempt to introduce multi-stage filtration (such as cyclone separation + electrostatic precipitation), multi-stage filtration is difficult to meet the requirements of desert scenarios for equipment compactness and low maintenance in addition to the problems of high structural complexity and increased energy consumption. In addition, when air enters through multi-stage filtration, the air flux will be seriously affected, resulting in a problem of insufficient air supply. In order to increase the intake air volume, the power of the induced draft fan needs to be increased, which will undoubtedly increase the energy consumption during filtration. Therefore, there is an urgent need for an intake filtration technology that takes into account high filtration efficiency, long-term stable flux and environmental adaptability to break through the application bottleneck of diesel gas turbines in desert areas. Summary of the Invention

[0007] The present invention provides an oil bath type air intake filter to solve the deficiencies of the above-mentioned prior art, and solves the problems of high cost, poor filtration effect, rapid filtration attenuation, and excessive pressure loss existing in the existing air intake filtration.

[0008] In order to achieve the object of the present invention, the following technology is proposed: An oil bath type air intake filter includes a base. An initial filter part is provided at the front end of the base. The rear end of the initial filter part is communicated with a filter part. The rear end of the filter part is communicated with a connection part. The rear end of the connection part is communicated with a silencing part. The rear end of the silencing part is communicated with a connection pipe head. The filter part and the silencing part are fixed on the base. The initial filter part filters the larger-sized sand and gravel in the airflow entering its interior. By blocking the larger-sized sand and gravel, it avoids them from entering the filter part, so as not to increase the filtration pressure of the filter part. The filter part filters the smaller sand and gravel in the airflow by adhesion with oil. This adhesion type of filtration can effectively remove the ultrafine particles in the air and can also block part of the smaller-sized sand and gravel entering the filter part. And part of the larger-sized and heavier sand and gravel has been blocked by the filter part, so the filtration pressure of the filter part is reduced. The silencing part reduces the noise generated by the initial filter part, the filter part, and the gas turbine. The connection pipe head is connected to the fuel turbine to supply the oxygen required for combustion to the fuel turbine.

[0009] The advantages of the above technical solution are as follows: The present invention first conducts primary filtration on part of the sand and gravel through the initial filter part, which can reduce the load of the filter part while avoiding a large accumulation of sand and gravel in the filter part, thus affecting the filtration effect. And part of the sand and gravel and ultrafine dust in the air are then adsorbed or blocked by the oil on the filter part when passing through the filter part, thereby further improving the cleanliness of the air. At the same time, the oil adsorption method reduces the filtration cost while extending the service life. Description of the Drawings

[0010] In order to make the object, technical solution, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings.

[0011] Figure 1 Shows the three-dimensional structure diagram of the oil bath type air intake filter.

[0012] Figure 2 Shows the three-dimensional structure diagram of the base and the initial filter part from the first perspective.

[0013] Figure 3 Shows the three-dimensional structure diagram of the base and the initial filter part from the second perspective.

[0014] Figure 4 Shows the three-dimensional structure diagram of the inner frame of the initial filter and the enlarged three-dimensional structure diagram of the limiting strip.

[0015] Figure 5 Shows a three-dimensional structure diagram of the primary filter inner frame and the folded member.

[0016] Figure 6 Shows a top view of the folded member.

[0017] Figure 7 Shows a three-dimensional structure diagram of the base, the filtering part, the connecting part, the sound-absorbing part and the connecting pipe head.

[0018] Figure 8 Shows a three-dimensional structure diagram of the rectangular frame and the driving device thereon.

[0019] Figure 9 Shows a three-dimensional structure diagram of the rectangular frame and its internal structure.

[0020] Figure 10 Shows a three-dimensional structure diagram inside the rectangular frame.

[0021] Figure 11 Shows a display diagram after the curtain sheets and the chain inside the rectangular frame are assembled.

[0022] Figure 12 Shows a three-dimensional structure diagram of the chain and the sprocket.

[0023] Figure 13 Shows a three-dimensional structure diagram of the chain and the curtain sheet.

[0024] Figure 14 Shows Figure 13 An enlarged view of part B in

[0025] Figure 15 Shows a three-dimensional structure diagram of the concave hook.

[0026] Figure 16 Shows a three-dimensional structure diagram of the driving device from the first perspective.

[0027] Figure 17 Shows a three-dimensional structure diagram of the driving device from the second perspective.

[0028] Figure 18 Shows a three-dimensional structure diagram of the connecting part.

[0029] Figure 19 Shows a three-dimensional structure diagram of the sound-absorbing part.

[0030] Figure 20 Shows a three-dimensional structure diagram inside the sound-absorbing part.

[0031] Explanation of reference numerals: Base 1, primary filter section 2, filter section 3, connecting section 4, soundproofing section 5, connecting pipe head 6, bottom plate 200, side plate 201, top plate 202, control cabinet 203, first opening and closing door 204, first bolt 205, lower fixing strip 206, middle vertical strip 207, primary filter inner frame 208, installation outer frame 209, limit strip 210, front bayonet 211, discharge inclined plate 212, first protective plate 213, support plate 214, hole 215, baffle 216, inner fixing frame 217, leakage hole 218, folding part 219, first folding plate 220, first inclined plate 221, first bent plate 222, second folding plate 223, second bent plate 224, third bent plate 225, third folding plate 226, fourth bent plate 227, second inclined plate 228, air inlet frame body 229, rectangular frame 300, drain pipe 301, opening and closing valve 302, third inclined plate 303, second protective plate 304, vertical plate 305, fourth inclined plate 306, third protective plate 307, shielding baffle 308, drive cabinet 309, rectangular skeleton 310, cross bar 311, diagonal brace 312, vertical brace 313, concave part 314, horizontal strip 315, fixing screw 316, vertical protective rod 317, second hinge 318, cover plate 319, fixing seat 321, concave seat 322, motor fixing seat 323, strip hole 324, screw 325, motor 326, driving pulley 327, belt 328, driven pulley 329, reducer fixing seat 330, reducer 331, output shaft 332, eccentric wheel 333, eccentric shaft 334, swing arm 335, connecting shaft 336, connecting arm 337, rotating inner shaft 338, moving pawl 339, fixing pin 340, fixed pawl 341, rotating inner seat 342, transmission shaft 343, support rotating seat 344, sprocket 345, convex part 347, V-shaped groove 348, chain 349, sleeve 350, chain plate 351, strip groove 352, arc hole 353, notch 354, curtain piece 356, concave cover 357, rectangular opening 358, pin shaft 359, L-shaped hanging plate 360, hanging opening 361, concave hook 362, hanging rod 363, ratchet 364, conical frame 40, second opening and closing door 41, second bolt 42, support frame 50, conveying pipe 51, vertical part 52, wedge structure 53, arc surface 54. Detailed implementation manners

[0032] As Figure 1As shown in the figure, an oil-bath type intake air filter includes a base 1. A primary filter section 2 is provided at the front end of the base 1. The rear end of the primary filter section 2 is connected to a filter section 3. The rear end of the filter section 3 is connected to a connecting section 4. The rear end of the connecting section 4 is connected to a silencing section 5. The rear end of the silencing section 5 is connected to a connecting pipe head 6. The filter section 3 and the silencing section 5 are fixed on the base 1. The primary filter section 2 filters the larger-sized sand and gravel in the airflow entering its interior. The filter section 3 filters the smaller sand and gravel in the airflow by adhesion with oil. The silencing section 5 reduces the noise generated by the primary filter section 2, the filter section 3, and the gas turbine. The connecting pipe head 6 is connected to the fuel turbine to supply the oxygen required for combustion to the fuel turbine.

[0033] As Figures 2 to 6 shown, the primary filter section 2 includes an intake air frame body 229 installed on the front end of the base 1 by screws. The lower end of the intake air frame body 229 is a bottom plate 200 installed on the front end of the base 1 by screws. A pair of parallel side plates 201 are installed on the bottom plate 200 by screws. The upper ends of the side plates 201 are installed with a top plate 202 by screws. A lower fixing strip 206 is installed inside the lower end of the intake end of the side plate 201 by bolts. A middle vertical strip 207 is fixed at the middle position in the length direction of the lower fixing strip 206. A control cabinet 203 is installed on one of the side plates 201 by screws. An inspection opening is provided at the lower end of one of the side plates 201. A first opening and closing door 204 is connected to the inspection opening by a first hinge. A first door bolt 205 is provided on the first opening and closing door 204. Through the inspection opening, it is convenient to perform operations such as inspection and cleaning on the interior of the primary filter section 2 and the filter section 3. The above-mentioned first door bolt 205 includes a rotating part rotatably provided on the first opening and closing door 204 and a clamping part fixed on the side plate 201 by screws. When the first opening and closing door 204 is in the closed state, the front end of the rotating part on the first door bolt 205 is connected to the clamping part on the side plate 201. When the first opening and closing door 204 is in the open state, the front end of the rotating part on the first door bolt 205 is disengaged from the clamping part on the side plate 201.

[0034] Two primary filter inner frames 208 are installed in the cavity formed by enclosing the bottom plate 200, the side plates 201, and the top plate 202, as Figure 4 shown. An installation outer frame 209 is welded on the outer peripheral side of the primary filter inner frame 208. The lower end of the installation outer frame 209 is installed on the lower fixing strip 206 by bolts. The outer side of the installation outer frame 209 is installed on the side plate 201 by bolts. The upper end of the installation outer frame 209 is installed on the top plate 202 by bolts. The inner side of the installation outer frame 209 is installed on the middle vertical strip 207 by bolts. The installation of the installation outer frame 209 is mainly to improve the sealing effect between the primary filter inner frame 208 and the intake air frame body 229 after installation and fixation, so as to prevent sand and gravel from entering the interior of the intake air frame body 229 through the gap between the intake air frame body 229 and the primary filter inner frame 208.

[0035] AsFigure 4 As shown, a support plate 214 is welded inside the lower end of the primary filter inner frame 208. A plurality of holes 215 are formed in the support plate 214. A baffle 216 is bent upward at the rear end of the support plate 214. The baffle 216 blocks the sand and gravel that are blocked and fall on the support plate 214 to prevent them from moving inward along with the air flow, which may cause a large amount of sand and gravel to accumulate on the base 1, thus affecting the filtration of the filtration part 3. A discharge inclined plate 212 is welded inside the lower end of the primary filter inner frame 208. The discharge inclined plate 212 is located below the support plate 214. The rear end of the discharge inclined plate 212 extends upward obliquely. The rear end of the discharge inclined plate 212 extends out of the primary filter inner frame 208. First guard plates 213 are formed on both sides of the extended end of the discharge inclined plate 212. The blocked sand and gravel will fall downward through the holes 215 in the support plate 214 onto the discharge inclined plate 212, and then roll along the discharge inclined plate 212 to the front end of the filter, thus avoiding the accumulation of sand and gravel and affecting the air circulation.

[0036] As Figure 5 As shown, a plurality of folding members 219 are arranged at equal intervals along the length direction of the support plate 214 inside the primary filter inner frame 208. A flow channel with a folded structure is formed between adjacent two folding members 219. The lower end of the folding member 219 is placed on the support plate 214. An inner fixing frame 217 is installed inside the primary filter inner frame 208 by bolts. A plurality of leakage holes 218 are formed at the lower end of the inner fixing frame 217. The front end of the inner fixing frame 217 acts on the rear end of the folding member 219 to fix the folding member 219. The leakage holes 218 are located directly above the part where the discharge inclined plate 212 extends out of the primary filter inner frame 208. Among them, the folding member 219 has at least two V-shaped structures, and the openings of adjacent two V-shaped structures face in opposite directions. The folding member 219 has a plurality of concave structures. The V-shaped structure design can ensure the entry of air flow while blocking the entry of sand and gravel with larger particle sizes through its structure. When sand and gravel with larger particle sizes enter the flow channel along with the air flow, most of the sand and gravel will inevitably impact on the folding member 219, so that they lose the power to move along with the air flow and then fall downward. And through the provided concave structures, a swirling air flow will be formed in the concave structures when the air flow passes through, thus further promoting the sedimentation amount of sand and gravel.

[0037] The inner fixing frame 217 is installed at the rear end of the primary filter inner frame 208 by bolts. A plurality of leakage holes 218 are formed at the lower end of the inner fixing frame 217. The front end of the inner fixing frame 217 acts on the rear end of the folding member 219 to fix the folding member 219. The leakage holes 218 are located directly above the part where the discharge inclined plate 212 extends out of the primary filter inner frame 208. The inner fixing frame 217 plays a role in fixing the rear end of the folding member 219 to avoid the problem of the folding member 219 shaking.

[0038] In some embodiments, as Figure 6As shown in the figure, the specific structure of the folded part 219 is as follows. The folded part 219 includes a first folded plate 220. The rear end of the first folded plate 220 is welded with a second folded plate 223. The other end of the second folded plate 223 is welded with a third folded plate 226. After the first folded plate 220 and the second folded plate 223 are fixed, a first V-shaped structure is formed. After the second folded plate 223 and the third folded plate 226 are fixed, a second V-shaped structure is formed. The opening direction of the first V-shaped structure is opposite to that of the second V-shaped structure. The rear end of the first folded plate 220 is bent to form a first bent plate 222, and the first bent plate 222 is welded to the second folded plate 223. The front end of the second folded plate 223 is bent to form a second bent plate 224. The width direction of the second bent plate 224 is parallel to the width direction of the first folded plate 220, and the first folded plate 220 is located inside the second bent plate 224, so that a first concave structure is formed between the first folded plate 220 and the second bent plate 224. The rear end of the second folded plate 223 is bent to form a third bent plate 225, and the third bent plate 225 is welded to the third folded plate 226, and the bending direction of the third bent plate 225 is the same as that of the second bent plate 224. The front end of the third folded plate 226 is bent to form a fourth bent plate 227. The width direction of the fourth bent plate 227 is parallel to the width direction of the second folded plate 223. The fourth bent plate 227 is located outside the second folded plate 223, so that a second concave structure is formed between the second folded plate 223 and the fourth bent plate 227. When air passes through the first concave structure and the second concave structure, first, it will block a part of the sand and gravel, weakening the energy of the sand and gravel moving forward. Second, when the air flow passes through, a swirling air flow will be formed in the first concave structure and the second concave structure, thereby causing the sand and gravel in the air flow to settle and then be discharged.

[0039] Further preferably, in order to improve the stability of the fixation of the folded part 219, a plurality of horizontally arranged limiting strips 210 are installed at the front end of the primary filter inner frame 208. A plurality of front bayonets 211 with a V-shaped structure are formed at the rear side of the limiting strip 210. In addition, a plurality of rear bayonets with a V-shaped structure are formed at the front sides of the upper and lower ends of the inner fixing frame 217. The front end of the first folding plate 220 is bent to form a first inclined plate 221. The bending direction of the first inclined plate 221 is opposite to that of the first folding plate 220. There is an included angle between the width direction of the first inclined plate 221 and the width direction of the first folding plate 220, and the included angle is an acute angle. The front ends of the first inclined plate 221 and the first folding plate 220 are clamped in the front bayonets 211. The rear end of the third folding plate 226 is bent to form a second inclined plate 228. The width direction of the second inclined plate 228 is the same as the bending direction of the fourth bending plate 227. There is an included angle between the width direction of the second inclined plate 228 and the width direction of the third folding plate 226, and the included angle is an acute angle. The rear ends of the second inclined plate 228 and the third folding plate 226 are clamped in the rear bayonets. The settings of the first inclined plate 221 and the second inclined plate 228 first clamp them in the corresponding front bayonets 211 and rear bayonets to improve the stability of the fixation. Secondly, to a certain extent, they also reduce the resistance when air enters, so as to increase the air intake flux.

[0040] Referring to Figures 7 to 17 As shown, the filtering part 3 includes a rectangular frame 300 installed on the base 1 by bolts. The front end of the rectangular frame 300 is fixed to the rear ends of the bottom plate 200, the side plate 201 and the top plate 202 by bolts. A third inclined plate 303 is hermetically welded to the lower end inside the rectangular frame 300. The upper end of the third inclined plate 303 extends forward obliquely. The front end of the third inclined plate 303 extends out of the rectangular frame 300. Second guard plates 304 are bent at both sides of the front end of the third inclined plate 303. The inner ends of the second guard plates 304 are hermetically welded to the front end of the rectangular frame 300.

[0041] As Figure 9As shown, a fourth inclined plate 306 is hermetically welded to the lower end inside the rectangular frame 300. The upper end of the fourth inclined plate 306 extends forward obliquely. The front end of the fourth inclined plate 306 extends out of the front end of the rectangular frame 300. Third guard plates 307 are bent on both sides of the extended end of the fourth inclined plate 306. The inner ends of the third guard plates 307 are hermetically welded to the front end of the rectangular frame 300. The lower end of the third guard plate 307 is connected to a cover plate 319 through a second hinge 318. The cover plate 319 covers the upper end of the third inclined plate 303. A vertical plate 305 is hermetically welded to the lower end inside the rectangular frame 300. The third inclined plate 303 and the fourth inclined plate 306 are located on the projection plane of the vertical plate 305. The third inclined plate 303, the lower end inside the rectangular frame 300, and the vertical plate 305 enclose an oil storage tank. A drain pipe 301 is connected to the lower end of one side of the rectangular frame 300. An opening and closing valve 302 is connected to the drain pipe 301. The drain pipe 301 communicates with the oil storage tank. The oil storage tank formed by the third inclined plate 303, etc. is mainly to facilitate the operator to fish out the sand and gravel deposited in the oil storage tank, and the setting of the cover plate 319 can prevent the sand and gravel from directly entering the oil storage tank. In order to prevent the oil from being thrown out of the rectangular frame 300, the fourth inclined plate 306 is provided, and the collected oil can be drained downward into the oil storage tank. An observation window is provided at the lower end of one side of the rectangular frame 300. A transparent plate is hermetically fixed on the observation window to facilitate the observation of the turbidity of the oil in the oil storage tank. A drive cabinet 309 is installed on the upper end of one side of the rectangular frame 300 through bolts. A drive device is provided inside the drive cabinet 309. Setting the drive device inside the drive cabinet 309 can prevent the operation of the drive device from being affected by wind and sand.

[0042] As Figure 9 and Figure 10 shown, a rectangular skeleton 310 is installed inside the rectangular frame 300 through bolts. A cross bar 311 is welded inside the rectangular skeleton 310. A vertical support rod 313 is passed through the cross bar 311. The upper and lower ends of the vertical support rod 313 are welded to the upper and lower ends of the rectangular skeleton 310. Four diagonal support rods 312 are welded inside the rectangular skeleton 310. The diagonal support rods 312 can further improve the structural stability and strength of the rectangular skeleton 310. A plurality of pairs of concave parts 314 are welded to the front and rear sides of the rectangular frame 300 respectively. Horizontal bars 315 are fixed to the front and rear sides of the rectangular frame 300 through bolts respectively. A plurality of vertical guard rods 317 are provided inside the horizontal bars 315. A plurality of fixing screws 316 are welded to the vertical guard rods 317. The fixing screws 316 are fixed to the horizontal bars 315 through a pair of nuts.

[0043] As Figure 11 , Figure 12 and Figure 13As shown, support swivel seats 344 are respectively installed at the upper and lower ends of the rectangular frame 310 by bolts. A transmission shaft 343 is rotatably provided on the support swivel seats 344 at the same height. On the front and rear sides of the upper end of the rectangular frame 300, baffle plates 308 are respectively installed by bolts. The baffle plates 308 can prevent air from carrying sand and gravel from passing through the upper end of the rectangular frame 300. The transmission shaft 343 at the upper end is located within the baffle plate 308. The transmission shaft 343 at the upper end is connected to a driving device. A plurality of sprockets 345 are provided on the transmission shaft 343. The sprockets 345 in the same vertical direction are driven by a chain 349. The chain 349 is located within the concave member 314 to guide and limit the movement of the chain 349. The chain 349 is provided with curtain sheets 356 through a plurality of concave hooks 362. After the curtain sheets 356 are hung, they are in a stacked state, that is, after hanging, the adjacent two curtain sheets 356 are distributed inside and outside, and the lower end of the curtain sheet 356 located inside extends out of the curtain sheet 356 located outside. In this way, after hanging, two filter walls formed by the curtain sheets 356 will be formed. When air passes through the filter walls, sand, gravel or fine dust, etc. will be adsorbed and filtered by the oil on the curtain sheets 356. And the curtain sheets 356 will rotate with the chain 349. When the curtain sheets 356 pass through the oil storage tank, on the one hand, the oil will adhere to the curtain sheets 356, so as to ensure that there is sufficient oil on the curtain sheets 356 to adsorb sand and gravel. On the other hand, the curtain sheets 356 can also be cleaned by the oil, so as to wash off sand, fine dust, etc., so as to reduce the weight of the curtain sheets 356, thereby reducing energy consumption. A plurality of concave pits are formed on the curtain sheets 356. The setting of the concave pits can increase the area of oil adhesion, thereby enhancing the adsorption ability of the oil to sand and gravel. The upper end of the curtain sheet 356 is bent inward to form an L-shaped hanging plate 360. A plurality of hanging openings 361 are formed on the L-shaped hanging plate 360. The inner end of the concave hook 362 is inserted into the hanging opening 361. When hanging, the horizontal section of the concave hook 362 passes through the hanging opening 361. Specifically, as Figure 14 and Figure 15As shown, the horizontal section of the concave hook 362 is passed through the chain 349. The vertical section of the concave hook 362 is bent outward to form a hanging rod 363, and the hanging rod 363 is located inside the L-shaped hanging plate 360. A plurality of rectangular openings 358 are formed in the curtain sheet 356. The length direction of the rectangular opening 358 is perpendicular to the length direction of the curtain sheet 356, and the arrangement of the rectangular opening 358 facilitates the flow of air. A concave cover 357 is formed at the rectangular opening 358. The upper and lower ends of the concave cover 357 are in a triangular structure. There is an included angle between the width direction of the vertical section of the concave cover 357 and the length direction of the curtain sheet 356, and the included angle is an acute angle. More specifically, when the curtain sheets 356 are hung, the inclination directions of the concave covers 357 on two adjacent curtain sheets 356 are opposite. Through this assembly method, the filtering ability of the curtain sheets 356 for sand and gravel can be improved. The vertical guard bar 317 is located outside the curtain sheet 356. When the curtain sheet 356 is moving, it can correct the upturned part of the curtain sheet 356, so as to ensure the density of the curtain sheet 356, and thus ensure the filtering effect on sand and gravel in the air. And each chain 349 is located at the concave member 314 to prevent the chain 349 from contacting the internal structure.

[0044] As Figure 12 shown, the chain 349 includes multiple pairs of chain plates 351. Pins 359 are fixed at both ends of the chain plate 351. A sleeve 350 is rotatably arranged on the pin 359. The sleeve 350 is located between the chain plates 351. Two adjacent chain plates 351 are connected by the pin 359, and one pair of chain plates 351 is rotatably arranged on the pin 359. A strip-shaped groove 352 is formed on the chain plate 351. There is a notch 354 on the outer side of the chain plate 351, and the notch 354 communicates with the strip-shaped groove 352. Arc-shaped holes 353 are formed at both ends of the strip-shaped groove 352. The horizontal section of the concave hook 362 is passed through the arc-shaped hole 353. That is to say, each pair of chain plates 351 will carry two curtain sheets 356, so as to ensure that the curtain sheets 356 are arranged in a stacked manner on the chain 349. In addition, it should be noted that the notch 354 of the chain plate 351 needs to be bent inward by means of tools or knocking to prevent the problem that the concave hook 362 is disconnected from the chain plate 351, thereby improving the running stability. In order to adapt to the movement of the relatively long chain plate 351, convex portions 347 are formed on the outer circumference of the sprocket 345 in a circumferential array. A V-shaped groove 348 is formed on the convex portion 347. The distance between the convex portions 347 is equal to the distance between each pair of adjacent pins 359, and the sleeve 350 at the connection part of the chain 349 and the sprocket 345 is located in the V-shaped groove 348.

[0045] Considering that if the moving speed of the curtain sheet 356 is too fast, it is likely to generate a large amount of noise, and it is also easy to cause significant wear to the curtain sheet 356. In addition, since the curtain sheet 356 carries a large amount of oil, if the rotation speed is too fast, this oil will be thrown off from the curtain sheet 356, thereby reducing the adsorption capacity of the curtain sheet 356 for fine dust in the air. Moreover, the thrown-off oil will move along with the air, which will first lead to an increase in the oil consumption, and secondly, due to the large amount of oil entering, it will affect the operation of related equipment. Therefore, it is necessary to reasonably control the moving speeds of the chain 349 and the curtain sheet 356. Generally, for the chain 349 to make one revolution, it is approximately controlled within 20 hours. If only conventional driving devices such as motors are used, the above problems will occur due to the too-fast rotation speed. The structure of the driving device adopted in this embodiment is described as follows.

[0046] As Figure 16 and Figure 17 and in combination with Figure 8 shown, the driving device includes a fixed seat 321 welded to one side of the rectangular frame 300. A concave seat 322 is fixed on the fixed seat 321 by bolts. The inner end of the concave seat 322 is rotatably provided with a motor fixing seat 323 through a rotating pin. A motor 326 is installed on the motor fixing seat 323 by bolts. A plurality of strip-shaped holes 324 are formed in the motor fixing seat 323. A plurality of screw rods 325 are welded to the upper wall of the concave seat 322. The screw rods 325 pass through the strip-shaped holes 324. A pair of nuts are provided on the screw rods 325. The nuts are located on the upper and lower sides of the motor fixing seat 323, and the nuts are used for fixing the motor fixing seat 323. A driving pulley 327 is connected to the output shaft of the motor 326. When adjusting the height of the motor 326 to ensure the transmission effect of the motor 326, during debugging, the motor fixing seat 323 can be rotated. When the appropriate output efficiency is reached, the rotation angle of the motor fixing seat 323 can be locked by the nuts.

[0047] On one side of the rectangular frame 300, a reducer fixing seat 330 is welded. The reducer fixing seat 330 is located directly above the motor fixing seat 323. A reducer 331 is installed on the reducer fixing seat 330 by bolts. A driven pulley 329 is connected to the input shaft of the reducer 331. The driven pulley 329 and the driving pulley 327 are driven by a belt 328. An eccentric wheel 333 is eccentrically provided on the output shaft 332 of the reducer 331. An eccentric shaft 334 is eccentrically provided on the eccentric wheel 333. A swing arm 335 is rotatably provided on the eccentric shaft 334. A connecting shaft 336 is provided at the other end of the swing arm 335. A connecting arm 337 is rotatably provided on the connecting shaft 336. A rotating inner shaft 338 is provided at the other end of the connecting arm 337. A rotating inner seat 342 is rotatably provided at the inner side end of the rotating inner shaft 338. The rotating inner seat 342 is connected and fixed to one end of a transmission shaft 343 located at the upper end. The rotating inner seat 342 is rotatably provided on the side wall of the rectangular frame 300. A ratchet 364 is installed on the rotating inner seat 342 by bolts. The rotating inner shaft 338 is rotatably provided on the ratchet 364. A moving pawl 339 is rotatably provided on the connecting shaft 336. The other end of the moving pawl 339 acts on the teeth of the ratchet 364 to drive the ratchet 364 to rotate. A tension spring is hung on the connecting arm 337. The other end of the tension spring is hung on the moving pawl 339. Of course, a torsion spring can also be sleeved and fixed on the connecting shaft 336. The other end of the torsion spring is connected to the moving pawl 339. Whether it is a tension spring or a torsion spring, it is to ensure the connection stability between the moving pawl 339 and the ratchet 364. A fixed pin 340 is also fixed on one side of the rectangular frame 300. A fixed pawl 341 is rotatably provided at the outer side end of the fixed pin 340. The other end of the fixed pawl 341 acts on the teeth of the ratchet 364 to lock the rotating state of the ratchet 364. When the fixed pawl 341 locks, it relies on its own gravity.

[0048] As Figure 7 and Figure 18 shown, the connecting part 4 includes a tapered frame 40 fixed to the rear end of the rectangular frame 300 by bolts. The opening size at the front end of the tapered frame 40 is larger than that at the rear end. A second inspection opening is provided on the tapered wall of the tapered frame 40. A second opening and closing door 41 is connected to the second inspection opening by a hinge. A second bolt 42 is provided on the second opening and closing door 41. The second bolt 42 has the same structure as the first bolt 205. When the second bolt 42 is connected to the tapered frame 40, the second opening and closing door 41 is in a closed state. When the connection between the second bolt 42 and the tapered frame 40 is cancelled, the second opening and closing door 41 is in an open state. Through the second inspection opening, it is convenient to check the operation conditions of the tapered frame 40 and the curtain sheet 356.

[0049] As Figure 19 and Figure 20As shown, the muffler 5 includes a support frame 50 installed on the base 1 by bolts, a delivery pipe 51 is installed on the upper end of the support frame 50 by bolts, the front end of the delivery pipe 51 is installed on the rear end of the conical frame 40 by bolts, and a plurality of vertical members 52 are arranged in the delivery pipe 51, the front end of the vertical member 52 has an arc surface 54 to reduce the resistance when the air enters, and the rear end of the vertical member 52 has a wedge structure 53 to expand the space when the air flows out. When reducing noise, since the air flows backward from the front end of the conical frame 40, when the air enters the delivery pipe 51, the air will move from the large space to the small space, and then enter the large space again at the rear end of the delivery pipe 51, so that the propagation of noise can be reduced by resistance.

[0050] When the primary filter 2 and the filter 3 on the oil bath type air intake filter are inspected, the locking state of the first opening and closing door 204 and the second opening and closing door 41 by the first bolt 205 and the second bolt 42 can be cancelled, and the first opening and closing door 204 or the second opening and closing door 41 can be opened to inspect the primary filter 2 and the filter 3. If it is necessary to scrape out the solid impurities in the oil in the oil storage tank in the filter 3, the cover plate 319 can be opened and the oil storage tank can be cleaned. If it is observed from the observation window that there are many impurities in the oil, the opening and closing valve 302 can be opened and the oil can be completely discharged from the oil drain pipe 301, and then the opening and closing valve 302 can be closed, and the oil can be re-injected into the oil storage tank.

[0051] The principle of air filtration by this oil-bath type intake air filter is as follows: Air flows backward through the flow channels formed by multiple folded members 219. During the flow process, most of the sand and gravel will be blocked by the folded members 219, hindering their movement, and then fall downward onto the support plate 214, and fall through the holes 215 on the support plate 214 to the discharge inclined plate 212, and are discharged from the front end of the discharge inclined plate 212. When part of the sand and gravel moves backward with the air flow and passes through the concave structure, a swirling flow will be formed within the concave structure, thereby blocking this part of the sand and gravel, and then this part will also be discharged from the discharge inclined plate 212. Then the air enters the rectangular frame 300. When the air enters the rectangular frame 300, part of the sand and gravel will first be adsorbed by the oil on the filter wall formed by the lamination of the curtain sheets 356 located on the front side, and the air will flow through the rectangular openings 358 on the curtain sheets 356 to the filter wall on the other side. When the air contacts the filter wall on this side, it will be adsorbed by the oil thereon. In this way, through the pre-physical filtration and adsorption, the sand and dust in the air, etc. will be greatly reduced. Then the air will enter the conveying pipe 51 through the conical frame 40, and the noise will be reduced when the air passes through the vertical member 52. Finally, the air enters the diesel gas turbine to participate in the operation of the diesel gas turbine. Adopting the above method, firstly, since only the oil needs to be replaced during the filtration process, the cost required for filtration is reduced, and the use of the oil will not affect the operation of the diesel gas turbine. Moreover, the continuous cleaning of the curtain sheets 356 by the oil can prevent the adsorption of sand and gravel and reduce the air flux. Secondly, the ultra-fine dust in the air, etc. can be adsorbed by the oil adsorption method, thereby significantly reducing the content of solid particles in the air. Thirdly, the service life is greatly extended, and inconvenience to production and life is avoided. Fourthly, noise reduction can also be achieved.

[0052] When the oil bath type intake filter cleans the curtain sheets 356 through the oil in the oil storage tank: the motor 326 starts, and drives the driving pulley 327 to rotate under the drive of the motor 326. The rotation of the driving pulley 327 will drive the driven pulley 329 to rotate through the belt 328. The rotation of the driven pulley 329 will drive the input shaft on the speed reducer 331 to rotate. The rotation of the input shaft on the speed reducer 331 will drive the output shaft 332 to rotate. The rotation of the output shaft 332 will drive the eccentric wheel 333 to rotate axially around the output shaft 332. The rotation of the eccentric wheel 333 will drive the eccentric shaft 334 to rotate axially around the output shaft 332. The rotation of the eccentric shaft 334 will drive the swing arm 335 to swing. The swing of the swing arm 335 will drive the moving pawl 339 to rotate. When the moving pawl 339 rotates, its inner end will act on the teeth of the ratchet wheel 364 to cause the ratchet wheel 364 to rotate. When the moving pawl 339 drives the ratchet wheel 364 to rotate, the fixed pawl 341 will be disengaged from the connection with the ratchet wheel 364. When the moving pawl 339 resumes movement, the fixed pawl 341 will lock the state of the ratchet wheel 364. When the ratchet wheel 364 rotates, it will drive the transmission shaft 343 and the sprocket 345 thereon to rotate. The rotation of the sprocket 345 will drive the chain 349 and the curtain sheets 356 connected thereto to operate. When the curtain sheets 356 rotate, some of the curtain sheets 356 will be immersed in the oil, and the oil in the oil storage tank will adhere to the curtain sheets 356. At the same time, the dust adhered to the curtain sheets 356 can also be cleaned to reduce the weight of the curtain sheets 356, thereby reducing energy consumption. The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and its equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. An oil bath air intake filter, characterized in that: The base (1) comprises a primary filter portion (2) provided at the front end of the base (1), the primary filter portion (2) being connected to a filter portion (3) at the rear end thereof, the filter portion (3) being connected to a connection portion (4) at the rear end thereof, the connection portion (4) being connected to a silencer portion (5), the silencer portion (5) being connected to a connection pipe head (6), and the filter portion (3) and the silencer portion (5) being fixed to the base (1); The primary filter (2) filters the sand and gravel entering the air flow inside it; The filter unit (3) filters sand and gravel in the air flow by means of oil adhesion; The connecting pipe head (6) is connected to the fuel oil turbine to supply the fuel oil turbine with oxygen required for combustion.

2. The oil bath type air intake filter according to claim 1, characterized in that: The primary filter portion (2) comprises an air intake frame (229), the front end of the air intake frame (229) being provided with a primary filter inner frame (208), a support plate (214) being welded to the interior of the lower end of the primary filter inner frame (208), a plurality of holes (215) being provided on the support plate (214), a baffle plate (216) being bent upward at the rear end of the support plate (214), a discharge inclined plate (212) being welded to the interior of the lower end of the primary filter inner frame (208), the discharge inclined plate (212) being located below the support plate (214), the rear end of the discharge inclined plate (212) extending upward at an angle, the rear end of the discharge inclined plate (212) extending out of the primary filter inner frame (208), and first guard plates (213) being formed on both sides of the extended end of the discharge inclined plate (212); A plurality of folding pieces (219) are arranged in an array at equal intervals inside the primary filter inner frame (208) along the length direction of the support plate (214), a flow channel with a folded structure is formed between two adjacent folding pieces (219), and the lower end of the folding piece (219) is placed on the support plate (214); The rear end of the primary filter inner frame (208) is mounted with an inner fixing frame (217) by means of bolts, a plurality of leakage holes (218) are provided at the lower end of the inner fixing frame (217), the front end of the inner fixing frame (217) acts on the rear end of the folding piece (219) to fix the folding piece (219), and the leakage holes (218) are located directly above the discharge inclined plate (212) extending out of the primary filter inner frame (208).

3. The oil bath type air intake filter according to claim 2, characterized in that: The folding piece (219) has at least two V-shaped structures, and the openings of two adjacent V-shaped structures face in opposite directions. The folding piece (219) has a plurality of concave structures.

4. The oil bath type air intake filter according to claim 2, characterized in that: The front end of the folding piece (219) has a first inclined plate (221), and the rear end of the folding piece (219) has a second inclined plate (228); A plurality of horizontally arranged limit bars (210) are installed at the front end of the primary filter inner frame (208); a plurality of V-shaped front snap-in openings (211) are provided at the rear side of the limit bars (210); and the first inclined plate (221) is inserted into the front snap-in openings (211); A plurality of rear snap-in openings in a V-shaped structure are provided on the front sides of the upper and lower ends of the inner fixing frame (217), and the second inclined plate (228) is snap-fitted into the rear snap-in openings.

5. The oil bath type air intake filter according to claim 2, characterized in that: The filter unit (3) comprises a rectangular frame (300) mounted on the base (1) by means of bolts, the front end of the rectangular frame (300) being fixed to the rear end of the air intake frame (229) by means of bolts, the lower end of the interior of the rectangular frame (300) being provided with an oil storage tank, the oil storage tank being filled with oil, the lower end of one side of the rectangular frame (300) being connected with an oil drain pipe (301), the oil drain pipe (301) being connected with an opening and closing valve (302), the oil drain pipe (301) being connected with the oil storage tank, and the upper end of the oil storage tank being provided with a rotatably arranged cover plate (319); A drive cabinet (309) is installed on the upper end of one side of the rectangular frame (300) by means of bolts, and a drive device is arranged in the drive cabinet (309); A rectangular frame (310) is installed inside the rectangular frame (300) by bolts, and support swivel seats (344) are installed at the upper and lower ends of the rectangular frame (310) by bolts respectively, and a transmission shaft (343) is rotatably provided on the support swivel seats (344) located at the same height, and the transmission shaft (343) located at the upper end is connected to the driving device, and a plurality of sprocket wheels (345) are provided on the transmission shaft (343), and each pair of sprocket wheels (345) located in the same vertical direction are driven by a chain (349), and the chain (349) is hung with curtain pieces (356) through a plurality of concave hooks (362); An L-shaped hanging plate (360) is bent inwardly at the upper end of the curtain piece (356), a plurality of hanging openings (361) are provided on the L-shaped hanging plate (360), the inner side ends of the concave hooks (362) are inserted into the hanging openings (361), and a plurality of rectangular openings (358) are provided on the curtain piece (356).

6. The oil bath type air intake filter according to claim 5, characterized in that: A concave cover (357) is formed at the rectangular opening (358), and the upper and lower ends of the concave cover (357) are triangular structures. An angle is formed between the width direction of the vertical section of the concave cover (357) and the length direction of the curtain sheet (356), and the angle is an acute angle.

7. The oil bath type air intake filter according to claim 5, characterized in that: A plurality of recesses are formed on the curtain piece (356).

8. The oil bath type air intake filter according to claim 5, characterized in that: The horizontal section of the concave hook (362) is passed through the chain (349), and the vertical section of the concave hook (362) is bent outward to form a hanging rod (363), which is located inside the L-shaped hanging plate (360).

9. The oil bath type air intake filter according to claim 5, characterized in that: The chain (349) comprises a plurality of pairs of chain plates (351), each pair of chain plates (351) being connected end to end, a pin shaft (359) being fixed at both ends of the chain plates (351), a sleeve (350) being rotatably provided on the pin shaft (359), the sleeve (350) being located between the chain plates (351), two adjacent chain plates (351) being connected via the pin shaft (359), and one pair of chain plates (351) being rotatably provided on the pin shaft (359), a strip groove (352) being formed on the chain plate (351), a notch (354) being provided on the outer side of the chain plate (351), the notch (354) being communicated with the strip groove (352), arc-shaped holes (353) being formed at both ends of the strip groove (352), and a transverse section of a concave hook (362) being passed through the arc-shaped hole (353); The sprocket (345) has convex portions (347) formed in a circumferential array on its outer periphery. The convex portions (347) are provided with V-shaped grooves (348). The spacing between the convex portions (347) is equal to the spacing between each pair of adjacent pin shafts (359). The sleeve (350) at the connection portion between the chain (349) and the sprocket (345) is located in the V-shaped groove (348).

10. The oil bath type air intake filter according to claim 5, characterized in that: The connecting portion (4) comprises a conical frame (40) fixed to the rear end of the rectangular frame (300) by bolts, the opening size of the front end of the conical frame (40) is larger than the opening size of the rear end thereof, a second inspection opening is provided on the conical wall of the conical frame (40), a second opening and closing door (41) is connected to the second inspection opening by a hinge, a second bolt (42) is provided on the second opening and closing door (41), when the second bolt (42) is connected to the conical frame (40), the second opening and closing door (41) is in a closed state, and when the second bolt (42) is disconnected from the conical frame (40), the second opening and closing door (41) is in an open state; The muffler (5) comprises a support frame (50) mounted on a base (1) by means of bolts, a delivery pipe (51) being mounted on the upper end of the support frame (50) by means of bolts, a front end of the delivery pipe (51) being mounted on the rear end of the conical frame (40) by means of bolts, a plurality of vertical members (52) being arranged in the delivery pipe (51), a front end of the vertical member (52) having an arcuate surface (54), and a rear end of the vertical member (52) having a wedge-shaped structure (53).

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