Centrifugal fan for new energy gas supply system of steamship

Abstract

The utility model provides a centrifugal fan for a new energy gas supply system of a steamship, which comprises a shell, a base is arranged in the shell, the base is mounted in the shell through a grounding bolt, a quick-mounting frame is mounted on the top end face of the base, two groups of fans are fixedly mounted on the quick-mounting frame through fastening screws and are driven by a driving system, and the two groups of fans are mounted on the quick-mounting frame through fastening screws. A driving shaft of the driving system is connected with an impeller shaft through a bearing assembly, an impeller is arranged on the impeller shaft, at least one set of blades are arranged on the impeller, and the blades are evenly distributed in the circumferential direction of the impeller. And at least one group of air deflectors are arranged on the inner wall of the shell of the fan. The device is compact in structure and convenient to install and arrange on a ship. And the two sets of connecting pieces are additionally arranged, so that the two sets of fans are connected, redundant gas in the pipeline can be effectively pumped away through the two sets of fans, and normal operation of the ship engine is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the centrifugal fan technical field for ship, especially relate to centrifugal fan for steamship new energy gas supply system. BACKGROUND

[0002] The existing centrifugal fan for steamship new energy gas supply system includes impeller, casing, air inlet, air outlet, motor, air current is sucked from the air inlet through the rotation of the impeller, and the air current is thrown outwards through centrifugal force, and wind pressure is generated.

[0003] The existing centrifugal fan lacks a guide, so that the wind speed entering its inside from the air inlet cannot be kept consistent, and the uneven air flow causes the impeller to generate higher load in some areas and lower load in other areas, increasing aerodynamic loss and thus reducing the overall working efficiency of the fan.

[0004] Therefore, how to solve the defects in the above technical solutions has become one of the problems to be solved in the technical field of centrifugal fans for ships. INVENTION CONTENTS

[0005] In view of the problems in the background art, the utility model provides a centrifugal fan for steamship new energy gas supply system, which includes a casing, a base is arranged in the casing, the base is installed in the casing through grounding bolts, a quick mounting frame is installed on the top end face of the base, two groups of fans are fixedly installed on the quick mounting frame through fastening screws, and the fans are driven by a driving system, a driving shaft of the driving system is connected to an impeller shaft through a bearing assembly, an impeller is arranged on the impeller shaft, at least one group of blades is arranged on the impeller, and the blades are uniformly distributed along the circumference of the impeller, and at least one group of air guide plates is arranged on the inner wall of the casing of the fan.

[0006] Optionally, the air guide plates are arranged in an arc shape, the tangent lines of the maximum convex end portions of the adjacent two groups of air guide plates continuously extend, and the tangent lines intersect to form an included angle c, the included angle c is 131° or 134 or 137°.

[0007] Optionally, the center lines of the adjacent two groups of blades continuously extend, and the center lines intersect to form an included angle a, and a is preferably 87°.

[0008] The blades are arranged in an arc shape as a whole, and the spacing of the first interval of the adjacent two groups of blades is L1, and L1 is 10-60 mm.

[0009] The spacing of the second interval of the adjacent two groups of blades is L2, and L2 is 7-32 mm.

[0010] The spacing of the third interval of the adjacent two groups of blades is L3, and L3 is 3-11 mm.

[0011] And L3 < L2 < L1.

[0012] Optionally, the air inlets of the two groups of fans are connected through a second connecting piece, and the second connecting piece is provided with a gas inlet;

[0013] The air outlets of the two groups of fans are connected with air pipes, and the air pipes are installed on the connecting plates arranged in the cabinet through U-shaped bolts; a manual check valve is installed on the air pipes, the two air pipes are connected through a first connecting piece, and the first connecting piece is provided with a gas outlet.

[0014] Optionally, a protective net is installed at the position of the gas outlet, the air pipe close to the position of the manual check valve has a variable-diameter end portion, and the variable-diameter end portion is arranged in a horn shape; and the air pipe away from the position of the manual check valve has a curved end portion.

[0015] Therefore, the centrifugal fan for the ship new energy gas supply system has the advantages that:

[0016] (1) The centrifugal fan for the ship new energy gas supply system has a small matching gap between the impeller and the cabinet, so that the air pressure can be improved, and the pressure of the impeller can be improved at the same time; and the blades are matched, the blades are arranged in an arc shape as a whole, the air volume is reduced, and the characteristics of low air volume and high air pressure of the fan are met.

[0017] (2) The centrifugal fan for the ship new energy gas supply system has a gradually decreasing spacing between the adjacent two groups of blades, the shape of the blades can be adjusted by controlling the spacing in different intervals, when L3 < L2 < L1, and through simulation simulation test, when the air speed tends to be consistent, the air can be guided by adjusting the arc shape of the blades, and the air speed of the air inlet can be ensured to tend to be consistent when the angle c of the air deflector is 137°.

[0018] (3) The centrifugal fan for the ship new energy gas supply system has a compact structure, is convenient to install and layout on a ship, and through the two connecting pieces, the two groups of fans are connected, so that the two groups of fans can effectively extract the redundant gas in the pipeline, and the normal operation of the ship engine is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an overall structure schematic view of an embodiment of the centrifugal fan for the ship new energy gas supply system.

[0020] Figure 2 It is another direction structure schematic view of the embodiment of the centrifugal fan for the ship new energy gas supply system.

[0021] Figure 3 It is another direction structure schematic view of the embodiment of the centrifugal fan for the ship new energy gas supply system. Figure 2 It is another direction structure schematic view of the embodiment of the centrifugal fan for the ship new energy gas supply system.

[0022] Figure 4Part structure schematic view of one embodiment of the centrifugal fan for the new energy gas supply system of the ship.

[0023] Reference signs:

[0024] 1, base; 2, fan; 021, blade; 022, air deflector; 023, impeller shaft; 4, first connecting piece; 5, second connecting piece; 6, manual check valve; 7, variable diameter end of air pipe; 8, curved end; 9, air pipe; 10, U-shaped bolt; 11, protective net; 12, gas outlet; 13, gas inlet; 14, driving system; 16, quick mounting frame. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will make further detailed description to the utility model combining with the drawings and specific embodiments. Although the example embodiments are disclosed in the drawings, it should be understood that the utility model can be realized in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to facilitate a thorough understanding of the utility model and to convey the complete concept of the utility model to those skilled in the art.

[0026] In the description of the present application, the description of the terms "some embodiments", "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or features of the embodiments or examples described in the present application without contradiction.

[0027] In the present application, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "a plurality of" means two or more, unless otherwise explicitly limited. The terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral connection; "connection" can be direct connection, or indirect connection through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] As Figures 1-3As shown, the embodiment provides a centrifugal fan for a new energy supply system of a ship, a base 1 is arranged in the casing, and the base 1 is installed in the casing through grounding bolts, and a quick mounting frame 16 is installed on the top end face of the base 1, and two groups of fans 2 are fixedly installed on the quick mounting frame 16 through fastening screws;

[0029] The fan 2 is arranged in the casing and is driven by a driving system 14, the driving shaft of the driving system 14 is connected with an impeller shaft 023 through a bearing assembly, and an impeller is arranged on the impeller shaft 023, and the impeller is detachably connected with the impeller shaft 023; the cooperation gap between the impeller and the casing is small, at least one group of blades 021 is arranged on the impeller, and the blades 021 are uniformly distributed along the circumference of the impeller; at least one group of air guide plates 022 is arranged on the inner wall of the casing of the fan 2, the air guide plates 022 are arranged in an arc shape, and the tangent lines of the maximum convex end portions of the adjacent two groups of air guide plates 022 continuously extend and intersect to form an included angle c, the included angle c is 131°, 134° or 137°; the air guide plates can guide the gas to be concentrated and guided inward.

[0030] The cooperation gap between the impeller and the casing of the embodiment is small, so that the wind pressure can be improved, and the pressure of the impeller is improved at the same time, and the blades 021 are matched, the blades 021 are arranged in an arc shape as a whole, the air volume is reduced, and the characteristics of low air volume and high wind pressure of the fan are met.

[0031] Further, the center lines of the adjacent two groups of blades 021 continuously extend and intersect to form an included angle a, and a is 40°-135°, preferably 87°;

[0032] The blades 021 are arranged in an arc shape as a whole, and the spacing of the first interval of the adjacent two groups of blades is L1, and L1 is 10-60mm;

[0033] The spacing of the second interval of the adjacent two groups of blades is L2, and L2 is 7-32mm;

[0034] The spacing of the third interval of the adjacent two groups of blades is L3, and L3 is 3-11mm;

[0035] And L3 < L2 < L1

[0036] The spacing between the adjacent two groups of blades decreases from large to small, by controlling the spacing of different intervals, the shape of the blades can be adjusted, when L3 < L2 < L1, through simulation simulation test, when the wind speed tends to be consistent, the arc shape of the blades can be adjusted to guide the air, and the air guide plates are used at the same time, and when the angle c of the air guide plates is 137°, the wind speed of the air inlet can be ensured to tend to be consistent.

[0037] Further, the air inlets of the two groups of fans 2 are connected through the second connecting piece 5, and the second connecting piece 5 is provided with a gas inlet 12 for sucking external gas;

[0038] The air outlets of the two groups of fans 2 are connected with air pipes 9, and the air pipes 9 are provided with manual check valves 6, and the air pipes 9 are installed on the connecting plates arranged in the cabinet through U-shaped bolts 10; the two groups of air pipes 9 are connected through the first connecting piece 4, the first connecting piece 4 is provided with a gas outlet 12, and the gas outlet 12 is provided with a protective net 11; the first connecting piece 4 and the second connecting piece 5 are all three-way connecting pieces; the air pipe 9 near the manual check valve 6 is provided with an air pipe reducing end 7, and the air pipe reducing end 7 is provided in a horn shape; the air pipe 9 far from the manual check valve 6 is provided with a curved end 8.

[0039] The utility model discloses the interval between two groups of adjacent blades of fan is from big to small, through the control of different interval interval, just can adjust the shape of blade, when L3L2L1, through simulation test, when the wind speed tends to be consistent, through the adjustment of the arc of blade, just can guide air, and cooperate with the use of air deflector, when the air deflector angle c is 137 DEG, can ensure that the wind speed of air inlet tends to be consistent.

[0040] The utility model discloses compact structure, convenient for installation and layout on the ship. And through adding two groups of connecting pieces (first connecting piece and second connecting piece) make two groups of fans be connected, and then utilize two groups of fans to can effectively remove the redundant gas in the pipeline, ensure the normal operation of ship engine.

[0041] Finally, it should be noted that the above examples are used to illustrate the technical solutions of the utility model, but are not limiting. Although the utility model is described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the utility model, and they should be covered in the scope of the claims of the utility model.

Claims

1. A centrifugal fan for a new energy gas supply system of a ship, characterized in that, The utility model relates to a centrifugal fan for new energy supply system of ship, including casing, be provided with base in casing, and the base is installed in casing through ground bolt, and the top end surface of base is equipped with quick -mounting frame, and two groups of fan are installed on quick -mounting frame, and are driven by drive system, the driving shaft of drive system is connected impeller shaft through bearing assembly, and the impeller shaft is provided with impeller, and the cooperation gap of impeller with casing is small, and at least one group of blades is provided on impeller, and the blade is evenly distributed along the circumference of impeller, at least one group of air deflector is arranged on the inner wall of the casing of fan.

2. The centrifugal fan for new energy supply system of ship according to claim 1, wherein, The air deflector is arranged in an arc shape, and the tangent lines of the maximum convex end portions of the adjacent two groups of air deflectors continuously extend and intersect to form an included angle c, and the included angle c is 131° or 134 or 137°.

3. The centrifugal fan for new energy supply system of ship according to claim 2, wherein, The center lines of the adjacent two groups of blades continuously extend and intersect to form an included angle a, and a is 87°; The blades are arranged in an arc shape as a whole, and the spacing of the first interval of the adjacent two groups of blades is L1, and L1 is 10-60 mm; The spacing of the second interval of the adjacent two groups of blades is L2, and L2 is 7-32 mm; The spacing of the third interval of the adjacent two groups of blades is L3, and L3 is 3-11 mm; And L3 < L2 < L1.

4. The centrifugal fan for new energy supply system of ship according to claim 1, wherein, The air inlets of the two groups of fans are connected in communication through a second connecting piece, and the second connecting piece is provided with a gas inlet; The air outlets of the two groups of fans are connected in communication with an air pipe, and the air pipe is installed on a connecting plate provided in the casing through a U-shaped bolt; a manual check valve is installed on the air pipe, the two air pipes are connected through a first connecting piece, and the first connecting piece has a gas outlet.

5. The centrifugal fan for new energy supply system of ship according to claim 4, wherein, A protective net is installed at the position of the gas outlet, the air pipe close to the position of the manual check valve has a variable-diameter end portion, and the variable-diameter end portion is arranged in a trumpet shape, and the air pipe away from the position of the manual check valve has a curved end portion.

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