CN210829785U - Marine high-temperature-resistant explosion-proof axial flow fan - Google Patents
Marine high-temperature-resistant explosion-proof axial flow fan Download PDFInfo
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- CN210829785U CN210829785U CN201921994982.5U CN201921994982U CN210829785U CN 210829785 U CN210829785 U CN 210829785U CN 201921994982 U CN201921994982 U CN 201921994982U CN 210829785 U CN210829785 U CN 210829785U
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Abstract
The utility model relates to a high temperature resistant explosion-proof axial flow fan for a ship, which comprises a fan shell, an impeller and an explosion-proof motor; one end of the fan shell is an air inlet, the other end of the fan shell is an air outlet, the impeller is arranged close to the air inlet, and the impeller is fixedly connected to a motor shaft of the explosion-proof motor; the explosion-proof motor is arranged in the middle of the fan shell, and a high-temperature isolation cover is arranged on the outer side of the explosion-proof motor; a motor mounting plate is arranged on the fan shell between the explosion-proof motor and the impeller, and a first heat insulation plate is arranged between the motor mounting plate and the explosion-proof motor; the high-temperature heat shield is fixedly connected with the motor mounting plate; the explosion-proof motor adopts a double-flange structure, and the first flange is fixed on the motor mounting plate; the motor shaft extends outwards through the motor body, and the tail end of the motor shaft is connected with a cooling fan; the upper part of the explosion-proof motor is provided with a wiring box; the middle of the upper portion of the fan shell is provided with a wiring area, and the wiring box is arranged in the wiring area. The utility model has the advantages of, the thermal transmission that blocks that can be better through the setting of heat insulating board.
Description
Technical Field
The utility model relates to a boats and ships air pumping installations field, especially a marine high temperature resistant explosion-proof axial fan.
Background
In the process of ship navigation, a large amount of tail gas and heat can be generated by the high-power diesel engine, the generator and the like in the engine room doing work, most of the tail gas can be discharged after being purified by the tail gas treatment device, but part of the tail gas can be diffused into the engine room, and meanwhile, the heat can be diffused outwards along with the shells of the diesel engine, the generator and the like and a tail gas discharge channel and the like; the tail gas not only contains a large amount of nitrogen oxide, carbon monoxide and other compounds which are not fully combusted by heavy oil, but also can contain oil mist, so that the tail gas not only pollutes air, but also is inflammable and explosive, and harms the life safety of crews and the normal use of engine room equipment, therefore, a reliable high-temperature-resistant explosion-proof fan must be adopted to discharge the tail gas and heat in the engine room in time.
The research on the anti-explosion fan mainly refers to the research on anti-explosion materials, for example, an anti-explosion motor is adopted, and impellers and housings of the fan are made of the anti-explosion materials (for example, aluminum blades or high-performance fiber blades are adopted), so that the anti-explosion materials below the domestic class II anti-explosion grade are mature at present, and therefore, a great deal of research on the high-temperature resistant anti-explosion axial flow fan for the ship is focused on the design of the high-temperature resistant structure. For example, chinese utility model patent: an axial flow fan disclosed by a high-temperature resistant axial flow fan (No. CN207554379U) applied to a ship desulfurization system comprises a fan shell, axial flow fan blades, a high-temperature resistant bearing and a cold water pipe; the axial flow fan blades are coaxially arranged at the front end in the fan shell, and a rotating shaft is inserted in the middle of the axial flow fan blades; two high temperature resistant bearings are sleeved in the middle of the rotating shaft; a cross-shaped axis support is fixedly arranged at the outer sides of the two high-temperature resistant bearings; the rear end of the rotating shaft is sleeved with a worm wheel, and the upper end of the worm wheel is provided with a worm; the worm wheel is meshed with the worm; the worm wheel and the worm are both arranged inside the lubricating oil shell; the lubricating oil shell is wrapped with an insulating layer; the cold water pipe is coiled in the insulating layer; two ends of the cold water pipe penetrate out of the fan shell to form a water inlet and a water outlet of the cold water pipe respectively, and the temperature inside the insulating layer is reduced by injecting cold water into the cold water pipe; this kind of structure adopts cold water to reduce the temperature of rotation axis and high temperature resistant bearing, can cool down to the fan is inside, but this kind of structure relies on the cooling water to cool down, adopts worm gear to be connected to and drives the axial compressor fan blade rotation on the engine output shaft simultaneously, and is very high to the dependency of external structure, and the structure is also complicated relatively, is unfavorable for using widely.
The other structure is as the Chinese invention patent application: a silencing type fire-fighting high-temperature smoke-discharging axial flow fan (application publication number: CN106762720A) comprises a fan outer cylinder consisting of a fan air inlet and a fan shell, an impeller and a motor which are arranged in the fan outer cylinder, wherein an inner cylinder is arranged outside the motor and is connected with the fan outer cylinder through a flange, an air inlet is arranged on the side surface of the fan shell, an air outlet is arranged on the inner cylinder, the air inlet is connected with the air outlet through a pipeline, a cooling impeller is arranged at the rear end of the motor, silencing material layers are arranged on the air inlet of the fan outer cylinder and the inner wall of the inner cylinder, and are made of ultramicro-pore plate materials, so that the axial flow fan is good in silencing and damping effects, and the; however, a large heat circulation space still exists between the impeller and the motor with the structure, and the heat dissipation effect is difficult to be effectively guaranteed.
Therefore, further improvement is required for the high temperature resistant explosion-proof axial flow fan for the ship.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a marine high temperature resistant explosion-proof axial fan can carry out effective high temperature isolation to explosion-proof machine and carry out air cooling, improves explosion-proof machine's life, ensures the good operating mode of explosion-proof machine work.
In order to achieve the purpose of the utility model, the high temperature resistant explosion-proof axial flow fan for the ship is provided, which comprises a fan shell, an impeller and an explosion-proof motor; the fan shell is cylindrical, one end of the fan shell is an air inlet, the other end of the fan shell is an air outlet, the impeller is arranged close to the air inlet, and the impeller is fixedly connected to a motor shaft of the explosion-proof motor;
the explosion-proof motor is arranged in the middle of the fan shell, a high-temperature isolation cover is arranged on the outer side of the explosion-proof motor and fixed inside the fan shell, the length of the high-temperature isolation cover is smaller than that of the fan shell, and the diameter of the high-temperature isolation cover is smaller than that of the fan shell;
a motor mounting plate is arranged on a fan shell between the explosion-proof motor and the impeller, the explosion-proof motor is mounted on the motor mounting plate, and a first heat insulation plate is arranged between the motor mounting plate and the explosion-proof motor; the diameter of the first heat insulation plate is matched with that of the motor mounting plate, the high-temperature heat insulation cover is fixedly connected with the motor mounting plate, one end of the high-temperature heat insulation cover is sealed by the motor mounting plate, and one end, close to the impeller, of the high-temperature heat insulation cover is provided with a cooling air inlet;
the explosion-proof motor adopts a double-flange structure, wherein a first flange is fixed on the motor mounting plate through bolts and nuts, a second flange is arranged in parallel with the first flange, the diameter of the second flange is smaller than that of the first flange, the second flange is arranged on the inner side of the first flange and is fixed on the motor body through a plurality of reinforcing plates, and a plurality of reinforcing ribs are arranged between the first flange and the second flange; a motor shaft of the explosion-proof motor extends outwards to extend through the motor body, the tail end of the explosion-proof motor is connected with a cooling fan, and the upper part of the explosion-proof motor is provided with a wiring box;
the middle of the upper part of the fan shell is provided with a wiring area, the wiring area consists of two vertical flat plates which are horizontally arranged in parallel along the axis of the fan shell and a closed flat plate which is arranged along the radial direction of the fan shell, the two vertical flat plates are respectively connected to the two ends of the closed flat plate, and the lower parts of the two vertical flat plates are fixed on a high-temperature isolation cover; the wiring letter is arranged in the wiring area.
Furthermore, a shock absorption pad is arranged inside the high-temperature isolation cover.
Further, a second heat insulation plate is arranged on the impeller.
Furthermore, a protective net is arranged at the air outlet of the fan shell.
When the high-temperature-resistant explosion-proof axial flow motor for the ship is used, cooling gas is firstly introduced into the cooling air inlet, the explosion-proof motor is started, high-temperature gas in the cabin flows under the driving of the impeller, and is discharged outwards through the air channel formed between the high-temperature isolation cover and the fan shell; the body of the explosion-proof motor is relatively slowly heated under the protection of the high-temperature isolation cover and the isolation action of the first heat insulation plate, and if the impeller is provided with the second heat insulation plate, the heat conduction is less; meanwhile, cooling gas is introduced into the high-temperature isolation cover from the cooling air inlet to cool the body of the explosion-proof motor, and a cooling fan arranged on a motor shaft of the explosion-proof motor can also play a certain role in cooling, so that the overall temperature in the high-temperature isolation cover is lower, the working environment temperature of the explosion-proof motor is relatively moderate, the service life and the good working state of the explosion-proof motor are prolonged, and the motor shaft can also work in an environment with moderate temperature; and meanwhile, the explosion-proof motor is cooled by adopting cooling air, so that the explosion-proof motor is convenient to use and wide in application range.
The utility model relates to an explosion-proof axial fan of marine high temperature resistant compares with prior art and has following advantage:
(1) the heat insulation plate structure is adopted to reduce the heat conduction of the explosion-proof motor along the axial direction of the motor as much as possible, and the heat insulation cover, the cooling air and the cooling fan are used for cooling, so that the working temperature of the explosion-proof motor is reduced as much as possible, the service life of the explosion-proof motor can be prolonged, and a good working state can be kept;
(2) the explosion-proof motor adopts the double-flange design, also can reduce the heat along the extending direction of motor axial shaft, the conduction of bearing and explosion-proof motor body.
Drawings
Fig. 1 is a schematic structural view of a high-temperature-resistant explosion-proof axial flow fan for a ship according to the present invention;
fig. 2 is a main sectional view of the high-temperature resistant explosion-proof axial flow fan for a ship of the present invention;
fig. 3 is a top view of the high temperature resistant explosion-proof axial flow fan for a ship according to the present invention;
fig. 4 is the utility model relates to a marine high temperature resistant explosion-proof axial fan explosion-proof machine structure schematic diagram.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-4, the solid arrows in the drawings show the flow direction of high-temperature gas, and the hollow arrows show the flow direction of cooling gas, the utility model relates to a marine high-temperature-resistant explosion-proof axial flow fan, which comprises a fan shell 1, an impeller 2 and an explosion-proof motor 3; the fan shell 1 is cylindrical, one end of the fan shell is an air inlet, the other end of the fan shell is an air outlet, the impeller 2 is arranged close to the air inlet, and the impeller 2 is fixedly connected to a motor shaft of the explosion-proof motor 3;
the explosion-proof motor 3 is arranged in the middle of the fan shell 1, a high-temperature isolation cover 4 is arranged on the outer side of the explosion-proof motor, the high-temperature isolation cover 4 is fixed inside the fan shell 1, the length of the high-temperature isolation cover 4 is smaller than that of the fan shell 1 and is about half of that of the fan shell 1, and the diameter of the high-temperature isolation cover 4 is smaller than that of the fan shell 1 and is also about half of that of the fan shell 1;
a motor mounting plate 5 is arranged on the fan shell 1 between the explosion-proof motor 3 and the impeller 2, the explosion-proof motor 3 is mounted on the motor mounting plate 5, and a first heat insulation plate 6 is arranged between the motor mounting plate 5 and the explosion-proof motor 3; the diameter of the first heat insulation plate 6 is matched with that of the motor mounting plate 5, the high-temperature heat insulation cover 4 is fixedly connected with the motor mounting plate 5, one end of the high-temperature heat insulation cover 4 is sealed by the motor mounting plate 5, and one end, close to the impeller 2, of the high-temperature heat insulation cover 4 is provided with a cooling air inlet 7;
the explosion-proof motor 3 adopts a double-flange structure, wherein a first flange 31 is fixed on the motor mounting plate 5 through bolts and nuts, a second flange 32 is arranged in parallel with the first flange 31, the diameter of the second flange 32 is smaller than that of the first flange 31, the second flange 32 is arranged on the inner side of the first flange 31 and fixed on the motor body through a plurality of reinforcing plates, and a plurality of reinforcing ribs are arranged between the first flange 31 and the second flange 32; a motor shaft of the explosion-proof motor 3 extends outwards through the motor body, the tail end of the motor shaft is connected with a cooling fan 33, and the upper part of the explosion-proof motor 3 is provided with a wiring box 34; the cooling fan 33 does not extend beyond the body of the fan housing 1;
the middle of the upper part of the fan shell 1 is provided with a wiring area 11, the wiring area 11 consists of two vertical flat plates which are horizontally arranged in parallel along the axis of the fan shell 1 and a closed flat plate which is arranged along the radial direction of the fan shell 1, the two vertical flat plates are respectively connected to the two ends of the closed flat plate, and the lower parts of the two vertical flat plates are fixed on the high-temperature isolation cover 4, so that a relatively closed space is still kept in the fan shell 1, and hot air can move outwards from the two sides of the wiring area 11; the wiring letter 34 is arranged in the wiring region 11, and is convenient to be connected with an external power supply.
Preferably, the inside of the high-temperature isolation hood 4 is provided with a shock pad, which can be made of silica gel, and the shock pad is fixed on the inner side of the high-temperature isolation hood 4, so that the shock generated by the explosion-proof motor 3 during operation can be absorbed as much as possible, and the shock of the high-temperature isolation hood 4 can be reduced.
Preferably, a second heat shield is also provided on the impeller 2 to further reduce heat transfer to the motor.
For safety, a protective net is preferably provided at the air outlet of the fan housing 1.
When the high-temperature-resistant explosion-proof axial flow motor for the ship is used, cooling gas is firstly introduced into the cooling air inlet 7, the explosion-proof motor 3 is started, high-temperature gas in the cabin flows under the driving of the impeller 2, and is discharged outwards through the air channel formed between the high-temperature isolation cover 4 and the fan shell 1; the body of the explosion-proof motor 3 is relatively slowly heated under the protection of the high-temperature isolation cover 4 and the isolation action of the first heat insulation plate 6, and if the impeller 2 is provided with the second heat insulation plate, the heat conduction is less; meanwhile, cooling gas is introduced into the high-temperature isolation cover 4 from the cooling air inlet 7 to cool the body of the explosion-proof motor 3, and the cooling fan 33 arranged on the motor shaft of the explosion-proof motor 3 can also play a certain cooling role, so that the overall temperature in the high-temperature isolation cover 4 is lower, the working environment temperature of the explosion-proof motor 3 is relatively moderate, the service life and the good working state of the explosion-proof motor 3 are prolonged, and the motor shaft can also work in an environment with moderate temperature; and meanwhile, the explosion-proof motor 3 is cooled by adopting cooling air, so that the use is convenient, and the application range is wide.
In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.
In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (4)
1. A high-temperature-resistant explosion-proof axial flow fan for a ship is characterized by comprising a fan shell, an impeller and an explosion-proof motor; the fan shell is cylindrical, one end of the fan shell is an air inlet, the other end of the fan shell is an air outlet, the impeller is arranged close to the air inlet, and the impeller is fixedly connected to a motor shaft of the explosion-proof motor;
the explosion-proof motor is arranged in the middle of the fan shell, a high-temperature isolation cover is arranged on the outer side of the explosion-proof motor and fixed inside the fan shell, the length of the high-temperature isolation cover is smaller than that of the fan shell, and the diameter of the high-temperature isolation cover is smaller than that of the fan shell;
a motor mounting plate is arranged on a fan shell between the explosion-proof motor and the impeller, the explosion-proof motor is mounted on the motor mounting plate, and a first heat insulation plate is arranged between the motor mounting plate and the explosion-proof motor; the diameter of the first heat insulation plate is matched with that of the motor mounting plate, the high-temperature isolation cover is fixedly connected with the motor mounting plate, one end of the high-temperature isolation cover is sealed by the motor mounting plate, and one end, close to the impeller, of the high-temperature isolation cover is provided with a cooling air inlet;
the explosion-proof motor adopts a double-flange structure, wherein a first flange is fixed on the motor mounting plate through bolts and nuts, a second flange is arranged in parallel with the first flange, the diameter of the second flange is smaller than that of the first flange, the second flange is arranged on the inner side of the first flange and is fixed on the motor body through a plurality of reinforcing plates, and a plurality of reinforcing ribs are arranged between the first flange and the second flange; a motor shaft of the explosion-proof motor extends outwards to extend through the motor body, the tail end of the explosion-proof motor is connected with a cooling fan, and the upper part of the explosion-proof motor is provided with a wiring box;
the middle of the upper part of the fan shell is provided with a wiring area, the wiring area consists of two vertical flat plates which are horizontally arranged in parallel along the axis of the fan shell and a closed flat plate which is arranged along the radial direction of the fan shell, the two vertical flat plates are respectively connected to the two ends of the closed flat plate, and the lower parts of the two vertical flat plates are fixed on a high-temperature isolation cover; the wiring letter is arranged in the wiring area.
2. The marine high-temperature-resistant explosion-proof axial flow fan according to claim 1, wherein a shock absorption pad is provided inside the high-temperature shield.
3. The marine high temperature resistant explosion proof axial flow fan according to claim 1, wherein a second heat insulating plate is provided on the impeller.
4. The marine high-temperature-resistant explosion-proof axial flow fan according to claim 1, wherein a protective net is arranged at the air outlet of the fan housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921994982.5U CN210829785U (en) | 2019-11-18 | 2019-11-18 | Marine high-temperature-resistant explosion-proof axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921994982.5U CN210829785U (en) | 2019-11-18 | 2019-11-18 | Marine high-temperature-resistant explosion-proof axial flow fan |
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| Publication Number | Publication Date |
|---|---|
| CN210829785U true CN210829785U (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921994982.5U Active CN210829785U (en) | 2019-11-18 | 2019-11-18 | Marine high-temperature-resistant explosion-proof axial flow fan |
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| Country | Link |
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| CN (1) | CN210829785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236586A (en) * | 2021-05-20 | 2021-08-10 | 中国舰船研究设计中心 | Self-cooling marine fire control axial fan that discharges fume |
| CN114941637A (en) * | 2022-04-24 | 2022-08-26 | 马国山 | Motor cavity air pressure balancing device |
-
2019
- 2019-11-18 CN CN201921994982.5U patent/CN210829785U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236586A (en) * | 2021-05-20 | 2021-08-10 | 中国舰船研究设计中心 | Self-cooling marine fire control axial fan that discharges fume |
| CN114941637A (en) * | 2022-04-24 | 2022-08-26 | 马国山 | Motor cavity air pressure balancing device |
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