CN214949179U - Parallel operation fan device - Google Patents
Parallel operation fan device Download PDFInfo
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- CN214949179U CN214949179U CN202023206454.4U CN202023206454U CN214949179U CN 214949179 U CN214949179 U CN 214949179U CN 202023206454 U CN202023206454 U CN 202023206454U CN 214949179 U CN214949179 U CN 214949179U
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Abstract
The utility model relates to the technical field of fans, a parallel operation fan device is disclosed, a first air duct comprises a first fan, a first air inlet pipe connected with the air inlet end of the first fan and a first air outlet pipe connected with the air outlet end of the first fan, a second air duct comprises a second fan, a second air inlet pipe connected with the air inlet end of the second fan and a second air outlet pipe connected with the air outlet end of the second fan, a gas pipe is connected between the first air outlet pipe and the second air outlet pipe, the first air outlet pipe is provided with a first baffle door, the second air outlet pipe is provided with a second baffle door, the two ends of the first connecting pipe are respectively connected with the first air inlet pipe and the second air outlet pipe, the two ends of the second connecting pipe are respectively connected with the second air inlet pipe and the first air outlet pipe, and the first connecting pipe and the second connecting pipe are provided with connecting valves; the utility model discloses can utilize the negative pressure of the air inlet end of fan in service to inhale away the flue gas or the hot-air of leaking, the security performance is reliable, effectively improves and overhauls operational environment.
Description
Technical Field
The utility model relates to a fan technical field especially relates to a move fan device side by side.
Background
The large fans (such as primary fan, blower and induced draft fan) of a common thermal power plant are all operated in parallel, the inlet air channels of the fans are communicated in front of the inlet baffle door, and the outlet air channels of the fans are communicated behind the outlet baffle door. When the unilateral fan is in fault maintenance, the inlet baffle door and the outlet baffle door are closed to isolate the fan body for maintenance. In practical situations, the inlet end of the fan is under negative pressure, so that smoke and air leakage cannot be caused; however, the outlet end of the fan is positive pressure, the outlet baffle door at the outlet end of the fan is usually a shutter type baffle door, the shutter type baffle door is not closed tightly due to deformation caused by the influence of factors such as material, installation quality, temperature change and the like, and when the first side fan fails to be overhauled, smoke or hot air conveyed by the second side fan flows backwards to the fan which stops running through the outlet baffle door on the first side fan, so that the overhauling work cannot be carried out.
In order to ensure that the maintenance work is carried out smoothly, the pressure relief drainage is carried out by opening a hole of an outlet baffle door, a temporary partition plate is additionally arranged to reduce backflow, but in the processes of opening or closing the drainage pressure relief hole and installing and removing the temporary partition plate, a worker is always in a high-risk environment of hot air and smoke, and the accidents of scalding and poisoning are easily caused; and a large amount of smoke or hot air leaks in the whole maintenance process, so that peripheral equipment is damaged and the environment is polluted. Or, the maintenance is carried out by stopping the operation of the boiler, but the great economic loss is caused to the power plant.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a side by side operation fan device can utilize the negative pressure of the air inlet end of fan in service to inhale away the flue gas or the hot-air of leaking, and the security performance is reliable, effectively improves and overhauls operational environment.
In order to achieve the above object, the present invention provides a parallel operation fan device, comprising a first air duct, a second air duct, a gas pipe, a first connecting pipe and a second connecting pipe, wherein the first air duct comprises a first fan, a first air inlet pipe connected to an air inlet end of the first fan and a first air outlet pipe connected to an air outlet end of the first fan, the second air duct comprises a second fan, a second air inlet pipe connected to an air inlet end of the second fan and a second air outlet pipe connected to an air outlet end of the second fan, the gas pipe is connected between the first air outlet pipe and the second air outlet pipe, a first baffle door is arranged at one end of the first air outlet pipe close to the gas pipe, a second baffle door is arranged at one end of the second air outlet pipe close to the gas pipe, two ends of the first connecting pipe are respectively connected to the first air inlet pipe and the second air outlet pipe, the first connecting pipe is provided with at least one connecting valve, two ends of the second connecting pipe are respectively connected with the second air inlet pipe and the first air outlet pipe, and the second connecting pipe is provided with at least one connecting valve; when the first fan and the second fan normally operate, the connection valve on the first connection pipe and the connection valve on the second connection pipe are both in a closed state.
As the utility model discloses preferred scheme, first wind channel with the second wind channel is the offside setting, first contact pipe with second contact pipe mutually independent sets up, be equipped with an interconnection valve on the first contact pipe, be equipped with an interconnection valve on the second contact pipe.
As a preferred aspect of the present invention, the first connection pipe includes a first connection section, a second connection section and a connection section, the first connection section is connected between the first air inlet pipe and the connection section, the second connection section is connected between the second air outlet pipe and the connection section, the second connection pipe includes a third connection section and a fourth connection section, the third connection section is connected between the second air inlet pipe and the connection section, and the fourth connection section is connected between the second air outlet pipe and the connection section; the first connection section, the second connection section, the third connection section and the fourth connection section are all provided with a connection valve.
As the preferred scheme of the utility model, first wind channel with the second wind channel is the offside setting.
As the utility model discloses preferred scheme, first wind channel with the second wind channel is the homonymy setting.
As the utility model discloses preferred scheme, the liaison valve on the first liaison pipe with the liaison valve on the second liaison pipe is the picture peg door.
The embodiment of the utility model provides a side by side operation fan device compares with prior art, and its beneficial effect lies in:
when the first fan needs to be overhauled, the second connecting pipe is opened by opening the connecting valve of the second connecting pipe, and smoke or hot air leaked from the first baffle door is pumped away through the second air inlet channel of the second fan under negative pressure, so that the first fan can be normally overhauled; it is visible, the utility model discloses can utilize the negative pressure of the air inlet end of fan in service to inhale away the flue gas or the hot-air of leakage, adopt pipeline negative pressure formula to breathe in, use easy operation, the security performance is reliable, and is with low costs, effectively improves maintenance operational environment.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of a parallel operation fan device provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a parallel operation fan device provided in embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of a parallel operation fan device provided in embodiment 3 of the present invention;
in the figure, 1 is a first air duct; 11 is a first fan; 12 is a first air inlet pipe; 13 is a first air outlet pipe; 14 is a first flapper door; 2 is a second air duct; 21 is a second fan; 22 is a second air inlet pipe; 23 is a second air outlet pipe; 24 is a second shutter door; 3 is a gas transmission pipe; 4 is a first connecting pipe; 41 is a first contact segment; 42 is a second link segment; 43 is a communicating section; 5 is a second connecting pipe; 51 is a third network segment; a fourth connection segment 52; and 6 is a communication valve.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1, a fan device for parallel operation provided in embodiment 1 of the present invention includes a first air duct 1, a second air duct 2, an air pipe 3, a first connecting pipe 4 and a second connecting pipe 5, wherein the first air duct 1 includes a first fan 11, a first air inlet pipe 12 connected to an air inlet end of the first fan 11, and a first air outlet pipe 13 connected to an air outlet end of the first fan 11, the second air duct 2 includes a second fan 21, a second air inlet pipe 22 connected to an air inlet end of the second fan 21, and a second air outlet pipe 23 connected to an air outlet end of the second fan 21, the air pipe 3 is connected between the first air outlet pipe 13 and the second air outlet pipe 23, a first door 14 is disposed at an end of the first air outlet pipe 13 close to the air pipe 3, a second damper door 24 is disposed at an end of the second air outlet pipe 23 close to the air pipe 3, the two ends of the first connecting pipe 4 are respectively connected with the first air inlet pipe 12 and the second air outlet pipe 23, the first air duct 1 and the second air duct 2 are arranged at opposite sides, the first connecting pipe 4 and the second connecting pipe 5 are arranged independently, the first connecting pipe 4 is provided with a connecting valve 6, and the second connecting pipe 5 is provided with a connecting valve 6; when the first fan 11 and the second fan 21 are normally operated, the connection valve 6 of the first connection pipe 4 and the connection valve 6 of the second connection pipe 5 are both in a closed state.
Exemplarily, the connection valve 6 on the first connection pipe 4 and the connection valve 6 on the second connection pipe 5 are both the plugboard door, and the air suction volume of the first connection pipe 4 or the second connection pipe 5 can be adjusted by adjusting the opening degree of the connection valve 6 according to the use requirement.
As shown in fig. 2, a parallel operation fan device provided in embodiment 2 of the present invention is different from embodiment 1 in that the first connection pipe 4 includes a first connection section 41, a second connection section 42 and a connection section 43, the first connection section 41 is connected between the first air inlet pipe 12 and the connection section 43, the second connection section 42 is connected between the second air outlet pipe 23 and the connection section 43, the second connection pipe 5 includes a third connection section 51 and a fourth connection section 52, the third connection section 51 is connected between the second air inlet pipe 22 and the connection section 43, and the fourth connection section 52 is connected between the second air outlet pipe 23 and the connection section 43; the first, second, third and fourth connection sections 41, 42, 51, 52 are each provided with a connection valve 6.
As shown in fig. 3, a parallel operation fan device provided in embodiment 3 of the present invention is different from embodiment 1 in that the first air duct 1 and the second air duct 2 are disposed on the same side, the first connecting pipe 4 includes a first connecting section 41, a second connecting section 42 and a communicating section 43, the first connecting section 41 is connected between the first air inlet pipe 12 and the communicating section 43, the second connecting section 42 is connected between the second air outlet pipe 23 and the communicating section 43, the second connecting pipe 5 includes a third connecting section 51 and a fourth connecting section 52, the third connecting section 51 is connected between the second air inlet pipe 22 and the communicating section 43, and the fourth connecting section 52 is connected between the second air outlet pipe 23 and the communicating section 43; the first, second, third and fourth connection sections 41, 42, 51, 52 are each provided with a connection valve 6.
To sum up, when the first fan 11 needs to be overhauled, the second connecting pipe 5 is opened by opening the connecting valve 6 of the second connecting pipe 5, and the fume or hot air leaked from the first baffle door 14 is pumped away through the second air inlet duct of the second fan 21 under negative pressure, so that the fume or hot air is prevented from overflowing, the damage to personnel, environment and peripheral equipment is avoided, and the first fan 11 can be normally overhauled; otherwise, the same principle is adopted; it is visible, the utility model discloses can utilize the negative pressure of the air inlet end of fan in service to inhale away the flue gas or the hot-air of leaking, use easy operation, the security performance is reliable, effectively improves maintenance operational environment. In addition, the pipeline negative pressure type air suction is adopted, the requirement on the sealing performance of the pipeline is not high due to the fact that the interior of the pipeline is in a negative pressure state, and the material use and construction process standard can meet the ventilation condition. The connecting pipe is installed once, can be recycled, saves materials, reduces workload, and avoids potential safety hazards and environmental pollution.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (6)
1. A fan device capable of running in parallel is characterized by comprising a first air channel, a second air channel, a gas conveying pipe, a first connecting pipe and a second connecting pipe, wherein the first air channel comprises a first fan, a first air inlet pipe connected with the air inlet end of the first fan and a first air outlet pipe connected with the air outlet end of the first fan, the second air channel comprises a second fan, a second air inlet pipe connected with the air inlet end of the second fan and a second air outlet pipe connected with the air outlet end of the second fan, the gas conveying pipe is connected between the first air outlet pipe and the second air outlet pipe, a first baffle door is arranged at one end, close to the gas conveying pipe, of the first air outlet pipe, a second baffle door is arranged at one end, close to the gas conveying pipe, of the second air outlet pipe, two ends of the first connecting pipe are respectively connected with the first air inlet pipe and the second air outlet pipe, the first connecting pipe is provided with at least one connecting valve, two ends of the second connecting pipe are respectively connected with the second air inlet pipe and the first air outlet pipe, and the second connecting pipe is provided with at least one connecting valve; when the first fan and the second fan normally operate, the connection valve on the first connection pipe and the connection valve on the second connection pipe are both in a closed state.
2. The parallel operation fan apparatus of claim 1, wherein the first air duct and the second air duct are disposed at opposite sides, the first connection pipe and the second connection pipe are disposed independently of each other, the first connection pipe is provided with a connection valve, and the second connection pipe is provided with a connection valve.
3. The parallel operation fan apparatus of claim 1, wherein the first communication duct includes a first communication section connected between the first air inlet duct and the communication section, a second communication section connected between the second air outlet duct and the communication section, and a communication section, the second communication duct includes a third communication section connected between the second air inlet duct and the communication section, and a fourth communication section connected between the second air outlet duct and the communication section; the first connection section, the second connection section, the third connection section and the fourth connection section are all provided with a connection valve.
4. The parallel operation fan apparatus of claim 3, wherein the first air path and the second air path are disposed on opposite sides.
5. The parallel operation fan apparatus of claim 3, wherein the first air duct and the second air duct are disposed on a same side.
6. The parallel operation fan apparatus of claim 1, wherein the communication valve on the first communication pipe and the communication valve on the second communication pipe are both bayonet valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023206454.4U CN214949179U (en) | 2020-12-25 | 2020-12-25 | Parallel operation fan device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023206454.4U CN214949179U (en) | 2020-12-25 | 2020-12-25 | Parallel operation fan device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214949179U true CN214949179U (en) | 2021-11-30 |
Family
ID=79115806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023206454.4U Active CN214949179U (en) | 2020-12-25 | 2020-12-25 | Parallel operation fan device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214949179U (en) |
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2020
- 2020-12-25 CN CN202023206454.4U patent/CN214949179U/en active Active
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