CN215672834U - Anti-surge device of air blower - Google Patents
Anti-surge device of air blower Download PDFInfo
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- CN215672834U CN215672834U CN202122277198.6U CN202122277198U CN215672834U CN 215672834 U CN215672834 U CN 215672834U CN 202122277198 U CN202122277198 U CN 202122277198U CN 215672834 U CN215672834 U CN 215672834U
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Abstract
The utility model discloses an anti-surge device of an air blower, and relates to the technical field of air blowers; the blower anti-surge device comprises a blower cabinet body, a blower body, an air outlet pipeline, an emptying valve, an emptying pipeline, an air outlet monitoring device, a pressure difference transmitter and a main control device; a fan body is installed in the fan cabinet body and connected with an air outlet pipeline, an air outlet pressure sensor and a temperature sensor are arranged on the air outlet pipeline for real-time monitoring, and an air outlet monitoring device is connected with a main control device; when detecting air-out pipeline department fan flow and reducing to near surge pressure, main control set opens the atmospheric valve, lets in the air-out pipeline with external air supply through atmospheric pipeline and connecting tube, increases the gas flow in the air-out pipeline, reduce pressure to avoid appearing surge phenomenon, and the device simple structure can not produce too much program control, can not increase equipment manufacturing cost.
Description
Technical Field
The utility model relates to the technical field of blowers, in particular to an anti-surge device of a blower.
Background
Surging is a common fault of a fan, particularly in a debugging stage and an occasion with large application process change, when the fan surging occurs, the flow of the fan periodically flows back and forth and changes in a large range, and the flow shows zero or even has a negative value. If the fan, particularly a high-speed fan, suffers from serious multiple surging, great impulsive force is generated on an impeller, a bearing and connecting parts thereof, when the forces are increased to a certain degree, the rotation and the static parts of the fan are broken, even the whole fan and a pipeline system are destroyed, so that the production cost of matched complete equipment is increased, the yield is reduced, the safe operation of the equipment is directly influenced, and the benefit maximization of upstream and downstream collaborative production cannot be well exerted. In addition, the fan speed is low when the fan fluid flow is low, and the fan speed is high when the fluid flow is high, so that the surge phenomenon occurs when the fan speed is lower than the surge speed.
In order to prevent the instability of the operation of the fan and solve the surge phenomenon of the fan, the common anti-surge measures are to install a vibration sensor or reduce the amount of air entering the fan, but the existing anti-surge measures increase more control programs, increase the consumption of fault points and energy, are difficult to maintain and low in reliability, change the working characteristic curve of the fan to a greater extent and possibly have negative effects on rear-end air utilization equipment.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides an anti-surge device of a blower. The blower anti-surge device utilizes the temperature and pressure sensors to detect the pressure at the air outlet pipeline, utilizes the electric emptying valve to reduce the pipeline pressure, avoids the surge phenomenon, has simple structure, cannot generate excessive program control, and cannot increase the manufacturing cost of equipment.
The technical problem of the utility model is realized by the following technical scheme: an anti-surge device of a blower comprises a blower cabinet body, a blower body, an air outlet pipeline, an emptying valve, an emptying pipeline, an air outlet monitoring device, a pressure difference transmitter and a main control device; a fan body is installed in the fan cabinet body and connected with an air outlet pipeline, an air outlet monitoring device is arranged on the air outlet pipeline, and the air outlet monitoring device is connected with a main control device; the emptying valve is connected to the air outlet pipeline, and the other end of the emptying valve is connected with the emptying pipeline; and a pressure difference transmitter is arranged in the fan cabinet body and is connected with a main control device.
Preferably, the air-out pipeline is reducing tee bend structure, the air-out pipeline includes path entry, big footpath export and branch mouth, the air outlet of fan body is connected to the path entry, big footpath export setting is in the outside of the fan cabinet body, a branch mouth of pipe passes through connecting tube and connects atmospheric valve.
Preferably, the emptying valve is an electric emptying valve, the electric emptying valve is electrically connected with the main control device, and the emptying valve is connected with an external air source through an emptying pipeline.
Preferably, the emptying valve is provided with a sealing gasket at the joint of the connecting pipeline and the emptying pipeline respectively.
Preferably, the gas outlet monitoring device comprises a temperature sensor and a gas outlet pressure sensor, and the temperature sensor and the gas outlet pressure sensor are respectively and electrically connected with the main control device.
Preferably, the pressure difference transmitter is arranged on the inner wall of the fan cabinet body at the air inlet of the fan body.
In conclusion, the utility model has the following beneficial effects:
1. the utility model detects the pressure at the outlet of the fan body through the temperature sensor and the outlet pressure sensor, the pressure difference sensor is arranged in the fan cabinet body, the pressure information at each position of the fan is monitored in real time, and the control system judges and controls whether the electric emptying valve needs to be depressurized and prevented from surging or not, thereby not only avoiding the surging phenomenon of the fan and reducing the energy consumption of the whole device, but also avoiding the occurrence of excessive fault points and program control and reducing fault factors.
2. According to the utility model, the air outlet pipeline adopts a reducing tee joint structure, the small-diameter inlet is connected with the air outlet of the fan body, and the large-diameter outlet is connected with the air delivery pipeline, so that the flow of the air outlet pipeline can be increased, the noise influence of the air outlet of the fan body is reduced, the wind speed is reduced, and the impact force on equipment is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A;
fig. 3 is a schematic view of the structure of the air outlet pipeline.
Description of reference numerals:
1. a blower cabinet body; 2. a fan body; 3. an air outlet pipeline; 301. a minor diameter inlet; 302. a large-diameter outlet; 303. a branch pipe orifice; 4. connecting a pipeline; 5. an atmospheric valve; 6. an emptying pipeline; 7. an air outlet monitoring device; 701. a temperature sensor; 702. an outlet gas pressure sensor; 8. a differential pressure transmitter; 9. a master control device; 10. a gasket seal.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model discloses an anti-surge device of an air blower. As shown in fig. 1-3, an anti-surge device for a blower comprises a blower cabinet body 1, a blower body 2, an air outlet pipeline 3, an air release valve 5, an air release pipeline 6, an air outlet monitoring device 7, a differential pressure transmitter 8 and a main control device 9; a fan body 2 is installed in the fan cabinet body 1, the fan body 2 is connected with an air outlet pipeline 3, an air outlet monitoring device 7 is arranged on the air outlet pipeline 3, and the air outlet monitoring device 7 is connected with a main control device 9; the emptying valve 5 is connected to the air outlet pipeline 3, and the other end of the emptying valve 5 is connected with an emptying pipeline 6; and a pressure difference transmitter 8 is arranged in the fan cabinet body 1, and the pressure difference transmitter 8 is connected with a main control device 9.
Air-out pipeline 3 is reducing tee bend structure, air-out pipeline 3 includes path entry 301, big footpath export 302 and branch mouth 303, path entry 301 connects fan body 2's air outlet, big footpath export 302 sets up the outside at the fan cabinet body 1, branch mouth of pipe 303 passes through connecting tube 4 and connects atmospheric valve 5, and air-out pipeline 3's reducing tee bend structure can increase the gas flow who flows through in the air-out pipeline 3, reduces the noise influence of fan body 2 air outlet, reduces the wind speed simultaneously, reduces the impact force to equipment.
The emptying valve 5 adopts an electric emptying valve, the electric emptying valve is electrically connected with a main control device 9, and the emptying valve 5 is connected with an external air source through an emptying pipeline 6; when surge happens, the electric emptying valve is controlled to be opened through the main control device 9, air is introduced from an external air source through the emptying pipeline 6, and the air flow in the air outlet pipeline 3 is increased.
The vent valve 5 is respectively provided with a sealing gasket 10 at the connection part of the connecting pipeline 4 and the vent pipeline 6, and the sealing gasket 10 forms good air tightness at the connection part to prevent gas leakage.
Gas outlet monitoring devices 7 includes temperature sensor 701 and the pressure sensor 702 of giving vent to anger, temperature sensor 701 and the pressure sensor 702 of giving vent to anger respectively with 9 electric connection of master control set, with the temperature and the real-time transmission of pressure information to master control set 9 in the air-out pipeline 3, judge fan operating condition, the prevention surge takes place.
The differential pressure transmitter 8 is arranged on the inner wall of the fan cabinet body 1 at the air inlet of the fan body 2, and detects the gas pressure condition in the fan cabinet body 1 in real time as a parameter basis for judging the fan flow.
The working principle of the utility model is as follows: fan body 2 starts, the fan normally works, temperature sensor 701 and the gas pressure in the air-out pipeline 3 of giving vent to anger pressure sensor 702 real-time supervision, the gas pressure in the 8 real-time supervision fan cabinet bodies of pressure differential changer, and with monitoring information real-time transmission to master control set 9 in, when monitoring 3 fan flow reductions of air-out pipeline and being close surge pressure, electronic atmospheric valve is opened to master control set 9, let in air-out pipeline 3 through atmospheric duct 6 and connecting tube 4 with external air supply, increase the gas flow in the air-out pipeline 3, the pressure reduction, thereby avoid appearing surge phenomenon.
The above is a preferred embodiment of the present invention, and the scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.
Claims (6)
1. An anti-surge device of a blower is characterized in that: the air conditioner comprises a fan cabinet body (1), a fan body (2), an air outlet pipeline (3), an emptying valve (5), an emptying pipeline (6), an air outlet monitoring device (7), a pressure difference transmitter (8) and a main control device (9); a fan body (2) is installed in the fan cabinet body (1), the fan body (2) is connected with an air outlet pipeline (3), an air outlet monitoring device (7) is arranged on the air outlet pipeline (3), and the air outlet monitoring device (7) is connected with a main control device (9); the emptying valve (5) is connected to the air outlet pipeline (3), and the other end of the emptying valve (5) is connected with an emptying pipeline (6); be equipped with pressure difference changer (8) in the cabinet of blower body (1), pressure difference changer (8) are connected master control set (9).
2. A blower surge protector according to claim 1, wherein: air-out pipeline (3) are reducing tee bend structure, air-out pipeline (3) are including path entry (301), big footpath export (302) and branch mouth (303), the air outlet of fan body (2) is connected in path entry (301), big footpath export (302) sets up the outside at the fan cabinet body (1), branch mouth of pipe (303) are through connecting tube (4) connection atmospheric valve (5).
3. A blower surge protector according to claim 2, wherein: the electronic atmospheric valve is adopted in atmospheric valve (5), electronic atmospheric valve and main control unit (9) electric connection, atmospheric valve (5) are connected external air supply through atmospheric duct (6).
4. A blower surge protector according to claim 3, wherein: and the emptying valve (5) is respectively provided with a sealing gasket (10) at the joint of the connecting pipeline (4) and the emptying pipeline (6).
5. A blower surge protector according to claim 1, wherein: the gas outlet monitoring device (7) comprises a temperature sensor (701) and a gas outlet pressure sensor (702), and the temperature sensor (701) and the gas outlet pressure sensor (702) are respectively electrically connected with the main control device (9).
6. A blower surge protector according to claim 1, wherein: the differential pressure transmitter (8) is arranged on the inner wall of the fan cabinet body (1) at the air inlet of the fan body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122277198.6U CN215672834U (en) | 2021-09-18 | 2021-09-18 | Anti-surge device of air blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122277198.6U CN215672834U (en) | 2021-09-18 | 2021-09-18 | Anti-surge device of air blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672834U true CN215672834U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122277198.6U Active CN215672834U (en) | 2021-09-18 | 2021-09-18 | Anti-surge device of air blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215672834U (en) |
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2021
- 2021-09-18 CN CN202122277198.6U patent/CN215672834U/en active Active
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