CN117189650A - Anti-surge device of parallel blower - Google Patents
Anti-surge device of parallel blower Download PDFInfo
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- CN117189650A CN117189650A CN202311112035.XA CN202311112035A CN117189650A CN 117189650 A CN117189650 A CN 117189650A CN 202311112035 A CN202311112035 A CN 202311112035A CN 117189650 A CN117189650 A CN 117189650A
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- 238000012986 modification Methods 0.000 description 2
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- 239000000725 suspension Substances 0.000 description 2
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Abstract
The invention discloses an anti-surge device of a parallel blower, which comprises a support plate provided with a motor and two blowers, wherein the motor is arranged between the two blowers, and the output end of the motor is connected with the input ends of the two blowers through a transmission system so as to control the synchronous and equidirectional operation of the motor; the motor is utilized to transmit power to the two parallel blowers through the gear transmission system and the chain transmission system, so that the two blowers keep synchronous running, and the surge phenomenon caused by different rotating speeds of the two blowers is avoided. This parallelly connected air-blower installs wind gap pressure regulating device at the air-blower entry, and the air-blower can be because operating mode, or the blade wearing and tearing scheduling problem, leads to two export pressures to appear the condition of inequality, inconsistent, can produce surging phenomenon, and according to the data that pressure sensor detected, through the angle of wind gap pressure regulating device adjustment toper blade, adjustable intake for the wind gap pressure of two air-blowers is unanimous, stops surging phenomenon's emergence.
Description
Technical Field
The invention relates to the field of anti-surge devices of blowers, in particular to an anti-surge device of a parallel blower.
Background
Since ancient times, the blower is widely seen in daily life, and along with the development of technology, the production level is improved, and the requirement on the blower is gradually improved. The safe operation of the blower is directly related to the normal production of each industry. The main purpose of the parallel blowers is to increase the flow, and when the blowers are connected in parallel, the blowers can blow air to the same pipeline.
Surging of the parallel blowers mainly occurs on the double-machine parallel pipeline, and when one blower operates normally and the other blower is about to stop, the two blowers are in small flow due to the phenomenon of 'contending wind', so that surging occurs. Or after the shutdown outlet valve is closed, the newly started unit is blocked by the normal unit pressure and is not loaded due to slow starting, so that the unit runs in a surge state; in addition, when the blowers with the same rotation speed are used, the conditions of unequal pressures of the two outlets can be caused due to the problems of working conditions, blade abrasion and the like, and if the pressures are inconsistent, the surge phenomenon can be generated. The invention discloses a magnetic suspension high-speed centrifugal blower anti-surge method and a magnetic suspension high-speed centrifugal blower anti-surge system, which adopt a closed-loop control technology, collect outlet pressure and fan flow signals to adjust the rotating speed of a blower so as to realize the aim of anti-surge, but the invention adopts electronic components and is not suitable for working in a disfiguring environment.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide an anti-surge device of a parallel blower, which can solve the surge phenomenon caused by 'competing for wind' when one blower operates normally and the other blower is to be stopped and the two blowers are under a small flow; or after the shutdown outlet valve is closed, the newly started unit is blocked by the normal unit pressure and is not loaded due to slow starting, so that the unit operates in a surge state.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides an anti-surge device of a parallel blower, which comprises a support plate provided with a motor and two blowers, wherein the motor is arranged between the two blowers, and the output end of the motor is connected with the input ends of the two blowers through a transmission system so as to control the synchronous and equidirectional operation of the motor;
the outlet of the air blower is provided with an air port pressure regulating device, the air port pressure regulating device comprises an annular sleeve fixed at the outlet of the air blower, and a plurality of conical blades uniformly distributed in an annular array are rotationally connected on the inner wall of the annular sleeve; the arc-shaped ends of the conical blades are attached to the annular sleeve and are connected with a rotating shaft at the middle part of the conical blades, the rotating shaft is rotatably connected with the annular sleeve and is connected with a positioning block after penetrating through the annular sleeve, and the positioning block is provided with a strip-shaped groove;
the outer wall of the annular sleeve is provided with a circle of annular rail capable of rotating along the circumferential direction of the annular rail, the annular rail is provided with a plurality of cylindrical rods matched with the strip-shaped grooves on the positioning blocks, the outer wall of the annular sleeve is also provided with a voltage regulating motor, the output end of the voltage regulating motor is meshed with the strip-shaped teeth on the outer side of the annular rail to control the rotation of the voltage regulating motor, and when the annular rail rotates, the cylindrical rods are matched with the strip-shaped grooves on the positioning blocks to drive the conical blades to rotate, so that the air inlet quantity of the annular sleeve is regulated;
the inlet of the air blower is provided with a pressure sensor for detecting the pressure of the air inlet, and the pressure sensor and the voltage regulating motor are electrically connected with an external controller.
Preferably, the transmission system comprises a gear transmission system, the gear transmission system comprises bevel gears fixed on an output shaft of a motor, input ends of the two blowers are connected with auxiliary bevel gears through shaft rods, the auxiliary bevel gears are meshed with the bevel gears for transmission, and a support plate for supporting the shaft rods is arranged on the support plate; in order to ensure that the wind directions of the two blowers are the same, the blades in the two blowers are opposite in rotation direction.
Preferably, when the two blowers are designed in the same vane rotation direction, the transmission system comprises a gear transmission system and a chain transmission system; the gear transmission system comprises bevel gears fixed on an output shaft of the motor, wherein a rotating shaft at the input end of one blower is connected with a secondary bevel gear, and the secondary bevel gear is meshed with the bevel gear; the input end of the other blower is connected with a second auxiliary bevel gear through a chain transmission system, and the second auxiliary bevel gear is meshed with the first auxiliary bevel gear, so that the wind directions of the two blowers are consistent; the support plate is provided with a plurality of support plates for supporting the auxiliary bevel gears, the first auxiliary bevel gears and the second auxiliary bevel gears.
Preferably, the conical blades are provided with 8-12 blades which are in the same plane when all the conical blades are closed and together form a circular structure.
Preferably, a plurality of rotatable H-shaped blocks are arranged on the outer wall of the annular sleeve and used for supporting the annular track.
Preferably, in a normal state, the rotation angle of the conical blade is 90 degrees, the maximum opening state is kept, the steering direction of the conical blade is consistent with the air inlet direction, and the cylindrical rod is positioned in the middle of the strip-shaped groove.
The invention has the beneficial effects that:
(1) The anti-surge device of the parallel blower adopts a pure mechanical structure, has good stability and shock resistance, and is suitable for occasions needing long-term stable work.
(2) The anti-surge device of the parallel blower adopts a pure mechanical structure, has low cost, few elements, simple installation and debugging, convenient use and high production efficiency.
(3) The anti-surge device of the parallel blower is simple in process and convenient to maintain, and the design adopts standardized mechanical elements, so that parts are replaced and maintenance is more convenient and faster.
(4) The motor is utilized to transmit power to the two parallel blowers through the gear transmission system and the chain transmission system, so that the two blowers keep synchronous running, and the surge phenomenon caused by different rotating speeds of the two blowers is avoided.
(5) This parallelly connected air-blower installs wind gap pressure regulating device at the air-blower entry, and the air-blower can be because operating mode, or the blade wearing and tearing scheduling problem, leads to two export pressures to appear the condition of inequality, inconsistent, can produce surging phenomenon, and according to the data that pressure sensor detected, through the angle of wind gap pressure regulating device adjustment toper blade, adjustable intake for the wind gap pressure of two air-blowers is unanimous, stops surging phenomenon's emergence.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram (top view) of an anti-surge device for a parallel blower according to an embodiment of the present invention;
FIG. 2 is a schematic diagram (side view) of an anti-surge device for a parallel blower according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an air port pressure regulating device according to an embodiment of the present invention.
Reference numerals illustrate:
1. a motor; 2. a blower; 3. a support plate; 4. bevel gears, 5, auxiliary bevel gears; 6. a second secondary bevel gear; 61. a first secondary bevel gear; 7. a support plate; 8. a chain drive system; 81. a sprocket; 82. a chain; 9. an annular sleeve; 10. a conical blade; 11. h-shaped blocks; 12. a cylindrical rod; 13. an endless track; 14. an alignment block; 15. a rotating shaft; 16. and a voltage regulating motor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, an anti-surge device of a parallel blower comprises a support plate 3 provided with a motor 1 and two blowers 2, wherein the motor 1 is arranged between the two blowers 2, and the output end of the motor is connected with the input ends of the two blowers 2 through a transmission system so as to control synchronous and equidirectional operation of the motor;
the outlet of the blower 2 is provided with an air port pressure regulating device, the air port pressure regulating device comprises an annular sleeve 9 fixed at the outlet of the blower 2, and a plurality of conical blades 10 uniformly distributed in an annular array are rotationally connected on the inner wall of the annular sleeve 9; the arc-shaped ends of the conical blades 10 are attached to the annular sleeve 9, the middle part of the conical blades is connected with a rotating shaft 15, the rotating shaft 15 is rotatably connected with the annular sleeve 9 and is connected with a positioning block 14 after the rotating shaft passes through the annular sleeve 9, and a strip-shaped groove is formed in the positioning block 14;
the outer wall of the annular sleeve 9 is provided with a circle of annular rail 13 capable of rotating along the circumferential direction of the annular rail 13, the annular rail 13 is provided with a plurality of cylindrical rods 12 which are matched with the strip-shaped grooves on the positioning blocks 14, the outer wall of the annular sleeve 9 is also provided with a voltage regulating motor 16, the output end of the voltage regulating motor 16 is meshed with the strip-shaped teeth on the outer side of the annular rail 13 to control the rotation of the same, and when the annular rail 13 rotates, the conical blades 10 are driven to rotate by the cooperation of the cylindrical rods 12 and the strip-shaped grooves on the positioning blocks 14, so that the air intake of the annular sleeve 9 is regulated;
the inlet of the blower 2 is provided with a pressure sensor for detecting the pressure of the intake air, and the pressure sensor and the pressure regulating motor 16 are electrically connected with an external controller.
The transmission system comprises a gear transmission system, the gear transmission system comprises bevel gears 4 fixed on the output shafts of the motors 1, the input ends of the two blowers 2 are connected with auxiliary bevel gears 5 through shaft rods, the auxiliary bevel gears 5 are meshed with the bevel gears 4 for transmission, and the support plates 7 for supporting the shaft rods are arranged on the support plates 3; to ensure that the wind direction of the two blowers 2 is the same, the blades in the two blowers 2 are rotated in opposite directions.
When the two blowers 2 are designed to have the same vane rotation direction, the transmission system comprises a gear transmission system and a chain transmission system 8; the gear transmission system comprises a bevel gear 4 fixed on the output shaft of the motor 1, wherein a rotating shaft at the input end of one blower 2 is connected with a secondary bevel gear 5, and the secondary bevel gear 5 is meshed with the bevel gear 4; the input end of the other blower 2 is connected with a second auxiliary bevel gear 6 through a chain transmission system 8, and the second auxiliary bevel gear 6 is meshed with the first auxiliary bevel gear 61 between the bevel gears 4, so that the wind directions of the two blowers 2 are consistent; the support plate 3 is provided with a plurality of support plates 7 for supporting the auxiliary bevel gears 5, the first auxiliary bevel gear 61 and the second auxiliary bevel gear 6. The chain drive system 8 includes a sprocket 81 and a chain 82.
The conical blades 10 are provided with 8-12 blades which are in the same plane when all the conical blades 10 are closed and form a circular structure together.
The outer wall of the annular sleeve 9 is provided with a plurality of H-shaped blocks 11 which can rotate and are used for supporting an annular track 13.
In a normal state, the rotation angle of the tapered blade 10 is 90 °, the direction of rotation of the tapered blade 10 is consistent with the direction of air intake, and the cylindrical rod 12 is located in the middle of the bar-shaped groove.
The output power of the anti-surge device of the parallel blower is realized by controlling the rotation speed of a motor in a braking system; the motor is connected with the bracket through bolts, nuts and spring gaskets, so that system faults caused by motor position deviation due to motor operation are avoided;
the motor 1 is utilized to transmit power to the two parallel blowers 2 through a gear transmission system and a chain transmission system 8, so that the two blowers 2 keep synchronous running, and the surge phenomenon caused by different rotation speeds of the two blowers 2 is avoided; and when the blower rotation speed is the same, in the use, can lead to two outlet pressures to appear the condition of inequality because of operating mode, or problem such as blade wearing and tearing, inconsistent, can also produce surging phenomenon, and according to the data of pressure sensor transmission to external controller, go control pressure regulating motor 16 work through the controller, adjust the angle of whole toper blade in the wind gap pressure regulating device, and then adjust the intake, make the wind gap pressure of two blowers unanimous, stop surging phenomenon's emergence, avoid surging phenomenon because of two blowers 2 appear because of the rotational speed is different.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (6)
1. The anti-surge device of the parallel blower is characterized by comprising a support plate (3) provided with a motor (1) and two blowers (2), wherein the motor (1) is arranged between the two blowers (2) and the output end of the motor is connected with the input ends of the two blowers (2) through a transmission system so as to control synchronous and equidirectional operation of the motor;
the air inlet pressure regulating device is arranged at the outlet of the air blower (2) and comprises an annular sleeve (9) fixed at the outlet of the air blower (2), and a plurality of conical blades (10) uniformly distributed in an annular array are rotationally connected to the inner wall of the annular sleeve (9); the arc-shaped ends of the conical blades (10) are attached to the annular sleeve (9) and are connected with a rotating shaft (15) at the middle part of the annular sleeve, the rotating shaft (15) is rotatably connected with the annular sleeve (9) and is connected with a positioning block (14) after penetrating through the annular sleeve (9), and a strip-shaped groove is formed in the positioning block (14);
the annular sleeve (9) is provided with a circle of annular rail (13) capable of rotating along the circumferential direction of the annular rail, the annular rail (13) is provided with a plurality of cylindrical rods (12) which are matched with the strip-shaped grooves on the positioning blocks (14), the outer wall of the annular sleeve (9) is also provided with a voltage regulating motor (16), the output end of the voltage regulating motor (16) is meshed with the strip-shaped teeth on the outer side of the annular rail (13) to control the rotation of the annular rail, and when the annular rail (13) rotates, the conical blades (10) are driven to rotate through the matching of the cylindrical rods (12) and the strip-shaped grooves on the positioning blocks (14), so that the air inlet quantity of the annular sleeve (9) is regulated;
the inlet of the air blower (2) is provided with a pressure sensor for detecting air inlet pressure, and the pressure sensor and the pressure regulating motor (16) are electrically connected with an external controller.
2. A parallel blower anti-surge device according to claim 1, characterized in that the transmission system comprises a gear transmission system, the gear transmission system comprises a bevel gear (4) fixed on the output shaft of the motor (1), the input ends of the two blowers (2) are connected with a secondary bevel gear (5) through a shaft rod, the secondary bevel gear (5) is meshed with the bevel gear (4) for transmission, and a support plate (7) for supporting the shaft rod is arranged on the support plate (3); in order to ensure that the wind directions of the two blowers (2) are the same, the rotation directions of blades in the two blowers (2) are opposite.
3. A parallel blower anti-surge device according to claim 1, characterized in that the transmission system comprises a gear transmission system and a chain transmission system (8) when both blowers (2) are of the same design with the vane rotation direction; the gear transmission system comprises a bevel gear (4) fixed on the output shaft of the motor (1), wherein a rotating shaft at the input end of one blower (2) is connected with a secondary bevel gear (5), and the secondary bevel gear (5) is meshed with the bevel gear (4); the input end of the other blower (2) is connected with a second auxiliary bevel gear (6) through a chain transmission system (8), and the second auxiliary bevel gear (6) is meshed with the first auxiliary bevel gear (61) between the bevel gears (4), so that the wind directions of the two blowers (2) are consistent; the support plate (3) is provided with a plurality of support plates (7) for supporting the auxiliary bevel gears (5), the first auxiliary bevel gears (61) and the second auxiliary bevel gears (6).
4. A parallel blower anti-surge device according to claim 1, characterized in that the conical blades (10) are provided with 8-12 blades, which when all conical blades (10) are closed are in the same plane and together form a circular structure.
5. A parallel blower anti-surge device according to claim 1, characterized in that the outer wall of the annular sleeve (9) is provided with a number of rotatable H-shaped blocks (11) for supporting the annular rail (13).
6. A parallel blower anti-surge device according to claim 1, characterized in that in normal condition the angle of rotation of the conical blades (10) is 90 °, maintaining a maximum opening condition, the direction of rotation of the conical blades (10) is in line with the direction of the intake air, when the cylindrical rod (12) is in the middle of the slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311112035.XA CN117189650A (en) | 2023-08-31 | 2023-08-31 | Anti-surge device of parallel blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311112035.XA CN117189650A (en) | 2023-08-31 | 2023-08-31 | Anti-surge device of parallel blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117189650A true CN117189650A (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311112035.XA Pending CN117189650A (en) | 2023-08-31 | 2023-08-31 | Anti-surge device of parallel blower |
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| Country | Link |
|---|---|
| CN (1) | CN117189650A (en) |
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- 2023-08-31 CN CN202311112035.XA patent/CN117189650A/en active Pending
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