CN206071932U - A kind of control system of hydraulically powered counter-rotating fan - Google Patents
A kind of control system of hydraulically powered counter-rotating fan Download PDFInfo
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- CN206071932U CN206071932U CN201621103501.3U CN201621103501U CN206071932U CN 206071932 U CN206071932 U CN 206071932U CN 201621103501 U CN201621103501 U CN 201621103501U CN 206071932 U CN206071932 U CN 206071932U
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- control system
- logic controller
- proportioning valve
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Abstract
The utility model discloses a kind of control system of hydraulically powered counter-rotating fan.The control system includes both stage impellers, the revolution detector of two hydraulic motors, logic controller and both stage impellers and two proportioning valves, the signal output part of the revolution detector of both stage impellers is connected with the signal input part of logic controller, the signal output part of logic controller is connected with the signal input part of two proportioning valves respectively, and the signal output part of two proportioning valves is distinguished the signal input part of corresponding hydraulic motor and is connected.This utility model can be prevented effectively from hydraulically powered counter-rotating fan because rotating speed deviation caused by starting time length, difficulty in starting and " surge " phenomenon generation.
Description
Technical field
This utility model is to be related to a kind of control system of hydraulically powered counter-rotating fan, belongs to counter-rotating fan control technology
Field.
Background technology
Counter-rotating fan is the blower fan of the contrary both stage impellers composition in direction of rotation by installing on the same axis.Due to stream
The rotary speed that the air-flow of counter-rotating fan is formed after the 1st grade is crossed, is reversely rotated by the 2nd grade and is eliminated, therefore eliminate forward and backward leading
Leaf, has the advantages that compact conformation, blower fan internal resistance are little, flow is big, pressure is raised, efficiency high, is widely used in tunnel, mine, boat
The fields such as sky.
At present the both stage impellers of counter-rotating fan are respectively by two identical motor-drivens, but using the right of motor-driven
There is volume greatly in cyclone cluster, quality weight, the defect problem such as inconvenience particularly in mobile use.Chinese patent literature
A kind of hydraulically powered counter-rotating fan of mining extraction type is disclosed in CN201220233668.9.Due to output identical
Motor is compared, and the weight of hydraulic motor is the 1/30～1/20 of motor weight, volume be its 1/50～1/30, therefore adopt
Counter-rotating fan of the counter-rotating fan of fluid motor-driven compared to motor-driven, volume be only its 1/3, weight for its 1/2, greatly
Amplitude reduces overall dimensions and reduces main screw lift, the use of suitable narrow zone, and significantly improve counter-rotating fan can
Mobility and the scope of application, and with many advantages, such as safety in inflammable and explosive region.
Although two identical hydraulic motors in theory, in hydraulic system, completely may be used under conditions of equal flow
To reach consistent output speed, but in actually used operating mode, because of the system by itself hydraulic motor, hydraulic pump and hydraulic valve
Manufacturing accuracy etc. affects, and the difference of the fluid pressure line installed to meet realistic space locational requirement, in hydraulic system
The actual speed of two identical hydraulic motors cause tremendous influence, cause the output speed of two hydraulic motors to be unable to reach
Or be close to unanimously, the rotating speed deviation of both stage impellers, it will cause the start-up course time of counter-rotating fan long, difficulty in starting, easily
The problems such as there is " surge " phenomenon, so that becoming a bottleneck difficult problem for hydraulically powered counter-rotating fan popularization and application.
Utility model content
For the problems referred to above that prior art is present, the purpose of this utility model is to provide a kind of hydraulically powered to whirlwind
The control system of machine, to solve the problems, such as the synchronization of both stage impellers, promotes the extensive application of hydraulically powered counter-rotating fan.
For achieving the above object, the technical solution adopted in the utility model is as follows：
A kind of control system of hydraulically powered counter-rotating fan, including both stage impellers and drive two of both stage impellers respectively
Hydraulic motor；It is characterized in that：Also include the revolution detector and two proportioning valves of logic controller and both stage impellers, two-stage leaf
The signal output part of the revolution detector of wheel is connected with the signal input part of logic controller, and the signal of logic controller is defeated
Go out end to be connected with the signal input part of two proportioning valves respectively, the signal output part of two proportioning valves distinguishes corresponding hydraulic pressure
The signal input part of motor is connected.
A kind of embodiment, described two proportioning valves are also connected with the outfan of 1 hydraulic pump simultaneously, certainly also can be respectively
One hydraulic pump of connection.
Preferably, overflow is provided between at least one of the hydraulic pump and two proportioning valves proportioning valve
Valve.
The revolution detector is arranged on impeller to be detected or drives on the hydraulic motor of the impeller or is arranged on institute
State on the actuating device between impeller and the hydraulic motor.
The revolution detector can adopt existing infrared tachymeter, laser speed instrument etc. directly to be tested the speed,
Document (can also be see using speed probe, rotary encoder or baroceptor etc.：Sanming College's journal, volume 29
2nd phase p61-64, in April, 2012) being tested the speed indirectly.
The proportioning valve is automatically controlled or hydraulic control.
The signal is digital quantity or analog quantity.
Control system described in the utility model realizes that the synchronous method of both stage impellers is as follows：
S1) logic controller calculates or obtains the real-time tachometer value of both stage impellers respectively；
S2) logic controller carries out size with the rated rotational frequency value of setting to the real-time tachometer value of both stage impellers and compares；
S3) logic controller exports the open degree Regulate signal of corresponding proportion valve respectively according to comparative result.
Because of the open degree by adjusting proportioning valve, the rotating speed of scalable hydraulic motor, thus it is capable of achieving to rotate respective leaves
The adjustment of speed.
As RSn, the real-time tachometer value of one stage impeller is RS1 to the impeller rated rotational frequency value for setting, the reality of sencond stage impeller
When tachometer value be RS2, the proportioning valve for regulating and controlling one stage impeller is designated as proportioning valve I, and the proportioning valve for regulating and controlling sencond stage impeller is designated as proportioning valve
II, logic controller is as follows according to the concrete control method of the open degree of comparative result, comparative example valve I and proportioning valve II：
A) RS1 ＞ RSn, RS2 >=RSn, reduce the open degree of proportioning valve I, and the open degree of proportioning valve II is by h) or i) determining；
B) RS1=RSn, RS2 >=RSn, the open degree of proportioning valve I are constant, and the open degree of proportioning valve II is by h) or i) determining；
C) RS1 ＜ RSn, RS2 >=RSn, the open degree of scaling up valve I, the open degree of proportioning valve II is by h) or i) determining；
D) RS2 ＜ RS1 ＜ RSn, the open degree of proportioning valve I are constant, the open degree of scaling up valve II；
E) RS2=RS1 ＜ RSn, while the open degree of scaling up valve I and proportioning valve II；
F) RS1 ＜ RS2 ＜ RSn, the open degree of scaling up valve I, the open degree of proportioning valve II are constant；
G) RS2 ＜ RSn, RS1 >=RSn, the open degree of scaling up valve II, the open degree of proportioning valve I is by a) or b) determining；
H) RS2=RSn, RS1 >=RSn, the open degree of proportioning valve II are constant, and the open degree of proportioning valve I is by a) or b) determining；
I) RS2 ＞ RSn, RS1 >=RSn, reduce the open degree of proportioning valve II, and the open degree of proportioning valve I is by a) or b) determining.
The tachometer value carried out by logic controller described in this utility model is calculated, size compares and judges and comparative example valve
The regulation of open degree can be realized using prior art, be not improvement content of the present utility model.
Compared to prior art, Advantageous Effects of the present utility model are：
This utility model passes through real-time detection wheel speed and is adjusted in time, ensures that hydraulically powered to rotation
The both stage impellers of blower fan realize that synchronization or homochronousness start and rotating speed when working can reach or it is consistent to be close to, and can be prevented effectively from liquid
The counter-rotating fan that pressure drives is because of the generation of the caused starting time length of rotating speed deviation institute, difficulty in starting and " surge " phenomenon；Therefore,
This utility model can be obviously improved the operating mode adaptability and operational efficiency of hydraulically powered counter-rotating fan, hence it is evident that widen hydraulic pressure
The use range and Effec-tive Function scope of the counter-rotating fan of driving, can promote the extensive application of hydraulically powered counter-rotating fan.
Description of the drawings
Fig. 1 is the structural representation of the control system of a kind of hydraulically powered counter-rotating fan that this utility model embodiment is provided
Figure.
Specific embodiment
The technical solution of the utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in figure 1, the control system of a kind of hydraulically powered counter-rotating fan of this utility model offer, including one-level leaf
Wheel 1a, sencond stage impeller 1b, I 2a of hydraulic motor for driving one stage impeller 1a, II 2b of hydraulic motor for driving sencond stage impeller 1b, logic
The revolution detector 4a of controller 3, one stage impeller, the revolution detector 4b of sencond stage impeller, I 5a of proportioning valve, II 5b of proportioning valve, liquid
Press pump 6, overflow valve 7, the letter of the revolution detector 4b of the signal output part and sencond stage impeller of the revolution detector 4a of one stage impeller
Number outfan is connected with the signal input part of logic controller 3 respectively, the signal output part of logic controller 3 respectively with ratio
I 5a of valve is connected with the signal input part of II 5b of proportioning valve；Corresponding I 2a of hydraulic motor of the signal output part of I 5a of proportioning valve
Signal input part be connected, the signal input part phase of corresponding II 2b of hydraulic motor of the signal output part of II 5b of proportioning valve
Even.
The revolution detector 4a of one stage impeller may be installed on one stage impeller 1a or drive the hydraulic motor I of one stage impeller 1a
2a is upper or actuating device between I 2a of one stage impeller 1a and hydraulic motor on；In the same manner, the revolution detector of sencond stage impeller
4b may be installed on sencond stage impeller 1b or drive on II 2b of hydraulic motor of sencond stage impeller 1b or installed in sencond stage impeller 1b and liquid
On actuating device between II 2b of pressure motor；The revolution detector 4b of the revolution detector 4a and sencond stage impeller of one stage impeller
Existing infrared tachymeter, laser speed instrument etc. are adopted directly to be tested the speed, it would however also be possible to employ speed probe, rotation
Encoder or baroceptor (see document：Sanming College's journal, the 2nd phase p61-64 of volume 29, in April, 2012) etc. entering
In the ranks connect and test the speed.
I 5a of the proportioning valve and II 5b of proportioning valve can be automatically controlled or hydraulic control；The signal can be digital quantity or analog quantity.
Control system described in the utility model realizes that the synchronous method of both stage impellers is as follows：
S1) logic controller calculates or obtains the real-time tachometer value of both stage impellers respectively；
S2) logic controller carries out size with the rated rotational frequency value of setting to the real-time tachometer value of both stage impellers and compares；
S3) logic controller exports the open degree Regulate signal of corresponding proportion valve respectively according to comparative result.
Because of the open degree by adjusting proportioning valve, the rotating speed of scalable hydraulic motor, thus it is capable of achieving to rotate respective leaves
The adjustment of speed.
When starting working under driving of the hydraulic pump 6 in power source 8, hydraulic pump 6 makes I 5a of proportioning valve and II 5b of proportioning valve point
Do not open, so that I 2a of hydraulic motor and II 2b of hydraulic motor is opened, drive one stage impeller 1a and sencond stage impeller 1b to start respectively
Work, so that hydraulically powered counter-rotating fan unlatching work；
The rotating speed of the tach signal and sencond stage impeller of the one stage impeller for detecting is examined by the revolution detector 4a of one stage impeller
Survey device 4b and the tach signal of the sencond stage impeller for detecting is transferred to into logic controller 3 respectively, logic controller 3 is first according to
There is technology to calculate or change the real-time tachometer value of both stage impellers respectively, then the real-time tachometer value and the mark for setting to both stage impellers
Quasi- tachometer value carries out size comparison, exports open degree respectively further according to I 5a of comparative result comparative example valve, II 5b of proportioning valve and adjusts letter
Number, I 5a of passing ratio valve adjusts the rotating speed of I 2a of hydraulic motor, so as to realize the adjustment of rotational speed to one stage impeller 1a；Meanwhile, lead to
Cross II 5b of proportioning valve adjust II 2b of hydraulic motor rotating speed, so as to realize to and the adjustment of rotational speed of level impeller 1b, reach two-stage leaf
The synchronization of wheel.
As RSn, the real-time tachometer value of one stage impeller is RS1 to the impeller rated rotational frequency value for setting, the reality of sencond stage impeller
When tachometer value be RS2, regulate and control one stage impeller proportioning valve be proportioning valve I, regulate and control sencond stage impeller proportioning valve be proportioning valve II, patrol
Collect controller as follows according to the concrete control method of the open degree of comparative result, comparative example valve I and proportioning valve II：
A) RS1 ＞ RSn, RS2 >=RSn, reduce the open degree of proportioning valve I, and the open degree of proportioning valve II is by h) or i) determining；
B) RS1=RSn, RS2 >=RSn, the open degree of proportioning valve I are constant, and the open degree of proportioning valve II is by h) or i) determining；
C) RS1 ＜ RSn, RS2 >=RSn, the open degree of scaling up valve I, the open degree of proportioning valve II is by h) or i) determining；
D) RS2 ＜ RS1 ＜ RSn, the open degree of proportioning valve I are constant, the open degree of scaling up valve II；
E) RS2=RS1 ＜ RSn, while the open degree of scaling up valve I and proportioning valve II；
F) RS1 ＜ RS2 ＜ RSn, the open degree of scaling up valve I, the open degree of proportioning valve II are constant；
G) RS2 ＜ RSn, RS1 >=RSn, the open degree of scaling up valve II, the open degree of proportioning valve I is by a) or b) determining；
H) RS2=RSn, RS1 >=RSn, the open degree of proportioning valve II are constant, and the open degree of proportioning valve I is by a) or b) determining；
I) RS2 ＞ RSn, RS1 >=RSn, reduce the open degree of proportioning valve II, and the open degree of proportioning valve I is by a) or b) determining.
Finally be necessary it is pointed out here that be：The foregoing is only this utility model preferably specific embodiment, but this
The protection domain of utility model is not limited thereto, and any those familiar with the art is disclosed in this utility model
In technical scope, the change or replacement that can be readily occurred in should all be covered within protection domain of the present utility model.
Claims (5)
1. a kind of control system of hydraulically powered counter-rotating fan, including both stage impellers and respectively two liquid of driving both stage impellers
Pressure motor；It is characterized in that：Also include the revolution detector and two proportioning valves of logic controller and both stage impellers, both stage impellers
The signal output part of revolution detector be connected with the signal input part of logic controller, the signal output of logic controller
End is connected with the signal input part of two proportioning valves respectively, and the signal output part of two proportioning valves distinguishes corresponding hydraulic pressure horse
The signal input part for reaching is connected.
2. control system according to claim 1, it is characterised in that：Described two proportioning valves also simultaneously with 1 hydraulic pump
Outfan be connected.
3. control system according to claim 2, it is characterised in that：In the hydraulic pump and two proportioning valves at least
Overflow valve is provided between one proportioning valve.
4. control system according to claim 1, it is characterised in that：The revolution detector is arranged on impeller to be detected
Go up or drive on the actuating device on the hydraulic motor of the impeller or between the impeller and the hydraulic motor.
5. control system according to claim 1, it is characterised in that：The revolution detector is infrared tachymeter, laser
Speed instrument, speed probe, rotary encoder or baroceptor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621103501.3U CN206071932U (en) | 2016-10-07 | 2016-10-07 | A kind of control system of hydraulically powered counter-rotating fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621103501.3U CN206071932U (en) | 2016-10-07 | 2016-10-07 | A kind of control system of hydraulically powered counter-rotating fan |
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| Publication Number | Publication Date |
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| CN206071932U true CN206071932U (en) | 2017-04-05 |
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| CN201621103501.3U Active CN206071932U (en) | 2016-10-07 | 2016-10-07 | A kind of control system of hydraulically powered counter-rotating fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194813A (en) * | 2016-10-07 | 2016-12-07 | 上海格拉曼国际消防装备有限公司 | The control system of a kind of hydraulically powered counter-rotating fan and control method thereof |
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2016
- 2016-10-07 CN CN201621103501.3U patent/CN206071932U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194813A (en) * | 2016-10-07 | 2016-12-07 | 上海格拉曼国际消防装备有限公司 | The control system of a kind of hydraulically powered counter-rotating fan and control method thereof |
| CN106194813B (en) * | 2016-10-07 | 2017-10-03 | 上海格拉曼国际消防装备有限公司 | A kind of control system and its control method of the counter-rotating fan of hydraulic-driven |
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