CN200940606Y - Static blade control system - Google Patents
Static blade control system Download PDFInfo
- Publication number
- CN200940606Y CN200940606Y CN 200620097629 CN200620097629U CN200940606Y CN 200940606 Y CN200940606 Y CN 200940606Y CN 200620097629 CN200620097629 CN 200620097629 CN 200620097629 U CN200620097629 U CN 200620097629U CN 200940606 Y CN200940606 Y CN 200940606Y
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- valve
- way
- oil circuit
- controlled
- hydraulically
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Abstract
The utility model relates to a stationary blade controlling system, comprises a proportion adjustment valve (1) and a servo valve (2). The rotation angle of the stationary blade (3) is controlled by an output bar (201) of the servo valve (2). The proportion adjustment valve (1) comprises an oil inlet pipe (101), an oil outlet pipe (102) and an oil loading pipe (103) which is connected with the servo valve (2). A valve is arranged on the oil loading pipe (103) of the proportion adjustment valve. The utility model is provided with a valve on the oil loading pipe (103) of the proportion adjustment valve, when the stationary blade controlling system occurs fault, the valve can close the oil loading pipe, so the servo valve is locked and avoided from being uncontrollable and the difference between the stationary blade angel and the set value is not too large. The stop of the blasting unit of a blast furnace caused by surge or countercurrent is avoided, thus the influence on the blast furnace producing is reduced and the safety of the blast furnace blasting unit is dramatically improved.
Description
Technical field
The utility model relates to the blast furnace air unit, is specifically related to the hydraulic control system of the stator blade of blast furnace air unit, particularly stator blade.
Background technique
Existing blast furnace air unit stator blade control system, as AV type stator blade control system (see figure 5), it comprises: ratio adjusting valve 1 (as MOOG valve etc.), servovalve 2, ratio adjusting valve 1 comprises that into and out of 101,102 and two load oil circuits 103 of oil circuit load oil circuit 103 is communicated with servovalve 2.The rotation angle of the take-off lever 201 control stator blades 3 of servovalve 2.
Existing blast furnace air unit stator blade control system, its ratio adjusting valve 1 are by controller control, and ratio adjusting valve 1 is regulated stator blade 3 angles by servovalve 2, reaches suitable air quantity.But when the stator blade control system breaks down; servovalve can be in runaway condition, makes static blade angle and setting value deviation bigger or out of control fully, thereby causes the blast furnace air unit because of surge or adverse current shutdown; production impacts to blast furnace, also can cause the damage of blower unit when serious.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of stator blade control system is provided, and this system can lock stator blade when breaking down, thereby effectively guarantees the safety of axial flow blast furnace blower.
The utility model solves the problems of the technologies described above the technological scheme that is adopted:
A kind of stator blade control system, it comprises: ratio adjusting valve, servovalve, the rotation angle of the take-off lever control stator blade of servovalve; Ratio adjusting valve comprises that the load oil circuit is communicated with servovalve into and out of oil circuit and load oil circuit; Ratio adjusting valve load oil circuit is provided with valve.
In the such scheme, valve is the hydraulically-controlled one-way valve by its two-way admittance of hydraulic control or unidirectional conducting, and the hydraulically-controlled one-way valve on the ratio adjusting valve load oil circuit prevents the oil of servovalve to be back to ratio adjusting valve when unidirectional on state; Hydraulically-controlled one-way valve is controlled by hydraulic control device.
In the such scheme, hydraulic control device is two position four-way solenoid valves that have into and out of oil circuit and two-way output circuit, wherein one road output circuit is a control oil channel, and the control end of the hydraulically-controlled one-way valve on control oil channel and the ratio adjusting valve load oil circuit is communicated with, and another road output circuit is shut.
In the such scheme, two position four-way solenoid valves into and out of oil circuit respectively with being communicated with of ratio adjusting valve into and out of oil circuit.
In the such scheme, the in-line of ratio adjusting valve is provided with hydraulically-controlled one-way valve, and the hydraulically-controlled one-way valve on the in-line prevents the oil of in-line to enter ratio adjusting valve when unidirectional on state, and the hydraulically-controlled one-way valve control end on the in-line is communicated with control oil channel.
In the such scheme, control system also comprises three position four-way electromagnetic valve, and three position four-way electromagnetic valve is provided with into and out of oil circuit and two-way load oil circuit, and the load oil circuit is communicated with servovalve, into and out of being communicated with into and out of oil circuit of oil circuit and ratio adjusting valve; Be respectively equipped with hydraulically-controlled one-way valve on the two-way load oil circuit of three position four-way electromagnetic valve, the control end of the hydraulically-controlled one-way valve on the three position four-way electromagnetic valve load oil circuit is communicated with three position four-way electromagnetic valve load oil circuit; Hydraulically-controlled one-way valve on the three position four-way electromagnetic valve load oil circuit prevents the oil of servovalve to be back to three position four-way electromagnetic valve when unidirectional on state.
Compared with prior art, the utlity model has following advantage:
1, the load oil circuit at ratio adjusting valve is provided with valve; when the stator blade control system breaks down; valve can be closed the load oil circuit; thereby locking servovalve; make servovalve out-of-control phenomenon can not occur, make static blade angle and the setting value deviation can be not excessive, avoided the blast furnace air unit to shut down because of surge or adverse current; reduced that production impacts to blast furnace, greatly improved the Security of blower unit operation.
2, valve is a hydraulically-controlled one-way valve, can control easily by hydraulic control device, makes whole system all by oil circuit control simultaneously, and can make full use of the oil circuit and the control unit of original stator blade control system.
3, two solenoid valves into and out of oil circuit respectively with being communicated with of ratio adjusting valve into and out of oil circuit, simple in structure, only need a cover oil feeding system.
4, control system also comprises three position four-way electromagnetic valve, and in the load Fuel path lock timing of ratio adjusting valve, system can control the stator blade aperture by three position four-way electromagnetic valve, makes native system change relevant devices under non-stop-machine situation, needs to guarantee to produce.
Description of drawings
Fig. 1 is the utility model stator blade control system example structure schematic representation
Fig. 2 is the structural representation of the utility model stator blade control system embodiment normal operating condition
Fig. 3,4 is the structural representation of the utility model stator blade control system embodiment three position four-way electromagnetic valve working state
Fig. 5 is the structural representation of existing stator blade control system
The direction of arrow among the figure is the trend of oil in the oil circuit.
Embodiment
The utility model stator blade control system embodiment as shown in Figure 1, it is the AV profile shaft flow fan stator blade control system with AutoLock feature, it comprises: ratio adjusting valve 1, servovalve 2; Ratio adjusting valve 1 is the MOOG valve of 4-20mA current signal input.Ratio adjusting valve 1 comprises that load oil circuit 103 is communicated with servovalve 2 respectively into and out of oil circuit 101,102 and two-way load oil circuit 103.Be respectively equipped with valve on the load oil circuit 103, valve is the hydraulically-controlled one-way valve 4 by its two-way admittance of hydraulic control or unidirectional conducting.Hydraulically-controlled one-way valve 4 on the ratio adjusting valve load oil circuit 103 prevents the oil of servovalve 2 to be back to ratio adjusting valve 1 when unidirectional on state.Hydraulically-controlled one-way valve 4 is controlled by hydraulic control device.
Hydraulic control device is two position four-way solenoid valves 5 that have into and out of oil circuit 501,502 and two-way output circuit, wherein one road output circuit is a control oil channel 503, the control end of the hydraulically-controlled one-way valve 4 on control oil channel 503 and the ratio adjusting valve load oil circuit 103 is communicated with, and another road output circuit is shut.
The in-line 101 of ratio adjusting valve 1 is provided with hydraulically-controlled one-way valve 4, hydraulically-controlled one-way valve 4 on the in-line 101 prevents the oil of in-line 101 to enter ratio adjusting valve 1 when unidirectional on state, and hydraulically-controlled one-way valve 4 control ends on the in-line 101 are communicated with control oil channel 503.
Control system also comprises manual three position four-way electromagnetic valve 6, three position four-way electromagnetic valve 6 is provided with into and out of oil circuit 601,602 and two-way load oil circuit 603, load oil circuit 603 is communicated with servovalve 2 respectively, into and out of oil circuit 601,602 respectively with being communicated with of ratio adjusting valve 1 into and out of oil circuit 101,102; Be respectively equipped with hydraulically-controlled one-way valve 4 on the two-way load oil circuit 603 of three position four-way electromagnetic valve 6, the control oil channel of the hydraulically-controlled one-way valve 4 on the three position four-way electromagnetic valve load oil circuit 603 is communicated with three position four-way electromagnetic valve load oil circuit 603; Hydraulically-controlled one-way valve 4 on the three position four-way electromagnetic valve load oil circuit 603 prevents the oil of servovalve 2 to be back to three position four-way electromagnetic valve 6 when unidirectional on state.
Also increase a valve 7 on the vent line 102 of ratio adjusting valve 1, the oil mass that can adjust ratio adjusting valve 1 is accurate, thereby can control the blower unit stator blade more accurately.
The utility model stator blade control system embodiment's working principle is:
Respectively increasing a hydraulically-controlled one-way valve 4 on the MOOG valve in-line 101 and on two load oil circuits 103, each one-way valve 4 opens and closes by 5 controls of two solenoid valves.As shown in Figure 2, when the unit proper functioning, two solenoid valves 5 electric, three one-way valve two-way admittances make MOOG valve proper functioning.Three position four-way electromagnetic valve 6 dead electricity, in-line 601 is shut, the hydraulically-controlled one-way valve 4 unidirectional conductings on the three position four-way electromagnetic valve load oil circuit 603, three position four-way electromagnetic valve 6 does not participate in stator blade control.
Shown in Fig. 3,4, when stator blade control system fault appears in unit, two solenoid valve 5 dead electricity, with three unidirectional conductings of one-way valve, hydraulically-controlled one-way valve 4 on the ratio adjusting valve in-line 101 prevents the oil of in-line 101 to enter ratio adjusting valve 1, hydraulically-controlled one-way valve 4 on the ratio adjusting valve load oil circuit 103 prevents the oil of servovalves 2 to be back to ratio adjusting valve 1, makes the effect out of hand of MOOG valve, and with servovalve 2 lockings.
At this moment, can pass through three position four-way electromagnetic valve 6, with hydraulically-controlled one-way valve 4 two-way admittances on the three position four-way electromagnetic valve load oil circuit 603, three position four-way electromagnetic valve 6 gets the control of electrical receivership stator blade, the unit static blade angle is carried out manual coarse adjustment, to satisfy the production of blast furnace.
When three position four-way electromagnetic valve 6 states of living in as shown in Figure 3 the time, the take-off lever 201 of servovalve 2 moves right, and when three position four-way electromagnetic valve 6 states of living in as shown in Figure 4 the time, the take-off lever 201 of servovalve 2 moves left.
The utility model stator blade control system embodiment is by adopting the hydraulic lock mode, the inlet and outlet of fuel channel and the load oil circuit of control MOOG valve.When axial-flow blower was in normal working, hydraulically-controlled one-way valve was in the two-way admittance state, and the MOOG valve is in time regulated static blade angle with regulator signal and loading condition, reaches suitable air quantity.When (certain control unit breaks down in the control system owing to extraordinary cause, or other disturbing factors) make static blade angle and setting value deviation bigger or complete when out of control, two position four-way solenoid valves, 5 dead electricity, cut off the inlet and outlet of fuel channel and the load oil circuit of MOOG valve, immediately stator blade is locked on the spot, at this moment stator blade is not subjected to the control of MOOG valve.At this moment,, can start three position four-way electromagnetic valve 6, static blade angle be revised with a flowing mode if static blade angle and desired positional deviation are bigger.Promptly by manually making two electromagnet energising of three position four-way electromagnetic valve 6, take-off lever 201 left and right the moving of control servovalve 2 increase static blade angle or reduce, and reach appointed positions, so that stator blade can be not out of control fully, avoid axial-flow blower to damage.
The utility model stator blade control system embodiment's MOOG valve servocontrol oil circuit and three position four-way electromagnetic valve 6 are regulated oil circuit use in parallel, by the switching of hydraulic lock, can not can interfere with each other between two kinds of working staties.
Claims (6)
1, a kind of stator blade control system, it comprises: ratio adjusting valve (1), servovalve (2), the rotation angle of take-off lever (201) the control stator blade (3) of servovalve (2); Ratio adjusting valve (1) comprises that into and out of oil circuit (101,102) and load oil circuit (103), load oil circuit (103) is communicated with servovalve (2); It is characterized in that: ratio adjusting valve load oil circuit (103) is provided with valve.
2, control system as claimed in claim 1, it is characterized in that: valve is the hydraulically-controlled one-way valve (4) by its two-way admittance of hydraulic control or unidirectional conducting, and the hydraulically-controlled one-way valve (4) on the ratio adjusting valve load oil circuit (103) prevents the oil of servovalve (2) to be back to ratio adjusting valve (1) when unidirectional on state; Hydraulically-controlled one-way valve (4) is controlled by hydraulic control device.
3, control system as claimed in claim 2, it is characterized in that: hydraulic control device is for to have into and out of two position four-way solenoid valves (5) of oil circuit (501,502) and two-way output circuit, wherein one road output circuit is control oil channel (503), the control end of the hydraulically-controlled one-way valve (4) on control oil channel (503) and the ratio adjusting valve load oil circuit (103) is communicated with, and another road output circuit is shut.
4, control system as claimed in claim 3 is characterized in that: two position four-way solenoid valves (5) into and out of oil circuit (501,502) respectively with being communicated with of ratio adjusting valve (1) into and out of oil circuit (101,102).
5, control system as claimed in claim 3, it is characterized in that: the in-line (101) of ratio adjusting valve (1) is provided with hydraulically-controlled one-way valve (4), hydraulically-controlled one-way valve (4) on the in-line (101) prevents the oil of in-line (101) to enter ratio adjusting valve (1) when unidirectional on state, and hydraulically-controlled one-way valve (4) control end on the in-line (101) is communicated with control oil channel (503).
6, control system as claimed in claim 1, it is characterized in that: control system also comprises three position four-way electromagnetic valve (6), three position four-way electromagnetic valve (6) is provided with into and out of oil circuit (601,602) and two-way load oil circuit (603), load oil circuit (603) is communicated with servovalve (2), into and out of being communicated with into and out of oil circuit (101,102) of oil circuit (601,602) and ratio adjusting valve (1); Be respectively equipped with hydraulically-controlled one-way valve (4) on the two-way load oil circuit (603) of three position four-way electromagnetic valve (6), the control oil channel of the hydraulically-controlled one-way valve (4) on the three position four-way electromagnetic valve load oil circuit (603) is communicated with three position four-way electromagnetic valve load oil circuit (603); Hydraulically-controlled one-way valve (4) on the three position four-way electromagnetic valve load oil circuit (603) prevents the oil of servovalve (2) to be back to three position four-way electromagnetic valve (6) when unidirectional on state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620097629 CN200940606Y (en) | 2006-07-04 | 2006-07-04 | Static blade control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620097629 CN200940606Y (en) | 2006-07-04 | 2006-07-04 | Static blade control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200940606Y true CN200940606Y (en) | 2007-08-29 |
Family
ID=38746783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620097629 Expired - Fee Related CN200940606Y (en) | 2006-07-04 | 2006-07-04 | Static blade control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200940606Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833694A (en) * | 2020-06-08 | 2021-12-24 | 中国航发商用航空发动机有限责任公司 | Control system and control method for adjustable stationary blade assembly of gas compressor, storage medium and test bench |
-
2006
- 2006-07-04 CN CN 200620097629 patent/CN200940606Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833694A (en) * | 2020-06-08 | 2021-12-24 | 中国航发商用航空发动机有限责任公司 | Control system and control method for adjustable stationary blade assembly of gas compressor, storage medium and test bench |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070829 Termination date: 20150704 |
|
| EXPY | Termination of patent right or utility model |