CN201635929U - Direct-drive volume control type pitch system of wind-driven generator - Google Patents
Direct-drive volume control type pitch system of wind-driven generator Download PDFInfo
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- CN201635929U CN201635929U CN2009203533977U CN200920353397U CN201635929U CN 201635929 U CN201635929 U CN 201635929U CN 2009203533977 U CN2009203533977 U CN 2009203533977U CN 200920353397 U CN200920353397 U CN 200920353397U CN 201635929 U CN201635929 U CN 201635929U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The utility model relates to a direct-drive volume control type pitch system of a wind-driven generator, belonging to the technical field of wind turbine pitch systems, solving the technical problems of low feathering response speed and high cost. The pitch system comprises an energy storage loop and a propeller pump control loop. The energy storage loop comprises a hydraulic safety valve, an energy storage pump motor, an energy storage pump, an oil storage accumulator, a high pressure accumulator and a quick-closing electromagnetic valve. The propeller pump control loop comprises a servo motor, pitch oil cylinders, a bidirectional pump and five hydraulic check valves. The pitch oil cylinder is used for driving the blade of the wind-driven generator to vary pitch. The servo motor controls the pitch oil cylinder to operate through the bidirectional pump to further control the normal pitch variation of the wind-driven generator. When the wind-driven generator is required to be feathered rapidly, the energy storage loop directly supplies oil to the pitch oil cylinders. The utility model has the advantages of rapid feathering response speed and lower system cost.
Description
Technical field
The utility model relates to the technology of blower variable-pitch system, particularly relates to a kind of technology that is used for the direct drive type volume control variable-pitch system of wind-driven generator.
Background technique
Existing blower variable-pitch system mainly contains " driven by servomotor gear pair pitch-controlled system " and " servovalve driving oil cylinder hydraulic variable propeller system ";
" driven by servomotor gear pair pitch-controlled system " becomes the oar actuating motor by servocontroller control and moves when the control blower variable-pitch, and change oar actuating motor drives gearwheel by small gear and rotates, and drives blade rotation realization by gearwheel and becomes oar; This pitch-controlled system has quick feathering speed of response and reaches the shortcoming of storage battery at low temperature situation job insecurity slowly, and owing to become the cost of oar actuating motor and gear pair and be directly proportional, so use the cost of high-power blower of this change slurry system all higher with power of fan.
" servovalve driving oil cylinder hydraulic variable propeller system " by the operation of servovalve control oil cylinder, drives the blade rotation by oil cylinder and realizes becoming oar when the control blower variable-pitch; This pitch-controlled system has the fast advantage of quick feathering speed of response, but has following defective: 1) independent oil sources need be set, be the pitch-controlled system fuel feeding by independent oil sources by swivel joint, and its cost is higher; 2) cost of servovalve is higher, and servovalve is also very high to the requirement of oily turbidity test, therefore need be equipped with a lot of filtrating equipments in system; 3) do not have a lot of throttle elements in the hydraulic main circuit of this system, pressure loss is very big during work, and the heat that produces when therefore working is higher, needs to be equipped with cooling system; 4) swivel joint in this pitch-controlled system has the shortcoming of easy leakage of oil, and its reliability is relatively poor.
The model utility content
At the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides fast, the reliable and stable and with low cost direct drive type volume control variable-pitch system that is used for wind-driven generator of a kind of quick feathering speed of response.
In order to solve the problems of the technologies described above, a kind of direct drive type volume control variable-pitch system that is used for wind-driven generator provided by the utility model is characterized in that: comprise accumulation of energy loop and propeller pump control loop;
Described accumulation of energy loop comprises pilot safety valve, storage pump motor, storage pump, at least one oil storage accumulator, at least one high pressure accumulator and quick closing valve solenoid valve;
Described pilot safety valve has a control port, a filler opening and an oil outlet; Described quick closing valve solenoid valve has a return opening, a filler opening and an oil outlet, and its filler opening connects the filler opening of pilot safety valve, and its oil outlet first quarter stream valve connects the control port of pilot safety valve;
The filler opening of described pilot safety valve connects the return opening of quick closing valve solenoid valve through a relief valve, and is connected to a upward pressure switch and a downforce switch; Described upward pressure switch is connected with the downforce switch and controls the operation of storage pump motor, and wherein the upward pressure switch is used to cut out the storage pump motor, and the downforce switch is used to open the storage pump motor;
Described storage pump motor connects and the operation of control storage pump, the filler opening of described storage pump is often opened the return opening that the oil suction stop valve is connected to the quick closing valve solenoid valve through one, and being provided with a normally closed oil cut-off valve that adds that is used to connect outside oil sources, its oil outlet is connected to the filler opening of pilot safety valve successively through an one-way valve, a filter;
Each is connected to the return opening of quick closing valve solenoid valve described each oil storage accumulator through an oil storage stop valve; Each is connected to the return opening of quick closing valve solenoid valve through the stop valve of draining the oil described each high pressure accumulator, and each connects the filler opening of pilot safety valve through an oil-feed stop valve;
The return opening of described quick closing valve solenoid valve is connected to reservoir pressure table and reservoir pressure sensor;
Described propeller pump control loop comprises actuating motor, becomes oar oil cylinder, two-way pump, first Pilot operated check valve, second Pilot operated check valve, the 3rd Pilot operated check valve, the 4th Pilot operated check valve and the 5th Pilot operated check valve;
Described change oar oil cylinder has two active chambers, and one of them active chamber is a rod chamber, and another active chamber is a rodless cavity, and its piston rod is located in the rod chamber;
Described actuating motor connects and the operation of control two-way pump, and described two-way pump has two hydraulic fluid ports, is respectively first hydraulic fluid port and second hydraulic fluid port; Its first hydraulic fluid port connects the rodless cavity that becomes the oar oil cylinder through first Pilot operated check valve, and its second hydraulic fluid port connects the rod chamber that becomes the oar oil cylinder through second Pilot operated check valve;
The return opening of described quick closing valve solenoid valve connects the rod chamber that becomes the oar oil cylinder through the 3rd Pilot operated check valve, and first quarter stream valve connects the oil outlet of pilot safety valve, through first hydraulic fluid port of the 4th Pilot operated check valve connection two-way pump, connect second hydraulic fluid port of two-way pump through the 5th Pilot operated check valve;
The control port of described first Pilot operated check valve and the 4th Pilot operated check valve is connected second hydraulic fluid port of two-way pump, the control port of described second Pilot operated check valve and the 5th Pilot operated check valve is connected first hydraulic fluid port of two-way pump, and the control port of described the 3rd Pilot operated check valve connects the oil outlet of pilot safety valve;
The oil outlet of described pilot safety valve connects the rodless cavity that becomes the oar oil cylinder through a quick oil feeding one-way valve;
Two active chambers of described change oar oil cylinder respectively are connected to an oil cylinder working-pressure sensor;
Described propeller pump control loop has at least one, a blade of the corresponding control in each propeller pump control loop wind-driven generator, and each propeller pump control loop is connected with each other;
An angular displacement sensor that is used to detect the propeller pitch angle of this blade all is housed on each blade of described wind-driven generator, and described angular displacement sensor connects and controls actuating motor operation in its corresponding propeller pump control loop through a demodulator, a servoamplifier.
Further, the filler opening of described pilot safety valve is connected to a high-pressure manometer.
Further, described accumulation of energy loop is provided with oil storage pressure tap and high pressure pressure tap, and described oil storage pressure tap is through the return opening of one-way valve connection quick closing valve solenoid valve, and described high pressure pressure tap connects the filler opening of pilot safety valve through an one-way valve.
The direct drive type volume control variable-pitch system that is used for wind-driven generator that the utility model provides has following beneficial effect:
1) by directly realize the quick feathering of wind-driven generator by the accumulation of energy loop, has the fast characteristics of feathering speed of response to the mode of each change oar oil cylinder fuel feeding; 2) because the normal change oar of this system by actuating motor, two-way pump control wind-driven generator, its hydraulic main circuit is a closed circuit, system with oil mass seldom and be subjected to the outside contamination chance less, operation stability and good reliability; 3) owing to do not have sensing element in this system, therefore do not need to be equipped with independent oil sources, also do not need to be equipped with a lot of filtrating equipments, system cost is lower; 4) owing to do not have throttle element in the hydraulic main circuit in this system, pressure loss is very little, the heat that produces when therefore working seldom, system can not need to be equipped with cooling system from heat radiation, system cost is lower; 5) this system is in inoperative during the cycle (pressurize operating mode and idle running operating mode) consumed energy hardly, and its operating cost is very low.
Description of drawings
Fig. 1 is the hydraulic diagram in accumulation of energy loop of the utility model embodiment's the direct drive type volume control variable-pitch system that is used for wind-driven generator;
Fig. 2 is the hydraulic diagram in propeller pump control loop of the utility model embodiment's the direct drive type volume control variable-pitch system that is used for wind-driven generator.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model is described in further detail, but present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection domain of the present utility model in.
In the utility model embodiment's the accompanying drawing, the contact Q1 among Fig. 1 is connected with contact Q1 among Fig. 2, and the contact Q2 among Fig. 1 is connected with contact Q2 among Fig. 2;
A kind of direct drive type volume control variable-pitch system that is used for wind-driven generator that the utility model embodiment is provided is characterized in that: comprise accumulation of energy loop and propeller pump control loop;
As shown in Figure 1, described accumulation of energy loop comprises pilot safety valve CTV3, storage pump motor EM1, storage pump PM0, three oil storage accumulator N4, N5, N6, three high pressure accumulator N1, N2, N3 and quick closing valve solenoid valve CCF;
Described pilot safety valve CTV3 has a control port, a filler opening and an oil outlet; Described quick closing valve solenoid valve CCF has a return opening, a filler opening and an oil outlet, and its filler opening connects the filler opening of pilot safety valve CTV3, and its oil outlet first quarter stream valve ORI2 connects the control port of pilot safety valve CTV3;
The filler opening of described pilot safety valve CTV3 connects the return opening of quick closing valve solenoid valve CCF through a relief valve RF, and is connected to a upward pressure switch P S1 and a downforce switch P S2; Described upward pressure switch P S1 is connected with downforce switch P S2 and controls storage pump motor EM1 operation, and wherein upward pressure switch P S1 is used to close storage pump motor EM1, and downforce switch P S2 is used to open storage pump motor EM1;
Described storage pump motor EM1 connects and control storage pump PM0 operation, the filler opening of described storage pump PM0 is often opened the return opening that oil suction stop valve SH2 is connected to quick closing valve solenoid valve CCF through one, and being provided with a normally closed oil cut-off valve SH1 that adds that is used to connect outside oil sources, its oil outlet is connected to the filler opening of pilot safety valve CTV3 successively through an one-way valve R0, a filter F L;
Each is connected to the return opening of quick closing valve solenoid valve CCF described each oil storage accumulator through an oil storage stop valve; Each is connected to the return opening of quick closing valve solenoid valve CCF through the stop valve of draining the oil described each high pressure accumulator, and each connects the filler opening of pilot safety valve CTV3 through an oil-feed stop valve;
The return opening of described quick closing valve solenoid valve CCF is connected to reservoir pressure table M2 and reservoir pressure sensor I0;
As shown in Figure 2, described wind-driven generator has three blades, be respectively the first blade JY1, the second blade JY2, the 3rd blade JY3,, described propeller pump control loop has three, a blade of the corresponding control in each propeller pump control loop wind-driven generator, each propeller pump control loop is connected with each other;
First propeller pump control loop comprises actuating motor SM1, becomes oar oil cylinder CY1, two-way pump PM1, the first Pilot operated check valve R11, the second Pilot operated check valve R12, the 3rd Pilot operated check valve R13, the 4th Pilot operated check valve R14 and the 5th Pilot operated check valve R15;
Described change oar oil cylinder CY1 has two active chambers, and one of them active chamber is a rod chamber, and another active chamber is a rodless cavity, and its piston rod is located in the rod chamber;
Described actuating motor SM1 connects and control two-way pump PM1 operation, and described two-way pump PM1 has two hydraulic fluid ports, is respectively first hydraulic fluid port and second hydraulic fluid port; Its first hydraulic fluid port connects the rodless cavity that becomes oar oil cylinder CY1 through the first Pilot operated check valve R11, and its second hydraulic fluid port connects the rod chamber that becomes oar oil cylinder CY1 through the second Pilot operated check valve R12;
The return opening of described quick closing valve solenoid valve CCF connects the rod chamber that becomes oar oil cylinder CY1 through the 3rd Pilot operated check valve R13, and first quarter stream valve ORI1 connects the oil outlet of pilot safety valve CTV3, through first hydraulic fluid port of the 4th Pilot operated check valve R14 connection two-way pump PM1, connect second hydraulic fluid port of two-way pump PM1 through the 5th Pilot operated check valve R15;
The control port of described first Pilot operated check valve R11 and the 4th Pilot operated check valve R14 is connected second hydraulic fluid port of two-way pump PM1, the control port of described second Pilot operated check valve R12 and the 5th Pilot operated check valve R15 is connected first hydraulic fluid port of two-way pump PM1, and the control port of described the 3rd Pilot operated check valve R13 connects the oil outlet of pilot safety valve CTV3;
The oil outlet of described pilot safety valve CTV3 connects the rodless cavity that becomes oar oil cylinder CY1 through a quick oil feeding one-way valve R16;
The rodless cavity of described change oar oil cylinder CY1 is connected to an oil cylinder working-pressure sensor I11, and its rod chamber is connected to an oil cylinder working-pressure sensor I12;
An angular displacement sensor C1 who is used to detect the propeller pitch angle of this blade is housed on the first blade JY1 of described wind-driven generator, and described angular displacement sensor C1 connects and control actuating motor SM1 operation through a demodulator TD1, a servoamplifier S1;
Second propeller pump control loop comprises actuating motor SM2, becomes oar oil cylinder CY2, two-way pump PM2, the first Pilot operated check valve R21, the second Pilot operated check valve R22, the 3rd Pilot operated check valve R23, the 4th Pilot operated check valve R24 and the 5th Pilot operated check valve R25;
Described change oar oil cylinder CY2 has two active chambers, and one of them active chamber is a rod chamber, and another active chamber is a rodless cavity, and its piston rod is located in the rod chamber;
Described actuating motor SM2 connects and control two-way pump PM2 operation, and described two-way pump PM2 has two hydraulic fluid ports, is respectively first hydraulic fluid port and second hydraulic fluid port; Its first hydraulic fluid port connects the rodless cavity that becomes oar oil cylinder CY2 through the first Pilot operated check valve R21, and its second hydraulic fluid port connects the rod chamber that becomes oar oil cylinder CY2 through the second Pilot operated check valve R22;
The return opening of described quick closing valve solenoid valve CCF connect to become the rod chamber of oar oil cylinder CY2 through the 3rd Pilot operated check valve R23, and connects first hydraulic fluid port of two-way pump PM2 through the 4th Pilot operated check valve R24, connects second hydraulic fluid port of two-way pump PM2 through the 5th Pilot operated check valve R25;
The control port of described first Pilot operated check valve R21 and the 4th Pilot operated check valve R24 is connected second hydraulic fluid port of two-way pump PM2, the control port of described second Pilot operated check valve R22 and the 5th Pilot operated check valve R25 is connected first hydraulic fluid port of two-way pump PM2, and the control port of described the 3rd Pilot operated check valve R23 connects the oil outlet of pilot safety valve CTV3;
The oil outlet of described pilot safety valve CTV3 connects the rodless cavity that becomes oar oil cylinder CY2 through a quick oil feeding one-way valve R26;
The rodless cavity of described change oar oil cylinder CY2 is connected to an oil cylinder working-pressure sensor I21, and its rod chamber is connected to an oil cylinder working-pressure sensor I22;
An angular displacement sensor C2 who is used to detect the propeller pitch angle of this blade is housed on the first blade JY2 of described wind-driven generator, and described angular displacement sensor C2 connects and control actuating motor SM2 operation through a demodulator TD2, a servoamplifier S2;
The 3rd propeller pump control loop comprises actuating motor SM3, becomes oar oil cylinder CY3, two-way pump PM3, the first Pilot operated check valve R31, the second Pilot operated check valve R32, the 3rd Pilot operated check valve R33, the 4th Pilot operated check valve R34 and the 5th Pilot operated check valve R35;
Described change oar oil cylinder CY3 has two active chambers, and one of them active chamber is a rod chamber, and another active chamber is a rodless cavity, and its piston rod is located in the rod chamber;
Described actuating motor SM3 connects and control two-way pump PM3 operation, and described two-way pump PM3 has two hydraulic fluid ports, is respectively first hydraulic fluid port and second hydraulic fluid port; Its first hydraulic fluid port connects the rodless cavity that becomes oar oil cylinder CY3 through the first Pilot operated check valve R31, and its second hydraulic fluid port connects the rod chamber that becomes oar oil cylinder CY3 through the second Pilot operated check valve R32;
The return opening of described quick closing valve solenoid valve CCF connect to become the rod chamber of oar oil cylinder CY3 through the 3rd Pilot operated check valve R33, and connects first hydraulic fluid port of two-way pump PM3 through the 4th Pilot operated check valve R34, connects second hydraulic fluid port of two-way pump PM3 through the 5th Pilot operated check valve R35;
The control port of described first Pilot operated check valve R31 and the 4th Pilot operated check valve R34 is connected second hydraulic fluid port of two-way pump PM3, the control port of described second Pilot operated check valve R32 and the 5th Pilot operated check valve R35 is connected first hydraulic fluid port of two-way pump PM3, and the control port of described the 3rd Pilot operated check valve R33 connects the oil outlet of pilot safety valve CTV3;
The oil outlet of described pilot safety valve CTV3 connects the rodless cavity that becomes oar oil cylinder CY3 through a quick oil feeding one-way valve R36;
The rodless cavity of described change oar oil cylinder CY3 is connected to an oil cylinder working-pressure sensor I31, and its rod chamber is connected to an oil cylinder working-pressure sensor I32;
An angular displacement sensor C3 who is used to detect the propeller pitch angle of this blade is housed on the first blade JY3 of described wind-driven generator, and described angular displacement sensor C3 connects and control actuating motor SM3 operation through a demodulator TD3, a servoamplifier S3;
Among the utility model embodiment, the filler opening of described pilot safety valve CTV3 is connected to a high-pressure manometer M1 (referring to Fig. 1);
Among the utility model embodiment, described accumulation of energy loop is provided with oil storage pressure tap PT4 and high pressure pressure tap PT5, described oil storage pressure tap PT4 is through the return opening of one-way valve connection quick closing valve solenoid valve CCF, and described high pressure pressure tap PT5 connects the filler opening of pilot safety valve CTV3 through an one-way valve.
The utility model embodiment's working principle is as follows:
When pressure switch PS2 detects pressure in the accumulation of energy loop and drops to 20Mpa instantly, promptly send actuating signal to storage pump motor EM1, storage pump motor EM1 receives that promptly to control storage pump PM0 operation after the actuating signal oil-filled to the accumulation of energy loop; When upward pressure switch P S1 detects pressure in the accumulation of energy loop and rises to 21Mpa, promptly send stop signal to storage pump motor EM1, storage pump motor EM1 receives that promptly to control storage pump PM1 after the stop signal out of service; When the pressure in the accumulation of energy loop surpassed 21Mpa, pressure was by relief valve RF overflow, thereby provided overvoltage protection for system; When system need replenish hydraulic oil, earlier outside oil sources is connected to the normally closed oil cut-off valve SH1 that adds of storage pump PM0 filler opening, open this normally closed oil cut-off valve SH1 that adds then and can replenish hydraulic oil;
During normal the operation, quick closing valve solenoid valve CCF is in "on" position, this moment, its filler opening was communicated with its oil outlet, high pressure oil in the high pressure accumulator is loaded on the control port of pilot safety valve CTV3 through quick closing valve solenoid valve CCF, make pilot safety valve CTV3 close, this moment, the accumulation of energy loop was not to each propeller pump control loop fuel feeding; Change oar by each each blade of propeller pump control circuit controls wind-driven generator;
The principle of three propeller pump control circuit controls blade change oars is similar, with first propeller pump control loop is example, when the propeller pitch angle that detects this blade as the angular displacement sensor C1 on the first blade JY1 of wind-driven generator changes, by demodulator TD1, one servoamplifier S1 passes to actuating motor SM1 with the propeller pitch angle changing value of this blade, actuating motor SM1 is according to the propeller pitch angle changing value control two-way pump PM1 forward or reverse of this blade, and then the control piston rod that becomes oar oil cylinder CY1 stretches out or withdraw, drives the first blade JY1 by the piston rod that becomes oar oil cylinder CY1 and realizes the change oar;
When wind-driven generator runs into the quick feathering of urgency needs, quick closing valve solenoid valve CCF is in power failure state, this moment, its return opening was communicated with its oil outlet, the control port decompression of pilot safety valve CTV3, make pilot safety valve CTV3 conducting, high pressure oil in the high pressure accumulator is loaded in the rodless cavity that respectively becomes the oar oil cylinder through the quick oil feeding one-way valve in pilot safety valve CTV3 and each propeller pump control loop, each hydraulic oil that becomes in the rod chamber of oar oil cylinder is back to each oil storage accumulator by each the 3rd Pilot operated check valve, make the piston rod that respectively becomes the oar oil cylinder stretch out fast, thereby drive the quick feathering of each blade;
When oil impregnate took place pilot safety valve CTV3, throttle valve ORI1 can prevent that the 3rd Pilot operated check valve in each propeller pump control loop from opening, and guarantees the normal change oar of system.
Claims (3)
1. a direct drive type volume control variable-pitch system that is used for wind-driven generator is characterized in that: comprise accumulation of energy loop and propeller pump control loop;
Described accumulation of energy loop comprises pilot safety valve, storage pump motor, storage pump, at least one oil storage accumulator, at least one high pressure accumulator and quick closing valve solenoid valve;
Described pilot safety valve has a control port, a filler opening and an oil outlet; Described quick closing valve solenoid valve has a return opening, a filler opening and an oil outlet, and its filler opening connects the filler opening of pilot safety valve, and its oil outlet first quarter stream valve connects the control port of pilot safety valve;
The filler opening of described pilot safety valve connects the return opening of quick closing valve solenoid valve through a relief valve, and is connected to a upward pressure switch and a downforce switch; Described upward pressure switch is connected with the downforce switch and controls the operation of storage pump motor, and wherein the upward pressure switch is used to cut out the storage pump motor, and the downforce switch is used to open the storage pump motor;
Described storage pump motor connects and the operation of control storage pump, the filler opening of described storage pump is often opened the return opening that the oil suction stop valve is connected to the quick closing valve solenoid valve through one, and being provided with a normally closed oil cut-off valve that adds that is used to connect outside oil sources, its oil outlet is connected to the filler opening of pilot safety valve successively through an one-way valve, a filter;
Each is connected to the return opening of quick closing valve solenoid valve described each oil storage accumulator through an oil storage stop valve; Each is connected to the return opening of quick closing valve solenoid valve through the stop valve of draining the oil described each high pressure accumulator, and each connects the filler opening of pilot safety valve through an oil-feed stop valve;
The return opening of described quick closing valve solenoid valve is connected to reservoir pressure table and reservoir pressure sensor;
Described propeller pump control loop comprises actuating motor, becomes oar oil cylinder, two-way pump, first Pilot operated check valve, second Pilot operated check valve, the 3rd Pilot operated check valve, the 4th Pilot operated check valve and the 5th Pilot operated check valve;
Described change oar oil cylinder has two active chambers, and one of them active chamber is a rod chamber, and another active chamber is a rodless cavity, and its piston rod is located in the rod chamber;
Described actuating motor connects and the operation of control two-way pump, and described two-way pump has two hydraulic fluid ports, is respectively first hydraulic fluid port and second hydraulic fluid port; Its first hydraulic fluid port connects the rodless cavity that becomes the oar oil cylinder through first Pilot operated check valve, and its second hydraulic fluid port connects the rod chamber that becomes the oar oil cylinder through second Pilot operated check valve;
The return opening of described quick closing valve solenoid valve connects the rod chamber that becomes the oar oil cylinder through the 3rd Pilot operated check valve, and first quarter stream valve connects the oil outlet of pilot safety valve, through first hydraulic fluid port of the 4th Pilot operated check valve connection two-way pump, connect second hydraulic fluid port of two-way pump through the 5th Pilot operated check valve;
The control port of described first Pilot operated check valve and the 4th Pilot operated check valve is connected second hydraulic fluid port of two-way pump, the control port of described second Pilot operated check valve and the 5th Pilot operated check valve is connected first hydraulic fluid port of two-way pump, and the control port of described the 3rd Pilot operated check valve connects the oil outlet of pilot safety valve;
The oil outlet of described pilot safety valve connects the rodless cavity that becomes the oar oil cylinder through a quick oil feeding one-way valve;
Two active chambers of described change oar oil cylinder respectively are connected to an oil cylinder working-pressure sensor;
Described propeller pump control loop has at least one, a blade of the corresponding control in each propeller pump control loop wind-driven generator, and each propeller pump control loop is connected with each other;
An angular displacement sensor that is used to detect the propeller pitch angle of this blade all is housed on each blade of described wind-driven generator, and described angular displacement sensor connects and controls actuating motor operation in its corresponding propeller pump control loop through a demodulator, a servoamplifier.
2. the direct drive type volume control variable-pitch system that is used for wind-driven generator according to claim 1 is characterized in that: the filler opening of described pilot safety valve is connected to a high-pressure manometer.
3. the direct drive type volume control variable-pitch system that is used for wind-driven generator according to claim 1, it is characterized in that: described accumulation of energy loop is provided with oil storage pressure tap and high pressure pressure tap, described oil storage pressure tap is through the return opening of one-way valve connection quick closing valve solenoid valve, and described high pressure pressure tap connects the filler opening of pilot safety valve through an one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203533977U CN201635929U (en) | 2009-12-30 | 2009-12-30 | Direct-drive volume control type pitch system of wind-driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203533977U CN201635929U (en) | 2009-12-30 | 2009-12-30 | Direct-drive volume control type pitch system of wind-driven generator |
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| Publication Number | Publication Date |
|---|---|
| CN201635929U true CN201635929U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203533977U Expired - Fee Related CN201635929U (en) | 2009-12-30 | 2009-12-30 | Direct-drive volume control type pitch system of wind-driven generator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813066A (en) * | 2009-12-30 | 2010-08-25 | 上海汇益控制系统股份有限公司 | Direct drive type volume control variable-pitch system of wind-driven generator |
| CN109058042A (en) * | 2018-07-23 | 2018-12-21 | 中国东方电气集团有限公司 | A kind of integrated form wind power master control pitch-controlled system |
| CN109441724A (en) * | 2018-12-26 | 2019-03-08 | 北京金风科创风电设备有限公司 | Safety throttling device and method for hydraulic pitch control system and hydraulic pitch control system |
-
2009
- 2009-12-30 CN CN2009203533977U patent/CN201635929U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813066A (en) * | 2009-12-30 | 2010-08-25 | 上海汇益控制系统股份有限公司 | Direct drive type volume control variable-pitch system of wind-driven generator |
| CN101813066B (en) * | 2009-12-30 | 2013-01-02 | 上海汇益控制系统股份有限公司 | Direct drive type volume control variable-pitch system of wind-driven generator |
| CN109058042A (en) * | 2018-07-23 | 2018-12-21 | 中国东方电气集团有限公司 | A kind of integrated form wind power master control pitch-controlled system |
| CN109441724A (en) * | 2018-12-26 | 2019-03-08 | 北京金风科创风电设备有限公司 | Safety throttling device and method for hydraulic pitch control system and hydraulic pitch control system |
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