CN111927583A - Automatic-meshing electric barring gear and control method - Google Patents
Automatic-meshing electric barring gear and control method Download PDFInfo
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- CN111927583A CN111927583A CN202010811690.4A CN202010811690A CN111927583A CN 111927583 A CN111927583 A CN 111927583A CN 202010811690 A CN202010811690 A CN 202010811690A CN 111927583 A CN111927583 A CN 111927583A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 239000010687 lubricating oil Substances 0.000 claims description 17
- 239000003921 oil Substances 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 241001584775 Tunga penetrans Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/34—Turning or inching gear
- F01D25/36—Turning or inching gear using electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0498—Worm gearings
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Abstract
The invention discloses an automatic meshing electric barring gear and a control method thereof, the automatic meshing electric barring gear comprises a barring motor, a worm connected with the motor, a worm wheel matched with the worm for transmission, a moving gear coaxial with the worm wheel and a barring gear, wherein the barring motor is electrically connected with a controller, the worm wheel is arranged on a worm wheel rod, the worm wheel rod is connected with the moving gear in a screw transmission mode, the moving gear can be meshed with the barring gear, a first barring input device and a second barring input device for limiting and adjusting the rotation of the moving gear are arranged beside the moving gear, a proximity switch for detecting whether the moving gear is meshed with the barring gear is arranged at the meshing position of the moving gear and the barring gear, and the proximity switch is electrically connected with the controller. Thereby effectively improving personal and equipment safety and improving the automation of the turboset.
Description
Technical Field
The invention relates to the technical field of steam turbines, in particular to an automatic meshing electric barring gear and a control method.
Background
The turning gear is an important part of the steam turbine, the electric turning gear is the most common turning gear, the electric motor drives the steam turbine to rotate at a low speed through a series of gear devices, and a rotor is uniformly heated through the turning gear before the steam turbine is started, so that the warming process of the steam turbine is accelerated; the high-temperature rotor is uniformly cooled through the turning gear after the turbine is shut down, and the rotor is prevented from being bent due to uneven cooling and heating.
The barring input device is a main component of the electric barring device, and in most barring input devices, the method of manually engaging the movable gear with the barring gear is adopted, so that the method is high in labor intensity, time-consuming and labor-consuming, has great potential safety hazards to people and equipment, and a part of automatic barring devices are electrically controlled, but when the movable gear is engaged with the barring gear, the gear tooth positions of the movable gear need to be manually intervened at certain specific positions, the process of automatically controlling the barring engagement by the devices can not be realized, the development theme of the device towards the intelligent and automatic directions in the society at present is not met, and the requirements of modernization and automation can not be met.
Disclosure of Invention
In view of the above, the present invention provides an automatic engaging electric barring apparatus for a barring apparatus and a control method thereof, which are used to solve the above-mentioned deficiencies of the prior art, and not only can reduce labor intensity and save time and labor, but also can avoid errors and dangers caused by field operations, thereby effectively improving personal and equipment safety and improving the automation of a steam turbine set.
In order to achieve the purpose, the designed automatic-meshing electric barring gear comprises a barring motor, a worm connected with the motor, a worm wheel in matched transmission with the worm, a moving gear coaxial with the worm wheel and a barring gear, and is characterized in that the barring motor is electrically connected with a controller, the worm wheel is arranged on a worm wheel rod, the worm wheel rod is connected with the moving gear in a lead screw transmission mode, the moving gear can be meshed with the barring gear, a first barring input device and a second barring input device for limiting and adjusting rotation of the moving gear are arranged beside the moving gear, a proximity switch for detecting whether meshing is carried out or not is arranged at a meshing position of the moving gear and the barring gear, and the proximity switch is electrically connected with the controller.
In order to stably mesh a mobile gear and a barring gear, the automatic meshing electric barring device further comprises a barring housing, the first barring input device and the second barring input device are both mounted on the barring housing, each of the first barring input device and the second barring input device comprises a barring input housing and a barring input chamber arranged in the barring input housing, a contact for limiting rotation of the mobile gear and a slide valve capable of moving axially along the barring input chamber are arranged in the barring input chamber, the barring input chamber is further connected with a power device for providing power for the slide valve, the power device comprises a power pipe, a limiting electromagnetic valve and an adjusting electromagnetic valve are arranged on the power pipe, the limiting electromagnetic valve controls the first barring input device and is electrically connected with a controller, and the limiting electromagnetic valve controls the second barring input device, and a controller electrically connected to the first and second barring input devices, wherein a barring input angle formed by the first and second barring input devices with a center of a circle of the moving gear as a vertex is N, a total number of teeth of the moving gear is Z, an angle of a single tooth of the moving gear is R, R =360 ° ÷ Z, an angle of a half tooth of the moving gear is S, S = R ÷ 2, an angle between the second barring input device and a gear tooth axis closest to the second barring input device in the barring input angle is a deviation angle W, W = N- [ N ÷ R ] × R, where "[ N ÷ R ]" is a rounding calculation, where [ N ÷ R ] indicates the number of teeth of the moving gear included between the first and second barring input devices, and indicates that an angle between the deviation angle W and a half tooth of the moving gear is S, and the condition should be satisfied: w ≠ S.
The pressure medium is pressure oil or compressed air.
In order to realize the manual control of the first barring input device, a handle is further arranged on the first barring input device, and a push rod for pushing the slide valve is arranged on the handle.
In order to realize that parts of the turning gear need to be lubricated in the turning gear meshing process, a lubricating oil pipe used for a turning gear, a worm wheel, a worm and a worm wheel lever is arranged, and in order to control the lubricating oil pipe, an oil pipe electromagnetic valve is arranged on the lubricating oil pipe and is electrically connected with a controller.
In order to replace a turning gear motor under manual control and provide required power for a worm wheel, a hand wheel connected with a worm is arranged.
In order to improve the meshing rate of the turning gear and the movable gear, the input end faces of the movable gear and the turning gear are provided with chamfers, and the chamfers are large in size.
In order to realize the control of the automatic engagement barring gear, the control method of the automatic engagement electric barring gear comprises the following steps of:
1) detecting whether the rotating speed of the steam turbine is zero, and performing subsequent inspection when the rotating speed of the steam turbine is zero;
2) detecting whether the lubricating oil pressure is normal or not, and controlling the oil pipe electromagnetic valve to be opened when the lubricating oil pressure is normal, so that the lubricating oil enters the barring gear;
3) detecting whether the pressure source is normal, when the pressure source is normal, sending a signal to switch a limiting electromagnetic valve by the controller, driving a first barring input device by the pressure source to prop against a movable gear to limit the rotation of the movable gear, controlling a barring motor to operate at a first output frequency, and enabling the movable gear to move along a worm gear so as to be meshed with the barring gear until a proximity switch sends a meshed signal to the controller, and completing barring meshing;
4) the controller generates a signal to enable the first barring input device to not limit the rotation of the barring gear any more, and then the controller controls the barring motor to operate at a second output frequency to start a normal barring process;
5) if the proximity switch in the step 3) does not send a meshed signal to the controller after the preset time, the first meshing is not successful, at this time, the barring motor is turned off, the limit electromagnetic valve is switched to enable the pressure medium in the pressure source to flow out of the first barring input device, the first barring input device does not abut against the moving gear any more, the adjustment electromagnetic valve is switched again to enable the pressure medium in the pressure source to flow into the second barring input device, if W is larger than S, the second barring input device abuts against the moving gear and enables the moving gear to rotate for R-W degrees, if W is smaller than S, the second barring input device abuts against the moving gear and enables the moving gear to rotate for W degrees, when the second barring input device abuts against the moving gear and enables the moving gear to rotate again and fix again, the barring motor is started again at the first output frequency to enable the moving gear to perform barring secondary meshing in the state, until the proximity switch sends an engaged signal to the controller, the barring engagement is completed;
6) the controller generates a signal to enable the second barring input device not to limit the rotation of the moving gear any more, and then the controller controls the barring motor to operate at a second output frequency to start a normal barring process;
7) and when the rotating speed of the steam turbine exceeds a set value, stopping the turning motor, and withdrawing the moving gear from the meshing state.
In order to stably perform the engagement process, the zero rotation speed is a rotation speed lower than 1rpm, the first output frequency is 2Hz to 5Hz, and the second output frequency is 12Hz to 60 Hz.
The automatic meshing electric barring gear has the beneficial effects that: the automatic turning device is simple to operate, high in automation, capable of reducing labor intensity of workers, reducing potential safety hazards between personnel and equipment, capable of meeting the turning requirements conveniently and quickly and capable of improving the working efficiency of turning.
Drawings
Fig. 1 is a structural front view of an automatic engagement electric barring apparatus.
Fig. 2 is a structural sectional view of the automatic engagement electric barring apparatus.
Fig. 3 is a control structure schematic diagram.
Fig. 4 is a schematic structural diagram of the first cart input device.
Fig. 5 is a schematic view of the installation position of the barring input device.
Fig. 6 is an enlarged view at a of fig. 5.
In the figure: the turning device comprises a turning motor 1, a turning gear 2, a moving gear 3, a first turning input device 4, a lubricating oil pipe 5, a proximity switch 6, a controller 7, a pressure source 8, a second turning input device 9, a turning shell 11, a worm 21, a worm wheel 22, a worm wheel rod 23, a hand wheel 24, a turning input shell 41, a turning input chamber 42, a slide valve 43, a contact 44, a power pipe 45, a limiting electromagnetic valve 46, an adjusting electromagnetic valve 47, a handle 48, a push rod 49 and an oil pipe electromagnetic valve 51.
Detailed Description
In order to make the technical field of the invention better understand, the invention is further explained with the accompanying drawings and the embodiments.
Example 1:
the automatic engagement electric barring apparatus described in the embodiment of the present invention, as shown in fig. 1 to 3, includes a barring motor 1, a worm 21 connected with a motor, a worm wheel 22 matched with the worm 21 for transmission, a moving gear 3 coaxial with the worm wheel 22 and a turning gear 2, wherein the turning gear 2 is arranged on a shaft of a steam turbine, it is characterized in that the barring motor 1 is electrically connected with the controller 7, the worm wheel 22 is arranged on the worm wheel rod 23, the worm gear 23 is connected with the moving gear 3 in a screw transmission mode, the moving gear 3 can be meshed with the turning gear 2, a first turning input device 4 for limiting and adjusting the rotation of the moving gear 3 and a second turning input device 9 for adjusting the gear tooth angle of the moving gear 3 are arranged beside the moving gear 3, and a proximity switch 6 for detecting whether the moving gear 3 is meshed with the turning gear 2 is arranged at the meshing position, and the proximity switch 6 is electrically connected with a controller 7.
As shown in fig. 1 and 4, the automatic engagement electric barring apparatus further includes a barring housing 11, the first barring input device 4 and the second barring input device 9 are both mounted on the barring housing 11, each of the first barring input device 4 and the second barring input device 9 includes a barring input housing 41, and a barring input chamber 42 provided inside the barring input housing 41, a contact 44 for restricting rotation of the moving gear 3 and a slide valve 43 capable of moving in an axial direction of the barring input chamber 42 are provided in the barring input chamber 42, the barring input chamber 42 is further connected with a power device for supplying power to the slide valve 43, the power device includes a power pipe 45, a limit solenoid valve 46 and an adjustment solenoid valve 47 are provided on the power pipe 45, the limit solenoid valve 46 controls the first barring input device 4 and is electrically connected to the controller 7, the limit solenoid valve 46 controls the second barring input device 9 and is electrically connected to the controller 7, as shown in fig. 5 to 6, the barring input angle formed by the first barring input device 4 and the second barring input device 9 with the center of the moving gear 3 as a vertex is N, the total number of gear teeth of the moving gear 3 is Z, the angle of a single tooth of the moving gear 3 is R, R =360 °/Z, the angle of a half tooth of the moving gear 3 is S, S = R ÷ 2, the angle of the gear tooth axis closest to the second barring input device 9 in the barring input angle is a deviation angle W, W = N- [ N ÷ R ] × R, "[ N ÷ R ]" is a rounding calculation, and [ N ÷ R ] indicates that the number of teeth of the moving gear is included between the first barring input device 4 and the second barring input device 9, representing that the angle S representing said deviation angle W from the moving gear half-tooth should satisfy the condition: w ≠ S.
The automatic lubricating device further comprises a lubricating oil pipe 5 with a lubricating effect on the turning gear 2, the worm 21, the worm wheel 22 and the worm wheel lever 23, wherein an oil pipe electromagnetic valve 51 is arranged on the lubricating oil pipe 5, and the oil pipe electromagnetic valve 51 is electrically connected with the controller 7.
The automatic barring control method provided by the embodiment comprises the following steps of:
1) detecting whether the rotating speed of the steam turbine is zero, and performing subsequent inspection when the rotating speed of the steam turbine is zero;
2) detecting whether the lubricating oil pressure is normal or not, and controlling the oil pipe electromagnetic valve 51 to be opened when the lubricating oil pressure is normal, so that the lubricating oil enters the barring gear;
3) detecting whether the pressure source 8 is normal, when the pressure source 8 is normal, the controller 7 sends a signal to switch the limit electromagnetic valve 46, the pressure source 8 drives the first barring input device 4 to prop against the moving gear 3 to limit the rotation of the moving gear 3, and controls the barring motor 1 to operate at a first output frequency, so that the moving gear 3 moves along the worm gear 23 to be meshed with the barring gear 2, until the proximity switch 6 sends a meshed signal to the controller 7, and the barring meshing is completed;
4) the controller 7 generates a signal to enable the first barring input device 4 to not limit the rotation of the barring gear 3 any more, and then the controller controls the barring motor 1 to operate at a second output frequency to start a normal barring process;
5) if the proximity switch 6 in the step 3) does not send a meshed signal to the controller 7 after a preset time, which indicates that the first meshing is not successful, at this time, the barring motor 1 is turned off, the limit solenoid valve 46 is switched to make the pressure medium in the pressure source 8 flow out of the first barring input device 4, the first barring input device 4 no longer abuts against the moving gear 3, and the regulating solenoid valve 47 is switched again to make the pressure medium in the pressure source 8 flow into the second barring input device 9;
in the present embodiment, when the total number of teeth Z =41 of the moving gear 3 is shown, the angle R =8.8 ° of a single tooth and the angle S =4.4 ° of a half tooth are obtained, and the moving gear 3 is rotated in reverse to mesh with the turning gear 2, so that when the position of the second turning input device 9 is controlled to N =177 °, W =1 ° calculated by this can be satisfied, and W < S satisfies the condition that the second turning input device 9 rotates the moving gear 3;
therefore, after the pressure medium flows into the second barring input device 9, the contact 44 of the second barring input device 9 presses against the tooth surface of the moving gear 3, so that the moving gear 3 rotates by 1 ° according to the setting and is fixed again by the second barring input device 9, at this time, the first output frequency starts the barring motor 1, so that the moving gear 3 performs barring secondary engagement in this state until the proximity switch 6 sends an engaged signal to the controller 7, and barring engagement is completed;
6) the controller 7 generates a signal to enable the second barring input device 9 to not limit the rotation of the moving gear 3 any more, and then the controller controls the barring motor 1 to operate at a second output frequency to start a normal barring process;
7) when the rotating speed of the steam turbine exceeds a set value, the turning motor 1 is stopped, and the movable gear 3 is out of a meshing state.
The zero rotating speed is a rotating speed lower than 1rpm, the first output frequency is 2HZ-5HZ, and the second output frequency is 12HZ-60 HZ.
In the first barring input device 4, when the switching limit solenoid valve 46 makes the pressure medium enter the first barring input device 4, the pressure medium pushes the slide valve 43, the slide valve 43 moves the pushing contact 44 toward the moving gear 3 until the contact 44 limits the rotation of the moving gear 3, when the switching limit solenoid valve 46 makes the pressure medium flow out of the first barring input device 4, the slide valve 43 moves along the axial direction of the barring input chamber 42, the slide valve 43 drives the contact 44 to move away from the moving gear 3 until the contact 44 contacts the limit of the rotation of the moving gear 3, and the rotation control of the moving gear 3 by the first barring input device 4 is completed, and particularly, the second barring input device 9 is structurally identical to the first barring input device 4.
In particular, the pressure medium used in the present embodiment is pressure oil.
The automatic meshing electric barring device provided by the embodiment can reduce labor intensity, save time and labor, and avoid errors and dangers caused by field operation, thereby effectively improving personal and equipment safety and improving the automation of the steam turbine unit.
Example 2:
the automatic engaging electric barring gear described in this embodiment is different from that described in embodiment 1 in that the pressure medium may be compressed air.
In the automatic engaging electric barring apparatus described in this embodiment, compressed air is used as a transmission medium in the first barring input device 4, the controller 7 controls the switching of the electromagnetic valve 46, so that the compressed air enters the first barring input device 4 to control the movement of the slide valve 43, or the compressed air flows out of the first barring input device 4, and the slide valve 43 drives the movement of the contact 44, thereby controlling the contact 44 and achieving the control of the rotation of the moving gear 3.
In this embodiment, the first barring input device 4 is controlled by using a medium such as pressure gas, and the diversity of the pressure medium transmitted by the first barring input device 4 is reflected.
Example 3:
the automatic meshing electric barring gear described in this embodiment is different from the embodiment 1 in that, as shown in fig. 4, it further includes a hand wheel 24 connected to the worm 21.
The jigger throwing device is also provided with a handle 48, and the handle 48 is provided with a push rod 49 for pushing the slide valve 43.
In the embodiment, when the device needs to be manually used, only the hand wheel 24 is arranged on the barring device, the hand wheel 24 is connected with the worm 21, when a person rotates the hand wheel 24, the hand wheel 24 drives the worm 21, the worm 21 and the worm wheel 22 are in matched transmission, and the handle 48 on the first barring input device 4 is manually used to limit the rotation of the moving gear 3 by the first barring input device 4, so that the moving gear 3 and the barring gear 2 are meshed for the first time, whether the meshing is successful or not is judged manually, if the judgment is unsuccessful, the other handle 48 is loosened, the other barring input device 6 pushes the handle 48 of the other barring input device, the moving gear 3 is rotated to a position where the moving gear 3 can be meshed with the barring gear 2, the first barring input device 4 limits the moving gear 3 to rotate, at the moment, the hand wheel 24 drives the worm 21, and the worm 21 drives the worm wheel 22 to transmit, the worm wheel 22 drives the worm wheel lever 23, and the worm wheel lever 23 drives the moving gear 23 to move towards the turning gear 2, so that the moving gear 3 and the turning gear 2 are meshed secondarily.
According to the turning gear, manual control is achieved on the premise that automatic control is reserved, and diversity of control methods of the turning gear is increased.
Example 4:
in the automatic engaging electric barring apparatus described in this embodiment, in addition to the features described in embodiment 3, the input end surfaces of the moving gear 3 and the barring gear 2 are provided with a chamfer, and the chamfer is large in size.
In the embodiment, the input end faces of the movable gear 3 and the turning gear 2 are designed to be large chamfers, and the meshing rate of the two gears is greatly improved.
Claims (9)
1. An automatic meshing electric barring gear comprises a barring motor (1) and a worm (21) connected with the motor, a worm wheel (22) which is matched with the worm (21) for transmission, a moving gear (3) which is coaxial with the worm wheel (22) and a turning gear (2), it is characterized in that the barring motor (1) is electrically connected with the controller (7), the worm wheel (22) is arranged on the worm wheel rod (23), the worm gear (23) is connected with the movable gear (3) in a screw transmission way, the movable gear (3) can be meshed with the turning gear (2), a first turning input device (4) and a second turning input device (9) for limiting and adjusting the rotation of the movable gear (3) are arranged beside the movable gear (3), and a proximity switch (6) for detecting whether the gear is meshed or not is arranged at the meshing position of the movable gear (3) and the turning gear (2), and the proximity switch (6) is electrically connected with the controller (7).
2. The automatic meshing electric barring device according to claim 1, further comprising a barring housing (11), wherein the first barring input device (4) and the second barring input device (9) are both mounted on the barring housing (11), the first barring input device (4) and the second barring input device (9) each comprise a barring input housing (41) and a barring input chamber (42) provided in the barring input housing (41), a contact (44) for restricting rotation of the movable gear (3) and a sliding valve (43) capable of moving axially along the barring input chamber (42) are provided in the barring input chamber (42), the barring input chamber (42) is further connected with a power device for providing power to the sliding valve (43), and the power device comprises a pressure source (8) capable of outputting a pressure medium, and a sliding valve (43) capable of providing power to the sliding valve (43), And a power pipe (45) connected with the pressure source (8), wherein a limit electromagnetic valve (46) and an adjusting electromagnetic valve (47) are arranged on the power pipe (45), the limit electromagnetic valve (46) is connected with the first barring input device (4) through the power pipe (45) and is electrically connected with the controller (7), the limit electromagnetic valve (46) is connected with the second barring input device (9) through the power pipe (45) and is electrically connected with the controller (7), a barring input included angle formed by the first barring input device (4) and the second barring input device (9) by taking the circle center of the mobile gear (3) as a vertex is N, the total number of gear teeth of the mobile gear (3) is Z, the angle of a single tooth of the mobile gear (3) is R, R =360 DEG/Z, the angle of a half tooth of the mobile gear (3) is S, S = R/2, and the included angle of the second barring input device (9) and the second barring input inner part is closest to the second barring input device (9) The angle of the gear tooth axis is a deviation angle W, W = N- [ N ÷ R ] × R, the "[ N ÷ R ]" is a rounding calculation, the [ N ÷ R ] represents that the number of teeth of the moving gear (3) is included between the first barring input device (4) and the second barring input device (9), and represents that the angle between the deviation angle W and a half tooth of the moving gear (3) is S, and the condition is satisfied: w ≠ S.
3. The automatic meshing electric barring gear according to claim 2, wherein the pressure medium is pressure oil or compressed air.
4. The automatic engaging electric barring gear according to claim 2, wherein a handle (48) is further provided on the barring input device (4), and a push rod (49) for pushing the slide valve (43) is provided on the handle.
5. The automatic meshing electric barring gear according to claim 1, comprising a lubricating oil pipe (5) for lubricating on the barring gear (2), the worm (21), the worm wheel (22) and the worm wheel lever (23), wherein an oil pipe electromagnetic valve (51) is arranged on the lubricating oil pipe (5), and the oil pipe electromagnetic valve (51) is electrically connected with the controller (7).
6. The automatic meshing electric barring gear according to claim 1, further comprising a hand wheel (24) connected to the worm (21).
7. The automatic meshing electric barring gear according to claim 1, characterized in that input end faces of the moving gear (3) and the barring gear (2) are provided with a chamfer.
8. An automatic engagement barring control method applied to the automatic engagement barring apparatus according to any one of claims 1 to 7, characterized by comprising the steps of:
detecting whether the rotating speed of the steam turbine is zero, and performing subsequent inspection when the rotating speed of the steam turbine is zero;
detecting whether the lubricating oil pressure is normal or not, and controlling an oil pipe electromagnetic valve (51) to be opened when the lubricating oil pressure is normal, so that the lubricating oil enters the barring gear;
detecting whether a pressure source (8) is normal, when the pressure source (8) is normal, sending a signal to switch a limit electromagnetic valve (46) by a controller (7), driving a first barring input device (4) to prop against a movable gear (3) to limit the rotation of the movable gear (3) by the pressure source (8), controlling a barring motor (1) to operate at a first output frequency, enabling the movable gear (3) to move along a worm rod (23) to be meshed with a barring gear (2) until a proximity switch (6) sends a meshed signal to the controller (7), and completing barring meshing;
the controller (7) generates a signal to enable the first barring input device (4) to not limit the rotation of the barring gear (3), and then the controller controls the barring motor (1) to operate at a second output frequency to start a normal barring process;
if the proximity switch (6) in the step 3) does not send a meshed signal to the controller (7) after a preset time, the first meshing is not successful, at the moment, the barring motor (1) is turned off, the limiting electromagnetic valve (46) is switched to enable the pressure medium in the pressure source (8) to flow out of the first barring input device (4), the first barring input device (4) does not abut against the movable gear (3), the adjusting electromagnetic valve (47) is switched to enable the pressure medium in the pressure source (8) to flow into the second barring input device (9), if W is larger than S, the second barring input device (9) abuts against the movable gear (3) and enables the movable gear (3) to rotate for R-W degrees, and if W is smaller than S, the second barring input device (9) abuts against the movable gear (3) and enables the movable gear (3) to rotate
When the second barring input device (9) presses the movable gear (3) to rotate and fix the movable gear (3) again, the barring motor (1) is started again at the first output frequency, so that the movable gear (3) performs barring secondary engagement in the state until the proximity switch (6) sends an engaged signal to the controller (7), and barring engagement is completed;
the controller (7) generates a signal to ensure that the second barring input device (9) does not limit the rotation of the movable gear (3), and the controller (7) controls the barring motor (1) to operate at a second output frequency to start a normal barring process;
when the rotating speed of the steam turbine exceeds a set value, the turning motor (1) is stopped, and the movable gear (3) is out of a meshing state.
9. The automatic meshing barring control method according to claim 8, wherein the zero rotation speed is a rotation speed lower than 1rpm, the first output frequency is 2HZ to 5HZ, and the second output frequency is 12HZ to 60 HZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010811690.4A CN111927583B (en) | 2020-08-13 | 2020-08-13 | Automatic-meshing electric barring gear and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010811690.4A CN111927583B (en) | 2020-08-13 | 2020-08-13 | Automatic-meshing electric barring gear and control method |
Publications (2)
| Publication Number | Publication Date |
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| CN111927583A true CN111927583A (en) | 2020-11-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217123A (en) * | 2021-06-24 | 2021-08-06 | 广东核电合营有限公司 | Control method and system for turning gear, computer equipment and storage medium |
| CN114430214A (en) * | 2021-12-22 | 2022-05-03 | 威乐(中国)水泵***有限公司 | Barring gear and have water pump of barring gear |
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| CN202280488U (en) * | 2011-09-30 | 2012-06-20 | 浙江杰特优动力机械有限公司 | Motor-driven turning mechanism |
| CN202718719U (en) * | 2012-07-01 | 2013-02-06 | 浙江杰特优动力机械有限公司 | Electric barring device of steam turbine |
| CN109386322A (en) * | 2018-10-15 | 2019-02-26 | 青岛捷能汽轮机集团股份有限公司 | A kind of automatic barring gear and control method |
| CN110454245A (en) * | 2019-08-30 | 2019-11-15 | 福建福清核电有限公司 | A kind of main turning gear having additional rapid escape valve |
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2020
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202280488U (en) * | 2011-09-30 | 2012-06-20 | 浙江杰特优动力机械有限公司 | Motor-driven turning mechanism |
| CN202718719U (en) * | 2012-07-01 | 2013-02-06 | 浙江杰特优动力机械有限公司 | Electric barring device of steam turbine |
| CN109386322A (en) * | 2018-10-15 | 2019-02-26 | 青岛捷能汽轮机集团股份有限公司 | A kind of automatic barring gear and control method |
| CN110454245A (en) * | 2019-08-30 | 2019-11-15 | 福建福清核电有限公司 | A kind of main turning gear having additional rapid escape valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217123A (en) * | 2021-06-24 | 2021-08-06 | 广东核电合营有限公司 | Control method and system for turning gear, computer equipment and storage medium |
| CN114430214A (en) * | 2021-12-22 | 2022-05-03 | 威乐(中国)水泵***有限公司 | Barring gear and have water pump of barring gear |
| CN114430214B (en) * | 2021-12-22 | 2024-03-15 | 威乐(中国)水泵***有限公司 | Jigger device and water pump with jigger device |
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| CN111927583B (en) | 2022-12-09 |
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Address after: 310018 No. 18, No. 22, Hangzhou economic and Technological Development Zone, Zhejiang Patentee after: Hangzhou Zhongneng Turbine Machinery Equipment Co.,Ltd. Country or region after: China Address before: 310018 No. 18, No. 22, Hangzhou economic and Technological Development Zone, Zhejiang Patentee before: HANGZHOU CHINEN STEAM TURBINE POWER CO.,LTD. Country or region before: China |