CN111425648A - Disc spring energy storage reset servo direct-drive type angular travel rapid turn-off executing device - Google Patents
Disc spring energy storage reset servo direct-drive type angular travel rapid turn-off executing device Download PDFInfo
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- CN111425648A CN111425648A CN202010139435.XA CN202010139435A CN111425648A CN 111425648 A CN111425648 A CN 111425648A CN 202010139435 A CN202010139435 A CN 202010139435A CN 111425648 A CN111425648 A CN 111425648A
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- energy storage
- shaft
- disc spring
- worm wheel
- worm
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
- F16K31/055—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation for rotating valves
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/502—Mechanical actuating means with screw-spindle or internally threaded actuating means actuating pivotable valve members
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
- H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
- H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a disc spring energy storage reset servo direct-drive type angular travel rapid turn-off executing device which comprises a power mechanism, a power switching mechanism, a transmission system and an energy storage reset mechanism, wherein the power mechanism is arranged on the disc spring energy storage reset servo direct-drive type angular travel rapid turn-off executing device; the power mechanism drives the transmission system to realize stroke output; the power mechanism comprises an electric drive system and a manual operation system; the power switching mechanism is used for realizing switching between an electric drive system and a manual operation system; the energy storage reset mechanism is used for switching off the electric actuating mechanism when the electric driving system loses power; the transmission mechanism comprises a worm wheel shaft, a worm shaft and a second worm wheel, wherein the worm wheel shaft is provided with a first worm wheel, the worm shaft is fixedly connected with the worm wheel shaft, and the second worm wheel is meshed with the worm shaft. The invention applies the ideas of alternating current servo direct drive and disc spring energy storage to the design process of a common electric actuator, thereby enabling the whole electric actuator to rapidly cope with sudden faults, improving the working efficiency of the electric actuator and reducing the energy consumption of the electric actuator.
Description
Technical Field
The invention relates to the technical field of electric actuating mechanisms, in particular to a disc spring energy storage reset servo direct-drive type angular travel rapid turn-off actuating device.
Background
Along with the gradual popularization of oil and gas pipelines in industry and civil use, the construction and development of oil and gas pipeline networks are rapid. The manufacturing of oil and gas pipeline equipment is an important basic industry and a strategic industry, promotes the localization of the oil and gas pipeline equipment, and has very important significance for ensuring the sufficiency of national energy storage, strategic safety, optimizing an energy structure, changing energy production and consumption modes, improving the utilization rate of oil and gas, promoting the sustainable and healthy development of economy and the like. Wherein, the electric actuating mechanism matched with the pipeline valve plays a very important role in the construction of the natural gas pipeline. The electric actuating mechanism is used as a terminal actuating mechanism of a large-caliber valve control system, and the requirements of people on the working performance and the reliability of the electric actuating mechanism are increasing day by day. In some dangerous occasions, the electric actuating mechanism can well protect personal and property safety.
The traditional angle stroke electric actuating mechanism mainly comprises a common alternating current motor, a speed reducer, a worm gear and a worm, and the like, and the main working principle of the traditional angle stroke electric actuating mechanism is that the common alternating current motor is used as a main power source, the speed reducer is used for reducing the speed, the power is transmitted to the worm gear through the worm, and the worm gear controls an angle stroke valve, but the traditional angle stroke electric actuating mechanism has the following defects that the unique power source of ① is the common alternating current motor, when the power failure or the emergency situation occurs, the traditional angle stroke electric actuating mechanism cannot close the angle stroke valve in time, so that the angle stroke valve is in an open state for a long time, certain dangerous hidden danger exists, the rotating speed cannot be adjusted in time due to the fact that the common direct current servo motor is used in ②, manual operation cannot be performed due to the fact that no manual original piece exists in ③, the ④ is slow in operation and easy.
Disclosure of Invention
In order to solve the technical problems, the invention provides a disc spring energy storage reset servo direct-drive type angular travel rapid turn-off executing device, which applies the ideas of alternating current servo direct drive and disc spring energy storage to the design process of a common electric actuator, so that the whole electric actuator has the advantages of rapidly coping with sudden faults, improving the working efficiency of the electric actuator and reducing the energy consumption of the electric actuator.
The technical scheme for solving the problems is as follows: a disc spring energy storage reset servo direct-drive type angular travel rapid turn-off executing device is characterized in that:
the energy storage and resetting device comprises a power mechanism, a power switching mechanism, a transmission system and an energy storage and resetting mechanism;
the power mechanism drives the transmission system to realize stroke output;
the power mechanism comprises an electric drive system and a manual operation system;
the power switching mechanism is used for realizing switching between an electric drive system and a manual operation system;
the energy storage reset mechanism is used for switching off the electric actuating mechanism when the electric driving system loses power;
the transmission mechanism comprises a worm wheel shaft, a worm shaft and a second worm wheel, wherein the worm wheel shaft is provided with a first worm wheel, the worm shaft is fixedly connected with the worm wheel shaft, and the second worm wheel is meshed with the worm shaft.
Furthermore, the electric drive system comprises an alternating current servo motor, a power output shaft of the alternating current servo motor is an alternating current servo screw output shaft, and the power output shaft is a screw part on the alternating current servo screw output shaft and meshed with the first worm wheel.
Further, the manual operating system comprises a hand wheel and a speed reducer;
the speed reducer comprises a planetary gear set, the planetary gear set comprises a planetary gear set sun gear, planetary gear set planetary pinions and a planetary gear carrier, a hand wheel is connected with the planetary gear set sun gear, the planetary gear set sun gear is meshed with the planetary gears of the planetary gear set, and the planetary gear carrier is matched with the planetary pinions of the planetary gear set.
Further, the power switching mechanism comprises a clutch engaging sleeve with an internal spline groove, a manual shifting fork and an external spline shaft;
the outer spline shaft is fixedly connected with one end of the worm wheel shaft, the outer side of the outer spline shaft is matched and assembled with a special-shaped nut with an inner spline groove and an outer spline groove, and the clutch engaging sleeve with the inner spline groove is arranged on the outer side of the special-shaped nut with the inner spline groove and the outer spline groove and can slide along the axial direction;
the end part of the planet gear carrier is provided with an external spline groove, and the inner side of the clutch joint sleeve with the internal spline groove can be matched with the end part of the planet gear carrier provided with the external spline groove;
the manual shifting fork is connected with a clutch engaging sleeve with an internal spline groove.
Further, the electromagnetic brake is further included and used for braking the alternating current servo motor.
Further, the device also comprises a first outer shell, a second outer shell and a third outer shell; the first outer shell and the third outer shell are respectively fixed at two ends of the second outer shell; the alternating current servo motor is arranged outside the first outer shell; the energy storage reset mechanism is arranged in the third outer shell.
Further, the energy storage reset mechanism comprises a ball screw and a disc spring;
the ball screw is fixedly connected to one end of the worm shaft, a screw nut is arranged on the ball screw, the disc spring is sleeved on the ball screw and located between the screw nut and the second end cover, and the second end cover is fixed on the third outer shell. Compared with the prior art, the invention has the beneficial effects that:
(1) the disc spring energy storage mechanism is used, and under the condition that the mechanism normally works, an angular travel valve controlled by the mechanism is in an open state, at the moment, if an emergency situation or a power system fault caused by other reasons occurs, an electromagnetic brake valve in the mechanism is opened, meanwhile, an alternating current servo motor generates motor brake, the power input of the system is 0, in the normal working process of the mechanism, the elastic potential energy stored by the disc spring energy storage system is released, a lead screw nut is pushed to move in the opposite direction, and a worm wheel is driven to close the angular travel valve, so that equipment damage and possible casualty risks caused by sudden situations are avoided;
(2) the invention designs that two control forms are adopted simultaneously: manual gear control and automatic gear control. The control of the two gears is realized through the action of the clutch, when the clutch is shifted downwards, the ball screw is connected with the motor shaft, the control is performed through the motor, when the motor is braked, the clutch is shifted upwards to connect the hand wheel and the planetary gear set with the ball screw, so that the manual control is realized, and the planetary gear set is adopted to facilitate the rotation of the hand wheel;
(3) the ball screw is designed as the intermediate mechanism, so that friction can be effectively reduced, transmission precision is increased, and the transmission process of the whole mechanism is stable and reliable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic external view of the present invention;
fig. 3 is a schematic view of the planetary gearset structure of the present invention.
The reference numbers in the figures illustrate: 1. an alternating current servo motor, 2, an alternating current servo screw output shaft, 3, an electromagnetic brake, 4, a first outer shell, 5, a first bolt, 6, a second outer shell, 7, a second bolt, 8, a first end cover, 9, a third outer shell, 10, a third bolt, 11, a second end cover, 12, a first worm wheel, 13, a worm wheel shaft, 14, an external spline shaft, 15, a special-shaped nut with an internal spline groove and an external spline groove, 16, a clutch engaging sleeve with an internal spline groove, 17, a planetary gear carrier with an external spline groove at the end, 18, a manual shift fork, 19, a planetary gear set planetary pinion, 20, an external gear ring, 21, a planetary gear set sun gear, 22, a hand wheel, 23, a worm shaft, 24, a second worm wheel, 25, a ball screw, 26, a screw nut, 27 and a disc spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
As shown in fig. 1, fig. 2 and fig. 3, the disc spring energy storage reset servo direct-drive angular travel fast turn-off actuator includes an ac servo motor 1, an ac servo screw output shaft 2 is a power output shaft of the ac servo motor 1, and the ac servo screw output shaft 2 passes through an electromagnetic brake 3 fixed on a first outer housing 4 and then forms a meshing relationship with a first worm wheel 12. The left side of the first shell body 4 is fixedly connected with a second shell body 6 through a first bolt 5, the end part of the second shell body 6 is fixedly connected with a first end cover 8 through a second bolt 7, the right side of the first shell body 4 is fixedly connected with a third shell body 9, and the right end part of the third shell body 9 is fixedly connected with a second end cover 11 through a third bolt 10. The first worm wheel 12 is fixedly connected to a worm wheel shaft 13, the left end of the worm wheel shaft 13 is fixedly connected with an external spline shaft 14, the outer side of the external spline shaft 14 is provided with a special-shaped nut 15 with an internal spline groove and an external spline groove in a matching mode, the outer side of the special-shaped nut 15 with the internal spline groove is provided with a clutch engaging sleeve 16 with the internal spline groove in a matching mode, the inner side of the clutch engaging sleeve 16 with the internal spline groove is simultaneously provided with a planet gear carrier 17 with an external spline groove at the end part in a matching mode, the outer side of the clutch engaging sleeve 16 with the internal spline groove is provided with a manual shifting fork 18 capable of freely sliding in a groove on the outer side of the clutch engaging sleeve 16 with the internal spline groove in a matching mode, the planet gear carrier 17 is fixedly connected with a planet pinion 19 of a planet gear set, the outer side of the planet pinion 19 of. The worm shaft 23 is fixedly connected to the right end of the worm wheel shaft 13, the second worm wheel 24 is meshed with the outer side of the worm shaft 23, the ball screw 25 is fixedly connected to the right side of the worm shaft 23, the screw nut 26 and the disc spring 27 are installed on the ball screw 25 in a matched mode, the screw nut 26 is arranged on the left side of the disc spring 27, and the second end cover 11 is arranged on the right side of the disc spring 27.
The working principle of the invention is as follows:
(1) the invention adopts an AC servo motor 1 to directly drive an AC servo screw output shaft 2 to rotate, and the rotation of the AC servo screw output shaft 2 drives a first worm wheel 12 which is in a meshing relationship with the AC servo screw output shaft to rotate. The rotation of the first worm wheel 12 drives the worm wheel shaft 13 to rotate, and the rotation of the worm wheel shaft 13 drives the second worm wheel 24 to rotate, so that the angular stroke motion of the electric actuating mechanism with the angular stroke fast cut-off is realized.
(2) The specific principle of the invention for realizing gear switching through the clutch is as follows:
when the electromagnetic brake 3 is tightly absorbed and the position of the manual shifting fork 18 is lower, the clutch engaging sleeve 16 with the internal spline groove and the special-shaped nut 15 with the internal spline groove and the external spline groove are mutually connected, at the moment, the rotation of the hand wheel 22 does not influence the power output of the worm wheel shaft 13, and at the moment, the gear is controlled by the alternating current servo motor 1;
when the electromagnetic brake 3 is powered off and the manual shifting fork 18 is in an upward position, the motor is in a brake-contracting state, the power source is the hand wheel 22, when the hand wheel 22 is rotated, the hand wheel 22 drives the sun gear 21 of the planetary gear set to rotate, the sun gear 21 of the planetary gear set drives the planetary pinion 19 of the planetary gear set to rotate, and the planetary pinion 19 of the planetary gear set drives the planetary gear carrier 17 to rotate. At this time, since the manual fork 18 is positioned at the upper position, the carrier 17 is connected to the clutch engaging sleeve 16, and the clutch engaging sleeve 16 is connected to the special nut 15 with inner and outer spline grooves. Then, the rotation of the planet gear carrier 17 drives the clutch engaging sleeve 16 to rotate, the clutch engaging sleeve 16 drives the special-shaped nut 15 with the internal and external spline grooves to rotate, the rotation of the special-shaped nut 15 with the internal and external spline grooves drives the external spline shaft 14 to rotate, and further drives the worm gear shaft 13, the rotation of the worm gear shaft 13 drives the rotation of the worm shaft 23, the rotation of the worm shaft 23 promotes the rotation of the second worm gear 24, and finally the angular stroke motion of the angular stroke quick-cut-off electric actuator is realized.
(2) The specific principle of the invention for realizing rapid turn-off by adopting the disc spring energy storage system is as follows:
when the power system is powered off due to an accident or other reasons, the alternating current servo motor 1 and the electromagnetic brake 3 are powered off simultaneously, no torque exists in the motor, the screw nut 26 is in a free rotation state, the screw nut 26 is pushed to move leftwards by elastic potential energy stored in the disc spring 27 below, the ball screw 25 generates rotation motion, the worm shaft 23 is driven to rotate in the opposite direction, the rotation of the worm shaft 23 promotes the rotation of the second worm wheel 24, and finally the rapid turn-off of the angle travel valve after the power failure is realized.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent flow transformations made by using the contents of the specification and the drawings, or applied directly or indirectly to other related systems, are included in the scope of the present invention.
Claims (7)
1. The utility model provides a dish spring energy storage servo direct drive formula angle stroke fast turn-off executing device that resets which characterized in that:
the energy storage and resetting device comprises a power mechanism, a power switching mechanism, a transmission system and an energy storage and resetting mechanism;
the power mechanism drives the transmission system to realize stroke output;
the power mechanism comprises an electric drive system and a manual operation system;
the power switching mechanism is used for realizing switching between an electric drive system and a manual operation system;
the energy storage reset mechanism is used for switching off the electric actuating mechanism when the electric driving system loses power;
the transmission mechanism comprises a worm wheel shaft (13), a worm shaft (23) and a second worm wheel (24), wherein the worm wheel shaft (13) is provided with a first worm wheel (12), the worm shaft (23) is fixedly connected with the worm wheel shaft (13), and the second worm wheel (24) is meshed with the worm shaft (23).
2. The disc spring energy storage reset servo direct-drive angular travel rapid turn-off executing device according to claim 1, characterized in that:
the electric drive system comprises an alternating current servo motor (1), a power output shaft of the alternating current servo motor (1) is an alternating current servo screw output shaft (2), and the power output shaft is a screw part on the alternating current servo screw output shaft (2) and is meshed with a first worm wheel (12).
3. The disc spring energy storage reset servo direct-drive angular travel rapid turn-off executing device as claimed in claim 2, wherein:
the manual operation system comprises a hand wheel (22) and a speed reducer;
the speed reducer comprises a planetary gear set, the planetary gear set comprises a planetary gear set sun gear (21), planetary gear set planet pinions (19) and a planetary gear carrier (17), a hand wheel (22) is connected with the planetary gear set sun gear (21), the planetary gear set sun gear (21) is meshed with the planetary gear set planet pinions (19), and the planetary gear carrier (17) is matched with the planetary gear set planet pinions (19).
4. The disc spring energy storage reset servo direct-drive angular travel rapid turn-off executing device as claimed in claim 3, wherein:
the power switching mechanism comprises a clutch engaging sleeve (16) with an internal spline groove, a manual shifting fork (18) and an external spline shaft (14);
the outer spline shaft (14) is fixedly connected with one end of the worm wheel shaft (13), the outer side of the outer spline shaft (14) is matched and assembled with a special-shaped nut (15) with an inner spline groove and an outer spline groove, and a clutch engaging sleeve (16) with the inner spline groove is arranged on the outer side of the special-shaped nut (15) with the inner spline groove and the outer spline groove and can slide along the axial direction;
the end part of the planet gear carrier (17) is provided with an external spline groove, and the inner side of the clutch joint sleeve (16) with the internal spline groove can be matched with the end part of the planet gear carrier (17) provided with the external spline groove;
a manual shift fork (18) is connected to a clutch engaging sleeve (16) with an internally splined groove.
5. The disc spring energy storage reset servo direct-drive angular travel rapid turn-off executing device as claimed in claim 4, wherein:
the brake device further comprises an electromagnetic brake (3), and the electromagnetic brake (3) is used for braking the alternating current servo motor (1).
6. The disc spring energy storage reset servo direct-drive angular travel rapid turn-off executing device according to claim 5, characterized in that:
the device also comprises a first outer shell (4), a second outer shell (6) and a third outer shell (9); the first outer shell (4) and the third outer shell (9) are respectively fixed at two ends of the second outer shell (6);
the alternating current servo motor (1) is arranged outside the first outer shell (4); the energy storage reset mechanism is arranged in the third outer shell (9).
7. The disc spring energy storage reset servo direct-drive angular travel rapid turn-off executing device according to claim 6, characterized in that:
the energy storage reset mechanism comprises a ball screw (25) and a disc spring (27);
the ball screw (25) is fixedly connected to one end of the worm shaft (23), a screw nut (26) is arranged on the ball screw (25), a disc spring (27) is sleeved on the ball screw (25), the disc spring (27) is located between the screw nut (26) and a second end cover (11), and the second end cover (11) is fixed on a third outer shell (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010139435.XA CN111425648A (en) | 2020-03-03 | 2020-03-03 | Disc spring energy storage reset servo direct-drive type angular travel rapid turn-off executing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010139435.XA CN111425648A (en) | 2020-03-03 | 2020-03-03 | Disc spring energy storage reset servo direct-drive type angular travel rapid turn-off executing device |
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| Publication Number | Publication Date |
|---|---|
| CN111425648A true CN111425648A (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010139435.XA Pending CN111425648A (en) | 2020-03-03 | 2020-03-03 | Disc spring energy storage reset servo direct-drive type angular travel rapid turn-off executing device |
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| CN (1) | CN111425648A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984193A (en) * | 2021-02-23 | 2021-06-18 | 中国石化销售有限公司华南分公司 | Spring reset electric actuator |
| CN113124277A (en) * | 2021-04-26 | 2021-07-16 | 东营科技职业学院 | Intelligent interactive integrated equipment for preschool education |
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| CN209213017U (en) * | 2018-12-28 | 2019-08-06 | 湖北泰和石化设备有限公司 | Electric sealed butterfly valve |
| CN110185834A (en) * | 2019-06-17 | 2019-08-30 | 中国石油大学(华东) | A kind of underwater complete electric production tree valve actuator of pressure balance type |
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| CN201014017Y (en) * | 2007-03-16 | 2008-01-30 | 天津市瑞德自动化仪表技术有限公司 | Electric activator |
| CN201875254U (en) * | 2010-12-08 | 2011-06-22 | 周仁常 | Valve electric-manual device |
| CN202042986U (en) * | 2011-05-25 | 2011-11-16 | 王远鸣 | Double-motor high-reliability electric actuating mechanism |
| CN103759061A (en) * | 2014-01-20 | 2014-04-30 | 石特阀门股份有限公司 | Novel electric quick valve closing device |
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| CN110185834A (en) * | 2019-06-17 | 2019-08-30 | 中国石油大学(华东) | A kind of underwater complete electric production tree valve actuator of pressure balance type |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984193A (en) * | 2021-02-23 | 2021-06-18 | 中国石化销售有限公司华南分公司 | Spring reset electric actuator |
| CN112984193B (en) * | 2021-02-23 | 2022-11-08 | 中国石化销售有限公司华南分公司 | Spring reset electric actuator |
| CN113124277A (en) * | 2021-04-26 | 2021-07-16 | 东营科技职业学院 | Intelligent interactive integrated equipment for preschool education |
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Effective date of registration: 20201110 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant after: China Petroleum & Chemical Corp. Applicant after: South China branch of Sinopec Sales Co.,Ltd. Applicant after: XI'AN JIAOTONG University Address before: 510620 38-40 tower, A tower, Sinopec building, 191 Sports West Road, Tianhe District, Guangzhou, Guangdong. Applicant before: South China branch of Sinopec Sales Co.,Ltd. Applicant before: XI'AN JIAOTONG University |
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Application publication date: 20200717 |