CN113738219A - Automatic opening and closing cabin door of large-diameter vacuum pipeline - Google Patents
Automatic opening and closing cabin door of large-diameter vacuum pipeline Download PDFInfo
- Publication number
- CN113738219A CN113738219A CN202010464168.3A CN202010464168A CN113738219A CN 113738219 A CN113738219 A CN 113738219A CN 202010464168 A CN202010464168 A CN 202010464168A CN 113738219 A CN113738219 A CN 113738219A
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- Prior art keywords
- vacuum pipeline
- transmission device
- cabin door
- automatic opening
- closing
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- 230000005540 biological transmission Effects 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 6
- 239000004429 Calibre Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/614—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by meshing gear wheels, one of which being mounted at the wing pivot axis; operated by a motor acting directly on the wing pivot axis
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/77—Power-operated mechanisms for wings with automatic actuation using wireless control
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2999/00—Subject-matter not otherwise provided for in this subclass
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention discloses a vacuum pipeline opening and closing cabin door, which comprises: the cylinder end flange is arranged on the round end surface of the vacuum pipeline; the C-shaped sealing ring is arranged between the flange at the end part of the cylinder body and the hatch cover; the locking mechanism is used for locking the cabin cover and the end flange of the barrel; one side of the transmission device is fixedly connected with the outer surface of the hatch cover, and the other side of the transmission device is fixedly connected with a flange at the end part of the cylinder body; the speed reducing motor is connected with the transmission device; and the remote control system is in signal connection with the speed reducing motor. The invention has the beneficial effects that: the automatic opening and closing of the cabin door are realized through the remote control system, manual participation is not needed, the opening and closing efficiency of the cabin door is improved, and meanwhile, the safety in the operation process is also improved; in addition, by using the speed reducing motor as a driving system, the motor has good mechanical performance and stability.
Description
Technical Field
The invention relates to the technical field of super high-speed rail vacuum pipelines, in particular to an automatic opening and closing cabin door of a large-caliber vacuum pipeline.
Background
The super high-speed rail is a transportation tool taking vacuum steel pipe transportation as a theoretical core, and has the characteristics of super high speed, high safety, low energy consumption, low noise, low pollution and the like. In recent years, research and experimental work of super high-grade iron projects are gradually carried out in countries such as the United states, Russia and the like, and China also starts relevant work experiments and research in the beginning of the century. The automatic opening and closing cabin door of the large-caliber vacuum pipeline is an important component of super high-speed rail, so that the vacuum degree in the vacuum pipeline can be maintained, and equipment in the vacuum pipeline can be installed, inspected and maintained. The research and design of the automatic opening and closing cabin door structure of the large-caliber vacuum pipeline in China are in the starting stage, and no design and use experience exists in China.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an automatic opening and closing cabin door of a large-caliber vacuum pipeline.
The invention provides a vacuum pipeline opening and closing cabin door, which comprises:
the cylinder end flange is arranged on the round end surface of the vacuum pipeline;
the C-shaped sealing ring is arranged between the flange at the end part of the cylinder body and the hatch cover;
the locking mechanism is used for locking the hatch cover and the end flange of the cylinder body;
one side of the transmission device is fixedly connected with the outer surface of the hatch cover, and the other side of the transmission device is fixedly connected with the end flange of the cylinder body;
the speed reducing motor is connected with the transmission device;
and the remote control system is in signal connection with the speed reducing motor.
As a further improvement of the present invention, the locking mechanism includes a first locking device and a second locking device matched with the first locking device, the first locking device is disposed on the end flange of the cylinder, and the second locking device is disposed at a corresponding position of the hatch cover.
As a further improvement of the invention, the transmission device comprises a driving shaft, a connecting shaft and a driven shaft, wherein the driving shaft is horizontally arranged at two ends of the connecting shaft, and the driven shaft is vertically arranged at one end of the driving shaft.
As a further improvement of the invention, the transmission device is connected with an output shaft of the speed reducing motor through a driving shaft arranged at the bottom end of the transmission device.
As a further development of the invention, the transmission device is fixedly connected to the outer surface of the hatch by means of a driven shaft.
As a further improvement of the invention, the transmission device is fixedly connected with the flange at the end part of the cylinder body through a connecting rod arranged at the other end of the driving shaft.
As a further development of the invention, the driven shaft is fixedly connected to the outer surface of the hatch by means of a second weld plate.
As a further improvement of the invention, the connecting rod is fixedly connected with the end flange of the cylinder body through a first welding plate.
As a further improvement of the invention, the C-shaped sealing ring is attached to the surface of the end flange of the cylinder body.
As a further improvement of the invention, the locking mechanism and the transmission are arranged opposite to each other on both sides of the hatch.
The invention has the beneficial effects that: the automatic opening and closing of the cabin door are realized through the remote control system, manual participation is not needed, the opening and closing efficiency of the cabin door is improved, and meanwhile, the safety in the operation process is also improved; in addition, by using the speed reducing motor as a driving system, the motor has good mechanical performance and stability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural view of an automatic opening and closing door of a large-caliber vacuum pipeline according to an embodiment of the invention;
fig. 2 is a top view of an automatic opening and closing door of a large-caliber vacuum pipeline according to an embodiment of the invention.
In the figure, the position of the upper end of the main shaft,
1. a C-shaped sealing ring; 2. a flange at the end part of the cylinder body; 3. a locking mechanism; 4. a hatch cover; 5. a transmission device; 51. a drive shaft; 52. a connecting shaft; 53. a driven shaft; 6. a reduction motor; 7. a remote control system; 8. a first weld plate; 9. a second weld plate; 10. a connecting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, in the description of the present invention, the terms used are for illustrative purposes only and are not intended to limit the scope of the present invention. The terms "comprises" and/or "comprising" are used to specify the presence of stated elements, steps, operations, and/or components, but do not preclude the presence or addition of one or more other elements, steps, operations, and/or components. The terms "first," "second," and the like may be used to describe various elements, not necessarily order, and not necessarily limit the elements. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified. These terms are only used to distinguish one element from another. These and/or other aspects will become apparent to those of ordinary skill in the art in view of the following drawings, and the description of the embodiments of the present invention will be more readily understood by those of ordinary skill in the art. The drawings are only for purposes of illustrating the described embodiments of the invention. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated in the present application may be employed without departing from the principles described in the present application.
As shown in fig. 1-2, the embodiment of the present invention is described in detail by taking a vacuum large-caliber pipe with a diameter of 3m and a vacuum pressure of 0.001atm as an example, and the automatic opening and closing door of the large-caliber vacuum pipe comprises:
and the cylinder end flange 2 is arranged on the round end surface of the vacuum pipeline. The cylinder end flange 2 is fixedly connected to the circular end face of the vacuum pipeline, and can be fixedly connected in a welding or bolt mode, and other fixedly connected modes can be selected according to specific working conditions in practical application, so that the vacuum pipeline is not limited to the two connection modes.
And the C-shaped sealing ring 1 is arranged between the cylinder end flange 2 and the hatch cover 4. After the hatch cover 4 is locked with the flange 2 at the end part of the cylinder body, the C-shaped sealing ring 1 is used for realizing the sealing of the vacuum pipeline, and the vacuum degree of the vacuum pipeline is prevented from being influenced by the air leakage phenomenon of the vacuum pipeline.
And a locking mechanism 3 for locking between the hatch 4 and the barrel end flange 2.
One side of the transmission device 5 is fixedly connected with the outer surface of the hatch cover 4, and the other side of the transmission device 5 is fixedly connected with the end flange 2 of the cylinder body. The transmission 5 serves on the one hand to achieve a connection between the hatch 4 and the cylinder end flange 2 and on the other hand to drive the hatch 4 open and closed.
A reduction motor 6 connected to the transmission 5; the gear motor 6 is used for providing power for the transmission device 5, the gear motor 6 in the embodiment is a gear motor, and the gear motor is an alternating current speed reduction single machine, can rotate in a forward direction and a reverse direction and is used for controlling the opening and closing of the hatch cover 4. In practical application, other types of speed reducing motors can be selected according to specific working conditions, and the speed reducing motors are not limited to gear speed reducing motors.
And the remote control system 7 is in signal connection with the speed reducing motor 6. The remote control system 7 is used for controlling the action of the speed reducing motor 6, and the hatch cover 4 can be opened and closed by adopting the remote control system 7, so that the manual participation is avoided, the opening and closing efficiency of the hatch door is improved, and the risk of the manual participation is effectively reduced.
Further, the locking mechanism 3 comprises a first locking device and a second locking device matched with the first locking device, the first locking device is arranged on the flange 2 at the end part of the cylinder body, and the second locking device is arranged at the corresponding position of the hatch cover 4. The locking mechanism 3 can be selected from a buckle locking device, a bolt locking device and the like, and the proper locking mechanism 3 can be selected according to specific working conditions in specific use, so that the locking mechanism is not limited to the two locking devices.
Further, the transmission device 5 comprises a driving shaft 51, a connecting shaft 52 and a driven shaft 53, wherein the driving shaft 51 is horizontally arranged at two ends of the connecting shaft 52, and the driven shaft 53 is vertically arranged at one end of the driving shaft 51.
Further, the transmission 5 is connected with an output shaft of the reduction motor 6 through a drive shaft 51 provided at a bottom end thereof.
Further, the transmission device 5 is fixedly connected with the cylinder end flange 2 through a connecting rod 10 arranged at the other end of the driving shaft 51.
The driving shafts 51 are two, the two driving shafts 51 are horizontally arranged at the top end and the bottom end of the connecting shaft 52, the output shaft of the speed reducing motor 6 is connected with the driving shaft 51 at the bottom end, on one hand, the speed reducing motor 6 is convenient to fix, and on the other hand, the synchronism of the actions of the two driving shafts 51 can be ensured only by arranging one speed reducing motor 6. The connecting shaft 52 is used for driving the top driving shaft 51 to move, and ensures that the two driving shafts 51 move synchronously. The number of the driven shafts 53 is two, each driven shaft 53 corresponds to one driving shaft 51, the driven shafts 53 are vertically arranged at the left ends of the driving shafts 51, and the right ends of the driving shafts 51 are respectively and vertically provided with one connecting rod 10 for connecting the driven shafts with the barrel end flange 2.
Further, the transmission 5 is fixedly connected with the outer surface of the hatch 4 through a driven shaft 53.
Further, the driven shaft 53 is fixedly connected with the outer surface of the hatch 4 through the second weld plate 9.
The second welding plate 9 is welded and fixed on the outer surface of the hatch 4, and the driven shaft 53 is fixedly connected with the second welding plate 9 and used for fixing the left side of the transmission device 5 on the hatch 4.
Further, the connecting rod 10 is fixedly connected with the cylinder end flange 2 through the first welding plate 8.
The first welding plate 8 is welded and fixed on the cylinder end flange 2, and the connecting rod 10 is fixedly connected with the first welding plate 8 and used for fixing the right side of the transmission device 5 on the cylinder end flange 2.
Further, the C-shaped sealing ring 1 is attached to the surface of the end flange 2 of the cylinder body. In the embodiment, the C-shaped sealing ring 1 is flatly attached to the surface of the flange 2 at the end part of the cylinder body, and the C-shaped sealing ring 1 can be flatly attached to the corresponding position on the inner side of the cabin cover 4 in the actual application process, so that the C-shaped sealing ring 1 can play a sealing role along with a vacuum pipeline.
Further, the locking mechanism 3 and the transmission 5 are disposed opposite to each other on both sides of the hatch 4. In the embodiment, the locking mechanism 3 is arranged on the left side of the hatch cover 4, and the transmission device 5 is arranged on the right side of the hatch cover 4, so that the locking mechanism 3 can be operated by a worker conveniently. The locking mechanism 3 and the transmission device 5 can be arranged at other positions when in use, and are not limited to the arrangement mode of being oppositely arranged at the left side and the right side of the hatch cover 4.
The working principle of the automatic opening and closing cabin door of the large-caliber vacuum pipeline provided by the invention is as follows: when the vacuum pipeline needs to close the cabin door, firstly, the remote control system 7 sends instruction information to the speed reducing motor 6 to control the speed reducing motor to operate, so that the speed reducing motor 6 transmits power to the driving shaft 51 at the bottom end, and the driving shaft at the top end is driven by the connecting shaft 52 to synchronously act along with the driving shaft 51 at the bottom end. The two driving shafts 51 drive the corresponding driven shafts 53 to act, the hatch 4 is driven by the driven shafts 53 to gradually approach the cylinder end flange 2 until the hatch 4 and the cylinder end flange 2 clamp the C-shaped sealing ring 1 tightly, the remote control system 7 sends out instruction information again, the speed reduction motor 6 is closed, and after the locking mechanism 3 is operated to complete locking action, the vacuum pipeline hatch is closed. When the hatch door needs to be opened, the same steps are adopted, the speed reducing motor 6 rotates reversely, and the remote control system 7 controls the speed reducing motor 6 to operate to the appointed position, namely the hatch door opening process is finished.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those of ordinary skill in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
It will be understood by those skilled in the art that while the present invention has been described with reference to exemplary embodiments, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The utility model provides a heavy-calibre vacuum pipe automatic start-stop hatch door which characterized in that includes:
the cylinder end flange (2) is arranged on the round end surface of the vacuum pipeline;
the C-shaped sealing ring (1) is arranged between the cylinder end flange (2) and the hatch cover (4);
a locking mechanism (3) for locking between the hatch (4) and the barrel end flange (2);
one side of the transmission device (5) is fixedly connected with the outer surface of the hatch cover (4), and the other side of the transmission device (5) is fixedly connected with the end flange (2) of the cylinder body;
a reduction motor (6) connected to the transmission (5);
and the remote control system (7) is in signal connection with the speed reducing motor (6).
2. The automatic opening and closing cabin door of the large-caliber vacuum pipeline according to claim 1, characterized in that the locking mechanism (3) comprises a first locking device and a second locking device matched with the first locking device, the first locking device is arranged on the barrel end flange (2), and the second locking device is arranged at the corresponding position of the cabin cover (4).
3. The automatic opening and closing cabin door of the large-caliber vacuum pipeline according to claim 1, characterized in that the transmission device (5) comprises a driving shaft (51), a connecting shaft (52) and a driven shaft (53), wherein the driving shaft (51) is horizontally arranged at two ends of the connecting shaft (52), and the driven shaft (53) is vertically arranged at one end of the driving shaft (51).
4. The automatic opening and closing cabin door of large-caliber vacuum pipeline according to claim 3, characterized in that the transmission device (5) is connected with the output shaft of the speed reducing motor (6) through a driving shaft (51) arranged at the bottom end of the transmission device.
5. The automatic opening and closing cabin door of the large-caliber vacuum pipeline as claimed in claim 3, characterized in that the transmission device (5) is fixedly connected with the outer surface of the cabin cover (4) through a driven shaft (53).
6. The automatic opening and closing cabin door of the large-caliber vacuum pipeline according to claim 3, characterized in that the transmission device (5) is fixedly connected with the cylinder end flange (2) through a connecting rod (10) arranged at the other end of the driving shaft (51).
7. The automatic opening and closing cabin door of the large-caliber vacuum pipeline as claimed in claim 5, characterized in that the driven shaft (53) is fixedly connected with the outer surface of the cabin cover (4) through a second welding plate (9).
8. The automatic opening and closing cabin door of the large-caliber vacuum pipeline as claimed in claim 6, characterized in that the connecting rod (10) is fixedly connected with the barrel end flange (2) through a first welding plate (8).
9. The automatic opening and closing cabin door of a large-caliber vacuum pipeline according to claim 1, characterized in that the C-shaped sealing ring (1) is attached to the surface of the barrel end flange (2).
10. The automatic opening and closing cabin door of the large-caliber vacuum pipeline according to claim 1, characterized in that the locking mechanism (3) and the transmission device (5) are oppositely arranged at two sides of the cabin cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010464168.3A CN113738219A (en) | 2020-05-27 | 2020-05-27 | Automatic opening and closing cabin door of large-diameter vacuum pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010464168.3A CN113738219A (en) | 2020-05-27 | 2020-05-27 | Automatic opening and closing cabin door of large-diameter vacuum pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113738219A true CN113738219A (en) | 2021-12-03 |
Family
ID=78723931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010464168.3A Pending CN113738219A (en) | 2020-05-27 | 2020-05-27 | Automatic opening and closing cabin door of large-diameter vacuum pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113738219A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0312121D0 (en) * | 2002-07-02 | 2003-07-02 | R & M Energy Systems L P | Closure for a pressure vessel and method |
| US20040004081A1 (en) * | 2001-11-05 | 2004-01-08 | Mcguire Doughlas J. | Closure for a pressure vessel and method |
| CN201502697U (en) * | 2009-10-12 | 2010-06-09 | 牡丹江市金环石化设备有限公司 | Expansible ring type quick-opening blind plate |
| CN103821931A (en) * | 2014-02-27 | 2014-05-28 | 沈阳鑫联石化设备有限公司 | Locking ring type quick-opening blind plate |
| CN204004365U (en) * | 2014-08-26 | 2014-12-10 | 中国船舶重工集团公司第七一九研究所 | A kind of manned pressure vessel fast lid opening device |
| CN104712759A (en) * | 2013-12-13 | 2015-06-17 | 兰州凯兰德科技实业有限公司 | High-pressure container plug opening/closing device |
| CN104959078A (en) * | 2015-07-06 | 2015-10-07 | 江苏博拓新型建筑材料有限公司 | Autoclave door-opening device |
| CN206347104U (en) * | 2016-12-10 | 2017-07-21 | 牡丹江市金环石化设备有限公司 | A kind of fast opening blind with motor drive mechanism |
| CN213391694U (en) * | 2020-05-27 | 2021-06-08 | 中国石油天然气集团有限公司 | Automatic opening and closing cabin door of large-diameter vacuum pipeline |
-
2020
- 2020-05-27 CN CN202010464168.3A patent/CN113738219A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040004081A1 (en) * | 2001-11-05 | 2004-01-08 | Mcguire Doughlas J. | Closure for a pressure vessel and method |
| GB0312121D0 (en) * | 2002-07-02 | 2003-07-02 | R & M Energy Systems L P | Closure for a pressure vessel and method |
| CN201502697U (en) * | 2009-10-12 | 2010-06-09 | 牡丹江市金环石化设备有限公司 | Expansible ring type quick-opening blind plate |
| CN104712759A (en) * | 2013-12-13 | 2015-06-17 | 兰州凯兰德科技实业有限公司 | High-pressure container plug opening/closing device |
| CN103821931A (en) * | 2014-02-27 | 2014-05-28 | 沈阳鑫联石化设备有限公司 | Locking ring type quick-opening blind plate |
| CN204004365U (en) * | 2014-08-26 | 2014-12-10 | 中国船舶重工集团公司第七一九研究所 | A kind of manned pressure vessel fast lid opening device |
| CN104959078A (en) * | 2015-07-06 | 2015-10-07 | 江苏博拓新型建筑材料有限公司 | Autoclave door-opening device |
| CN206347104U (en) * | 2016-12-10 | 2017-07-21 | 牡丹江市金环石化设备有限公司 | A kind of fast opening blind with motor drive mechanism |
| CN213391694U (en) * | 2020-05-27 | 2021-06-08 | 中国石油天然气集团有限公司 | Automatic opening and closing cabin door of large-diameter vacuum pipeline |
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Application publication date: 20211203 |
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| RJ01 | Rejection of invention patent application after publication |