CN111973914A - Transformer substation wheel type inspection robot with automatic fire extinguishing function - Google Patents
Transformer substation wheel type inspection robot with automatic fire extinguishing function Download PDFInfo
- Publication number
- CN111973914A CN111973914A CN202010812253.4A CN202010812253A CN111973914A CN 111973914 A CN111973914 A CN 111973914A CN 202010812253 A CN202010812253 A CN 202010812253A CN 111973914 A CN111973914 A CN 111973914A
- Authority
- CN
- China
- Prior art keywords
- storage bin
- fire extinguishing
- automatic fire
- inspection robot
- extinguishing function
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 31
- 238000001931 thermography Methods 0.000 claims abstract description 19
- 230000007704 transition Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 14
- 230000001413 cellular effect Effects 0.000 claims 1
- 239000007921 spray Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/10—Terrestrial scenes
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
- G07C1/20—Checking timed patrols, e.g. of watchman
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Manipulator (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses a transformer substation wheel type inspection robot with an automatic fire extinguishing function, which comprises a fire extinguishing device and a control system, wherein the control system is realized by a single chip microcomputer, an image recognition system is arranged on a single-side machine, and is connected with a signal transmitter, a thermal imaging camera, a motor and a power supply, the thermal imaging camera is arranged on a bracket, the bracket can rotate, and the fire extinguishing device comprises a spray head, a first storage bin, a second storage bin, a first electromagnetic valve, a second electromagnetic valve and a transition bin. The invention has simple structure, wide inspection range, automatic fire extinguishing function and high safety.
Description
Technical Field
The invention relates to the technical field of ground robots, in particular to a transformer substation wheel type inspection robot with an automatic fire extinguishing function.
Background
The transformer substation is an important place for converting voltage and current, receiving electric energy and distributing electric energy in an electric power system, and has the characteristics of large voltage, complex environment and easiness in fire hazard. The fire of transformer substation takes place the most frequently in contrast, and present inspection robot only can send the fire source signal to the staff, lets the staff handle and carry out the precautionary measure, and this greatly increased the danger coefficient of transformer substation, and if do not handle the fire source in time effectually, probably take place quite serious conflagration, even explosion.
Disclosure of Invention
The invention aims to: the wheel type inspection robot for the transformer substation with the automatic fire extinguishing function solves the problem that the fire disaster is not timely processed due to the fact that the conventional inspection robot for the transformer substation does not have the automatic fire extinguishing function.
The technical scheme of the invention is as follows:
a transformer substation wheel type inspection robot with an automatic fire extinguishing function comprises a vehicle body and a single chip microcomputer, wherein a thermal imaging camera and a fire extinguishing device are mounted above the vehicle body, the single chip microcomputer is provided with an image recognition system, the thermal imaging cameras are arranged at the left end and the right end of the upper portion of the vehicle body through brackets, the brackets are matched with and driven by a motor to rotate through first gears and second gears, the fire extinguishing device comprises a nozzle, a first storage bin, a second storage bin, a first electromagnetic valve, a second electromagnetic valve and a transition bin, the nozzle is arranged in a honeycomb shape, dry powder for fire extinguishing is placed in the first storage bin, pure water for fire extinguishing is placed in the second storage bin, a pressure pipe is arranged on one side of each of the first storage bin and the second storage bin, and a plug connected with the pressure pipe through a rope is arranged on the pressure pipe, the top of the first storage bin and the second storage bin is provided with a storage bin top cover.
Furthermore, the model of singlechip can be SPCA563B, and input port connection power, thermal imaging camera, output port connection first solenoid valve, second solenoid valve, motor, signal transmitter.
Furthermore, the motor is a servo motor, the model of the motor can be EDSMT-2T110-020A, and the rotation angle and the rotation frequency of the support can be controlled through a program written in by the single chip microcomputer.
Further, the top of storehouse and storage storehouse top cap all are provided with the bolt hole for first storehouse, the second of storing, first storehouse, second are stored the top in storehouse and are stored and install seal ring in the middle of the storehouse top cap, first storehouse, second are stored the storehouse and are separated by the baffle.
Further, a sealing gasket is arranged at the top end of the baffle and is concave.
Furthermore, one end of the pressurizing pipe, which is far away from the first storage bin and the second storage bin, is provided with a conical internal thread, and the plug is provided with an external thread matched with the conical internal thread of the pressurizing pipe for use.
Further, the first electromagnetic valve and the second electromagnetic valve respectively control the first storage bin and the second storage bin.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the wheel type inspection robot for the transformer substation with the automatic fire extinguishing function is provided with the automatic fire extinguishing device, so that the fire extinguishing treatment can be timely and effectively carried out when a fire source of the transformer substation is small when a fire disaster occurs, and the safety of the transformer substation is greatly ensured.
2. According to the transformer substation wheel type inspection robot with the automatic fire extinguishing function, the two storage bins are used for storing the fire extinguishing raw material dry powder and the pure water respectively, the wheel type inspection robot can select different fire extinguishing modes according to different fire conditions, and the correct fire extinguishing mode can conduct fire extinguishing treatment more effectively, timely and safely.
3. According to the transformer substation wheel type inspection robot with the automatic fire extinguishing function, the bracket provided with the thermal imaging camera can be driven to rotate through the gear, so that the inspection range of the inspection robot is greatly enlarged.
Drawings
Fig. 1 is a schematic structural diagram of a transformer substation wheel type inspection robot with an automatic fire extinguishing function;
fig. 2 is a cross-sectional view of a transformer substation wheel type inspection robot with an automatic fire extinguishing function in a top view direction;
fig. 3 is a sectional view of a fire extinguishing apparatus of the transformer substation wheel type inspection robot with an automatic fire extinguishing function;
fig. 4 is a schematic structural diagram of a bracket of the transformer substation wheel type inspection robot with an automatic fire extinguishing function;
FIG. 5 is a main process flow of an image recognition system of a transformer substation wheeled inspection robot with an automatic fire extinguishing function;
FIG. 6 is a frame diagram of an image recognition system of a transformer substation wheeled inspection robot with an automatic fire extinguishing function;
fig. 7 is a schematic diagram of a baffle structure of the transformer substation wheel type inspection robot with an automatic fire extinguishing function.
The labels in the figure are: 1-a vehicle body; 2-a thermal imaging camera; 3-a signal transmitter; 4-a fire extinguishing device; 5, a singlechip; 11-a power supply; 21-a scaffold; 41-a spray head; 42-a first storage bin; 43-a first solenoid valve; 44-a transition bin; 45-sealing gaskets; 46-a pressurized tube; 47-plug; 48-storage bin upper cover; 49-second storage bin; 211-a motor; 222-a first gear; 223-a second gear; 410-a baffle; 411-a sealing gasket; 412-second solenoid valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
Example one
Referring to fig. 1, 2 and 4, the invention discloses a transformer substation wheel type inspection robot with an automatic fire extinguishing function, which comprises a vehicle body 1 and a singlechip 5, a thermal imaging camera 2 and a fire extinguishing device 4 are arranged above the vehicle body 1, the singlechip is provided with an image recognition system, the image recognition system is an existing program, two thermal imaging cameras 2 are respectively arranged at the left end and the right end above the vehicle body 1 through brackets 2, the bracket 2 is matched with the first gear 222 and the second gear 223 and is driven by the motor 221 to rotate, the single chip microcomputer 5 is in the model of SPCA563B, the input port is connected with the power supply 11 and the thermal imaging camera 2, the output port is connected with the first electromagnetic valve 43, the second electromagnetic valve 412, the motor 221 and the signal emitter 3, the motor 221 is a servo motor and is EDSMT-2T110-020A in model. Support 2 can be in first gear 222 and second gear 223 cooperation and driven the rotation by motor 221, and its rotatory angle and frequency can be by the program control who writes into in singlechip 5, and thermal imaging camera 2 both can realize the purpose of patrolling and examining the surrounding environment, can also carry out the detection of a fire source, and thermal imaging camera 2 that can rotate then greatly increased the real-time range that the fire source detected and the scope of patrolling and examining.
Example two
Referring to fig. 1-6, the invention discloses a transformer substation wheel type inspection robot with an automatic fire extinguishing function, which comprises a fire extinguishing device 4 and a single chip microcomputer 5, wherein the single chip microcomputer 5 is in a model of SPCA563B, an input port is connected with a power supply 11 and a thermal imaging camera 2, an output port is connected with a first electromagnetic valve 43, a second electromagnetic valve 412, a motor 221 and a signal emitter 3, the fire extinguishing device 4 comprises a spray head 41, a first storage chamber 42, a second storage chamber 49, the first electromagnetic valve 43, the second electromagnetic valve 412 and a transition chamber 44, the spray head 41 is arranged in a honeycomb shape, the first storage chamber 42 is used for placing dry powder for fire extinguishing, the second storage chamber 49 is used for placing pure water for fire extinguishing, a pressurizing pipe 46 is arranged on one side of the first storage chamber 42 and the second storage chamber 49, a plug 47 which is connected through a rope and used with the pressurizing pipe 46 is arranged on the pressurizing pipe 46, a baffle 410 is arranged between the first storage chamber 42 and the second storage chamber 49, a sealing gasket 411 is arranged on the top of the baffle 410, the sealing gasket 411 is concave, a storage chamber top cover 48 is arranged on the top of the first storage chamber 42 and the top of the second storage chamber 49, bolt holes are arranged on the top of the storage chamber top cover 48 and the top of the first storage chamber 42 and the top of the second storage chamber 49, a sealing gasket 45 is arranged between the top of the first storage chamber 42 and the top of the second storage chamber 49 and the storage chamber top cover 48, the first electromagnetic valve 43 and the second electromagnetic valve 412 are connected on the output end of the singlechip 5 and controlled by a program written in the singlechip 5, the first electromagnetic valve 43 and the second electromagnetic valve 412 respectively control the first storage chamber 42 and the second storage chamber 49, the thermal imaging camera 2 is used as an image input module to be matched with an image recognition system, the first storage chamber 42 and the second storage chamber 49 can be pressurized from a pressurizing pipe 46 through a pressurizing pump, the first storage chamber 42 and the second storage chamber 49 are brought into a high pressure state.
When the vehicle body 1 moves, the image recognition system recognizes the real-time image of the thermal imaging camera 2 and sends the image signal to the base station through the signal transmitter 3, so that the function of routing inspection is realized.
When the vehicle body 1 moves to a fire source, the thermal imaging camera 2 is used, so that the temperature information is also input into the singlechip 5, an image recognition system loaded in the singlechip 5 can recognize the image and the temperature information input by the thermal imaging camera, the type of the fire source can be recognized through the image and the temperature information, the image recognition system will send different signals to the programs written in the single chip 5 for controlling the first electromagnetic valve 43 and the second electromagnetic valve 412 according to the recognized different kinds of fire sources, then, the program written in the single chip 5 will select to open the corresponding solenoid valve, and the dry powder in the first storage chamber 42 or the pure water in the second storage chamber 49 will pass through the first solenoid valve 43 or the second solenoid valve 412 under the action of pressure, enter the transition chamber 44, and then continuously sprayed from the spray head 41 under the pressure, thereby extinguishing the fire source.
EXAMPLE III
Referring to fig. 3 and 7, the fire extinguishing apparatus of the wheel type inspection robot for a substation with an automatic fire extinguishing function according to the present invention can be recycled, bolts installed in bolt holes at the tops of the storage bin top cover 48 and the first and second storage bins 42 and 49 are unscrewed, the storage bin top cover 48 can be opened, so that dry powder or pure water is added into the first or second storage bin 42 or 49, then the sealing washer 45 is installed on the contact surface between the storage bin top cover 48 and the first and second storage bins 42 and 49 before the top of the storage bin top cover 48 and the top of the first and second storage bins 42 and 49 are sealed, then the two storage bins are tightly contacted, and the bolts are installed, because the concave sealing washer 411 at the top of the partition plate 410 between the first and second storage bins 42 and 49 is tightly contacted with the storage bin top cover 48 to perform a sealing function, the first and second storage bins 42 and 49 are both in a sealing state, and then the first and second electromagnetic valves 43 and 412 are both controlled by the program in the single chip microcomputer 5 and are turned to a closed, the choke plug 47 is taken down, the first storage chamber 42 and the second storage chamber 49 are pressurized through the pressurizing pipe 46 by the pressurizing pump, after pressurization is completed, the choke plug 47 is quickly screwed into the pressurizing pipe 46 to complete sealing, and then the fire extinguishing device can be used normally.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents and improvements made by those skilled in the art within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a wheeled robot of patrolling and examining of transformer substation with automatic fire extinguishing function, characterized in that includes automobile body (1) and singlechip (5), thermal imaging camera (2), extinguishing device (4) are installed to automobile body (1) top, singlechip (5) load has the image recognition system, thermal imaging camera (2) have two, install both ends about automobile body (1) top through support (2) respectively, support (2) are through first gear (222) and second gear (223) cooperation and by motor (221) drive rotation, extinguishing device (4) include shower nozzle (41), first storage storehouse (42), second storage storehouse (49), first solenoid valve (43), second solenoid valve (412), transition storehouse (44), shower nozzle (41) are cellular arrangement, one side in first storage storehouse (42) and second storage storehouse (49) all is provided with forcing pipe (46), the pressurizing pipe (46) is provided with a plug (47) which is connected through a rope and is matched with the pressurizing pipe for use, and the tops of the first storage bin (42) and the second storage bin (49) are provided with storage bin top covers (48).
2. The transformer substation wheel type inspection robot with the automatic fire extinguishing function is characterized in that bolt holes are formed in the tops of the first storage bin (42) and the second storage bin (49) and the storage bin top cover (48), a sealing gasket (45) is mounted in the middles of the tops of the first storage bin (42) and the second storage bin (49) and the storage bin top cover (48), and the first storage bin (42) and the second storage bin (49) are separated by a baffle plate (410).
3. The substation wheel type inspection robot with the automatic fire extinguishing function according to claim 1, characterized in that one end of the pressure pipe (46) far away from the first storage bin (42) and the second storage bin (49) is provided with a conical internal thread, and the plug (47) is provided with an external thread matched with the conical internal thread of the pressure pipe (46).
4. A substation wheeled inspection robot with automatic fire extinguishing function according to claim 1, characterized in that the motor (221) is a servo motor.
5. A substation wheel type inspection robot with automatic fire extinguishing function according to claim 1, characterized in that the first solenoid valve (43) and the second solenoid valve (412) control the first storage bin (42) and the second storage bin (49), respectively.
6. The substation wheel type inspection robot with the automatic fire extinguishing function according to claim 2, characterized in that a sealing gasket (411) is arranged at the top end of the baffle (410), and the sealing gasket (411) is concave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812253.4A CN111973914A (en) | 2020-08-13 | 2020-08-13 | Transformer substation wheel type inspection robot with automatic fire extinguishing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812253.4A CN111973914A (en) | 2020-08-13 | 2020-08-13 | Transformer substation wheel type inspection robot with automatic fire extinguishing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111973914A true CN111973914A (en) | 2020-11-24 |
Family
ID=73434289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010812253.4A Pending CN111973914A (en) | 2020-08-13 | 2020-08-13 | Transformer substation wheel type inspection robot with automatic fire extinguishing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111973914A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1541496A1 (en) * | 2003-12-12 | 2005-06-15 | Fulvio Reggiani | Container for dispensing separate products |
| CN102068777A (en) * | 2011-01-26 | 2011-05-25 | 华中科技大学 | Portable piston-type water mist fire extinguisher |
| CN202135260U (en) * | 2011-07-30 | 2012-02-01 | 山东电力研究院 | Substation inspection robot HD image detection system |
| CN102881106B (en) * | 2012-09-10 | 2014-07-02 | 南京恩博科技有限公司 | Dual-detection forest fire identification system through thermal imaging video and identification method thereof |
| CN104436488A (en) * | 2014-11-25 | 2015-03-25 | 江苏泊普乐智能装备有限公司 | Multi-hole 3D wide-angle cluster nozzle |
| CN104825086A (en) * | 2015-04-30 | 2015-08-12 | 宝路驰机械扬州有限公司 | Outdoor portable type spraying device |
| CN208641608U (en) * | 2018-05-23 | 2019-03-26 | 深圳市科敏传感器有限公司 | A kind of comprehensive self-extinguishing machine people |
-
2020
- 2020-08-13 CN CN202010812253.4A patent/CN111973914A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1541496A1 (en) * | 2003-12-12 | 2005-06-15 | Fulvio Reggiani | Container for dispensing separate products |
| CN102068777A (en) * | 2011-01-26 | 2011-05-25 | 华中科技大学 | Portable piston-type water mist fire extinguisher |
| CN202135260U (en) * | 2011-07-30 | 2012-02-01 | 山东电力研究院 | Substation inspection robot HD image detection system |
| CN102881106B (en) * | 2012-09-10 | 2014-07-02 | 南京恩博科技有限公司 | Dual-detection forest fire identification system through thermal imaging video and identification method thereof |
| CN104436488A (en) * | 2014-11-25 | 2015-03-25 | 江苏泊普乐智能装备有限公司 | Multi-hole 3D wide-angle cluster nozzle |
| CN104825086A (en) * | 2015-04-30 | 2015-08-12 | 宝路驰机械扬州有限公司 | Outdoor portable type spraying device |
| CN208641608U (en) * | 2018-05-23 | 2019-03-26 | 深圳市科敏传感器有限公司 | A kind of comprehensive self-extinguishing machine people |
Non-Patent Citations (2)
| Title |
|---|
| 蔡鹤皋: "《机电一体化技术手册》", 28 February 1994, 机械工业出版社 * |
| 赵坚勇: "《电视原理与系统》", 31 July 2011, 西安电子科技大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207065102U (en) | A kind of liquid leakage automatic detection device | |
| US2800912A (en) | Mounting for pressure relief valve | |
| CN217497125U (en) | Storage tank sealing assembly | |
| CN111973914A (en) | Transformer substation wheel type inspection robot with automatic fire extinguishing function | |
| CN102879153B (en) | Special experimental detection device for spray guns | |
| CN206592540U (en) | A kind of compression leaking stoppage device | |
| CN209900489U (en) | Novel water system type water mist fire extinguishing device for lithium battery of electric vehicle | |
| CN207580569U (en) | A kind of environmental protective type chemical container | |
| CN212210458U (en) | Improved cable high-sealing structure | |
| CN109336042A (en) | Double-deck unloading handhole well | |
| CN211643157U (en) | High-safety anti-leakage chemical raw material storage tank | |
| CN211754845U (en) | Buffer tank | |
| CN220367185U (en) | Corrosion test tool for steel pipe | |
| CN209343013U (en) | A kind of through type sight glass | |
| CN205908919U (en) | Novel fast flange of opening | |
| CN110118287B (en) | Visual oil extraction device for oil-filled electrical equipment | |
| CN210311952U (en) | Sanitation vehicle back door sealing device | |
| CN206328807U (en) | A kind of fog gun car water supply installation | |
| CN208619491U (en) | A kind of automobile-used hexagon bolt with flange | |
| CN207122457U (en) | Auto switching and the valve block of self-locking | |
| CN200940162Y (en) | Maintenance rectanglar hole sealing cover for hopper charging bucket | |
| CN112946021A (en) | Visual square pipe explosive dust water smoke explosion suppression experimental apparatus | |
| CN217586294U (en) | Gas cylinder relief valve take-off detection device | |
| CN221155810U (en) | Leakage-proof gas filtering device | |
| CN205578435U (en) | A self tapping formula crossover sub for inciting somebody to action rod sensor installs on pressure vessel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201124 |
|
| RJ01 | Rejection of invention patent application after publication |