CN112901439A - Fire pump machinery emergency starting device with moisture-proof function - Google Patents
Fire pump machinery emergency starting device with moisture-proof function Download PDFInfo
- Publication number
- CN112901439A CN112901439A CN202110067198.5A CN202110067198A CN112901439A CN 112901439 A CN112901439 A CN 112901439A CN 202110067198 A CN202110067198 A CN 202110067198A CN 112901439 A CN112901439 A CN 112901439A
- Authority
- CN
- China
- Prior art keywords
- fire pump
- moisture
- starting device
- emergency starting
- proof function
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- 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
- 238000009423 ventilation Methods 0.000 claims abstract description 26
- 238000001125 extrusion Methods 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000006978 adaptation Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 abstract description 7
- 239000004744 fabric Substances 0.000 description 8
- 230000005484 gravity Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
Abstract
The invention belongs to the technical field of fire fighting equipment of building electrical design, and particularly relates to a fire pump mechanical emergency starting device with a moisture-proof function. This fire pump machinery emergency starting device with moisture-proof function, through setting up the surface mounting automatics at the fire pump wallboard, utilize among the automatics motor to be triggered by humidity transducer under the high humidity environment, the lifting that makes progress along the slide bar under the motor power drives, and then shelter from the ventilation groove through the tarpaulin, reduce the circulation of air with the external world in the fire pump, make in the unable fire pump machinery emergency starting device that gets into of external moisture, thereby make to have and be convenient for the dampproofing characteristics of fire pump machinery emergency starting device.
Description
Technical Field
The invention relates to the technical field of fire fighting equipment for building electrical design, in particular to a fire pump mechanical emergency starting device with a moisture-proof function.
Background
Fire pump control equipment plays a very important role in the field of building fire prevention all the time, along with the rapid development of cities, the possibility of fire occurrence in buildings is greatly increased by the application of various flammable building materials, even if a strict control circuit is adopted, the fire pump can be failed in a humid environment of a fire pump room, so that the fire pump cannot normally operate and cannot start pressurized water supply in time when a fire occurs, and the life and property safety of people is greatly damaged. Therefore, GB50974-2014 technical Specification for fire-fighting water supply and fire hydrant systems proposes that fire-fighting water pump control equipment should be provided with a mechanical emergency pump starting function, and the requirement that personnel with management authority start a fire-fighting water pump in an emergency when a control circuit in a control cabinet breaks down is met;
current fire pump machinery emergency starting device is because inside electric structure is too much, therefore need set up the ventilation groove on the surface of the cabinet body, thereby heat energy outdiffusion that produces the operation of electric structure, and then prevent the inside overheated of fire pump machinery emergency starting device, owing to set up the ventilation groove, it gets into inside fire pump machinery emergency starting device easily to lead to external moisture through the ventilation groove, a small amount of moisture can be heated by fire pump machinery emergency starting device's heat energy and evaporate, get into in fire pump machinery emergency starting device when a large amount of moisture, lead to the electric structure damage in the fire pump machinery emergency starting device to cause loss of property easily, therefore need both to guarantee the ventilation cooling in the fire pump machinery emergency starting device, dehumidify when moisture is overweight in fire pump machinery emergency starting device again.
Disclosure of Invention
The invention provides a fire pump mechanical emergency starting device with a moisture-proof function based on the technical problem that ventilation grooves are formed in the surface of the existing fire pump mechanical emergency starting device to cause moisture to enter and damage electrical equipment.
The fire pump mechanical emergency starting device with the moisture-proof function comprises a fire pump wall plate, wherein a ventilation groove is formed in the surface of the fire pump wall plate, an automatic device is mounted on the surface of the fire pump wall plate, the surface of the ventilation groove is automatically covered and opened through the automatic device according to the humidity and the temperature in a fire pump, the automatic device comprises guide rods, supporting devices are mounted on the opposite sides of the two guide rods, and each supporting device comprises a limiting box.
Preferably, the surface mounting of fire pump wallboard has humidity transducer, two the guide arm is located the both sides of ventilation groove respectively, the lower fixed surface of guide arm is connected with the mount, the surface mounting of mount has the tarpaulin, the surface mounting of tarpaulin has temperature sensor, the width of tarpaulin and the width adaptation of ventilation groove and align.
Preferably, the upper end of tarpaulin is fixed even has the slide bar, the fixed solid fixed ring that has cup jointed in the both ends of slide bar, gu fixed ring's lateral wall fixedly connected with stopper, the spacing groove has been seted up on the front end surface of guide arm, the inner wall of spacing groove and the surface adaptation of stopper.
Preferably, the inner wall of the limiting groove is in sliding connection with the surface of the limiting block, the upper end surface of the limiting block is fixedly connected with a steel wire rope, and the upper surface of the guide rod is fixedly connected with a power box.
Preferably, a first stop switch is installed on the surface of the front end of the power box, power cavities are formed in the inner walls of the two ends of the power box, rope grooves are formed in the lower surface of the power box and the upper surface of the guide rod, and the rope grooves are communicated with the power cavities and the limiting grooves.
Preferably, the inside wall and the wire rope sliding connection of grooving, power motor is installed to the inner wall in power chamber, power motor and the equal electric connection of first stop switch and humidity transducer, the capstan winch is installed to power motor's output shaft, the capstan winch is located the grooving directly over.
Preferably, the surface of the winch is fixedly connected with the tail end of the steel wire rope, two ends of the sliding rod are fixedly connected with rubber rods, and the surface of each rubber rod is sleeved with a spring.
Preferably, the tail end of the rubber rod is fixedly connected with movable blocks, the two movable blocks are respectively aligned with the two limiting boxes, the front end surface of each limiting box is provided with an extrusion groove, and the front end surface of each limiting box is hinged with an extrusion plate.
Preferably, a winding motor is installed on the inner wall of the extrusion groove, a pull rope is installed on the surface of an output shaft of the winding motor, and the tail end of the pull rope is fixedly connected with the surface of the rear end of the extrusion plate.
Preferably, a second stop switch is installed on the inner bottom wall of the front end of the extrusion groove, and the winding motor is electrically connected with the temperature sensor and the second stop switch.
The beneficial effects of the invention are as follows:
1. through setting up the surface mounting automatics at the fire pump wallboard, utilize among the automatics motor to be triggered by humidity transducer under high humidity environment, the ascending lifting of slide bar is followed to the power motor drive down, and then shelters from the ventilation groove through the tarpaulin, reduce in the fire pump with external circulation of air for in the unable fire pump machinery emergency starting drive that gets into of external moisture, thereby make to have and be convenient for the dampproofing characteristics of fire pump machinery emergency starting drive.
2. Through setting up the both sides installation strutting arrangement at the guide arm, when two movable blocks to the slide bar support through strutting arrangement, utilize the rolling motor in the strutting arrangement to be triggered by temperature sensor under high temperature environment, the rolling motor and then drives when the stripper plate upwards deflects through the stay cord, upwards extrude the surface movable block, the slide bar descends with the tarpaulin under the effect of gravity, the ventilation duct exposes, the inside and outside circulation of air of fire pump, and then fall the temperature in the fire pump, thereby make and have the characteristics of being convenient for cool down the protection in the emergent starting drive of fire pump machinery.
Drawings
Fig. 1 is a schematic view of a fire pump mechanical emergency starting device with a moisture-proof function according to the present invention;
fig. 2 is an enlarged structural view of a region a in fig. 1 of a fire pump mechanical emergency starting device with a moisture-proof function according to the present invention;
FIG. 3 is a sectional view of a power cavity structure of a fire pump mechanical emergency starting device with a moisture-proof function according to the present invention;
FIG. 4 is a perspective view of one end of a sliding rod structure of the emergency starting device of the fire pump machinery with the moisture-proof function according to the present invention;
fig. 5 is a sectional view of a limiting box structure of a fire pump mechanical emergency starting device with a moisture-proof function provided by the invention.
In the figure: 1. a fire pump wall plate; 2. a ventilation slot; 3. a guide bar; 4. a limiting box; 5. a humidity sensor; 6. a fixed mount; 7. waterproof cloth; 8. a temperature sensor; 9. a slide bar; 10. a fixing ring; 11. a limiting block; 12. a limiting groove; 13. a wire rope; 14. a power box; 15. a first stop switch; 16. a power cavity; 17. rope grooves; 18. a power motor; 19. a winch; 20. a rubber rod; 21. a spring; 22. a movable block; 23. extruding a groove; 24. a pressing plate; 25. a winding motor; 26. pulling a rope; 27. a second stop switch.
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.
Referring to fig. 1-5, an emergency starting device of a fire pump machine with a moisture-proof function comprises a fire pump wallboard 1, wherein a ventilation groove 2 is formed in the surface of the fire pump wallboard 1, an automatic device is mounted on the surface of the fire pump wallboard 1, the surface of the ventilation groove 2 is automatically covered and opened through the automatic device according to the humidity and the temperature in a fire pump, the automatic device comprises guide rods 3, supporting devices are mounted on opposite sides of the two guide rods 3, and each supporting device comprises a limiting box 4;
furthermore, a humidity sensor 5 is mounted on the surface of the fire pump wall plate 1, the two guide rods 3 are respectively located on two sides of the ventilation groove 2, a fixing frame 6 is fixedly connected to the lower surface of each guide rod 3, a waterproof cloth 7 is mounted on the surface of the fixing frame 6, a temperature sensor 8 is mounted on the surface of the waterproof cloth 7, and the width of the waterproof cloth 7 is matched with and aligned with the width of the ventilation groove 2;
furthermore, the upper end of the waterproof cloth 7 is fixedly connected with a sliding rod 9, two ends of the sliding rod 9 are fixedly sleeved with fixing rings 10, the outer side wall of each fixing ring 10 is fixedly connected with a limiting block 11, the front end surface of the guide rod 3 is provided with a limiting groove 12, and the inner wall of each limiting groove 12 is matched with the surface of the limiting block 11;
furthermore, the inner wall of the limiting groove 12 is connected with the surface of the limiting block 11 in a sliding manner, the upper end surface of the limiting block 11 is fixedly connected with a steel wire rope 13, and the upper surface of the guide rod 3 is fixedly connected with a power box 14;
further, a first stop switch 15 is mounted on the surface of the front end of the power box 14, power cavities 16 are formed in the inner walls of the two ends of the power box 14, rope grooves 17 are formed in the lower surface of the power box 14 and the upper surface of the guide rod 3, and the rope grooves 17 are communicated with the power cavities 16 and the limiting grooves 12;
further, the inner side wall of the rope groove 17 is connected with the steel wire rope 13 in a sliding mode, the inner wall of the power cavity 16 is provided with a power motor 18, the power motor 18 is electrically connected with the first stop switch 15 and the humidity sensor 5, an output shaft of the power motor 18 is provided with a winch 19, and the winch 19 is located right above the rope groove 17;
further, the surface of the winch 19 is fixedly connected with the tail end of the steel wire rope 13, two ends of the sliding rod 9 are fixedly connected with rubber rods 20, and the surface of each rubber rod 20 is sleeved with a spring 21;
further, the tail end of the rubber rod 20 is fixedly connected with a movable block 22, the two movable blocks 22 are respectively aligned with the two limiting boxes 4, the front end surfaces of the limiting boxes 4 are provided with extrusion grooves 23, and the front end surfaces of the limiting boxes 4 are hinged with extrusion plates 24;
further, a winding motor 25 is mounted on the inner wall of the extrusion groove 23, a pull rope 26 is mounted on the surface of an output shaft of the winding motor 25, and the tail end of the pull rope 26 is fixedly connected with the surface of the rear end of the extrusion plate 24;
further, a second stop switch 27 is installed on the inner bottom wall of the front end of the squeezing groove 23, and the winding motor 25 is electrically connected with the temperature sensor 8 and the second stop switch 27.
Through setting up the surface mounting automatics at fire pump wallboard 1, utilize among the automatics motor 18 to be triggered by humidity transducer 5 under high humidity environment, power motor 18 drives down along slide bar 9 ascending lifting, and then shelters from ventilation groove 2 through tarpaulin 7, reduce in the fire pump with external circulation of air for in the unable fire pump machinery emergency starting device that gets into of external moisture, thereby make to have and be convenient for the dampproofing characteristics of fire pump machinery emergency starting device.
Through setting up the both sides installation strutting arrangement at guide arm 3, when two movable blocks 22 to slide bar 9 through strutting arrangement support, utilize the coiling motor 25 in the strutting arrangement to be triggered by temperature sensor 8 under high temperature environment, coiling motor 25 and then drive the stripper plate 24 through stay cord 26 when upwards deflecting, upwards extrude surperficial movable block 22, slide bar 9 descends with tarpaulin 7 under the effect of gravity, ventilation duct 2 exposes, the inside and outside circulation of air of fire pump, and then fall the temperature in the fire pump, thereby make and have the characteristics of being convenient for cool down the protection in the emergent starting drive of fire pump machinery.
The working principle is as follows:
the automatic device and the supporting device are installed on two sides of a ventilation groove 2 on the surface of a fire pump wall plate 1, waterproof cloth 7 is accumulated at the lower end of the fire pump wall plate 1 under the action of gravity, when a large amount of outside moisture enters a fire pump mechanical emergency starting device, a humidity sensor 5 is triggered, a power motor 18 drives a winch 19 to be started, the winch 19 winds a steel wire rope 13, the steel wire rope 13 pulls a sliding rod 9 through a limiting block 11, the sliding rod 9 drives the waterproof cloth 7 to be lifted to cover the ventilation groove 2, a movable block 22 upwards extrudes the surface of an extrusion plate 24 and continuously upwards lifts, when the sliding rod 9 presses a first stop switch 15, the power motor 18 stops, the sliding rod 9 descends under the action of gravity, the movable block 22 falls on the surface of the extrusion plate 24 and is supported by the extrusion plate 24, and the sliding rod;
when the temperature rose in the fire pump machinery emergency starting device, temperature sensor 8 was triggered, winding motor 25 upwards deflected through 26 pulling stripper plates of stay cord 24, stripper plates 24 extrudes movable block 22, movable block 22 loses to support and falls with slide bar 9 and waterproof cloth 7 together under the effect of gravity, ventilation groove 2 exposes, stripper plates 24 deflects and presses second stop switch 27, second stop switch 27 control winding motor 25 stops, stripper plates 24 drive stay cord 26 under the effect of gravity and lean out.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The utility model provides a fire pump machinery emergency starting device with moisture proof function, includes fire pump wallboard (1), its characterized in that: ventilation groove (2) have been seted up on the surface of fire pump wallboard (1), the surface mounting of fire pump wallboard (1) has automatic device, through automatic device covers and opens ventilation groove (2) surface automatically according to humidity and temperature in the fire pump, automatic device includes guide arm (3), two strutting arrangement is all installed to the looks dorsal part of guide arm (3), strutting arrangement includes spacing box (4).
2. A fire pump mechanical emergency starting device with moisture-proof function as claimed in claim 1, wherein: the surface mounting of fire pump wallboard (1) has humidity transducer (5), two guide arm (3) are located the both sides of ventilation groove (2) respectively, the lower fixed surface of guide arm (3) is connected with mount (6), the surface mounting of mount (6) has tarpaulin (7), the surface mounting of tarpaulin (7) has temperature sensor (8), the width of tarpaulin (7) and the width adaptation of ventilation groove (2) and align.
3. A fire pump mechanical emergency starting device with moisture-proof function as claimed in claim 2, wherein: the upper end fixed connection of tarpaulin (7) has slide bar (9), the fixed cover in both ends of slide bar (9) has connect solid fixed ring (10), the lateral wall fixedly connected with stopper (11) of solid fixed ring (10), spacing groove (12) have been seted up on the front end surface of guide arm (3), the inner wall of spacing groove (12) and the surface adaptation of stopper (11).
4. A fire pump mechanical emergency starting device with moisture-proof function as claimed in claim 3, wherein: the inner wall of the limiting groove (12) is connected with the surface of the limiting block (11) in a sliding mode, a steel wire rope (13) is fixedly connected to the upper end surface of the limiting block (11), and a power box (14) is fixedly connected to the upper surface of the guide rod (3).
5. A fire pump mechanical emergency starting device with moisture-proof function as claimed in claim 4, wherein: the power box is characterized in that a first stop switch (15) is installed on the surface of the front end of the power box (14), power cavities (16) are formed in the inner walls of the two ends of the power box (14), rope grooves (17) are formed in the lower surface of the power box (14) and the upper surface of the guide rod (3), and the rope grooves (17) are communicated with the power cavities (16) and the limiting grooves (12).
6. A fire pump mechanical emergency starting device with moisture-proof function as claimed in claim 5, wherein: the inside wall and wire rope (13) sliding connection of grooving (17), power motor (18) are installed to the inner wall in power chamber (16), power motor (18) and the equal electric connection of first stop switch (15) and humidity transducer (5), capstan winch (19) are installed to the output shaft of power motor (18), capstan winch (19) are located grooving (17) directly over.
7. A fire pump mechanical emergency starting device with moisture-proof function as claimed in claim 6, wherein: the surface of the winch (19) is fixedly connected with the tail end of a steel wire rope (13), two ends of the sliding rod (9) are fixedly connected with rubber rods (20), and the surface of each rubber rod (20) is sleeved with a spring (21).
8. A fire pump mechanical emergency starting device with moisture-proof function as claimed in claim 7, wherein: the terminal fixedly connected with movable block (22) of rubber pole (20), two movable block (22) align with two spacing boxes (4) respectively, extrusion groove (23) have been seted up on the front end surface of spacing box (4), the front end surface of spacing box (4) articulates there is stripper plate (24).
9. A fire pump mechanical emergency starting device with moisture-proof function as claimed in claim 8, wherein: a winding motor (25) is installed on the inner wall of the extrusion groove (23), a pull rope (26) is installed on the surface of an output shaft of the winding motor (25), and the tail end of the pull rope (26) is fixedly connected with the surface of the rear end of the extrusion plate (24).
10. A fire pump mechanical emergency starting device with moisture protection according to claim 9, characterized in that: second stop switch (27) are installed to the front end inner bottom wall in extrusion groove (23), rolling motor (25) and temperature sensor (8) and second stop switch (27) electric connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110067198.5A CN112901439A (en) | 2021-01-19 | 2021-01-19 | Fire pump machinery emergency starting device with moisture-proof function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110067198.5A CN112901439A (en) | 2021-01-19 | 2021-01-19 | Fire pump machinery emergency starting device with moisture-proof function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112901439A true CN112901439A (en) | 2021-06-04 |
Family
ID=76115229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110067198.5A Pending CN112901439A (en) | 2021-01-19 | 2021-01-19 | Fire pump machinery emergency starting device with moisture-proof function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112901439A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070013004A1 (en) * | 2005-07-14 | 2007-01-18 | Payne Fred V | Tarp loading structure and method for using same |
| CN206834580U (en) * | 2017-07-05 | 2018-01-02 | 国网河南省电力公司南召县供电公司 | A kind of intelligent cooling, the waterproof power distribution cabinet except wet bands illumination |
| CN208738639U (en) * | 2018-09-06 | 2019-04-12 | 厦门斯玛特工贸有限公司 | Distribution cabinet body with water-proof function |
| CN210686345U (en) * | 2019-10-30 | 2020-06-05 | 扬州安普利电力设备有限公司 | Electric control device of fire pump |
| CN210867271U (en) * | 2019-10-31 | 2020-06-26 | 宁波恒升电气有限公司 | Fire pump, dual supply automatic control equipment |
| CN212011743U (en) * | 2020-06-22 | 2020-11-24 | 浙江瓦度电气有限公司 | Intelligent waterproof ring main unit |
-
2021
- 2021-01-19 CN CN202110067198.5A patent/CN112901439A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070013004A1 (en) * | 2005-07-14 | 2007-01-18 | Payne Fred V | Tarp loading structure and method for using same |
| CN206834580U (en) * | 2017-07-05 | 2018-01-02 | 国网河南省电力公司南召县供电公司 | A kind of intelligent cooling, the waterproof power distribution cabinet except wet bands illumination |
| CN208738639U (en) * | 2018-09-06 | 2019-04-12 | 厦门斯玛特工贸有限公司 | Distribution cabinet body with water-proof function |
| CN210686345U (en) * | 2019-10-30 | 2020-06-05 | 扬州安普利电力设备有限公司 | Electric control device of fire pump |
| CN210867271U (en) * | 2019-10-31 | 2020-06-26 | 宁波恒升电气有限公司 | Fire pump, dual supply automatic control equipment |
| CN212011743U (en) * | 2020-06-22 | 2020-11-24 | 浙江瓦度电气有限公司 | Intelligent waterproof ring main unit |
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Application publication date: 20210604 |