CN216977059U - Ventilation system of frequency converter chamber - Google Patents
Ventilation system of frequency converter chamber Download PDFInfo
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- CN216977059U CN216977059U CN202220611664.1U CN202220611664U CN216977059U CN 216977059 U CN216977059 U CN 216977059U CN 202220611664 U CN202220611664 U CN 202220611664U CN 216977059 U CN216977059 U CN 216977059U
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- 238000009423 ventilation Methods 0.000 title claims abstract description 39
- 230000017525 heat dissipation Effects 0.000 claims abstract description 29
- 238000005057 refrigeration Methods 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000009970 fire resistant effect Effects 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 14
- 238000001914 filtration Methods 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Abstract
The utility model discloses a ventilation system of a frequency converter room, which comprises: the frequency converter chamber is used for installing heat dissipation equipment, an air inlet and a mechanical air outlet are formed in the frequency converter chamber, and a mechanical exhaust fan is arranged at the mechanical air outlet; the frequency converter chamber is internally provided with refrigeration equipment and an air duct assembly communicated with an air outlet of the heat dissipation equipment, one end of the air duct assembly is communicated with the heat dissipation equipment, and the other end of the air duct assembly is led out of the frequency converter chamber and connected to the outside of the frequency converter chamber; the frequency converter chamber ventilation system also comprises a temperature control device electrically connected with the refrigeration equipment and the mechanical exhaust fan. The application provides a converter room ventilation system can solve the indoor temperature problem of converter room better to can reduce the refrigeration plant power consumption.
Description
Technical Field
The utility model relates to the technical field of frequency converters, in particular to a ventilation system of a frequency converter chamber.
Background
With the development of energy-saving technology, frequency converters are applied more and more. The frequency converter consists of a bypass cabinet, a transformer cabinet, a power cabinet and a control cabinet. The working efficiency of the frequency converter is generally 96-98%, when the frequency converter works at full load, the heat dissipation capacity is generally 2-4% of the rated power, and the maximum heat dissipation capacity is 4% of the rated power. Generally, the indoor environment temperature of the frequency converter is required to be 5-35 ℃, the relative humidity is required to be 5-85%, and the indoor cleanness is kept.
In medium and small-sized power generation, equipment motors such as a feed pump, a boiler blower, a boiler induced draft fan and the like generally adopt variable frequency regulation, and the total heat dissipation capacity reaches about 350 kW. The heat dissipation demand is great, needs to set up ventilation system and ventilates.
There are several ways to ventilate the room of the prior art frequency converter:
1. natural air intake and mechanical air exhaust (the cabinet body exhaust is directly led to the outdoor);
2. mechanical air intake and mechanical air exhaust (the cabinet exhaust is directly led to the outdoor);
3. cooling measures (such as industrial air conditioning, air-water cooling mode and the like).
As shown in fig. 1, mode 1: the frequency converter chamber adopts natural air intake and mechanical air exhaust (the cabinet body exhaust is directly led to the outdoor). This converter room ventilation system includes: fireproof air inlet shutter 1, exhaust duct 2, filter screen 3 and exhaust fan 4. External natural wind enters the frequency converter chamber through the fireproof air inlet shutter 1, and then is discharged from the filter screen 3 through the exhaust pipeline 2 under the suction action of the exhaust fan 4 after heat exchange.
As shown in fig. 2, mode 2: the heat is discharged in the modes of mechanical air inlet and mechanical air exhaust (the cabinet body air exhaust is directly led to the outdoor). This converter room ventilation system includes: a blower 5, an exhaust duct 2, a filter screen 3 and an exhaust fan 4. Outside air is sucked into the frequency converter chamber through the air feeder 5, and then air flow after heat exchange is discharged from the filter screen 3 through the exhaust pipeline 2 under the suction action of the exhaust fan 4.
In the mode 1 and the mode 2, the air hood is arranged at the upper part of the frequency converter cabinet body to form the air exhaust pipeline 2, so that heat is exhausted outdoors, but not all heat can be exhausted, and part of residual heat of equipment and heat of the enclosure structure are accumulated indoors; the high-voltage tripping of the frequency converter caused by the overhigh indoor temperature can not meet the standard requirement on the premise of realizing the self-protection of power failure and stopping production. Furthermore, there may also be: because some factory areas have severe environment, the problem that the air inlet is not smooth due to the fact that filter cotton is arranged at the air inlet in a filtering mode and is not cleaned regularly, and a negative pressure door is not easy to open indoors is solved.
As shown in fig. 3, mode 3: the frequency converter chamber adopts a fully-closed cooling measure (such as an industrial air conditioner 6, an air-water cooling mode and the like) to reduce the temperature.
Because the mode 3 adopts a year-round closed cooling air conditioning mode, all heat needs to be replaced to the external environment by refrigeration equipment for heat dissipation of operating equipment, and the investment and the energy consumption are large. Taking 80MW power generation as an example, 6 industrial air conditioners 6 with 25 pieces are needed to be configured to solve the problem of no over-temperature through conversion, closed cooling is adopted all the year round, power consumption is large, and investment cost is increased.
To this end, there is a need for a ventilation system for a frequency converter room that solves at least one of the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
In view of the defects in the prior art, the embodiment of the utility model provides a ventilation system for a frequency converter room, which better solves the problem of the indoor temperature of the frequency converter room and reduces the power consumption of refrigeration equipment.
In addition, the frequency converter room ventilation system provided by the embodiment of the utility model can further solve the problem of equipment failure and the problem of negative pressure.
The specific technical scheme of the embodiment of the utility model is as follows:
a frequency converter compartment ventilation system, comprising: the frequency converter chamber is used for installing heat dissipation equipment, an air inlet and a mechanical air outlet are formed in the frequency converter chamber, and a mechanical exhaust fan is arranged at the mechanical air outlet; the frequency converter chamber is internally provided with refrigeration equipment and an air duct assembly communicated with an air outlet of the heat dissipation equipment, one end of the air duct assembly is communicated with the heat dissipation equipment, and the other end of the air duct assembly is led out of the frequency converter chamber and connected to the outside of the frequency converter chamber; the frequency converter chamber ventilation system also comprises a temperature control device electrically connected with the refrigeration equipment and the mechanical exhaust fan.
In a preferred embodiment, the air duct assembly includes: exhaust pipe and setting are in trip valve and regulation sliding door in the exhaust pipe, at least the trip valve with the temperature control device electricity is connected.
In a preferred embodiment, converter room ventilation system still include with the temperature sensor that the temperature control device electricity is connected, works as converter room temperature is higher than when the required ambient temperature of cooling apparatus, temperature control device makes mechanical exhaust fan is in the shutdown state, and mechanical air outlet is in the closed condition, the trip valve is in the closed condition, adjust the sliding door and be in the open mode, refrigeration plant is in refrigeration operating condition.
In a preferred embodiment, the ventilation system of the frequency converter room further comprises a temperature sensor electrically connected with the temperature control device, when the temperature in the frequency converter room is not higher than the ambient temperature required by the heat dissipation equipment, the temperature control device makes the mechanical exhaust fan be in a working state, the mechanical air outlet be in an open state, the stop valve be in an open state, the adjusting sliding door be in a closed state, and the refrigeration equipment be in a shutdown state.
In a preferred embodiment, the sliding door includes: the valve comprises a valve frame, a valve plate arranged on the valve frame and a handle connected with the valve plate.
In a preferred embodiment, the sliding door further comprises a driving motor electrically connected with the temperature control device, and the driving motor can drive the handle to move.
In a preferred embodiment, a sealing member is further provided at a position where the valve plate is engaged with the valve frame.
In a preferred embodiment, the air inlet arranged on the frequency converter chamber is a fireproof air inlet shutter.
In a preferred embodiment, the fireproof air inlet shutter is provided with a filtering mechanism.
In a preferred embodiment, the end of the exhaust air duct protrudes out of the frequency converter chamber, and the end of the exhaust air duct is provided with a filter element.
The technical scheme of the utility model has the following remarkable beneficial effects:
the normal safe operation of converter can be guaranteed to the converter room ventilation system that provides in this application embodiment, and this converter room ventilation system combines the design with wind channel subassembly and refrigeration plant (air conditioner) cooling, and the start wind channel subassembly or refrigeration plant according to external environment temperature and converter indoor temperature difference and selectivity carry out work, and the good reliability can not only reduce teenagers' average air conditioner power consumption, but also can reduce equipment fault rate (equipment cold and hot balance, extension components and parts life).
In addition, because steel mill environment is relatively poor, the air inlet filter pulp is easy to block, if the irregular cleaning can lead to indoor negative pressure, the door is not easy to open. The air duct assembly provided by the utility model is provided with the adjusting sliding door, and the air exhaust pressure can be reduced by using the adjusting sliding door, so that the problem of indoor negative pressure is effectively solved, the production process requirement is met, and the working environment of operators is improved.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the utility model may be employed. It should be understood that the embodiments of the utility model are not so limited in scope. The embodiments of the utility model include many variations, modifications and equivalents within the spirit and scope of the appended claims. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the utility model as a matter of case.
FIG. 1 is a schematic view of a first prior art transducer room ventilation system;
FIG. 2 is a schematic view of a second prior art transducer room ventilation system;
FIG. 3 is a schematic view of a third prior art transducer room ventilation system;
FIG. 4 is a schematic structural view of a ventilation system of a frequency converter room according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural view of a damper door of a ventilation system of a frequency converter room according to an embodiment of the present disclosure;
fig. 6 is a layout view of a ventilation system of a frequency converter room according to an embodiment of the present application.
Reference numerals of the prior art:
1. a fireproof air intake shutter;
2. an exhaust duct;
3. filtering with a screen;
4. an exhaust fan;
5. a blower;
6. an air conditioner;
reference numbers of the present application:
11. a fireproof air intake shutter;
12. a mechanical exhaust fan;
13. an exhaust duct; 131. a filter screen;
14. a shut-off valve;
15. adjusting the sliding door;
16. a temperature control device;
17. an air conditioner;
8. a heat dissipating device;
151. a valve frame; 152. a valve plate; 153. a seal member; 154. a handle.
Detailed Description
The technical solutions of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments, it should be understood that these embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention, and various equivalent modifications of the present invention by those skilled in the art after reading the present invention fall within the scope of the appended claims.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 4 to 6 in combination, in the present specification, an embodiment of the present application provides a ventilation system for a frequency converter room, which may include: the frequency converter chamber is used for installing the heat dissipation equipment 8, an air inlet and a mechanical air outlet are formed in the frequency converter chamber, and a mechanical exhaust fan 12 is arranged at the mechanical air outlet; a refrigerating device and an air duct assembly communicated with an air outlet of the heat dissipation device 8 are arranged in the frequency converter chamber, one end of the air duct assembly is communicated with the heat dissipation device 8, and the other end of the air duct assembly is led out of the frequency converter chamber and connected to the outside of the frequency converter chamber; the ventilation system of the frequency converter chamber also comprises a temperature control device 16 which is electrically connected with the refrigeration equipment and the mechanical exhaust fan 12.
The normal safe operation of converter can be guaranteed to the converter room ventilation system that provides in this application embodiment, and this converter room ventilation system combines the design with wind channel subassembly and refrigeration plant (for example, air conditioner 17) cooling, and according to external environment temperature and the different and selective start wind channel subassembly of converter indoor temperature or refrigeration plant work, and the good reliability can not only reduce the average air conditioner 17 power consumption of teenagers, but also can reduce equipment fault rate (equipment cold and hot balance, extension components and parts life).
The present application will be described in detail below with reference to specific drawings and embodiments.
Wherein the air duct assembly may include: exhaust pipe 13 and set up trip valve 14 and regulation sliding door 15 in exhaust pipe 13, at least trip valve 14 with temperature control device 16 electricity is connected.
Because the air inlet filter cotton in the poor environment of a steel mill is easy to block, the irregular cleaning leads to indoor negative pressure, and a door is not easy to open. The air duct assembly provided by the utility model is provided with the adjusting sliding door 15, and the air exhaust pressure can be reduced by using the adjusting sliding door 15, so that the problem of indoor negative pressure is effectively solved, the production process requirement is met, and the working environment of operators is improved.
When the external temperature of the enclosed space is higher than the environmental temperature required by the heat dissipation device 8, the mechanical air outlet of the enclosed space is closed, the stop valve 14 of the exhaust duct 13 (air duct for short) is closed, the adjusting sliding door 15 is opened, and the cooling air of the heat dissipation device 8 forms a closed circulation in the enclosed space. Wind enters from the inlet of the heat dissipation device 8, carries heat and is exhausted into the air channel from the outlet through the exhaust fan, and is exhausted to the closed space at the position of the adjusting sliding door 15. The hot air is discharged from the closed space by the refrigeration equipment.
When the external temperature of the closed space is lower than the environmental temperature required by the heat dissipation equipment 8, the air outlet of the closed space is opened, and the air outlet and the air inlet of the closed space form a primary air heat dissipation system; the air is exhausted from the air inlet, the exhaust fan and the air outlet of the heat dissipation device 8 through the air duct and the opened cut-off valve 14 to the outside of the closed space, and a double-line open cycle is formed.
In one embodiment, the ventilation system of the frequency converter room further comprises a temperature sensor electrically connected with the temperature control device 16, when the temperature in the frequency converter room is higher than the ambient temperature required by the heat dissipation device 8, the temperature control device 16 makes the mechanical exhaust fan 12 in a shutdown state, the mechanical air outlet in a shutdown state, the cut-off valve 14 in a shutdown state, the adjusting sliding door 15 in an open state, and the refrigeration device in a refrigeration working state.
When the indoor temperature of frequency converter is not higher than during the ambient temperature that radiator 8 required, temperature control device 16 makes mechanical exhaust fan 12 is in operating condition, mechanical air outlet is in the open mode, trip valve 14 is in the open mode, adjust sliding door 15 and be in the closed mode, refrigeration plant is in the shut down state.
The frequency converter has large integral heat dissipating capacity and high environmental requirement, and a specific scene is taken as an example, in order to ensure that the indoor temperature of the equipment is not higher than 35 ℃ in summer and not lower than 5 ℃ in winter in safe operation, a year-round closed cooling air conditioning mode or cabinet exhaust air is generally adopted to be directly led outdoors in the prior art. The closed cooling is adopted all year round, and the power consumption is large; the design of an exhaust pipeline 13 is adopted, and the air inlet is filtered and provided with filter cotton for irregular cleaning, so that negative pressure is formed in a room with unsmooth air inlet.
The utility model provides a converter room ventilation system, the optimal design adopts totally closed cooling air conditioning mode and the cabinet body to air exhaust and directly leads to outdoor combination design on original basis, and trip valve 14 and regulation sliding door 15 are add to the heat dissipation wind channel. In summer, a totally-enclosed cooling air conditioning device is adopted, a stop valve 14 and an air inlet are closed, an adjusting sliding door 15 is opened, the heat dissipation capacity of equipment is discharged indoors, and the temperature is adjusted through an industrial air conditioner 17 to meet the requirement that the indoor temperature is not higher than 35 ℃; in other seasons, the exhaust air of the cabinet body is directly exhausted outdoors, the cut-off valve 14 and the air inlet are opened, and the adjusting sliding door 15 is closed.
Referring to fig. 5, in the present embodiment, the sliding door 15 includes: a valve frame 151, a valve plate 152 provided on the valve frame 151, and a handle 154 connected to the valve plate 152. The valve plate 152 is driven by the push-pull handle 154 to move along the horizontal direction, so that the adjusting sliding door 15 is opened, and the valve plate 152 can be pushed reversely by the push-pull handle 154, so that the adjusting sliding door 15 is closed.
Further, the sliding door 15 may further include a driving motor electrically connected to the temperature control device 16, and the driving motor can drive the handle 154 to move. When the adjusting sliding door 15 is provided with a driving motor electrically connected with the temperature control device 16, the adjusting sliding door 15 can be automatically opened or closed by the push-pull handle 154 under the control of the temperature control device 16 based on the current outdoor environment temperature and the current internal environment temperature of the frequency converter. Further, the opening degree of the sliding door 15 may be adjusted according to the air pressure of the closed space. When the air pressure in the closed space is negative pressure, the adjusting sliding door 15 is opened. And adjusting the opening degree of the sliding door 15 from 0-100%.
Further, a sealing member 153 is disposed at a position where the valve plate 152 is engaged with the door frame. The sealing member 153 may be made of rubber. Specifically, the sealing member 153 may be provided on a sealing surface of the seal-adjusting sliding door 15.
Wherein, the air inlet that sets up on the converter room is fire prevention air inlet shutter 11. The fireproof air intake louver 11 has a fireproof function. Furthermore, a filtering mechanism is arranged on the fireproof air inlet shutter 11. The filtering mechanism is mainly used for filtering pollutants in the external environment and preventing excessive pollutants from entering a frequency converter chamber, in particular an air duct assembly.
In addition, the end of exhaust duct 13 stretches out the converter room, the end of exhaust duct 13 is provided with filtering piece. The end of the exhaust duct 13 may be provided with a filter, specifically, the filter may be a filter screen 131, and the filter screen 131 is mainly used to isolate large particulate pollutants in the external environment, so as to prevent the pollutants from entering the air duct assembly through the end of the exhaust duct 13.
It should be noted that, in the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is intended or should be construed to indicate or imply relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.
The above embodiments in the present specification are all described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment is described with emphasis on being different from the other embodiments.
The above embodiments are only a few embodiments of the present invention, and the embodiments of the present invention are described above, but the present invention is only used for the understanding of the present invention, and is not limited to the embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. A frequency converter compartment ventilation system, comprising: the frequency converter chamber is used for installing heat dissipation equipment, an air inlet and a mechanical air outlet are formed in the frequency converter chamber, and a mechanical exhaust fan is arranged at the mechanical air outlet;
the frequency converter chamber is internally provided with refrigeration equipment and an air duct assembly communicated with an air outlet of the heat dissipation equipment, one end of the air duct assembly is communicated with the heat dissipation equipment, and the other end of the air duct assembly is led out of the frequency converter chamber and connected to the outside of the frequency converter chamber;
the frequency converter chamber ventilation system also comprises a temperature control device electrically connected with the refrigeration equipment and the mechanical exhaust fan.
2. The inverter compartment ventilation system of claim 1, wherein the duct assembly comprises: exhaust pipe and setting are in trip valve and regulation sliding door in the exhaust pipe, at least the trip valve with the temperature control device electricity is connected.
3. The ventilation system for inverter room of claim 2, further comprising a temperature sensor electrically connected to the temperature control device, wherein when the temperature in the inverter room is higher than the ambient temperature required by the heat dissipation apparatus, the temperature control device causes the mechanical exhaust fan to be in a shutdown state, the mechanical air outlet to be in a closed state, the cut-off valve to be in a closed state, the adjustment sliding door to be in an open state, and the refrigeration apparatus to be in a refrigeration working state.
4. The ventilation system for inverter room of claim 2, further comprising a temperature sensor electrically connected to the temperature control device, wherein when the temperature in the inverter room is not higher than the ambient temperature required by the heat dissipation apparatus, the temperature control device makes the mechanical exhaust fan in a working state, the mechanical air outlet in an open state, the cut-off valve in an open state, the adjustment sliding door in a closed state, and the refrigeration apparatus in a shutdown state.
5. The inverter-room ventilating system as set forth in claim 3 or 4, wherein the sliding-adjustment door comprises: the valve comprises a valve frame, a valve plate arranged on the valve frame and a handle connected with the valve plate.
6. The inverter compartment ventilation system of claim 5, wherein the sliding door further comprises a drive motor electrically connected to the temperature control device, the drive motor being capable of moving the handle.
7. The inverter compartment ventilating system as set forth in claim 5, wherein a sealing member is further provided at a position where said valve plate is engaged with said valve frame.
8. The transducer room ventilation system of claim 1, wherein the air inlet provided in the transducer room is a fireproof air inlet louver.
9. The inverter compartment ventilation system of claim 8 wherein the fire resistant intake louver is provided with a filter mechanism.
10. The inverter compartment ventilation system of claim 2, wherein a distal end of the exhaust duct extends out of the inverter compartment, and a distal end of the exhaust duct is provided with a filter member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220611664.1U CN216977059U (en) | 2022-03-21 | 2022-03-21 | Ventilation system of frequency converter chamber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220611664.1U CN216977059U (en) | 2022-03-21 | 2022-03-21 | Ventilation system of frequency converter chamber |
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| Publication Number | Publication Date |
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| CN216977059U true CN216977059U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220611664.1U Active CN216977059U (en) | 2022-03-21 | 2022-03-21 | Ventilation system of frequency converter chamber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115955815A (en) * | 2022-12-10 | 2023-04-11 | 中冶焦耐(大连)工程技术有限公司 | Automatic air regulating system of frequency converter room |
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2022
- 2022-03-21 CN CN202220611664.1U patent/CN216977059U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115955815A (en) * | 2022-12-10 | 2023-04-11 | 中冶焦耐(大连)工程技术有限公司 | Automatic air regulating system of frequency converter room |
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