CN220776377U - Fan redundancy structure for frequency converter with online maintenance function - Google Patents
Fan redundancy structure for frequency converter with online maintenance function Download PDFInfo
- Publication number
- CN220776377U CN220776377U CN202322475963.4U CN202322475963U CN220776377U CN 220776377 U CN220776377 U CN 220776377U CN 202322475963 U CN202322475963 U CN 202322475963U CN 220776377 U CN220776377 U CN 220776377U
- Authority
- CN
- China
- Prior art keywords
- fan
- frequency converter
- fans
- maintenance function
- online maintenance
- 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.)
- Active
Links
- 238000012423 maintenance Methods 0.000 title claims abstract description 19
- 230000017525 heat dissipation Effects 0.000 claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000011324 bead Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model relates to a fan redundant structure for a frequency converter with an online maintenance function, which comprises a plurality of fans arranged at a ventilation air duct opening of a frequency converter cabinet, wherein the fans are identical in structure, are respectively arranged in corresponding fan frames, are provided with check valves, quick connectors and switches at outlets of the fan frames in one-to-one correspondence, and are provided with wind shields with matched sizes at the bottoms of the fan frames. The independent and redundant design among the fans can still meet the heat dissipation requirement under the full-power operation working condition of the frequency converter after any fan fails, the failed fan breaks the corresponding switch and inserts the wind shield into the bottom of the fan frame, the fan can be maintained and replaced on line under the condition that the frequency converter is not stopped after the ventilation air duct opening of the frequency converter cabinet is cut off, and the fan redundancy and on-line replacement functions of the frequency converter are realized.
Description
Technical Field
The utility model relates to power control corollary equipment, in particular to a fan redundancy structure for a frequency converter with an on-line maintenance function.
Background
In large-scale production in the mechanical industry, some production processes require continuous operation, not allowing for a mid-stop of the plant operation, such as large electric drive equipment in the petrochemical and metallurgical industries, etc. If any one of the devices in the process flow fails, a huge economic loss is caused, and even safety accidents can occur. Therefore, the production equipment must have very high reliability, with average downtime requirements greater than tens of thousands of hours. The power control device is basically adopted in mass production, wherein the frequency converter uses a power electronic element as a core component, the motor device is driven to work through the conversion of the power electronic element, heat generated in the conversion process of the power electronic element is radiated through the radiating fan, if the radiating fan breaks down, the temperature of the core power electronic element of the frequency converter can be quickly increased, and finally, the frequency converter stops due to the fault, so that the industrial mass production is seriously affected. Therefore, the improvement of the reliability of the heat radiation fan for the frequency converter is an important precondition for ensuring the stable operation of the frequency converter.
In the prior art, the design scheme of the frequency converter cooling fan is that the frequency converter adopts the following schemes to process when the fan fails:
1. after a delay of a few seconds, reporting a fault to stop;
2. reducing the heating value of the power electronic element by adopting a de-rating operation mode;
3. the margin design of the fan is increased, and the single fan can still operate in rated full load when in fault.
Among the above-mentioned several schemes, the 1 st, 2 nd scheme can't guarantee that the converter system lasts stable operation, and the 3 rd scheme increases fan and can't realize online maintenance and the change of fan, when having many fans to break down simultaneously, can only consult the 1 st, 2 nd scheme and handle, so the running stability of converter can not obtain fine guarantee.
Disclosure of Invention
The utility model aims to overcome the problems in the prior art, and designs a fan redundancy structure for a frequency converter with an online maintenance function, which adopts redundancy for a heat dissipation fan of the frequency converter and a fan design for quick replacement under the condition that the frequency converter is not stopped, so that the heat dissipation requirement of the frequency converter under the full-power operation working condition is met, online maintenance and quick replacement can be carried out when any fan fails, and the operation reliability of a frequency conversion driving system is ensured.
The utility model is realized in the following way: possess fan redundant structure for converter of online maintenance function, its characterized in that: the fan frame is provided with n switches which are respectively controlled in a one-to-one correspondence manner, wherein n is a positive integer and n is more than or equal to 2.
The fans adopt centrifugal fans or axial flow fans, n fans are respectively connected with a power supply line through respective corresponding quick connectors, and the power supply is switched off and on through respective corresponding switches.
The n check valves arranged at the air outlet of the fan are in one-to-one correspondence with the n fans, and form front and back serial air channels with the fans respectively. The n fan frames are connected in parallel in sequence, and the other side surfaces and the top surface except the check valve are respectively sealed by the side plates and the top plate. The fans with the same n structures are separated from each other through respective side plates to form n independent air channels. The n independent air channels can be directly discharged to the outside atmosphere after being converged behind the check valve, or are connected to cooling devices such as an air-water heat exchanger by adopting a pipeline and then discharged.
The wind shield is used for being inserted into a jack at the bottom of a fan frame of a corresponding fault fan after any fan breaks down, blocking the fault fan and the ventilation air port of the heat dissipation inside the frequency converter cabinet, and preventing external air from flowing backwards into the frequency converter cabinet in the fan replacement process, so that the number of the wind shield is less than or equal to the number of n fan frames. In order to facilitate the taking and the use of the wind shield, the wind shield is provided with a bending pull handle at the edge.
The switch adopts a miniature circuit breaker or a contactor and is arranged on a control panel of the frequency converter cabinet.
The beneficial effects of the utility model are as follows: the utility model adopts the mutually independent and redundant design among all fans, after any fan fails, the fan can be replaced under the condition that the frequency converter is not stopped, the heat dissipation requirement of the frequency converter under the full-power operation condition can be met after the replacement, and the on-line maintenance and the quick on-line replacement can be timely carried out when any fan fails by matching with the corresponding switch control, the quick connector and the wind shield, so that the fan redundancy and the on-line replacement function of the frequency converter are realized, the frequency converter can normally operate without stopping in the maintenance and replacement process, and the reliability of the system is improved. In the replacement process, one fan is omitted in a short time, the frequency converter can continue to operate in a mode of short-time derating operation or short-time improvement of the temperature rise protection threshold value of the system, and one fan can be added in design, so that the air quantity can still meet the full-load operation requirement of the frequency converter in the replacement process. The utility model has simple and easily understood principle and application, low manufacturing cost, convenient updating and reconstruction of the existing equipment, lower investment and capability of ensuring continuous operation of the frequency converter driving load equipment without stopping the machine and improving the reliability and safety of the system operation.
Drawings
Fig. 1 is a schematic diagram of the installation position relationship between a fan frame and a frequency converter cabinet in the utility model.
Fig. 2 is a schematic diagram showing the internal structure of the fan frame and the mounting position relationship between the fan frame and the wind shield.
In the figure: 1. a frequency converter cabinet; 2. A fan frame; 3. a switch; 4. A blower; 5. A check valve; 6. A wind deflector; 7. a quick connector.
Detailed Description
The utility model will be further described with reference to the drawings and the specific examples.
According to the attached drawings 1 and 2, the utility model discloses a fan redundant structure for a frequency converter with an on-line maintenance function, which comprises n fans 4 arranged at a ventilation air duct opening of a frequency converter cabinet, wherein the n fans 4 have the same structure and are respectively arranged inside fan frames 2 of respective corresponding frame structures, the n fan frames 2 are sequentially connected in parallel, a check valve 5 for unidirectional air supply to an external space is respectively arranged on one side surface of an air outlet of the fan 4 facing the external space, a quick connector 7 for connecting with a power supply is respectively arranged at the bottom, the other side surfaces and the top surface are respectively closed through side plates and top plates, and the n fans 4 with the same structure are mutually separated through respective side plates to form n independent air ducts. The fan frame 2 bottom dispose the deep bead 6 that the size matches, deep bead 6 does not install on the fan at ordinary times, only use when the fan is changed to be in the bottom of fan frame 2 and converter cabinet contact surface be equipped with be used for inserting the socket of deep bead 6, n fan 4 be equipped with the n switch 3 of one-to-one difference control, switch 3 arrange on the control panel of converter cabinet, wherein n is positive integer, and n is greater than or equal to 2.
The fans 4 are centrifugal fans or axial flow fans, n fans 4 are connected with a power supply through corresponding quick connectors 7 respectively, and power supply disconnection and connection are realized through corresponding switches 3, because the number of the fans 4 is larger than or equal to 2, and the design of heat dissipation requirements of the frequency converter under the full power operation condition can be met by adopting n-1 fans to operate, or the fans can be operated under the condition of short-time de-rated operation or proper rising of the temperature of the frequency converter, after any fan breaks down, the rest fans still can meet the heat dissipation requirements of the frequency converter under the operation condition, the frequency converter can still be fully operated without stopping maintenance or repair, and after a power supply passage of the failed fan is cut off through a corresponding switch 3, the failed fan 6 is inserted into a corresponding fan frame 2 bottom socket to block the air passage port of the frequency converter cabinet, so that the fan can be prevented from being reversely flowed into the frequency converter cabinet by external air, and meanwhile, the quick connectors 7 can be quickly replaced and the fan power supply cable of the fan 4 can be quickly replaced in the fan on-line replacement process. After replacement, the system recovers the original ventilation and heat dissipation state.
Because the wind shield 6 is used for cutting off the ventilation air ports of the frequency converter cabinet when the fan fails, the number of the wind shields is less than or equal to n, and the wind shields are provided with bent pull handles at the edges for facilitating the taking and the use of the wind shields.
The n check valves 5 installed at the air outlet of the fan are in one-to-one correspondence with the n fans 4, and form front and rear serial air channels with the fans respectively, so that air backflow after fan faults is prevented. The n independent air channels can be directly discharged to the outside atmosphere after being converged behind the check valve, or are connected to cooling devices such as an air-water heat exchanger by adopting a pipeline and then discharged. The direction indicated by the arrow in fig. 2 is the direction of the gas flow in the air duct.
Typically, the switch 3 is a miniature circuit breaker or contactor.
Example 1:
according to fig. 1 and 2, in this embodiment, a plurality of fan frames 2 are installed at the top ventilation port of the frequency converter cabinet 1, and a check valve 5 and a fan 4 are correspondingly installed in each fan frame 2. Taking the leftmost 1# fan in the schematic diagram as an example, when the 1# fan is in fault and stops, the check valve 5 is automatically closed under the action of wind power of the air duct, then the switch 3 corresponding to the 1# fan is disconnected, and the power supply of the 1# fan in fault is closed, so that the protection effect is realized. Then insert 1# fan frame lower part socket that the deep bead 6 corresponds with 1# fan, block the ventilation air duct mouth of converter cabinet here, prevent that outside air from flowing backwards into in the converter cabinet 1, then open the roof of this 1# fan frame, break off quick-operation joint 7, demolish 1# fan from 1# fan frame, and install new fan in the fan frame, then connect power supply line through quick-operation joint 7, finally install the roof of 1# fan frame again, accomplish the change of fan after demolishing deep bead 6, after closing switch 3, new fan is normal recovery operation promptly.
The above embodiments are merely preferred embodiments of the present utility model, and are not intended to limit the present utility model, so that those skilled in the art may make various equivalent modifications, changes and substitutions to the embodiments according to the present disclosure, and all such equivalent modifications, changes and substitutions should be included in the scope of the present utility model. The scope of the utility model is defined by the appended claims.
Claims (7)
1. Possess fan redundant structure for converter of online maintenance function, its characterized in that: the fan frame is provided with n switches which are respectively controlled in a one-to-one correspondence manner, wherein n is a positive integer and n is more than or equal to 2.
2. The fan redundancy structure for a frequency converter with an online maintenance function according to claim 1, wherein: the fans adopt centrifugal fans or axial flow fans, n fans are respectively connected with a power supply line through respective corresponding quick connectors, and the power supply is switched off and on through respective corresponding switches.
3. The fan redundancy structure for a frequency converter having an online maintenance function according to claim 1 or 2, wherein: n fans with the same structure are separated by respective side plates to form n independent air channels, and n check valves arranged at the air outlet of the fans are in one-to-one correspondence with the n fans to form front and rear series air channels with the fans respectively.
4. The fan redundancy structure for a frequency converter with an online maintenance function according to claim 1, wherein: the wind shield blocks the fan and the ventilation air duct opening for heat dissipation in the frequency converter cabinet after being inserted into the corresponding bottom socket of the fan frame.
5. The fan redundancy structure for a frequency converter with an online maintenance function according to claim 1 or 4, wherein: the number of the wind shields is less than or equal to n, and the wind shields are provided with drawing handles at the edges, which are convenient to take and use.
6. The fan redundancy structure for a frequency converter with an online maintenance function according to claim 1, wherein: the switch adopts a miniature circuit breaker or a contactor and is arranged on a control panel of the frequency converter cabinet.
7. The fan redundancy structure for a frequency converter with an online maintenance function according to claim 1, wherein: the n fan frames are connected in parallel in sequence, and the other side surfaces and the top surface except the check valve are respectively sealed by the side plates and the top plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322475963.4U CN220776377U (en) | 2023-09-12 | 2023-09-12 | Fan redundancy structure for frequency converter with online maintenance function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322475963.4U CN220776377U (en) | 2023-09-12 | 2023-09-12 | Fan redundancy structure for frequency converter with online maintenance function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220776377U true CN220776377U (en) | 2024-04-12 |
Family
ID=90617702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322475963.4U Active CN220776377U (en) | 2023-09-12 | 2023-09-12 | Fan redundancy structure for frequency converter with online maintenance function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220776377U (en) |
-
2023
- 2023-09-12 CN CN202322475963.4U patent/CN220776377U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220776377U (en) | Fan redundancy structure for frequency converter with online maintenance function | |
| CN201541062U (en) | Outdoor power supply cabinet | |
| CN204651972U (en) | A kind of ventilation and heat structure of outdoor direct charger | |
| CN2666027Y (en) | High-pressure large power frequency converter with double heat radiation fans system | |
| CN206922312U (en) | A kind of modularization armoured fixing metal closing switch device | |
| KR20200126249A (en) | Fuel cell system and method for exchanging stack module of fuel cell system | |
| CN211017945U (en) | 10KV heavy current switch cabinet | |
| CN2793632Y (en) | Vent flow guider of controlling cabinet air conditioner | |
| CN208548276U (en) | A kind of switch easy to repair | |
| CN207410212U (en) | A kind of rectification module integrates and reuses system | |
| CN201556071U (en) | Intelligent control circuit of water-cooling system of gas transformer | |
| CN215679149U (en) | Intelligent temperature control system for heat dissipation of Mach2 host of converter station | |
| CN221151861U (en) | Air-water cooling device heat exchange core structure for frequency converter capable of being maintained online | |
| CN214338253U (en) | Single-phase plug-in cabinet device | |
| CN109088341A (en) | A kind of lighting distribution box with heat sinking function | |
| CN204119712U (en) | A kind of high voltage electric equipment blower fan redundant apparatus | |
| CN217088484U (en) | Distributed control system control cabinet | |
| CN214379372U (en) | SVG for urban transformer substation | |
| CN216362420U (en) | Air wall air conditioner and data center | |
| CN219734369U (en) | Self-holding type efficient energy-saving electromagnetic valve | |
| CN113047917B (en) | Supercritical air cooling unit and application method thereof | |
| CN220775143U (en) | Visual and modularized direct current screen | |
| CN220964170U (en) | Visual monitoring device for electric cabinet of motor car | |
| CN221101823U (en) | Fan cooling device applied to transformer | |
| CN217336101U (en) | One drags two cooling pump control casees |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |