CN204144698U - High-voltage frequency-conversion by-pass cabinet - Google Patents
High-voltage frequency-conversion by-pass cabinet Download PDFInfo
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- CN204144698U CN204144698U CN201420555442.8U CN201420555442U CN204144698U CN 204144698 U CN204144698 U CN 204144698U CN 201420555442 U CN201420555442 U CN 201420555442U CN 204144698 U CN204144698 U CN 204144698U
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- frequency conversion
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Abstract
The utility model relates to electrical equipment, high-voltage frequency-conversion by-pass cabinet, comprises cabinet, and is arranged on three set control systems of cabinet inside, and controls three control rotating disks of three set control systems respectively; Described three set control systems are respectively the direct wire control system be connected with motor, and end control system after the frequency conversion front-end control system be connected with the input of frequency converter and the frequency conversion be connected with the output of frequency converter; End control system frequency conversion branch road in series after frequency conversion front-end control system and frequency conversion, direct wire control system and power frequency branch road, frequency conversion branch road and power frequency branch circuit parallel connection and frequency conversion branch road and power frequency branch road can not be connected simultaneously; Program closedown structure and electric-magnetic lock structure is equipped with, in order to prevent various misoperations when manually using frequency conversion bypass cabinet between three control rotating disks of this high-voltage frequency-conversion by-pass cabinet.
Description
Technical field
The utility model relates to electrical equipment, particularly relates to high-voltage frequency-conversion by-pass cabinet.
Background technology
Along with variable frequency control is theoretical and the further developing of manufacturing process, domestic and international frequency conversion producer has carried out a large amount of technological improvement and perfect to its frequency converter product, the operational reliability of frequency converter is more greatly improved, all the time, how to avoid the accident that frequency converter failure causes, improve the operational reliability of set auxiliary machinery, become the most important consideration of power plant.For this reason, except the frequency converter product that selection reliability is high, also can require to configure bypass cabinet, the effect of bypass cabinet is frequency converter failure, also can realize the bypass of motor power frequency during maintenance to run, the normal operation of generating set is not affected to ensure subsidiary engine power frequency to drag, improve set auxiliary machinery operational reliability and system availability, concrete is exactly when a frequency converter part breaks down, system performs the switching of operational mode after this partial fault being detected, the function of derate or the work of non-derate is carried out continuously with guarantee system, its operational reliability can be improved widely, meet the requirement of high reliability user, so that the system equipment of this kind of user or technique can not be affected because of frequency converter operation troubles, breakdown maintenance can be carried out to frequency conversion equipment in the suitable time.
The principle of high-voltage frequency-conversion by-pass cabinet adopts frequency conversion branch road and power frequency branch circuit parallel connection exactly, disconnects frequency conversion branch road, connect power frequency branch road when frequency converter damages.And the deficiency that existing high-voltage frequency-conversion by-pass cabinet exists is poor stability, because fault or misoperation cause the damage of frequency converter, accident potential can be there is.And be directed to the safety issue of existing high-voltage frequency-conversion by-pass cabinet existence, the applicant is in the high-voltage frequency conversion bypass structure of also applying for being correlated with before, see that application number is the Chinese patent text of 201320675105.8, in this earlier application, although rotate plug-in strip plate and on frequency conversion front end plug-in strip and direct-connected plug-in strip between the double-throw disconnecting switch of mechanical interlocked function is set, namely a road can only be communicated with, in order to improve fail safe, but still likely there is misoperation risk in realizing, fail safe is also not enough.
Summary of the invention
In order to solve the problem, the purpose of this utility model is to provide a kind of safe and reliable high-voltage frequency-conversion by-pass cabinet, this high-voltage frequency-conversion by-pass cabinet is provided with program closedown structure and electric-magnetic lock structure, in order to prevent various misoperations when manually using frequency conversion bypass cabinet.
In order to realize above-mentioned object, the utility model have employed following technical scheme:
High-voltage frequency-conversion by-pass cabinet, comprises cabinet, and is arranged on three set control systems of cabinet inside, and controls three control rotating disks of three set control systems respectively; Described three set control systems are respectively the direct wire control system be connected with motor, and end control system after the frequency conversion front-end control system be connected with the input of frequency converter and the frequency conversion be connected with the output of frequency converter; End control system frequency conversion branch road in series after frequency conversion front-end control system and frequency conversion, direct wire control system and power frequency branch road, frequency conversion branch road and power frequency branch circuit parallel connection and frequency conversion branch road and power frequency branch road can not be connected simultaneously;
Described direct wire control system comprises direct-connected control circuit, and the direct-connected disconnecting link mated with it; Frequency conversion front-end control system comprises frequency conversion front-end control circuit, and the frequency conversion front end disconnecting link mated with it; After frequency conversion, end control system comprises frequency conversion rear end control circuit, and the frequency conversion rear end disconnecting link mated with it; The inner end of direct-connected disconnecting link, frequency conversion front end disconnecting link and frequency conversion rear end disconnecting link is all hinged on cabinet inside, and wherein direct-connected disconnecting link is connected with the inner end of frequency conversion front end disconnecting link; Described three control rotating disks are respectively direct-connected control rotating disk, frequency conversion front-end control rotating disk and frequency conversion rear end and control rotating disk, and regular running through is arranged on the front panel of cabinet successively from left to right for direct-connected control rotating disk, frequency conversion front-end control rotating disk and frequency conversion rear end control rotating disk; The outer end that frequency conversion rear end controls rotating disk control frequency conversion rear end disconnecting link is connected with frequency conversion rear end control circuit or disconnects, the outer end that direct-connected control rotating disk controls direct-connected disconnecting link is connected with direct-connected control circuit or disconnects, and frequency conversion front-end control rotating disk controls the outer end of frequency conversion front end disconnecting link and frequency conversion front-end control connection or disconnection;
Described frequency conversion front-end control rotating disk and frequency conversion rear end control to be provided with program closedown structure between rotating disk, and program closedown structure comprises and is arranged on first on frequency conversion front-end control rotating disk and stops locking plate, and be arranged on that frequency conversion rear end controls on rotating disk second stops locking plate; First stops locking plate is on the later half rotating disk of frequency conversion front-end control rotating disk, and second stops locking plate is in frequency conversion rear end and controls on the later half rotating disk of rotating disk, and first stops locking plate and second stops locking plate and be in circumferentially same;
Described cabinet is also provided with two electric-magnetic lock structures, electric-magnetic lock structure comprises electromagnetic lock main body, and is arranged on the electromagnetism pin in electromagnetic lock main body, and the high voltage induction device be connected with electromagnetic lock main body; Two high voltage induction devices are separately positioned on direct-connected disconnecting link and frequency conversion rear end disconnecting link, two electromagnetic lock main bodys are separately positioned on the cabinet front panel on direct-connected control rotating disk and control rotating disk side, frequency conversion rear end, and direct-connected control rotating disk and frequency conversion rear end control rotating disk side is equipped with the pin-and-hole matched with electromagnetism pin; When on direct-connected disconnecting link or frequency conversion rear end disconnecting link, high voltage induction device monitors charged, the electromagnetism lock in the electromagnetic lock main body of mating with it lives direct-connected control rotating disk or frequency conversion rear end controls rotating disk.
The utility model adopts technique scheme, and this high-voltage frequency-conversion by-pass cabinet adopts three control rotating disks to control three set control systems respectively, and connected mode is clear and definite, reduces the possibility of misoperation, improves fail safe, and this high-voltage frequency-conversion by-pass cabinet except have frequency conversion branch road and power frequency branch road can not be connected simultaneously safeguard measure except, be also equipped with multiple operator guards, compare the high-voltage frequency-conversion by-pass cabinet with earlier application, it has the advantage of two aspects: 1, the frequency conversion front-end control rotating disk of this high-voltage frequency conversion bypass and frequency conversion rear end control to be provided with program closedown structure between rotating disk, the switching order that locking plate and second stops locking plate restriction frequency conversion front-end control rotating disk and frequency conversion rear end control rotating disk is stopped by first in program closedown structure, first can only be closed during use frequency conversion front-end control rotating disk, close frequency conversion rear end control rotating disk again, and then when preventing power frequency branch road from connecting, close frequency conversion rear end control rotating disk, high-tension current is back to by motor the situation generation that inverter output terminal shines into frequency converter damage, 2, this high-voltage frequency conversion bypass be provided with the electric-magnetic lock structure controlling rotating disk with direct-connected control rotating disk, frequency conversion rear end and match, during work, when on direct-connected disconnecting link or frequency conversion rear end disconnecting link, high voltage induction device monitors charged, the electromagnetism lock in the electromagnetic lock main body of mating with it lives direct-connected control rotating disk or frequency conversion rear end controls rotating disk, namely prevent direct-connected disconnecting link or the disconnecting link hot line job of frequency conversion rear end, shine into disconnecting link and burn, the situation of initiation fire occurs.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is circuit diagram of the present utility model.
Fig. 3 is guidance panel schematic diagram of the present utility model.
Fig. 4 is the structural representation of three control rotating disks.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in further detail.
High-voltage frequency-conversion by-pass cabinet as shown in Fig. 1 ~ Fig. 4, comprises cabinet 1, and is arranged on three set control systems of cabinet 1 inside, and controls three control rotating disks of three set control systems respectively.Three set control systems are respectively the direct wire control system be connected with motor 2, and end control system after the frequency conversion front-end control system be connected with the input of frequency converter 3 and the frequency conversion be connected with the output of frequency converter 3.End control system frequency conversion branch road in series after frequency conversion front-end control system and frequency conversion, direct wire control system and power frequency branch road, frequency conversion branch road and power frequency branch circuit parallel connection and frequency conversion branch road and power frequency branch road can not be connected simultaneously.
As shown in Figure 1, a end of cabinet 1 inside connects power supply, and b end connects frequency converter 3 input, and c end connects frequency converter 3 output, and d end connects motor 2; Direct wire control system comprises direct-connected control circuit 41, and the direct-connected disconnecting link 42 mated with it; Frequency conversion front-end control system comprises frequency conversion front-end control circuit 43, and the frequency conversion front end disconnecting link 44 mated with it; After frequency conversion, end control system comprises frequency conversion rear end control circuit 45, and the frequency conversion rear end disconnecting link 46 mated with it.The inner end of direct-connected disconnecting link 42, frequency conversion front end disconnecting link 44 and frequency conversion rear end disconnecting link 46 is all hinged on cabinet 1 inside, and wherein direct-connected disconnecting link 42 is connected with the inner end of frequency conversion front end disconnecting link 44.Three control rotating disks are respectively direct-connected control rotating disk 51, frequency conversion front-end control rotating disk 52 and frequency conversion rear end and control rotating disk 53, direct-connected control rotating disk 51, frequency conversion front-end control rotating disk 52 and frequency conversion rear end control rotating disk 53 from left to right successively rule run through be arranged on cabinet 1 front panel on.The outer end that frequency conversion rear end control rotating disk 53 controls frequency conversion rear end disconnecting link 46 is connected with frequency conversion rear end control circuit 45 or disconnects, the outer end that direct-connected control rotating disk 51 controls direct-connected disconnecting link 42 is connected with direct-connected control circuit 41 or disconnects, and the outer end that frequency conversion front-end control rotating disk 52 controls frequency conversion front end disconnecting link 44 is connected with frequency conversion front-end control circuit 43 or disconnects.
Frequency conversion front-end control rotating disk 52 and frequency conversion rear end control to be provided with program closedown structure between rotating disk 53, program closedown structure comprises and is arranged on first on frequency conversion front-end control rotating disk 52 and stops locking plate 71, and be arranged on that frequency conversion rear end controls on rotating disk 53 second stops locking plate 72.First stops locking plate 71 is on the later half rotating disk of frequency conversion front-end control rotating disk 52, second stops locking plate 72 is on the later half rotating disk of frequency conversion rear end control rotating disk 53, first stops locking plate 71 and second stops locking plate 72 and is in circumferentially same, and first stops locking plate 71 is in the below that second stops locking plate 72; During combined floodgate, only locking plate adjoint turn-table down rotates, and therefore first stops locking plate 71 and limit second and stop locking plate 72 and down rotate, and after needing first to be closed a floodgate by frequency conversion front-end control rotating disk 52, then frequency conversion rear end is controlled rotating disk 53 closes a floodgate; During separating brake, first frequency conversion rear end can only be controlled rotating disk 53 separating brake, then by frequency conversion front-end control rotating disk 52 separating brake.By said procedure closedown structure, when can prevent power frequency branch road from connecting, frequency conversion rear end of closing controls rotating disk 53, and high-tension current is back to frequency converter 3 output by motor and shine into the situation generation that frequency converter 3 damages.
Cabinet 1 is also provided with two electric-magnetic lock structures, electric-magnetic lock structure comprises electromagnetic lock main body 81, and is arranged on the electromagnetism pin 82 in electromagnetic lock main body 81, and the high voltage induction device be connected with electromagnetic lock main body 81.Two high voltage induction devices are separately positioned on direct-connected disconnecting link 42 and frequency conversion rear end disconnecting link 46, two electromagnetic lock main bodys 81 are separately positioned on cabinet 1 front panel on direct-connected control rotating disk 51 and control rotating disk 53 side, frequency conversion rear end, and direct-connected control rotating disk 51 and frequency conversion rear end control rotating disk 53 side is equipped with the second pin-and-hole matched with electromagnetism pin 82.During work, when on direct-connected disconnecting link 42 or frequency conversion rear end disconnecting link 46, high voltage induction device monitors charged, the electromagnetism pin 82 in the electromagnetic lock main body 81 of mating with it pins direct-connected control rotating disk 51 or frequency conversion rear end controls rotating disk 53; Only not chargedly on direct-connected disconnecting link 42 or frequency conversion rear end disconnecting link 46 could to operate, namely to prevent direct-connected disconnecting link 42 or disconnecting link 46 hot line job of frequency conversion rear end, shine into disconnecting link and burn, the situation of initiation fire occurs.
The high-voltage frequency-conversion by-pass cabinet of said structure adopts three control rotating disks to control three set control systems respectively, and connected mode is clear and definite, reduces the possibility of misoperation, improves fail safe; And this high-voltage frequency-conversion by-pass cabinet is equipped with program closedown structure and electric-magnetic lock structure, in order to prevent various misoperations when manually using frequency conversion bypass cabinet.And cooperatively interact between described program closedown structure and electric-magnetic lock structure work, as electric-magnetic lock structure only controls rotating disk 53 at direct-connected control rotating disk 51 and frequency conversion rear end, and do not arrange on frequency conversion front-end control rotating disk 52, if and frequency conversion front-end control rotating disk 52 can separating brake, disconnecting link can be shone into equally burn, initiation fire; But because frequency conversion front-end control rotating disk 52 and frequency conversion rear end control to be provided with program closedown structure between rotating disk 53, during separating brake, first frequency conversion rear end can only be controlled rotating disk 53 separating brake, again by frequency conversion front-end control rotating disk 52 separating brake, therefore frequency conversion rear end controls rotating disk 53 by after the pinning of electric-magnetic lock structure, frequency conversion front-end control rotating disk 52 is pinned by program closedown structure, also cannot open; Said structure makes the operating procedure of this high-voltage frequency-conversion by-pass cabinet tight, normative strong, and corresponding fail safe is high.
Claims (1)
1. high-voltage frequency-conversion by-pass cabinet, is characterized in that: comprise cabinet, and is arranged on three set control systems of cabinet inside, and controls three control rotating disks of three set control systems respectively; Described three set control systems are respectively the direct wire control system be connected with motor, and end control system after the frequency conversion front-end control system be connected with the input of frequency converter and the frequency conversion be connected with the output of frequency converter; End control system frequency conversion branch road in series after frequency conversion front-end control system and frequency conversion, direct wire control system and power frequency branch road, frequency conversion branch road and power frequency branch circuit parallel connection and frequency conversion branch road and power frequency branch road can not be connected simultaneously;
Described direct wire control system comprises direct-connected control circuit, and the direct-connected disconnecting link mated with it; Frequency conversion front-end control system comprises frequency conversion front-end control circuit, and the frequency conversion front end disconnecting link mated with it; After frequency conversion, end control system comprises frequency conversion rear end control circuit, and the frequency conversion rear end disconnecting link mated with it; The inner end of direct-connected disconnecting link, frequency conversion front end disconnecting link and frequency conversion rear end disconnecting link is all hinged on cabinet inside, and wherein direct-connected disconnecting link is connected with the inner end of frequency conversion front end disconnecting link; Described three control rotating disks are respectively direct-connected control rotating disk, frequency conversion front-end control rotating disk and frequency conversion rear end and control rotating disk, and regular running through is arranged on the front panel of cabinet successively from left to right for direct-connected control rotating disk, frequency conversion front-end control rotating disk and frequency conversion rear end control rotating disk; The outer end that frequency conversion rear end controls rotating disk control frequency conversion rear end disconnecting link is connected with frequency conversion rear end control circuit or disconnects, the outer end that direct-connected control rotating disk controls direct-connected disconnecting link is connected with direct-connected control circuit or disconnects, and frequency conversion front-end control rotating disk controls the outer end of frequency conversion front end disconnecting link and frequency conversion front-end control connection or disconnection;
Described frequency conversion front-end control rotating disk and frequency conversion rear end control to be provided with program closedown structure between rotating disk, and program closedown structure comprises and is arranged on first on frequency conversion front-end control rotating disk and stops locking plate, and be arranged on that frequency conversion rear end controls on rotating disk second stops locking plate; First stops locking plate is on the later half rotating disk of frequency conversion front-end control rotating disk, and second stops locking plate is in frequency conversion rear end and controls on the later half rotating disk of rotating disk, and first stops locking plate and second stops locking plate and be in circumferentially same;
Described cabinet is also provided with two electric-magnetic lock structures, electric-magnetic lock structure comprises electromagnetic lock main body, and is arranged on the electromagnetism pin in electromagnetic lock main body, and the high voltage induction device be connected with electromagnetic lock main body; Two high voltage induction devices are separately positioned on direct-connected disconnecting link and frequency conversion rear end disconnecting link, two electromagnetic lock main bodys are separately positioned on the cabinet front panel on direct-connected control rotating disk and control rotating disk side, frequency conversion rear end, and direct-connected control rotating disk and frequency conversion rear end control rotating disk side is equipped with the pin-and-hole matched with electromagnetism pin; When on direct-connected disconnecting link or frequency conversion rear end disconnecting link, high voltage induction device monitors charged, the electromagnetism lock in the electromagnetic lock main body of mating with it lives direct-connected control rotating disk or frequency conversion rear end controls rotating disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555442.8U CN204144698U (en) | 2014-09-25 | 2014-09-25 | High-voltage frequency-conversion by-pass cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555442.8U CN204144698U (en) | 2014-09-25 | 2014-09-25 | High-voltage frequency-conversion by-pass cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204144698U true CN204144698U (en) | 2015-02-04 |
Family
ID=52421363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420555442.8U Expired - Fee Related CN204144698U (en) | 2014-09-25 | 2014-09-25 | High-voltage frequency-conversion by-pass cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204144698U (en) |
-
2014
- 2014-09-25 CN CN201420555442.8U patent/CN204144698U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20160925 |