CN211531029U - Automatic bypass device of frequency converter - Google Patents
Automatic bypass device of frequency converter Download PDFInfo
- Publication number
- CN211531029U CN211531029U CN202020187124.6U CN202020187124U CN211531029U CN 211531029 U CN211531029 U CN 211531029U CN 202020187124 U CN202020187124 U CN 202020187124U CN 211531029 U CN211531029 U CN 211531029U
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- Prior art keywords
- vacuum contactor
- converter
- vacuum
- frequency converter
- isolator
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- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of frequency conversion control equipment, specifically disclose an automatic bypass device of converter, be qualified for the next round of competitions, converter, 2 isolator QS1 and QS2, three vacuum contactor KM1, KM2 and KM3 and high-voltage live display device including power inlet wire, motor, the power inlet wire is connected high-voltage live display device, vacuum contactor KM3 and vacuum contactor KM1 respectively, vacuum contactor KM3 lug connection motor is qualified for the next round of competitions, vacuum contactor KM1 passes through isolator QS1 and connects the converter, isolator QS2 is connected to the converter, isolator QS2 is connected the motor through vacuum contactor KM2 and is qualified for the next round of competitions. The utility model discloses equipment automatic switch to power frequency operation mode when can realizing the converter trouble does not influence system continuous operation.
Description
Technical Field
The utility model relates to a frequency conversion control equipment correlation field specifically is an automatic bypass device of converter.
Background
With the wide application of frequency conversion technology and the continuous improvement of industrial control process. Many important devices require automatic switching to power frequency operation if the frequency converter fails.
If the frequency conversion is in a problem in a conventional control mode, equipment can be stopped and cannot be started, the technological requirements of continuous production cannot be met, although some control modes in the market can realize switching to power frequency operation after the frequency converter fails, the frequency converter needs to be stopped and switched, the technology cannot meet the requirements, and the problem is solved by designing an automatic bypass device of the frequency converter.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an automatic bypass device of converter to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an automatic bypass device of converter, includes power inlet wire, motor outlet wire, converter, 2 isolator QS1 and QS2, three vacuum contactor KM1, KM2 and KM3 and high-voltage live display device, the power inlet wire is connected high-voltage live display device, vacuum contactor KM3 and vacuum contactor KM1 respectively, vacuum contactor KM3 direct connection motor outlet wire, vacuum contactor KM1 passes through isolator QS1 and connects the converter, isolator QS2 is connected to the converter, isolator QS2 is connected the motor outlet wire through vacuum contactor KM 2.
Preferably, the three vacuum contactors KM1, KM2 and KM3 are all electrically interlocked or mechanically interlocked.
Preferably, when the vacuum contactor KM3 is closed, neither the vacuum contactor KM1 nor the vacuum contactor KM2 can be closed; when the vacuum contactors KM1 and KM2 were closed, vacuum contactor KM3 could not be closed.
Preferably, the vacuum contactors KM1, KM2 and KM3 are controlled by an intermediate relay, a time delay relay or a programmable logic controller.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model belongs to the technical field of frequency conversion control equipment, specifically disclose an automatic bypass device of converter, three vacuum contactor KM1, KM2 and KM3 through setting up equipment automatic switch to power frequency operation mode when components and parts cooperation such as auxiliary relay, time delay relay or programmable logic controller can realize automatic converter trouble, do not influence system continuous operation, satisfy the demand of reality production, the utility model discloses simple structure, convenient operation, the practicality is strong.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an automatic bypass device of converter, includes power inlet wire, motor outlet wire, converter, 2 isolator QS1 and QS2, three vacuum contactor KM1, KM2 and KM3 and high-voltage live display device, the power inlet wire is connected high-voltage live display device, vacuum contactor KM3 and vacuum contactor KM1 respectively, vacuum contactor KM3 direct connection motor outlet wire, vacuum contactor KM1 passes through isolator QS1 and connects the converter, isolator QS2 is connected to the converter, isolator QS2 is connected the motor outlet wire through vacuum contactor KM 2.
Further, the three vacuum contactors KM1, KM2 and KM3 were all electrically interlocked or mechanically interlocked.
Further, when the vacuum contactor KM3 was closed, neither the vacuum contactor KM1 nor the vacuum contactor KM2 could be closed; when the vacuum contactors KM1 and KM2 were closed, vacuum contactor KM3 could not be closed.
Further, the vacuum contactors KM1, KM2 and KM3 were controlled by an intermediate relay, a time delay relay or a programmable logic controller.
The working principle is as follows: the utility model relates to an automatic bypass device of converter, normal during operation, vacuum contactor KM1 and KM2 combined floodgate, isolator QS1 and QS2 are closed, when the converter is qualified for the next round of competitions the trouble, auxiliary relay, components and parts cooperation work such as delay relay or programmable logic controller, control vacuum contactor KM1 and KM2 disconnection, closed vacuum contactor KM3 after the delay, the time of delay can be set for by oneself, then carry out maintenance work to the converter behind maintainer disconnection isolator QS1 and the QS2, guarantee maintainer safety.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides an automatic bypass device of converter which characterized in that: the high-voltage electrified display device comprises a power supply incoming line, a motor outgoing line, a frequency converter, 2 isolating switches QS1 and QS2, three vacuum contactors KM1, KM2 and KM3 and a high-voltage electrified display device, wherein the power supply incoming line is respectively connected with the high-voltage electrified display device, a vacuum contactor KM3 and a vacuum contactor KM1, the vacuum contactor KM3 is directly connected with the motor outgoing line, the vacuum contactor KM1 is connected with the frequency converter through an isolating switch QS1, the frequency converter is connected with the isolating switch QS2, and the isolating switch QS2 is connected with the motor outgoing line through a vacuum contactor KM.
2. The automatic bypass device of frequency converter according to claim 1, characterized in that: the three vacuum contactors KM1, KM2 and KM3 were all electrically interlocked or mechanically interlocked.
3. The automatic bypass device of frequency converter according to claim 1, characterized in that: when the vacuum contactor KM3 is closed, neither the vacuum contactor KM1 nor the vacuum contactor KM2 can be closed; when the vacuum contactors KM1 and KM2 were closed, vacuum contactor KM3 could not be closed.
4. The automatic bypass device of frequency converter according to claim 1, characterized in that: the vacuum contactors KM1, KM2 and KM3 were controlled by an intermediate relay, a time delay relay or a programmable logic controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020187124.6U CN211531029U (en) | 2020-02-20 | 2020-02-20 | Automatic bypass device of frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020187124.6U CN211531029U (en) | 2020-02-20 | 2020-02-20 | Automatic bypass device of frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211531029U true CN211531029U (en) | 2020-09-18 |
Family
ID=72440764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020187124.6U Expired - Fee Related CN211531029U (en) | 2020-02-20 | 2020-02-20 | Automatic bypass device of frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211531029U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112436759A (en) * | 2020-11-23 | 2021-03-02 | 顿汉布什(中国)工业有限公司 | Double-starting device of centrifugal water chilling unit and control method thereof |
| CN112682310A (en) * | 2020-12-18 | 2021-04-20 | 江西三川节能股份有限公司 | Cement plant high temperature fan economizer system |
-
2020
- 2020-02-20 CN CN202020187124.6U patent/CN211531029U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112436759A (en) * | 2020-11-23 | 2021-03-02 | 顿汉布什(中国)工业有限公司 | Double-starting device of centrifugal water chilling unit and control method thereof |
| CN112682310A (en) * | 2020-12-18 | 2021-04-20 | 江西三川节能股份有限公司 | Cement plant high temperature fan economizer system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |