CN214429486U - Spare power automatic switching device for primary load in chlor-alkali chemical industry - Google Patents
Spare power automatic switching device for primary load in chlor-alkali chemical industry Download PDFInfo
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- CN214429486U CN214429486U CN202120925379.2U CN202120925379U CN214429486U CN 214429486 U CN214429486 U CN 214429486U CN 202120925379 U CN202120925379 U CN 202120925379U CN 214429486 U CN214429486 U CN 214429486U
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Abstract
The utility model discloses a chlor-alkali chemical industry one-level load is equipped with from throwing device, including main motor, stand-by motor, under-voltage detection module one, under-voltage detection module two, main motor is connected with main converter electricity, stand-by motor is connected with reserve converter electricity, under-voltage detection module one establishes ties with reserve converter after being parallelly connected with main converter, under-voltage detection module two establishes ties with main converter after being parallelly connected with reserve converter, the utility model discloses realize that two motors are each other for being equipped with from throwing the motor, technological parameter when ensureing chlor-alkali chemical industry operation is stable, unexpected parking appears when the operation motor, and stand-by motor automatic start ensures the safe and stable operation of system.
Description
Technical Field
The utility model relates to a spare power automatic switching device of chemical production system safe operation specifically is a chlor-alkali chemical industry one-level load spare power automatic switching device.
Background
The first-level load of the chlor-alkali chemical industry is started by using a frequency converter, and can not be stopped normally, although one is configured for one for standby, when the running motor is stopped accidentally, the standby motor can not be automatically started to be put into operation, the stopping of the running motor is found only manually, and the standby motor is started again, so that the running defect influences the safe running and even causes the system to be stopped.
Disclosure of Invention
An object of the utility model is to provide a chlor-alkali chemical industry one-level load is equipped with from switching device, a serial communication port, including main motor, stand-by motor, under-voltage detection module one, under-voltage detection module two, main motor is connected with main frequency converter electricity, stand-by motor is connected with stand-by frequency converter electricity, under-voltage detection module one establishes ties with stand-by frequency converter after connecting in parallel with main frequency converter, under-voltage detection module two establishes ties with main frequency converter after connecting in parallel with stand-by frequency converter.
Preferably, a first switch is arranged on the main frequency converter, a second switch is arranged on the standby frequency converter, the first under-voltage detection module is connected with the main frequency converter in parallel and then connected with the second switch on the standby frequency converter in series, and the second under-voltage detection module is connected with the standby frequency converter in parallel and then connected with the first switch on the main frequency converter in series.
Preferably, a first spare power automatic switching switch is connected in series in a connecting loop of the first under-voltage detection module and the second switch in series, and a second spare power automatic switching switch is connected in series in a connecting loop of the second under-voltage detection module and the first switch in series.
Preferably, the first under-voltage detection module and the second under-voltage detection module are under-voltage relays respectively.
Preferably, the main frequency converter is electrically connected with the main motor after being connected with the first breaker, and the standby frequency converter is electrically connected with the standby motor after being connected with the second breaker.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a set up main motor, stand-by motor, under-voltage detection module I, under-voltage detection module two, be connected main motor and main converter electricity, stand-by motor is connected with reserve converter electricity, and establish ties with under-voltage detection module I and the parallelly connected back of main converter with reserve converter, under-voltage detection module two establishes ties with main converter after parallelly connected with reserve converter, realize that two motors are each other for being equipped with the dead man motor, technological parameter when ensureing chlor-alkali chemical industry operation is stable, unexpected parking appears when the operation motor, stand-by motor automatic start ensures the safe and stable operation of system.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a primary load backup automatic switching device in chlor-alkali chemical industry provided by the utility model;
description of reference numerals:
the system comprises a main motor 1, a main frequency converter 2, a circuit breaker I3, an under-voltage detection module I4, a spare power automatic switch I5, a spare motor 6, a spare frequency converter 7, a circuit breaker II 8, an under-voltage detection module II 9, a spare power automatic switch II 10, a switch I201 and a switch II 701.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, but it should be understood that the scope of the present invention is not limited by the specific embodiments.
Example (b):
as shown in fig. 1, a first-level load backup automatic switching device for chlor-alkali chemical industry is characterized by comprising a main motor 1, a backup motor 6, a first under-voltage detection module 4 and a second under-voltage detection module 9, wherein the main motor 1 is electrically connected with a main frequency converter 2, the backup motor 6 is electrically connected with a backup frequency converter 7, the first under-voltage detection module 4 is connected with the main frequency converter 2 in parallel and then connected with the backup frequency converter 7 in series, and the second under-voltage detection module 9 is connected with the backup frequency converter 7 in parallel and then connected with the main frequency converter 2 in series.
When the device is applied, the first under-voltage detection module 4 is in a normally open state, when the main frequency converter 2 connected with the main motor 1 is changed from a normal working circuit state to a fault circuit state, the first under-voltage detection module 4 connected with the main frequency converter 2 in parallel detects that the main frequency converter 2 is under-voltage, the normally open contact of the first under-voltage detection module 4 is closed, and the standby frequency converter 7 connected with the first under-voltage detection module 4 in series starts the standby motor 6 to be in a working state. Similarly, when the standby frequency converter 7 connected with the standby motor 6 normally works, the second under-voltage detection module 9 is in a normally open state, if the second under-voltage detection module 9 detects that the standby frequency converter 7 is under-voltage, the normally open contact of the second under-voltage detection module 9 is closed, and the main frequency converter 2 connected with the second under-voltage detection module 9 in series starts the main motor 1 to be in a working state. Therefore, the main motor 1 and the standby motor 6 can be mutually backup automatic switching motors.
The standby frequency converter is characterized in that a first switch 201 is arranged on the main frequency converter 2, a second switch 701 is arranged on the standby frequency converter 7, a first under-voltage detection module 4 is connected with the main frequency converter 2 in parallel and then connected with a second switch 701 on the standby frequency converter 7 in series, a second under-voltage detection module 9 is connected with the standby frequency converter 7 in parallel and then connected with the first switch 201 on the main frequency converter 2 in series, when the standby motor 6 connected with the standby frequency converter 7 is in a standby state, the second switch 701 is in a normally closed state, when the first under-voltage detection module 4 detects that the main frequency converter 2 is under-voltage, a normally open contact of the first under-voltage detection module 4 is closed, a loop formed by the second switch 701 connected with the first under-voltage detection module 4 in series is connected, the standby frequency converter 7 is started, and the standby motor 6 is put into standby.
When the main motor 1 connected with the main frequency converter 2 is in a standby state, the switch I201 is in a normally closed state, when the under-voltage detection module II 9 detects that the standby frequency converter 7 is under-voltage, the normally open contact of the under-voltage detection module II 9 is closed, a loop formed by the switch I201 connected with the under-voltage detection module II 9 in series is connected, the main frequency converter 2 is started, and the main motor 1 is put into standby.
A first spare power automatic switching switch 5 is connected in series in a connecting loop formed by connecting the first under-voltage detection module 4 and the second switch 701 in series, and the first spare power automatic switching switch 5 is switched on, so that the spare motor 6 is put into use when the main motor 1 is stopped; when the standby motor 6 is maintained or is not standby, the first backup automatic switch 5 can be switched off, a second backup automatic switch 10 is connected in series in a connecting loop formed by connecting the second under-voltage detection module 9 and the first switch 201 in series, and the second backup automatic switch 10 is switched on, so that the main motor 1 is put into use when the standby motor 6 is stopped; when the main motor 1 is maintained or is not standby, the second backup automatic switching switch 10 can be disconnected.
The first under-voltage detection module 4 and the second under-voltage detection module 9 are respectively under-voltage relays, the under-voltage relays in the first under-voltage detection module 4 are connected with the main frequency converter 2 in parallel, when the voltage of the main frequency converter 2 is lower than a set value of the under-voltage relays, due to the fact that magnetic force generated by an electromagnetic system in the under-voltage relays is reduced, under the action of a reset spring, normally open contacts of the under-voltage relays are closed, and the standby frequency converter 7 connected with the first under-voltage detection module 4 in series is started; similarly, the under-voltage relay in the second under-voltage detection module 9 is connected in parallel with the standby frequency converter 7, when the voltage of the standby frequency converter 7 is lower than the set value of the under-voltage relay, because the magnetic force generated by the electromagnetic system in the under-voltage relay becomes small, under the action of the reset spring, the normally open contact is closed, and then the main frequency converter 2 connected with the second under-voltage detection module 9 in series is started.
The main frequency converter 2 is electrically connected with the main motor 1 after being connected with the first circuit breaker 3, the standby frequency converter 7 is electrically connected with the second circuit breaker 8 and the standby motor 6, the circuit breakers are connected between the frequency converters and the motors for realizing the connection and disconnection of circuits, and the circuits can be quickly and safely cut off when short-circuit faults occur to the circuits.
The utility model discloses a theory of operation and use flow: when the main frequency converter 2 connected with the main motor 1 normally works, the first backup power automatic switching switch 5 is switched on, the second switch 701 is in a normally closed state, the first under-voltage detection module 4 is in a normally open state, if the first under-voltage detection module 4 detects that the main frequency converter 2 is under-voltage, namely the main motor 1 breaks down, the normally open contact of the first under-voltage detection module 4 is closed, and the backup frequency converter 7 connected with the first under-voltage detection module 4 in series starts the backup motor 6 to be switched into a working state.
When the standby frequency converter 7 connected with the standby motor 6 normally works, the standby automatic switching switch II 10 is switched on, the switch I201 is in a normally closed state, the under-voltage detection module II 9 is in a normally open state, if the under-voltage detection module II 9 detects that the standby frequency converter 7 is under-voltage, namely the standby motor 6 breaks down, the normally open contact of the under-voltage detection module II 9 is closed, and the standby main frequency converter 2 connected with the under-voltage detection module II 9 in series starts the main motor 1 to be switched into a working state.
Finally, the description is as follows: the above disclosure is only one specific embodiment of the present invention, but the present invention is not limited thereto, and any changes that can be considered by those skilled in the art should fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a chlor-alkali chemical industry one-level load is equipped with from moving device, its characterized in that, including main motor (1), stand-by motor (6), under-voltage detection module (4), under-voltage detection module two (9), main motor (1) is connected with main converter (2) electricity, stand-by motor (6) is connected with stand-by converter (7) electricity, under-voltage detection module one (4) and main converter (2) are parallelly connected the back and are established ties with stand-by converter (7), under-voltage detection module two (9) and stand-by converter (7) are parallelly connected the back and are established ties with main converter (2).
2. The automatic spare power switching device for the primary load in the chlor-alkali chemical industry as claimed in claim 1, wherein: the high-voltage direct current converter is characterized in that a first switch (201) is arranged on the main frequency converter (2), a second switch (701) is arranged on the standby frequency converter (7), a first under-voltage detection module (4) is connected with the main frequency converter (2) in parallel and then connected with the second switch (701) on the standby frequency converter (7) in series, and a second under-voltage detection module (9) is connected with the standby frequency converter (7) in parallel and then connected with the first switch (201) on the main frequency converter (2) in series.
3. The automatic spare power switching device for the primary load in the chlor-alkali chemical industry as claimed in claim 2, wherein: a first spare power automatic switching switch (5) is connected in series in a connecting loop formed by connecting the first under-voltage detection module (4) and the second switch (701) in series, and a second spare power automatic switching switch (10) is connected in series in a connecting loop formed by connecting the second under-voltage detection module (9) and the first switch (201) in series.
4. The automatic spare power switching device for the primary load in the chlor-alkali chemical industry as claimed in claim 1, wherein: the first under-voltage detection module (4) and the second under-voltage detection module (9) are under-voltage relays respectively.
5. The automatic spare power switching device for the primary load in the chlor-alkali chemical industry as claimed in claim 1, wherein: the main frequency converter (2) is electrically connected with the main motor (1) after being connected with the first breaker (3), and the standby frequency converter (7) is electrically connected with the standby motor (6) after being connected with the second breaker (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120925379.2U CN214429486U (en) | 2021-04-30 | 2021-04-30 | Spare power automatic switching device for primary load in chlor-alkali chemical industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120925379.2U CN214429486U (en) | 2021-04-30 | 2021-04-30 | Spare power automatic switching device for primary load in chlor-alkali chemical industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214429486U true CN214429486U (en) | 2021-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120925379.2U Active CN214429486U (en) | 2021-04-30 | 2021-04-30 | Spare power automatic switching device for primary load in chlor-alkali chemical industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214429486U (en) |
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2021
- 2021-04-30 CN CN202120925379.2U patent/CN214429486U/en active Active
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