CN204652268U - Hydrogen compressor electric reconstruction control system - Google Patents
Hydrogen compressor electric reconstruction control system Download PDFInfo
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- CN204652268U CN204652268U CN201520411479.8U CN201520411479U CN204652268U CN 204652268 U CN204652268 U CN 204652268U CN 201520411479 U CN201520411479 U CN 201520411479U CN 204652268 U CN204652268 U CN 204652268U
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Abstract
The utility model discloses a kind of hydrogen compressor electric reconstruction control system, aim to provide a kind of can avoiding shake electrical phenomena and realize the reliability service of hydrogen compressor, reduce the hydrogen compressor electric reconstruction control system of operation risk, its drip irrigation device is coupled with the switching of control module in order to the power frequency startup and variable frequency starting that control frequency converter between described frequency converter and hydrogen compressor, described control module comprises voltage cell, signal input unit, control and protection unit, microcomputerized controller and communication control unit, the control and protection of hydrogen compressor can be realized, the utility model is applicable to the electric control system of hydrogen compressor.
Description
Technical field
The utility model relates to a kind of electric control system of hydrogen compressor, and more particularly, it relates to a kind of hydrogen compressor electric reconstruction control system of voltage shock avoiding.
Background technology
Along with the raising of scientific and technological level; high-risk chemical enterprise is also flourish; along with the introducing of garden large enterprise; fault in supply line increases; and provide industrial power to there will be the phenomenon of powering and rocking for the enterprise that done by 220KV power transformation; this phenomenon is called rolling electricity; " shake electric " and refer to that electric power system is in running; due to thunderbolt, shorted to earth, fault reclosing, prepared auto restart, enterprises, the outside electric network fault caused, the fluctuation by a relatively large margin of electrical network moment or short supply interruption can be caused to recover again.
The operation great majority of motor adopt A.C. contactor, and soft start, frequency converter etc. start control appliance and control.When " shaking electric ", ac contactor coil can discharge, and soft start and frequency converter also can be shut down, and therefore usually the low voltage motor of many visual plants can be caused to shut down because of " shaking electric " in the industrial production.And Key generating unit shutdown can cause large-sized unit, even can cause whole process units Concatenate shut-down; whole continuous flow procedure is finally caused to interrupt; process units is forced to stop in emergency, and causes huge economic loss to enterprise, and the serious accident such as fire, blast sometimes also can be caused to occur.
When the catastrophic fluctuation of grid collapses system voltage, process units electric equipment will be caused to stop labour, make production system generation interlock shutdown accident.Under accident conditions, danger medium may be caused to leak, make company cause economic loss or external environment to be affected.For guaranteeing the parking accident that process units stable operation solution electrical network " rolling electricity " causes, running status cannot be supplied to staff, therefore needs to carry out technological transformation to the main flow equipment electrical control loop of existing hydrogen compressor.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is that providing a kind of can avoid shaking electrical phenomena and the reliability service realizing hydrogen compressor, reduces the hydrogen compressor electric reconstruction control system of operation risk.
For achieving the above object, the utility model provides following technical scheme: a kind of hydrogen compressor electric reconstruction control system, comprise three-phase bus, frequency converter and the hydrogen compressor of connecting successively, be coupled with control module between described frequency converter and hydrogen compressor in order to control the switching between the power frequency startup of frequency converter and variable frequency starting, described control module comprises voltage cell, control and protection unit and microcomputerized controller;
Described voltage cell is coupled to three-phase bus in order to detect three-phase bus voltage whether fault export fault-signal;
Described microcomputerized controller is coupled to voltage cell to receive fault-signal and to export time delayed signal;
Described control and protection unit is coupled to microcomputerized controller in order to reception delay signal and exports control signal;
Described hydrogen compressor is coupled to control and protection unit in order to reception control signal, and in response to control signal, with time delayed turn-off hydrogen compressor power supply.
Preferably, described control module also comprises communication control unit and signal input unit;
Described control and protection unit also produces operating state signal;
Described signal input unit is coupled to microcomputerized controller in order to respond operating state signal and operating state signal is inputed to microcomputerized controller;
Described communication control unit is coupled to microcomputerized controller in order to communicate with one another and to show running status.
Preferably, described voltage cell comprises threephase current transformer and residual current transformer, and described threephase current transformer and residual current transformer are all coupled to microcomputerized controller in order to detect current failure.
Preferably, described control and protection unit comprises variable frequency starting button, power frequency startup button, variable frequency control portion and industrial frequency control portion;
Described variable frequency starting button is coupled to variable frequency control portion in order to send variable frequency starting signal;
Described variable frequency control portion is coupled between hydrogen compressor and frequency converter in order to respond variable frequency starting signal and frequency converter is worked in variable mode;
Described power frequency startup button is coupled to industrial frequency control portion in order to send power frequency startup signal;
Described industrial frequency control portion is coupled between hydrogen compressor and frequency converter in order to respond power frequency startup signal and frequency converter is worked in power frequency pattern.
Preferably, described communication control unit is DCS controller, and described DCS controller and microcomputerized controller communicate to connect in order to status signal transmission, and described DCS controller also communicates to connect with frequency converter to communicate in order to analog signal and transmits.
Preferably, described microcomputerized controller is also coupled with malfunction indicator lamp.
Compared with prior art, the beneficial effects of the utility model are: by the three-phase bus of connecting successively, frequency converter and hydrogen compressor realize the control of hydrogen compressor, hydrogen compressor works in power frequency or frequency conversion two kinds of patterns, in time occurring in electrical network shaking electrical phenomena, three-phase bus is due to of short duration decompression, cause the relay coil dead electricity controlled, hydrogen compressor and other equipment quit work, enterprise is produced and causes damage, and the control module by coupling between frequency converter and hydrogen compressor, section is with the switching of the power frequency startup and variable frequency starting that control frequency converter, make frequency converter can pass through to check self-control, and control module comprises voltage cell, signal input unit, control and protection unit, microcomputerized controller and communication control unit, can by checking circuit, fault-signal can be fed back simultaneously, can time-delay relay saltus step due to of short duration dead electricity, make relay contact circuit still can keep original state when of short duration dead electricity, can not saltus step, and can reset automatically when power supply recovers again time, need not manually restart, whole control system can normally be worked.
Accompanying drawing explanation
Fig. 1 is the voltage circuit control circuit of the utility model hydrogen compressor electric reconstruction control system embodiment;
Fig. 2 is Control protection loop circuit figure;
Fig. 3 is the circuit diagram in DCS Control on Communication loop.
In figure 1, three-phase bus; 2, frequency converter; 3, hydrogen compressor; 411, threephase current transformer; 412, residual current transformer; 42, signal input unit; 43, control and protection unit; 431, variable frequency starting button; 432, power frequency startup button; 433, variable frequency control portion; 434, industrial frequency control portion; 44, microcomputerized controller; 5, communication control unit; 6, malfunction indicator lamp.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model hydrogen compressor electric reconstruction control system embodiment is described further.
A kind of hydrogen compressor 3 electric reconstruction control system, comprise three-phase bus 1, frequency converter 2 and the hydrogen compressor 3 of connecting successively, be coupled with the switching of control module in order to the power frequency startup and variable frequency starting that control frequency converter 2 between described frequency converter 2 and hydrogen compressor 3, described control module comprises voltage cell, signal input unit 42, control and protection unit 43, microcomputerized controller 44 and communication control unit 5; Described voltage cell is coupled to three-phase bus 1 in order to detect three-phase bus 1 voltage fault signal and to export to microcomputerized controller 44; Described microcomputerized controller 44 is coupled to control and protection unit 43 in order to receive fault-signal and to export time delayed signal; Described control and protection unit 43 is coupled to hydrogen compressor 3 in order to respond time delayed signal and time delayed turn-off hydrogen compressor 3 power supply; Described control and protection unit 43 also produces operating state signal; Described signal input unit 42 is coupled to microcomputerized controller 44 in order to respond operating state signal and to input to microcomputerized controller 44; Described communication control unit 5 is coupled to microcomputerized controller 44 in order to communicate with one another and to show running status.
As shown in Figure 1, three-phase bus 1 accesses, by killer switch contact QF, connect frequency converter 2, the output of frequency converter 2 connects the second electromagnetic relay switch contact KM2 and is connected with hydrogen compressor 3 with the first electromagnetic relay switch contact KM1, the power frequency startup that the KM1 closing of contact realizes hydrogen compressor 3 runs, and the KM2 closing of contact realizes the converting operation of hydrogen compressor 3.And three-phase bus 1 having threephase current transformer 411 and residual current transformer 412, described threephase current transformer 411 and residual current transformer 412 are all coupled to microcomputerized controller 44 in order to detect current failure.After current detecting on three-phase bus 1 goes out extremely; transducer just by signal transmission to microcomputerized controller 44; microcomputerized controller 44 in the present embodiment is PMC-550J; the power supply of microcomputerized controller 44 is supplied through overcurrent fuse by three-phase bus 1; when electric current is excessive; fuse can play fuse wire, plays the effect of protection microcomputerized controller 44 overcurrent of cutting off the electricity supply.Variable frequency starting button 431SB2 is connected with, power frequency startup button 432SB4, in order to input enabling signal to microcomputerized controller 44 in signal input unit 42.The binding post of simultaneously microcomputerized controller 44 is connected with contact contact switch KA1, KM1, KM2, KA1 of relay, in order to detect the operating state of relay, the closed then power frequency startup of KM1, the closed then variable frequency starting of KM2.The work that contact KA1, KA2 of auxiliary relay close to detect frequency converter 2 is in running status.
As shown in Figure 2, described control and protection unit 43 comprises variable frequency starting button 431, power frequency startup button 432, variable frequency control portion 433 and industrial frequency control portion 434; Described variable frequency starting button 431 is coupled to variable frequency control portion 433 in order to send variable frequency starting signal; Described variable frequency control portion 433 is coupled between hydrogen compressor 3 and frequency converter 2 in order to respond variable frequency starting signal and frequency converter 2 is worked in variable mode; Described power frequency startup button 432 is coupled to industrial frequency control portion 434 in order to send power frequency startup signal; Described industrial frequency control portion 434 is coupled between hydrogen compressor 3 and frequency converter 2 in order to respond power frequency startup signal and frequency converter 2 is worked in power frequency pattern.Scram button is STOP, D01 contact on connected with computer controller 44, D01 contact is normally-closed contact, and D02 contact is for often to open delayed contact, and D03 contact is for often to open delayed contact, the switch S A1 of interlock when circuit ON closes, only press variable frequency starting button 431SB2, frequency converter 2 does not have fault so the KA1 closing of contact, relay coil KM2 is obtained electric, make the KM2 closing of contact on the right side of variable frequency starting button 431SB2 form self-locking, holding circuit is operated in frequency conversion state always.Owing to shaking electric generation, circuit loses power supply instantaneously, the D02 closing of contact time delay disconnect, hydrogen compressor 3 works on due to inertia, when circuit instantaneous power is returned again time due to the D02 closing of contact and time delay disconnect, circuit does not just need again to press variable frequency starting button 431SB2 and has again been communicated with to make relay coil KM2, therefore can realize autoboot, can put the parking accident preventing rolling electrical phenomena from causing simultaneously.
The control circuit of power frequency operation is consistent with the connection of variable frequency control, and equally, just relay switches to KM1, is controlled the access of power frequency switch by relay K M1 for control mode and variable frequency control mode.Microcomputerized controller 44 is also connected with malfunction indicator lamp 6, when frequency converter 2 fault time, relay K A1 obtains electric, KA1 contact is disconnected, then frequency converter 2 working station indicator HY extinguishes, represent frequency converter 2 fault, and when converting operation, converting operation indicator light HR1 lights, when power frequency operation time, power frequency operation indicator light HR2 lights.When there is over-current phenomenon avoidance in whole circuit, the switch contact of short-circuiting device QF being disconnected and realizes protection.
As shown in Figure 3, communication control unit 5 is DCS controller, and described DCS controller and microcomputerized controller 44 communicate to connect in order to status signal transmission, and described DCS controller also communicates to connect with frequency converter 2 to communicate in order to analog signal and transmits.DCS controller is communicated with microcomputerized controller 44 by the communications cable, realizes transmission and the Real-time Feedback of signal.Make whole system safer.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. a hydrogen compressor electric reconstruction control system, comprise three-phase bus, frequency converter and the hydrogen compressor of connecting successively, it is characterized in that: be coupled with control module between described frequency converter and hydrogen compressor in order to control the switching between the power frequency startup of frequency converter and variable frequency starting, described control module comprises voltage cell, control and protection unit and microcomputerized controller;
Described voltage cell is coupled to three-phase bus in order to detect three-phase bus voltage whether fault export fault-signal;
Described microcomputerized controller is coupled to voltage cell to receive fault-signal and to export time delayed signal;
Described control and protection unit is coupled to microcomputerized controller in order to reception delay signal and exports control signal;
Described hydrogen compressor is coupled to control and protection unit in order to reception control signal, and in response to control signal, with time delayed turn-off hydrogen compressor power supply.
2. hydrogen compressor electric reconstruction control system according to claim 1, is characterized in that: described control module also comprises communication control unit and signal input unit;
Described control and protection unit also produces operating state signal;
Described signal input unit is coupled to microcomputerized controller in order to respond operating state signal and operating state signal is inputed to microcomputerized controller;
Described communication control unit is coupled to microcomputerized controller in order to communicate with one another and to show running status.
3. hydrogen compressor electric reconstruction control system according to claim 1, it is characterized in that: described voltage cell comprises threephase current transformer and residual current transformer, described threephase current transformer and residual current transformer are all coupled to microcomputerized controller in order to detect current failure.
4. hydrogen compressor electric reconstruction control system according to claim 1, is characterized in that: described control and protection unit comprises variable frequency starting button, power frequency startup button, variable frequency control portion and industrial frequency control portion;
Described variable frequency starting button is coupled to variable frequency control portion in order to send variable frequency starting signal;
Described variable frequency control portion is coupled between hydrogen compressor and frequency converter in order to respond variable frequency starting signal and frequency converter is worked in variable mode;
Described power frequency startup button is coupled to industrial frequency control portion in order to send power frequency startup signal;
Described industrial frequency control portion is coupled between hydrogen compressor and frequency converter in order to respond power frequency startup signal and frequency converter is worked in power frequency pattern.
5. hydrogen compressor electric reconstruction control system according to claim 2, it is characterized in that: described communication control unit is DCS controller, described DCS controller and microcomputerized controller communicate to connect in order to status signal transmission, and described DCS controller also communicates to connect with frequency converter to communicate in order to analog signal and transmits.
6. hydrogen compressor electric reconstruction control system according to claim 1, is characterized in that: described microcomputerized controller is also coupled with malfunction indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520411479.8U CN204652268U (en) | 2015-06-15 | 2015-06-15 | Hydrogen compressor electric reconstruction control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520411479.8U CN204652268U (en) | 2015-06-15 | 2015-06-15 | Hydrogen compressor electric reconstruction control system |
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| CN204652268U true CN204652268U (en) | 2015-09-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474206A (en) * | 2018-12-30 | 2019-03-15 | 唐山冀东石油机械有限责任公司 | Intelligent Restarter and method after the rolling electricity that beam pumping unit configuration power frequency directly opens |
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2015
- 2015-06-15 CN CN201520411479.8U patent/CN204652268U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474206A (en) * | 2018-12-30 | 2019-03-15 | 唐山冀东石油机械有限责任公司 | Intelligent Restarter and method after the rolling electricity that beam pumping unit configuration power frequency directly opens |
| CN109474206B (en) * | 2018-12-30 | 2024-03-01 | 唐山冀东石油机械有限责任公司 | Intelligent restarting device and method after power-shaking of beam pumping unit configured power frequency direct start |
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Address after: 315204 No. 655 Haitian Road, Ningbo Petrochemical Economic Development Zone, Zhenhai District, Zhejiang, Ningbo, China Patentee after: Zhejiang Zhenyang Development Co., Ltd Address before: 315204 No. 655 Haitian Road, Ningbo Petrochemical Economic Development Zone, Zhenhai District, Zhejiang, Ningbo, China Patentee before: NINGBO OCEANKING CHEMICAL DEVELOPMENT Co.,Ltd. |