CN205725553U - A kind of cold inverter control unit of direct current many liquid peculiar to vessel altogether - Google Patents
A kind of cold inverter control unit of direct current many liquid peculiar to vessel altogether Download PDFInfo
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- CN205725553U CN205725553U CN201620116654.5U CN201620116654U CN205725553U CN 205725553 U CN205725553 U CN 205725553U CN 201620116654 U CN201620116654 U CN 201620116654U CN 205725553 U CN205725553 U CN 205725553U
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Abstract
The utility model discloses a kind of cold inverter control unit of direct current many liquid peculiar to vessel altogether, including multiple cold inverter of liquid being connected to common DC bus, the cold inverter of each liquid provides three-phase alternating-current supply to a motor；The cold inverter of one of them liquid provides three-phase alternating-current supply also by sinusoidal filter to cooling back installation, and cooling back installation is connected by liquid feeding pipeline, the liquid cooling apparatus of liquid back pipe road inverter cold with each liquid；Cooling back installation and the cold inverter of each liquid are connected with Surveillance center communication by network respectively.The utility model can reduce the quantity of system rectifying installation significantly, significantly cuts down the cost of system and is taken up space；Achieve the network remote Centralized Monitoring to circulating cooling system, the cold inverter of multichannel liquid, hardware quantity and investment can be saved, save mounting cost；Achieve the insulating monitoring to each liquid cold inverter distribution loop, it is ensured that marine vessel power distribution system safe and reliable.
Description
Technical field
The utility model relates to boats and ships VFC field, particularly relates to a kind of cold inverter control unit of direct current many liquid peculiar to vessel altogether.
Background technology
With the popularization and application considering and combining state-of-the-art technology to boats and ships economy, frequency-changing control system is widely used in modern project ship domain.In traditional Electrical system for a ship, AC power can be directly to the main circuit power supply of RHVC.This power supply mode has that equipment volume is little, the advantage of simple in construction; but the input direct voltage of frequency conversion system is obtained by irreversible diode rectification; when motor produces feedback, the feedback of this energy causes busbar voltage to raise, and the phenomenon shut down, frequency conversion is tripped can be caused frequently to occur.
Traditional frequency converter uses this locality control, carry out the control of start-stop, crawl, acceleration and deceleration with frequency converter keyboard or input and output terminal, easy to use, technically easily realize, but when multiple stage frequency converter individually controls, each frequency converter will configure corresponding input and output point, is inevitably generated substantial amounts of installation work amount, increase difficulty also to system maintenance from now on and failture evacuation simultaneously, and the communication with host computer and monitoring cannot be realized.
Utility model content
For the deficiencies in the prior art, the technical problems to be solved in the utility model is to provide the one cold inverter control unit of direct current many liquid peculiar to vessel altogether, realize the cutting of rectification unit, and the centralized Control of the heat radiation of multichannel liquid cold inverter and multichannel liquid cold invertor operation state.
For solving above-mentioned technical problem, the utility model by the following technical solutions:
A kind of cold inverter control unit of direct current many liquid peculiar to vessel altogether, including multiple cold inverter of liquid being connected to common DC bus, the cold inverter of each liquid provides three-phase alternating-current supply to a motor；The cold inverter of one of them liquid provides three-phase alternating-current supply also by sinusoidal filter to cooling back installation, and described cooling back installation is connected by liquid feeding pipeline, the liquid cooling apparatus of liquid back pipe road inverter cold with each liquid；Described cooling back installation and the cold inverter of each liquid are connected with Surveillance center communication by network respectively.
Described liquid cooling apparatus uses cooled plate.
Described network uses RS485 bus network.
The cold inverter of each liquid includes an Inverter control module, Inverter control module includes the motor control panel that the inversion unit being connected with motor is connected with inversion unit, inversion unit is connected to motor control panel by signal acquisition module, and motor control panel is also connected with display operating panel.
Described Motor Control panel is connected with Surveillance center communication by RS485 bus network.
The cold inverter of each liquid is connected to common DC bus by pre-charge circuit.
Pre-charge circuit includes charging resistor and contactor, and described charging resistor is in parallel with the normally opened contact of contactor, and described contactor inverter cold with liquid is connected.
It is connected on the circuit of common DC bus be additionally provided with breaker at pre-charge circuit.
The above-mentioned altogether cold inverter control unit of direct current many liquid peculiar to vessel, also includes the insulation monitoring and warning device being connected with Surveillance center communication, and described insulation monitoring and warning device is connected with the DC leakage flow sensor being arranged on each liquid cold inverter distribution loop.
The beneficial effects of the utility model: the 1st, use dc bus to connect inverter, the quantity of system rectifying installation can be reduced significantly, and the energy making some motor feedback is supplied to other motor by dc bus and uses, improve the utilization rate of electric energy, significantly cut down the cost of system and taken up space；2nd, apply in the heat radiation to inverter by cold for liquid, utilize the heat radiation of the cold inverter of Surveillance center's centralized Control liquid and the running status of the cold inverter of multichannel liquid, achieve the network remote Centralized Monitoring to circulating cooling system, the cold inverter of multichannel liquid, hardware quantity and investment can be saved, save mounting cost, make user have the system integration initiative of height, improve accuracy and the reliability of system；3rd, pass through pre-charge circuit, improve equipment operational reliability, reduce plant maintenance amount and occupation area of equipment；4th, insulation monitoring and warning device and DC leakage flow sensor are passed through, it is achieved the insulating monitoring to each liquid cold inverter distribution loop, it is ensured that marine vessel power distribution system safe and reliable.
Brief description
Fig. 1 is the circuit structure theory diagram of Inverter control module of the present utility model.
Fig. 2 is control principle drawing of the present utility model.
Fig. 3 is the local operator interface figure of cooling back installation of the present utility model.
Fig. 4 is the cold fundamental diagram of cooling back installation liquid of the present utility model.
Detailed description of the invention
With detailed description of the invention, the utility model is described in further detail below in conjunction with the accompanying drawings.
See Fig. 2, the utility model provides the one cold inverter control unit of direct current many liquid peculiar to vessel altogether, including the cold inverter of multiple liquid (quantity of the cold inverter of liquid can as required depending on, can be one, two or more), the cold inverter of each liquid is connected on common DC bus L+, L-by L1, L2 two-terminal, and the cold inverter of each liquid provides three-phase alternating-current supply to a motor.
One of cold inverter of multiple liquid cold inverter of liquid is utilized to provide three-phase alternating-current supply by sinusoidal filter to cooling back installation, cooling back installation is connected by liquid feeding pipeline, the liquid cooling apparatus of liquid back pipe road inverter cold with each liquid, and liquid cooling apparatus uses cooled plate.Cooling back installation and the cold inverter of each liquid are connected with Surveillance center communication by RS485 bus network.
The composition of cooling back installation and the operation principle that cold inverter dispels the heat to liquid are as follows:
Cooling back installation uses compressor cooling mode to produce coolant, and provided circulation power by circulating pump, it is allowed between inverter and cooling back installation circulation, thus takes away the heat of inverter internal heat generation device, it is ensured that equipment works under a good environment.Cooling back installation is mainly made up of with refrigeration feed flow region control area, sees Fig. 4, and feed flow region of wherein freezing comprises the devices such as shell tube condenser, compressor, water circulating pump, fluid storage tank and evaporimeter.After cooling back installation receives power-on command, supplying refrigerated sea water by the fire pump on boats and ships to the cold side of cooling back installation, shell tube condenser carries out heat exchange with outside seawater, completes seawater outer loop.Kind of refrigeration cycle within cooling back installation is to be discharged the Freon gas of HTHP by compressor, enter in water-cooled shell and tube condenser and carry out heat exchange with outer circulation seawater, heat released by cold-producing medium, it is cooled to the freon liquid of cryogenic high pressure, freon liquid passes through device for drying and filtering, fluorine magnetic valve, enters expansion valve reducing pressure by regulating flow, becomes freon gas-liquid biphasic mixture, heat absorption in evaporimeter becomes the freon gas of low-temp low-pressure and returns to compressor, forms reciprocation cycle.In coolant, the anti-icing fluid of circulation-supplied is extracted out from fluid storage tank by stainless steel pump, flow through evaporimeter and carry out heat exchange with the freon that compressor is discharged, through being arranged on the heating surface of inverter in cooled plate after cooling, absorbing heat and reducing inverter surface temperature, coolant temperature returns fluid storage tank in cooling back installation after increasing.Again through water pump output, flow through evaporimeter, return fluid storage tank after inverter.So circulation, completes circulatory system refrigerating function.
Cooling back installation is connected by the delivery port of the feed liquid pipeline of liquid back pipe road inverter cold with each liquid.Inverter is fastened directly in one or more cooled plate, cooled plate is made up of the high aluminium sheet of heat-transfer capability or copper coin, each cooled plate arranges an inlet and a liquid outlet, coolant divides input pipe to flow in cooled plate by feed flow primary input pipe through feed flow, between inverter to coolant, thus provide a thermal resistance heat flow path little as far as possible, absorb the heat that inverter sends, play the effect of heat radiation.
Its control area of cooling back installation uses remotely operation to combine with local operation.Seeing Fig. 3, local operation occurs mainly for the situation tackling some non-anticipations, and unit arranges contingency mode, and when this pattern, Automatic Control Strategy ceases to be in force automatically, and unit changes into entirely manually operated.When cooling back installation is in long-range mode of operation, this device receives the linkage signal of upper control, carries out auto-open-close machine；After device is started shooting by teleinstruction, entering fully automatic operation state, after device receives the shutdown command remotely sending, after necessary protection act, device is shut down and is reentered holding state.Simultaneously, cooling back installation can report the function of the cold duty of whole liquid and fault message and for analog quantity parameters such as liquid temp, flow, pressure by RS485 bus network to Surveillance center in real time, and the cold inverter of each liquid reports the information such as cooling failure by RS485 bus network to Surveillance center.
Owing to it is frequently necessary to switch on and off the cold inverter of liquid when debugging and maintenance, so the cold inverter of each liquid is connected to common DC bus preferably by pre-charge circuit.Otherwise, after the cold inverter power-off of liquid, dc bus cannot be directly accessed again, it is necessary to power distribution cabinet is stopped, re-powering after all inverter power-off.Pre-charge circuit includes charging resistor R and contactor, and charging resistor R is in parallel with the normally opened contact of contactor KM, and contactor KM is cold with liquid, and inverter is connected.It is connected on the circuit of common DC bus be additionally provided with circuit breaker Q F at pre-charge circuit.As in figure 2 it is shown, after circuit breaker Q F closes, charge to the cold inverter of each liquid through charging resistor R, after charging terminates, liquid cold inverter output control signal makes contactor KM adhesive, completes charging process control.Arranging busbar voltage precharge link in system delays busbar voltage to set up process, prevent from impacting on common DC bus circuit damage power switching device and bus, cutting rectification unit, can be applicable to compared with wide DC input voltage range, decrease the requirement to network of ship quality, thus improve equipment operational reliability, the equipment that decreases installs maintenance and occupation area of equipment, has saved equipment cost.
See Fig. 1, the cold inverter of each liquid includes an Inverter control module, Inverter control module includes the motor control panel that the inversion unit being connected with motor is connected with inversion unit, inversion unit is connected to motor control panel by signal acquisition module, motor control panel is also connected with display operating panel respectively, is connected by RS485 bus network communication with Surveillance center.Local can send the local operation that instruction realizes the cold inverter to liquid by display operating panel, can remotely send, by Surveillance center and RS485 bus, the long-range operation that instruction realizes the cold inverter to liquid.The running parameters such as the electric current of motor, torque, fault of converter protection information are sent to motor control panel by signal acquisition module; while display by display operating panel, real-time diagnosis is carried out to the various operating modes of load; discovery fault in time; and fault message is sent to Surveillance center by RS485 bus, report to the police in Surveillance center.Surveillance center can timing or manual send telemetry command to the cold inverter of each liquid, after the cold inverter of each liquid receives telemetry command, immediately begin to gather all service datas of motor, and be sent to Surveillance center by RS485 bus network after being processed to.Cold inverter couples together with liquid by Surveillance center to make full use of the communication function of RS485 bussing technique, to liquid, cold inverter carries out networking control, constitute one to stablize, hardware environment convenient to operate, not only can effectively reduce hardware spending and trouble point, and it is easy to the smooth expansion of inverter group, with the inverter increasing number of control, its cost advantage and control advantage are just all the more obvious.
The utility model also includes the insulation monitoring and warning device being connected with Surveillance center communication.For realizing carrying out insulating monitoring to each liquid cold inverter distribution loop being connected to common DC bus, each liquid cold inverter distribution loop is configured with contactless DC leakage flow sensor, insulation monitoring and warning device is connected with each DC leakage flow sensor, by DC leakage current Sensor monitoring DC leakage current, busbar voltage, positive pole voltage-to-ground and negative pole voltage-to-ground etc., and each pole state of insulation is judged by setting valve, if it is determined that decline or earth fault for insulaion resistance, sounding visual alarm, display branch road number, positive pole insulating resistance value, negative insulation resistance value.The state of insulation of each liquid cold inverter distribution loop can be monitored by Surveillance center by insulation monitoring and warning device.
The utility model achieves the networked control management of the cold inverter to liquid, the cooling condition of the cold inverter of each liquid can be monitored by Surveillance center, running parameter, the various operating modes of real-time diagnosis load such as the voltage of collection load, electric current, power factor, and monitor the state of insulation of each liquid cold inverter distribution loop, the circulating cooling radiating effect of the cold inverter of liquid, coolant cold flow, and the information such as cooling circuit whether leakage, so that it is guaranteed that equipment is properly functioning.
Claims (9)
1. one kind is total to the cold inverter control unit of direct current many liquid peculiar to vessel, it is characterised in that: including multiple cold inverter of liquid being connected to common DC bus, the cold inverter of each liquid provides three-phase alternating-current supply to a motor；The cold inverter of one of them liquid provides three-phase alternating-current supply also by sinusoidal filter to cooling back installation, and described cooling back installation is connected by liquid feeding pipeline, the liquid cooling apparatus of liquid back pipe road inverter cold with each liquid；Described cooling back installation and the cold inverter of each liquid are connected with Surveillance center communication by network respectively.
2. the cold inverter control unit of direct current many liquid peculiar to vessel altogether according to claim 1, it is characterised in that: described liquid cooling apparatus uses cooled plate.
3. the cold inverter control unit of direct current many liquid peculiar to vessel altogether according to claim 1, it is characterised in that: described network uses RS485 bus network.
4. the cold inverter control unit of direct current many liquid peculiar to vessel altogether according to claim 1, it is characterized in that: the cold inverter of each liquid includes an Inverter control module, Inverter control module includes the motor control panel that the inversion unit being connected with motor is connected with inversion unit, inversion unit is connected to motor control panel by signal acquisition module, and motor control panel is also connected with display operating panel.
5. the altogether cold inverter control unit of direct current many liquid peculiar to vessel according to claim 4, it is characterised in that: described Motor Control panel is connected with Surveillance center communication by RS485 bus network.
6. the cold inverter control unit of direct current many liquid peculiar to vessel altogether according to claim 1, it is characterised in that: the cold inverter of each liquid is connected to common DC bus by pre-charge circuit.
7. the cold inverter control unit of direct current many liquid peculiar to vessel altogether according to claim 6, it is characterised in that: pre-charge circuit includes charging resistor and contactor, and described charging resistor is in parallel with the normally opened contact of contactor, and described contactor inverter cold with liquid is connected.
8. the cold inverter control unit of direct current many liquid peculiar to vessel altogether according to claim 6, it is characterised in that: it is connected on the circuit of common DC bus be additionally provided with breaker at pre-charge circuit.
9. the cold inverter control unit of direct current many liquid peculiar to vessel altogether according to claim 1, it is characterized in that: also including the insulation monitoring and warning device being connected with Surveillance center communication, described insulation monitoring and warning device is connected with the DC leakage flow sensor being arranged on each liquid cold inverter distribution loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620116654.5U CN205725553U (en) | 2016-02-05 | 2016-02-05 | A kind of cold inverter control unit of direct current many liquid peculiar to vessel altogether |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620116654.5U CN205725553U (en) | 2016-02-05 | 2016-02-05 | A kind of cold inverter control unit of direct current many liquid peculiar to vessel altogether |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205725553U true CN205725553U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620116654.5U Expired - Fee Related CN205725553U (en) | 2016-02-05 | 2016-02-05 | A kind of cold inverter control unit of direct current many liquid peculiar to vessel altogether |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205725553U (en) |
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2016
- 2016-02-05 CN CN201620116654.5U patent/CN205725553U/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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170824 Address after: 450001 No. 311 science Avenue, hi tech Zone, Henan, Zhengzhou Patentee after: HAIWEI ZHENGZHOU HIGH TECHNOLOGY Co.,Ltd. Address before: Beijing Guangzhou road 450015 Henan city of Zhengzhou province No. 126 Patentee before: 713TH Research Institute OF CSIC |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20220205 |
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| CF01 | Termination of patent right due to non-payment of annual fee |