CN2575736Y - USB and AUDIO pre-interface plate - Google Patents
USB and AUDIO pre-interface plate Download PDFInfo
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- CN2575736Y CN2575736Y CN 02281802 CN02281802U CN2575736Y CN 2575736 Y CN2575736 Y CN 2575736Y CN 02281802 CN02281802 CN 02281802 CN 02281802 U CN02281802 U CN 02281802U CN 2575736 Y CN2575736 Y CN 2575736Y
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Abstract
The utility model relates to a full automatic power supply controller of base oil electric dehydration, which relates to an automatic control power supply equipment. The utility model is characterized in that an output circuit is provided with a voltage sensor, a current sensor and a plurality of reactor coils which are mutually connected in series, an automatic regulating circuit is composed of a programmable logic controller (PLC), an analog-digital conversion unit, and a coil of an alternating current contactor, and each reactor can be orderly coupled in or out an output line according to load variation. The utility model has the advantages that because the utility model uses a plurality of reactors to hierarchically regulate, the regulative precision is high, and protective capability is good under the overloaded condition of electric equipment. When the utility model can ensure that the electric load of the electric equipment varies in a large range, the controller can have a high work efficiency, and the operating status of the output reactance is controlled by program and can be changed in a proper time. The utility model can be connected with a computer to form an automatic control system. The controller is particularly suitable for supply equipment of the high voltage generator, and the process of the base oil electric dehydration of an oil field.
Description
Technical field
The novel electric supply installation that relates to a kind of automatic control of this use.
Background technology
In crude oil electrical dewatering technological process, because entering the height of water-oil interface in crude oil water containing, saliferous and the water knockout in the water knockout often changes, cause the electric load of high-tension transformer to take place to change significantly, the time situation generation of overload and short circuit arranged.For guaranteeing the safety of electrical dewatering system, must take the control measure of effectively powering.The crude oil electric dewatering power-supply controller of present oil field electrical dewatering rig-site utilization; though can satisfy substantially in overload, overvoltage, overcurrent protection ability to consumer; also can be implemented in regulation voltage, electric current, the variable requirement of output power automatically in the equipment running process; but its control circuit all adopts various relays and resistance, electric capacity to connect by lead to be constituted; circuit complexity, element are many; in use damage easily; its state of a control is single, automaticity is low, with the computer interface difficulty; use inconvenience, be difficult to realize automatic control.
The utility model content
The purpose of this utility model provides a kind of full-automatic crude oil electric dewatering power-supply controller, and it has the programmable control function, can be connected with computing machine easily, can realize Flexible Control, automaticity height, uses reliable.
The utility model technical solution is achieved in that a kind of full-automatic crude oil electric dewatering power-supply controller, be connected to form by casing and the power control circuit, the output circuit that are installed in the casing, its special character is: (1) power control circuit is connected with auto-adjusting circuit, output circuit respectively.(2) current feedback circuit, voltage feedback circuit are connected with auto-adjusting circuit with output circuit respectively.(3) auto-adjusting circuit is connected with output circuit.
In above-mentioned technical solution, its special character also is, (1) reconciling circuit automatically is connected to form by programmable controller and AD conversion unit, one end of N A.C. contactor is connected with the contact of programmable controller PLC path 10 CH respectively, its other end interconnects the back and is connected with power supply contact L13, the end of start button SB1, stop button SB2 and reset button SB3 connects mutually with the contact of passage 00CH respectively, and their other end interconnects the back and is connected with the negative pole of programmable controller.The output terminal of isolating transformer TC is connected with contact L1, the L2/N of passage 00CH respectively, and coil one end and the contact 200 of A.C. contactor M1 link.(2) output circuit is connected to form by the contact of coil XL and N A.C. contactor, and an end of ac contactor contact is connected with the tap of coil XL respectively, and the other end all is connected in the contact L31 of power supply.(3) current sensor IS is installed on the lead of output circuit, its positive and negative electrode is connected with contact I3+, the COM1 of AD conversion unit A/D respectively, voltage sensor VS is installed between two output leads, and its positive and negative electrode is connected with contact V1+, the COM1 of AD conversion unit A/D respectively.
The utility model has the advantages that (1) owing to adopt a plurality of reactance coil classifications to regulate, therefore higher degree of regulation is arranged; (2) owing to adopt a plurality of reactance coils, it is bigger that the total inductance amount after all connecting can design, and consumer is had the better protect ability under the situation of overload; (3) owing to be provided with lower current control, can be timely reduce the inductance value that seals in output circuit with the reduction of output current, reduce unnecessary inductive drop, thereby the electric load that can guarantee consumer is when changing in the larger context, total system all is in higher work efficiency.(4) owing to can be connected with computing machine easily, loading routine is as required adjusted or is changed control to output circuit.
Description of drawings
Accompanying drawing 1 is a frame assumption diagram of the present utility model.
Accompanying drawing 2 is circuit structure diagrams of the present utility model.
Embodiment: main power switch QF is installed in the input end of power supply, contact L21, L23 on the power circuit is connected the input end of isolating transformer TC respectively by fuse FU1, FU2, and be parallel with pilot lamp HA7 at its input end two ends, between contact L21, the L23 on the incoming line, voltage table V1 is installed.Programmable controller PLC selects CPM1A-30CDR-A for use, its contact 000-011 is the 00CH passage, contact 100-105 is the 01CH passage, contact 200-207 is the 10CH passage, contact 300-304 is the 11CH passage, all contact COM link together and are common junction, are connected with power supply contact L11 by fuse FU3.The end of start button SB1 is connected with contact 000, and stop button SB2 is connected with contact 001, and reset button SB3 is connected with contact 002, and their other end interconnects, and is connected with the negative pole of programmable controller PLC.Coil M1 one M6 one end of A.C. contactor is connected with contact 200,202-206 respectively, and the other end interconnects, and is connected with power supply contact L13 and coil M1-M6 is parallel with pilot lamp HA1-HA6 respectively by lead.The end of alarm bell FA is connected with contact 201, and the end of pilot lamp HA8, HA9 is connected with contact 300,301 respectively, and their other end all is connected with contact L13.The A/D interface 2 of programmable controller PLC is connected with AD conversion unit A/D by lead.As required, can be connected with computing machine by programmable device socket 1.
The end of coil XL is connected on the contact L31 of output lead by the contact MK2 of A.C. contactor, the other end is connected with contact L32, there are 4 taps the centre of coil XL, coil XL is divided into 5 sections, promptly form 5 reactors, 4 taps of coil XL are connected on the contact L31 of output lead by the contact MK3-MK6 of A.C. contactor respectively, the contact that between contact L31, L32, has connected 5 A.C. contactors altogether, therefore be N=5 in the present embodiment, according to actual condition, N can choose greater than 5 or less than 5.Current sensor IS is installed on the output lead, and its positive and negative electrode is connected by contact I3+, the contact COM1 of lead and AD conversion unit A/D respectively, and contact V3+ is connected with I3+.Between contact L22, the L32 of output lead voltage sensor VS is installed, its positive and negative electrode is connected by contact V1+, the COM1 of lead and AD conversion unit A/D respectively, and contact COM1 is a common junction.
In the present embodiment, reometer A also is installed in output circuit, the end of the coil M7 of A.C. contactor is connected with contact 303, the other end is connected in contact L13, water-oil interface instrument 3 is connected by contact I4+, the COM1 of lead 604,605 and AD conversion unit A/D, the signal that water-oil interface instrument 3 records is controlled electronic water drain valve and is discharged water by AD conversion unit A/D, ac contactor coil M7.
Press start button SB1,5 whole places in circuit of reactor, this moment, Voltage Feedback and current feedback signal were delivered to analog-converted unit A/D, by programmable controller PLC voltage, current signal are carried out the mathematics arithmetic, control the injected volume of reactor according to the variation of load voltage, electric current in the mode of program, because bearing power is changing, output voltage, electric current are also changing thereupon, by what of programmable controller PLC programmed control reactor injected volume, reach the purpose of automatic regulating load power.
In the said process, feeding back used voltage sensor VS, current sensor IS and AD conversion unit A/D samples to voltage, current signal, send voltage, current data to compare for the setting value among programmable controller PLC and the PLC by the expansion oral instructions of programmable controller PLC, change the injected volume of reactor with the break-make of this fiducial value PLC controlling output circuit contactor, make output loop satisfy load request all the time, increase work efficiency.
In actual design, reactor quantity determines that according to the required control accuracy of consumer quantity is many more, and promptly N numerical value is big more, and degree of regulation is high more.All the total inductance amount after the reactance coils series connection is determined according to the maximum current that consumer allows, and after whole reactance coils series connection, under output terminal R short-circuit conditions, output current is not more than 1/3rd of maximum current that consumer allows and is advisable.
Claims (2)
1. full-automatic crude oil electric dewatering power-supply controller is connected to form by casing and the power control circuit, the output circuit that are installed in the casing, it is characterized in that:
1. power control circuit is connected with auto-adjusting circuit, output circuit respectively;
2. current feedback circuit, voltage feedback circuit are connected with auto-adjusting circuit with output circuit respectively;
3. auto-adjusting circuit is connected with output circuit.
2. full-automatic crude oil electric dewatering power-supply controller according to claim 1 is characterized in that,
1. reconciling circuit automatically is connected to form by programmable controller (PCL) and AD conversion unit (A/D), one end of N A.C. contactor is connected with the contact (202-206) of programmable controller (PLC) passage (10CH) respectively, its other end interconnects the back and is connected with power supply contact (L13), start button (SB1), one end of stop button (SB2) and reset button (SB3) respectively and the contact (000-002) of passage (00CH) link, their other end interconnects the back and is connected with the negative pole of programmable controller (PLC), the output terminal of isolating transformer (TC) respectively and contact (the L1 of passage (00CH), L2/N) be connected, coil one end and the contact (200) of A.C. contactor (M1) link;
2. output circuit is connected to form by the contact (MK2-MK6) of coil (XL) and N A.C. contactor, and an end of ac contactor contact is connected with the tap of coil (XL) respectively, and the other end interconnects the back and is connected with the contact L31 of power supply;
3. current sensor (IS) is installed on the lead of output circuit, its positive and negative electrode is connected with the contact (I3+, COM1) of AD conversion unit A/D respectively, voltage sensor (VS) is installed between two output leads, and its positive and negative electrode is connected with the contact (V1+, COM1) of AD conversion unit A/D respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02281802 CN2575736Y (en) | 2002-10-18 | 2002-10-18 | USB and AUDIO pre-interface plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02281802 CN2575736Y (en) | 2002-10-18 | 2002-10-18 | USB and AUDIO pre-interface plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2575736Y true CN2575736Y (en) | 2003-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02281802 Expired - Fee Related CN2575736Y (en) | 2002-10-18 | 2002-10-18 | USB and AUDIO pre-interface plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2575736Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236441B (en) * | 2007-01-29 | 2011-09-21 | 中兴通讯股份有限公司 | Circuit for improving power supply load regulation rate |
-
2002
- 2002-10-18 CN CN 02281802 patent/CN2575736Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236441B (en) * | 2007-01-29 | 2011-09-21 | 中兴通讯股份有限公司 | Circuit for improving power supply load regulation rate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |