CN1295855C - Microcomputer control automatic pressure regulating device - Google Patents
Microcomputer control automatic pressure regulating device Download PDFInfo
- Publication number
- CN1295855C CN1295855C CNB2005100862748A CN200510086274A CN1295855C CN 1295855 C CN1295855 C CN 1295855C CN B2005100862748 A CNB2005100862748 A CN B2005100862748A CN 200510086274 A CN200510086274 A CN 200510086274A CN 1295855 C CN1295855 C CN 1295855C
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- CN
- China
- Prior art keywords
- secondary winding
- microcomputer control
- regulating device
- pressure regulating
- tap
- Prior art date
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention relates to a microcomputer-controlled automatic voltage regulation device which comprises a three-phase booster transformer and a microcomputer control circuit, wherein a secondary winding of the three-phase booster transformer is provided with a plurality of taps, each phase of the secondary winding is connected with a transitional resistor, and each tap of the secondary winding is connected with both ends of the transitional resistor through two contact switches. In the process of the voltage regulation, namely in the process of switch from one tap to another tap, the transitional resistors are accessed in, so that the voltage regulation without power cut is realized, meanwhile, the winding and the contacts are prevented from being burnt, and the underground production can not be affected by the voltage regulation.
Description
Technical field
The present invention relates to the power supply technique in colliery, be specifically related to a kind of microcomputer control automatic pressure regulating device.
Background technology
Present domestic most local mine low pressure are underground power supply used, because circuit is long, the loss of voltage is big, cause electromechanical equipment to be difficult to start, maybe can not run well, even burn out motor again and again, the transformer secondary winding is provided with several taps among the utility model patent ZL972510591 " system controlled by computer boost automatically spacer assembly ", each tap connects load by switch contact respectively, by the closure of each switch contact of microcomputer automatic control, this patent has solved the problem of automatic Regulation, but still there is bigger defective in this patent, shown in Figure of description 1, the contacts of contactor K switch
1K
2K
3K
4K
5Any two contacts can not be closed simultaneously, for example K
1With K
2All closed, at K
1K
2And form short circuit between winding, can produce very big short circuit current, burn out winding and contact K
1K
2So can only disconnect closed contact during pressure regulation earlier, the pressure regulation of cutting off the power supply promptly can only be accomplished in closed again another contact, when pressure regulation, all production equipments of down-hole, as: drag conveyor, belt conveyor, water pump, winch, coal-winning machine etc. all can quit work because of outage, then, the workpeople often wants the far distance of walking to start equipment by platform, this not only brings very big influence to downhole production, also has many potential safety hazards simultaneously, causes this patent almost to lose practical value.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming, a kind of microcomputer control automatic pressure regulating device of the pressure regulation that realizes not cutting off the power supply is provided.
Microcomputer control automatic pressure regulating device of the present invention, comprise three-phase voltage increasing transformer and microcomputer control circuit, described three-phase voltage increasing transformer secondary winding is provided with some taps, described secondary winding is every to be connected to a transition resistance mutually respectively, and each tap of described secondary winding is connected with the two ends of described transition resistance by two contact switchs respectively.
Microcomputer control automatic pressure regulating device of the present invention is worked as K
iWhen closed, on the low side if microcomputer detects voltage, with K
I-1Behind the closed access transition resistance, disconnect K
i, and then first closed K
I-2, disconnect K again
I-1, promptly from a tapping to the process of another tap owing to inserted transition resistance, when having realized not cutting off the power supply pressure regulation, avoided burning out winding and contact, and owing to realized not cutting off the power supply pressure regulation, downhole production can not be subjected to the influence of pressure regulation fully.
Description of drawings
Fig. 1 is prior art system controlled by computer boost the automatically three-phase transformer and the switch contact control circuit figure of spacer assembly;
Fig. 2 is the three-phase transformer and the switch contact control circuit figure of microcomputer control automatic pressure regulating device of the present invention.
Embodiment
Be described in detail below in conjunction with the specific embodiment of accompanying drawing invention.
Referring to accompanying drawing 2, three-phase transformer winding A, B, a C connect three phase mains, and the end of secondary winding a, b, c is taken over respectively and crossed resistance R
a, R
b, R
c, the tap of secondary winding all connects the two ends of transition resistance respectively by two contact switchs, and each contact switch is by its closure of microcomputer automatic control.Wherein, contact switch K
1Output voltage maximum when closed, contact switch K
9Output voltage minimum when closed.
Concrete voltage regulating mode is as follows: work as K
iWhen closed, on the low side if microcomputer detects voltage, with K
I-1Behind the closed access transition resistance, disconnect K
i, and then first closed K
I-2, disconnect K again
I-1Finish a pressure regulation.For example: work as K
7When closed, on the low side if microcomputer detects voltage, with K
6Behind the closed access transition resistance, disconnect K
7, and then first closed K
5, disconnect K again
6
Microcomputer control automatic pressure regulating device of the present invention is in the pressure regulation process, promptly from a tapping to the process of another tap owing to inserted transition resistance, when having realized not cutting off the power supply pressure regulation, winding and contact have been avoided burning out, and owing to realized not cutting off the power supply pressure regulation, downhole production can not be subjected to the influence of pressure regulation fully, this has just improved the production efficiency of down-hole to a certain extent, simultaneously also reduced potential safety hazard, made microcomputer control automatic pressure regulating device of the present invention have bigger practical value.
Though preferred embodiment is described in detail and illustrates that the present invention is not limited thereto.Should be known in that those skilled in the art can carry out numerous modifications and variations under the condition that does not deviate from spirit of the present invention and principle, and do not break away from it by protection range that claims limited.
Claims (1)
1. microcomputer control automatic pressure regulating device, comprise three-phase voltage increasing transformer and microcomputer control circuit, described three-phase voltage increasing transformer secondary winding is provided with some taps, it is characterized in that: described secondary winding is every to be connected to a transition resistance mutually respectively, and each tap of described secondary winding is connected with the two ends of described transition resistance by two contact switchs respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100862748A CN1295855C (en) | 2005-08-23 | 2005-08-23 | Microcomputer control automatic pressure regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100862748A CN1295855C (en) | 2005-08-23 | 2005-08-23 | Microcomputer control automatic pressure regulating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1731662A CN1731662A (en) | 2006-02-08 |
| CN1295855C true CN1295855C (en) | 2007-01-17 |
Family
ID=35963976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100862748A Expired - Fee Related CN1295855C (en) | 2005-08-23 | 2005-08-23 | Microcomputer control automatic pressure regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1295855C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108115A (en) * | 1986-12-01 | 1988-06-15 | 胡亨华 | A kind of automatic AC voltage regulator with switch voltage compensation |
| CN2186435Y (en) * | 1993-07-21 | 1994-12-28 | 刘恒文 | Load voltage regulating device of active bridge distribution transformer |
| CN2314511Y (en) * | 1997-12-02 | 1999-04-14 | 王振民 | Computer controlled automatic voltage step-up separating device |
| CN1152466C (en) * | 2002-05-14 | 2004-06-02 | 何宪瑞 | Non-stop continuous stepped AC voltage regulator |
-
2005
- 2005-08-23 CN CNB2005100862748A patent/CN1295855C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108115A (en) * | 1986-12-01 | 1988-06-15 | 胡亨华 | A kind of automatic AC voltage regulator with switch voltage compensation |
| CN2186435Y (en) * | 1993-07-21 | 1994-12-28 | 刘恒文 | Load voltage regulating device of active bridge distribution transformer |
| CN2314511Y (en) * | 1997-12-02 | 1999-04-14 | 王振民 | Computer controlled automatic voltage step-up separating device |
| CN1152466C (en) * | 2002-05-14 | 2004-06-02 | 何宪瑞 | Non-stop continuous stepped AC voltage regulator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1731662A (en) | 2006-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070117 Termination date: 20170823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |