CN203430753U - Oil pump circuit of coal gas draught fan - Google Patents
Oil pump circuit of coal gas draught fan Download PDFInfo
- Publication number
- CN203430753U CN203430753U CN201320489722.9U CN201320489722U CN203430753U CN 203430753 U CN203430753 U CN 203430753U CN 201320489722 U CN201320489722 U CN 201320489722U CN 203430753 U CN203430753 U CN 203430753U
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- CN
- China
- Prior art keywords
- coil
- contactor
- oil pump
- pressure signal
- transfer relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an oil pump circuit of a coal gas draught fan. A first oil pump motor is controlled by a contactor KM1, and a coil of a first switching relay KA1 is connected with a coil branch of the contactor KM1 in parallel; a second oil pump motor is controlled by a contactor KM2, and a coil of a second switching relay KA2 is connected with a coil branch of the contactor KM2; two ends of the coil branch of the contactor KM1 is connected with an oil pressure signal branch in parallel; the oil pressure signal branch comprises an oil pressure signal normally-opened contact Y and a coil of an intermediate relay KA3 which are connected in series, and a normally-opened contact of the intermediate relay KA3 is respectively connected with the coil of the first switching relay KA1 and the coil of the second switching relay KA2 in series; double rows of three-position rotary switches LA1 are respectively connected among the coil of the first switching relay KA1, the coil of the intermediate relay KA3, the oil pressure signal normally-opened contact Y and a stop button SB3 and connected with the coil of the second switching relay KA2 in series. The oil pump of circuit coal gas draught fan can realize mutual standby application of two oil pumps.
Description
Technical field
The utility model relates to a kind of oil pump circuit, is particularly suitable for gas fan oil pump and uses.
Background technique
Two oil pumps of gas fan adopt single power supply, and one is main oil pump, another auxiliary oil pump.Such oil pump circuit has two drawbacks, and the one, when power network fluctuation, easily make main oil pump stop, and auxiliary oil pump cannot self-starting.The 2nd, in fan operation process, be main oil pump easily makes equipment fatigue damage in work always, and auxiliary oil pump only puts into operation at the main oil pump Shi Caihui that breaks down, and cannot realize the standby each other of two oil pumps.As shown in the figure.
Summary of the invention
In order to overcome the shortcoming of prior art, the utility model provides a kind of gas fan oil pump circuit, and it is simple in structure, can realize the standby each other of two oil pumps.
The technical scheme in the invention for solving the technical problem is: Oil pump electrical machinery is controlled by contactor KM1, the coil of contactor KM1 is connected in series with stop button SB1, start button SB2, fus FU1 and thermorelay FR1, the coil of contactor KM1 has self-locking and operation and stops indicating GLR1, GLG1, and the coil of the first transfer relay KA1 and contactor KM1 path of winding also connect; Oil pump electrical machinery is controlled by contactor KM2, the coil of contactor KM2 is connected in series with stop button SB3, start button SB4, fus FU2 and thermorelay FR2, the coil of contactor KM2 has self-locking and operation and stops indicating GLR2, GLG2, and the coil of the second transfer relay KA2 and contactor KM2 path of winding also connect; Described contactor KM1 path of winding two ends also connect fuel injection pressure signal branch road, fuel injection pressure signal branch road comprises fuel injection pressure signal normally open contact Y and the auxiliary reclay KA3 coil of series connection, and the normally open contact of auxiliary reclay KA3 is connected with the described coil of the first transfer relay KA1 and the coil of the second transfer relay KA2 respectively; Between the coil of the first described transfer relay KA1, auxiliary reclay KA3 coil, fuel injection pressure signal normally open contact Y and stop button SB3, the coil of the second transfer relay KA2 is connected in series respectively contact LA1-11, LA1-12, LA1-22, the LA1-21 of double three rotary switch LA1, realizes the selection of Oil pump electrical machinery.
The utility model is simple in structure, can realize the standby each other of two oil pumps.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Fig. 1 is prior art schematic diagram;
Fig. 2 is the utility model schematic diagram.
Embodiment
As shown in Figure 2, the first Oil pump electrical machinery 1 is controlled by contactor KM1, the coil of contactor KM1 is connected in series with stop button SB1, start button SB2, fus FU1 and thermorelay FR1, the coil of contactor KM1 has self-locking and operation and stops indicating GLR1, GLG1, and the coil of the first transfer relay KA1 and contactor KM1 path of winding also connect; The second Oil pump electrical machinery 2 is controlled by contactor KM2, the coil of contactor KM2 is connected in series with stop button SB3, start button SB4, fus FU2 and thermorelay FR2, the coil of contactor KM2 has self-locking and operation and stops indicating GLR2, GLG2, and the coil of the second transfer relay KA2 and contactor KM2 path of winding also connect; Described contactor KM1 path of winding two ends also connect fuel injection pressure signal branch road, fuel injection pressure signal branch road comprises fuel injection pressure signal normally open contact Y and the auxiliary reclay KA3 coil of series connection, and the normally open contact of auxiliary reclay KA3 is connected with the described coil of the first transfer relay KA1 and the coil of the second transfer relay KA2 respectively; Between the coil of the first described transfer relay KA1, auxiliary reclay KA3 coil, fuel injection pressure signal normally open contact Y and stop button SB3, the coil of the second transfer relay KA2 is connected in series respectively contact LA1-11, LA1-12, LA1-22, the LA1-21 of double three rotary switch LA1, realizes the selection of Oil pump electrical machinery 1,2.
Described first, second Oil pump electrical machinery 1,2 power supply separately respectively, power supply is respectively taken from different transformers.
When an oil pump operation, can select another for emergency bearing oil pump.
When maintenance of fan, rotary switch can be screwed into zero-bit, thereby cancel the automatic input function of oil pump, two oil pumps all quit work.
Claims (2)
1. a gas fan oil pump circuit, it is characterized in that: the first Oil pump electrical machinery (1) is controlled by contactor KM1, the coil of contactor KM1 is connected in series with stop button SB1, start button SB2, fus FU1 and thermorelay FR1, the coil of contactor KM1 has self-locking and operation and stops indicating GLR1, GLG1, and the coil of the first transfer relay KA1 and contactor KM1 path of winding also connect; The second Oil pump electrical machinery (2) is controlled by contactor KM2, the coil of contactor KM2 is connected in series with stop button SB3, start button SB4, fus FU2 and thermorelay FR2, the coil of contactor KM2 has self-locking and operation and stops indicating GLR2, GLG2, and the coil of the second transfer relay KA2 and contactor KM2 path of winding also connect; Described contactor KM1 path of winding two ends also connect fuel injection pressure signal branch road, fuel injection pressure signal branch road comprises fuel injection pressure signal normally open contact Y and the auxiliary reclay KA3 coil of series connection, and the normally open contact of auxiliary reclay KA3 is connected with the described coil of the first transfer relay KA1 and the coil of the second transfer relay KA2 respectively; Between the coil of the first described transfer relay KA1, auxiliary reclay KA3 coil, fuel injection pressure signal normally open contact Y and stop button SB3, the coil of the second transfer relay KA2 is connected in series respectively contact LA1-11, LA1-12, LA1-22, the LA1-21 of double three rotary switch LA1.
2. gas fan oil pump circuit according to claim 1, is characterized in that: first, second described Oil pump electrical machinery (1,2) is power supply separately respectively, and power supply is respectively taken from different transformers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320489722.9U CN203430753U (en) | 2013-08-12 | 2013-08-12 | Oil pump circuit of coal gas draught fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320489722.9U CN203430753U (en) | 2013-08-12 | 2013-08-12 | Oil pump circuit of coal gas draught fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203430753U true CN203430753U (en) | 2014-02-12 |
Family
ID=50059797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320489722.9U Expired - Lifetime CN203430753U (en) | 2013-08-12 | 2013-08-12 | Oil pump circuit of coal gas draught fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203430753U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593838A (en) * | 2015-10-16 | 2017-04-26 | 安徽华尔泰化工股份有限公司 | Oil pump control circuit |
| CN108363320A (en) * | 2018-02-28 | 2018-08-03 | 苏州锃道研磨技术有限公司 | Main shaft orientation and rotary joint controlling and driving circuits |
| CN110474595A (en) * | 2019-08-16 | 2019-11-19 | 西安陕鼓动力股份有限公司 | A kind of air blower main oil pump control switching circuit and booting, method for handover control |
-
2013
- 2013-08-12 CN CN201320489722.9U patent/CN203430753U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593838A (en) * | 2015-10-16 | 2017-04-26 | 安徽华尔泰化工股份有限公司 | Oil pump control circuit |
| CN108363320A (en) * | 2018-02-28 | 2018-08-03 | 苏州锃道研磨技术有限公司 | Main shaft orientation and rotary joint controlling and driving circuits |
| CN110474595A (en) * | 2019-08-16 | 2019-11-19 | 西安陕鼓动力股份有限公司 | A kind of air blower main oil pump control switching circuit and booting, method for handover control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |