CN204380834U - A kind of pulverizer lubricate station control circuit - Google Patents
A kind of pulverizer lubricate station control circuit Download PDFInfo
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- CN204380834U CN204380834U CN201420847926.XU CN201420847926U CN204380834U CN 204380834 U CN204380834 U CN 204380834U CN 201420847926 U CN201420847926 U CN 201420847926U CN 204380834 U CN204380834 U CN 204380834U
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Abstract
The utility model provides a kind of pulverizer lubricate station control circuit, a kind of pulverizer lubricate station control circuit, comprise petrol station control loop, distant place change-over switch KD on the spot, dc source DY, terminal block, master control power switch 1DK and control power switch 2DK, ash gate switch puts in place signal by the utility model, hydraulicchange-over valve switch puts in place signal, lifting grinding roller puts the control power line of signal in place separately with a single-phase air switch control, when the lifting of arbitrary grinding roller puts in place holding wire, the switch of hydraulicchange-over valve puts in place holding wire, the switch of the ash gate holding wire that puts in place is scalded ground connection or other reason ground connection by the hot blast that grinding machine spills, all only has this single-phase air switch tripping operation, only affect on the spot or the signal designation of DCS, do not affect the normal operation that other control power supply, thus ensure that grinding machine petrol station continues to run, ensure that grinding machine continues to run.
Description
Technical field
The utility model relates to pulverizer lubricate station circuit protection field, is specifically related to a kind of pulverizer lubricate station control circuit.
Background technology
The pulverizer lubricate station stop jumping of power plant pulverized coal preparation system, must join jumping coal pulverizer, affect on the one hand unit and falls and exert oneself, if another aspect adjusts bad, likely cause boiler flameout, thus jeopardize safety, the economical operation of unit after coal pulverizer stop jumping.Therefore, ensure that the normal operation of grinding machine petrol station is most important.Power plant intrinsic grinding machine petrol station control system is the control power supply of ash gate and coal pulverizer lubricating oil system, control power sharing one group of sky of hydraulic oil system is opened, due to coal pulverizer lifting grinding roller put in place signal, hydraulicchange-over valve switch put in place the travel switch of signal and ash gate put in place signal etc. easily scalded by the leakage hot blast of coal pulverizer after ground connection, the master control power supply sky of pulverizer lubricate station will be caused to open tripping operation, cause whole petrol station to be stopped transport, have a strong impact on the safe operation of coal pulverizer.For solving this problem, must again redesign this grinding machine petrol station control loop, when ensureing external circuit fault, grinding machine petrol station continues to run, and only sends out alarm signal, does not jump connection miscellaneous equipment.
From the service condition analysis of coal pulverizer, the intertripping signal that grinding machine petrol station delivers to DCS only has grinder lubricating oil pump to trip.Therefore, we will ensure that grease pump normally runs by the object of research exactly, and the equipment that other lifting grinding roller signal, ash gate travel switch control signal etc. easily break down on the spot can only be reported to the police, and does not jump petrol station.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of pulverizer lubricate station control circuit.
The utility model is achieved by the following technical programs.
A kind of pulverizer lubricate station control circuit that the utility model provides, comprise petrol station control loop, distant place change-over switch KD on the spot, dc source DY, terminal block, master control power switch 1DK and control power switch 2DK, the described change-over switch KD of a distant place on the spot, the input of dc source DY is all connected with outside C phase power supply by master control power switch 1DK, the described change-over switch KD of a distant place is on the spot connected with petrol station control loop, hydraulicchange-over valve switch in described petrol station control loop puts in place signal, lifting grinding roller put in place signal that signal and ash gate switch put in place with control power switch 2DK and be connected, the other end of described control power switch 2DK is connected with the C of outside three phase mains, the output of described dc source DY is held with the X1:41 of terminal block respectively, X1:42 holds and X1:43 holds and is connected.
The described change-over switch KD of a distant place on the spot output be also connected to relay CZJ, relay 1J and relay 2J; Described relay CZJ, relay 1J are connected with master control power switch 1DK with the rear end of relay 2J.
The two ends of described relay 1J and relay 2J are parallel with indicator lamp VD1 and indicator lamp VD1 respectively.
The model SZW26-25/N029.2 of the described change-over switch KD of a distant place on the spot.
The beneficial effects of the utility model are: put in place ash gate switch signal, hydraulicchange-over valve switch puts in place signal, lifting grinding roller puts the control power line of signal in place separately with a single-phase air switch control, when the lifting of arbitrary grinding roller puts in place holding wire, the switch of hydraulicchange-over valve puts in place holding wire, the switch of the ash gate holding wire that puts in place is scalded ground connection or other reason ground connection by the hot blast that grinding machine spills, all only has this single-phase air switch tripping operation, only affect on the spot or the signal designation of DCS, do not affect the normal operation that other control power supply, thus ensure that grinding machine petrol station continues to run, ensure that grinding machine continues to run.
Accompanying drawing explanation
Fig. 1 is electric drawings of the present utility model;
Fig. 2 is the load wiring figure of Fig. 1;
Fig. 3 is terminal row wiring figure of the present utility model.
Detailed description of the invention
Further describe the technical solution of the utility model below, but described in claimed scope is not limited to.
A kind of pulverizer lubricate station control circuit as shown in Fig. 1 ~ Fig. 2, comprise hydraulicchange-over valve control loop, lifting grinding roller control loop, ash gate control loop, hydraulic oil unit loads oil pump control loop, and hydraulic oil unit becomes, determines Loading Control loop, Lubricating-oil Station oil pump control loop, Hydraulic Station deslagging pump control loop, on the spot distant place change-over switch KD, dc source DY, terminal block, master control power switch 1DK and control power switch 2DK; The input of the described change-over switch KD of a distant place on the spot, dc source DY is all connected with outside C phase power supply by master control power switch 1DK, the described change-over switch KD of a distant place is on the spot connected with petrol station control loop, the hydraulicchange-over valve switch in described petrol station control loop put in place signal, lifting grinding roller put in place signal that signal and ash gate switch put in place with control power switch 2DK and be connected; The other end of described control power switch 2DK is connected with the C of outside three phase mains; The output of described dc source DY is held with the X1:41 of terminal block respectively, X1:42 holds and X1:43 holds and is connected.
The described change-over switch KD of a distant place on the spot output be also connected to relay CZJ, relay 1J and relay 2J; Described relay CZJ, relay 1J are connected with master control power switch 1DK with the rear end of relay 2J.
The two ends of described relay 1J and relay 2J are parallel with indicator lamp VD1 and indicator lamp VD1 respectively.
The model SZW26-25/N029.2 of the described change-over switch KD of a distant place on the spot.
C is live wire, and N is zero line, and the output terminals A 6101 of distant place change-over switch KD and A6103 are that control line is run in a distant place on the spot, and A6102 is control line on the spot, and under normal circumstances, equipment is in distant place control model.A6101 and A6103 is as grease pump, the control power supply loading the control loop such as oil pump, deslagging oil pump.Coal pulverizer lifting grinding roller signal, the hydraulicchange-over valve switch travel switch of signal and the ash gate signal that puts in place that puts in place that puts in place controls by controlling power switch 2DK, and control power switch 2DK and X2:58 end and connect, X2:58 end is No. 58 terminal of X2 terminal block.
As shown in Figure 3, X2 terminal block is signal input terminal, in X2 terminal block from No. 34 terminal, namely the lifting of grinding roller put in place signal, hydraulicchange-over valve switch put in place signal, ash gate put in place the live wire of the external circuits such as signal of switch all receive control on power switch 2DK by No. 58 terminal of X2 terminal block; Control the C phase that power switch 2DK connects outside three phase mains.X2 terminal block No. 34 line between terminal and No. 28 terminals is disconnected, can the lifting of independent grinding roller put in place signal, hydraulicchange-over valve switch put in place signal, ash gate switch to put in place signal.If the lifting of arbitrary grinding roller puts in place the switch of holding wire, hydraulicchange-over valve put in place holding wire, ash gate the switch hot blast that holding wire spilt by grinding machine that puts in place scald ground connection or other reason ground connection, all only have and control power switch 2DK tripping operation, only affect on the spot or the signal designation of DCS, do not affect the normal operation that other control power supply, thus ensure that pulverizer lubricate station continues to run, ensure that coal pulverizer continues to run.
Claims (4)
1. a pulverizer lubricate station control circuit, comprise petrol station control loop, distant place change-over switch KD on the spot, dc source DY, terminal block, master control power switch 1DK and control power switch 2DK, it is characterized in that: the described change-over switch KD of a distant place on the spot, the input of dc source DY is all connected with outside C phase power supply by master control power switch 1DK, the described change-over switch KD of a distant place is on the spot connected with petrol station control loop, hydraulicchange-over valve switch in described petrol station control loop puts in place signal, lifting grinding roller put in place signal that signal and ash gate switch put in place with control power switch 2DK and be connected, the other end of described control power switch 2DK is connected with the C of outside three phase mains,
The output of described dc source DY is held with the X1:41 of terminal block respectively, X1:42 holds and X1:43 holds and is connected.
2. pulverizer lubricate station control circuit as claimed in claim 1, is characterized in that: the output of the described change-over switch KD of a distant place on the spot is also connected to relay CZJ, relay 1J and relay 2J; Described relay CZJ, relay 1J are connected with master control power switch 1DK with the rear end of relay 2J.
3. pulverizer lubricate station control circuit as claimed in claim 2, is characterized in that: the two ends of described relay 1J and relay 2J are parallel with indicator lamp VD1 and indicator lamp VD1 respectively.
4. pulverizer lubricate station control circuit as claimed in claim 1, is characterized in that: the model SZW26-25/N029.2 of the described change-over switch KD of a distant place on the spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847926.XU CN204380834U (en) | 2014-12-26 | 2014-12-26 | A kind of pulverizer lubricate station control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847926.XU CN204380834U (en) | 2014-12-26 | 2014-12-26 | A kind of pulverizer lubricate station control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204380834U true CN204380834U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420847926.XU Active CN204380834U (en) | 2014-12-26 | 2014-12-26 | A kind of pulverizer lubricate station control circuit |
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| CN (1) | CN204380834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143687B (en) * | 2017-06-28 | 2023-09-15 | 华能莱芜发电有限公司 | Hydraulic valve in-place signal feedback device of coal mill |
-
2014
- 2014-12-26 CN CN201420847926.XU patent/CN204380834U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143687B (en) * | 2017-06-28 | 2023-09-15 | 华能莱芜发电有限公司 | Hydraulic valve in-place signal feedback device of coal mill |
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