CN201187438Y - Monitoring apparatus of frame vehicle static pressure drive pump electric control system - Google Patents
Monitoring apparatus of frame vehicle static pressure drive pump electric control system Download PDFInfo
- Publication number
- CN201187438Y CN201187438Y CNU2008200578806U CN200820057880U CN201187438Y CN 201187438 Y CN201187438 Y CN 201187438Y CN U2008200578806 U CNU2008200578806 U CN U2008200578806U CN 200820057880 U CN200820057880 U CN 200820057880U CN 201187438 Y CN201187438 Y CN 201187438Y
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- electromagnetic valve
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 90
- 230000003068 static effect Effects 0.000 title claims abstract description 10
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 47
- 230000006698 induction Effects 0.000 claims description 81
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000001939 inductive effect Effects 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 1
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to the control or regulation of a pneumatic or hydraulic capstan, a winch or a pulley, particularly to an electric control system monitor device for a static press driving pump on a frame vehicle. An electric control system monitor device for a static press driving pump on a frame vehicle comprises a fuse (1), tap position controlling switches (2), control electromagnetic valves (3 and 4), electromagnetic valve windings (5 and 8), monitoring lamp relays (9 and 10), monitoring lamps (11 to 14), normal-close touch-break reed switches (15 to 18) and monitoring inducing solenoids (19 to 22). The device is characterized in that the normal-close touch-break reed switches (15 to 18) are respectively located in front of the monitoring inducing solenoids (19 to 22) and connected with the monitoring lamp relays (9 and 10) through the monitoring lamps (11 to 14). The device can prevent a driving pump from operating as a single pump under overload, prolong the service time of the driving pump and reduce failure rate and examination and maintenance cost of a vehicle.
Description
Technical field
The utility model relates to the control or the adjusting of pneumatic or hydraulic capstan, winch or coaster, is specially a kind of chassis static pressure driven pump automatical control system supervisory device.
Background technique
Chassis is the means of delivery that metallurgical production enterprise the north is used to transport various goods and materials such as sheet material, roll bending, section bar, blank, ore, slag, waste material, 90 tons of chassises producing with German SCHEVERLE company are example, its driving mode is the static pressure driving mode, be that engine power is passed to two bidirectional ram pumps, the work of each plunger pump is to rely on two solenoid valves that are installed on the pump housing to open control oil channel respectively, make the plunger swash plate of driven pump produce an angle of inclination output high-pressure and hydraulic oil, the promotion hydraulic oil motor advances or retreats.Two driven pumps are parallel operations, so vehicle relies on a driven pump also can make vehicle operating reluctantly, but because output power is little, tend to make the overload of the driven pump work that works independently.Vehicle is in the running of reality; reasons such as, solenoid valve Inside coil short circuit loosening and pilot short circuit owing to the solenoid valve plug-in unit on the pump housing; be forced into single pump work state thereby can cause some pumps to turn round; when this improper situation occurs; the driver but is difficult to know at once; think it is that the influence on heavy duty or road surface causes the speed of a motor vehicle to descend by mistake through regular meeting; make vehicle continuous service under overload situations; the temperature rise and the wearing and tearing of pump have been aggravated, the working life of seriously reducing driven pump.
Summary of the invention
Cause the reason of single pump work to have: in the operator cabin of vehicle, can't find above-mentioned fault, only when mainteinance repair, could find,
In order to overcome the defective of prior art, provide a kind of can be under the situation that vehicle dynamic is travelled, the driver just can in time find the watch-dog of driven pump operation troubles in operator cabin, the utility model discloses a kind of chassis static pressure driven pump automatical control system supervisory device.
The utility model reaches goal of the invention by following technical solution:
A kind of chassis static pressure driven pump automatical control system supervisory device, comprise safety fuse cutout, the gear control switch, No. 1 driven pump swash plate pivot angle control electromagnetic valve, No. 2 driven pump swash plate pivot angle control electromagnetic valve, No. 1 driven pump electromagnetic valve coil that advances, No. 1 driven pump electromagnetic valve coil that falls back, No. 2 driven pumps electromagnetic valve coil that advances, No. 2 driven pumps electromagnetic valve coil that falls back, reverse gear supervisory lamp relay, forward gears supervisory lamp relay, No. 1 driven pump electromagnetic valve coil work supervisory lamp that advances, No. 2 driven pumps electromagnetic valve coil work supervisory lamp that advances, No. 1 driven pump electromagnetic valve coil work supervisory lamp that falls back, No. 2 driven pumps electromagnetic valve coil work supervisory lamp that falls back, No. 1 driven pump normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction that advances, No. 2 driven pumps normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction that advances, No. 2 driven pumps normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction that falls back, No. 1 driven pump normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction that falls back, No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid that falls back, No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid that falls back, its structure is: it is characterized in that: power supply is connected to the gear control switch respectively by safety fuse cutout 1, reverse gear supervisory lamp relay, forward gears supervisory lamp relay; The forward gears end of gear control switch is connected to No. 1 driven pump electromagnetic valve coil, No. 2 driven pumps electromagnetic valve coil that advances that advances by No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid that advances that advances respectively with lead respectively; The reverse gear end of gear control switch is connected to No. 2 driven pumps electromagnetic valve coil, No. 1 driven pump electromagnetic valve coil that falls back that falls back by No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid, No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid that falls back that falls back respectively with lead respectively; No. 1 driven pump normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction that advances, No. 2 driven pumps normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction that advances, No. 2 driven pumps normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction that falls back, No. 1 driven pump normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction that falls back lays respectively at No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid that falls back, No. 1 driven pump falls back in the solenoidal the action of a magnetic field scope of electromagnetic valve coil work monitoring induction, No. 1 driven pump normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction that advances, No. 2 driven pumps advance the normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction respectively by No. 1 driven pump electromagnetic valve coil work supervisory lamp that advances, No. 2 driven pumps electromagnetic valve coil work supervisory lamp that advances is wired to forward gears supervisory lamp relay; No. 2 driven pumps normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction, No. 1 driven pump normally closed moving trunk snap reed pipe of electromagnetic valve coil work monitoring induction that falls back that falls back is wired to reverse gear supervisory lamp relay by No. 1 driven pump electromagnetic valve coil work supervisory lamp, No. 2 driven pumps electromagnetic valve coil work supervisory lamp that falls back that falls back respectively.
During use, if driven pump all is in normal working, corresponding monitoring induction solenoid has electric current to flow through, and induces magnetic field, and feasible corresponding normally closed moving trunk snap reed pipe is off state all, thereby has certain supervisory lamp to extinguish.Then the driver can to judge certain driven pump working state unusual, thereby even take corresponding measure.
Use of the present utility model can make the driver in time find idle driven pump, thereby parking maintenance has prevented the overwork of driven pump list pump, prolongs the working life of driven pump greatly, reduces the rate of fault and the cost of overhaul of vehicle.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model.
Embodiment
Below further specify the utility model by specific embodiment.
A kind of chassis static pressure driven pump automatical control system supervisory device, as shown in Figure 1, comprise safety fuse cutout 1, gear control switch 2, No. 1 driven pump swash plate pivot angle control electromagnetic valve 3, No. 2 driven pump swash plate pivot angle control electromagnetic valve 4, No. 1 driven pump electromagnetic valve coil 5 that advances, No. 1 driven pump electromagnetic valve coil 6 that falls back, No. 2 driven pumps electromagnetic valve coil 7 that advances, No. 2 driven pumps electromagnetic valve coil 8 that falls back, reverse gear supervisory lamp relay 9, forward gears supervisory lamp relay 10, No. 1 driven pump electromagnetic valve coil work supervisory lamp 11 that advances, No. 2 driven pumps electromagnetic valve coil work supervisory lamp 12 that advances, No. 1 driven pump electromagnetic valve coil work supervisory lamp 13 that falls back, No. 2 driven pumps electromagnetic valve coil work supervisory lamp 14 that falls back, No. 1 driven pump normally closed moving trunk snap reed pipe 15 of electromagnetic valve coil work monitoring induction that advances, No. 2 driven pumps normally closed moving trunk snap reed pipe 16 of electromagnetic valve coil work monitoring induction that advances, No. 2 driven pumps normally closed moving trunk snap reed pipe 17 of electromagnetic valve coil work monitoring induction that falls back, No. 1 driven pump normally closed moving trunk snap reed pipe 18 of electromagnetic valve coil work monitoring induction that falls back, No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid 19 that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid 20 that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid 21 that falls back, No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid 22 that falls back, in the gear control switch 2, " N " is neutral gear, " R " is reverse gear, and " F " is forward gears.Its structure is: power supply is connected to gear control switch 2, reverse gear supervisory lamp relay 9, forward gears supervisory lamp relay 10 respectively by safety fuse cutout 1; The forward gears end of gear control switch 2 is connected to No. 1 driven pump 5, No. 2 driven pumps of electromagnetic valve coil electromagnetic valve coil 7 that advances that advances respectively by No. 1 driven pump 19, No. 2 driven pumps of electromagnetic valve coil work monitoring induction solenoid electromagnetic valve coil work monitoring induction solenoid 20 usefulness leads that advance that advance respectively; The reverse gear end of gear control switch 2 is connected to No. 2 driven pumps 8, No. 1 driven pump of electromagnetic valve coil electromagnetic valve coil 6 that falls back that falls back respectively by No. 2 driven pumps 21, No. 1 driven pump of electromagnetic valve coil work monitoring induction solenoid electromagnetic valve coil work monitoring induction solenoid 22 usefulness leads that fall back that fall back respectively; No. 1 driven pump normally closed moving trunk snap reed pipe 15 of electromagnetic valve coil work monitoring induction that advances, No. 2 driven pumps normally closed moving trunk snap reed pipe 16 of electromagnetic valve coil work monitoring induction that advances, No. 2 driven pumps normally closed moving trunk snap reed pipe 17 of electromagnetic valve coil work monitoring induction that falls back, No. 1 driven pump normally closed moving trunk snap reed pipe 18 of electromagnetic valve coil work monitoring induction that falls back lays respectively at No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid 19 that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid 20 that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid 21 that falls back, No. 1 driven pump falls back in the action of a magnetic field scope of electromagnetic valve coil work monitoring induction solenoid 22; No. 1 driven pump 15, No. 2 driven pumps of the electromagnetic valve coil work monitoring normally closed moving trunk snap reed pipe of induction normally closed moving trunk snap reed pipe 16 of electromagnetic valve coil work monitoring induction that advances that advances is wired to forward gears supervisory lamp relay 10 by No. 1 driven pump 11, No. 2 driven pumps of electromagnetic valve coil work supervisory lamp electromagnetic valve coil work supervisory lamp 12 that advances that advances respectively; No. 2 driven pumps 17, No. 1 driven pump of the electromagnetic valve coil work monitoring normally closed moving trunk snap reed pipe of induction normally closed moving trunk snap reed pipe 18 of electromagnetic valve coil work monitoring induction that falls back that falls back is wired to reverse gear supervisory lamp relay 9 by No. 1 driven pump 13, No. 2 driven pumps of electromagnetic valve coil work supervisory lamp electromagnetic valve coil work supervisory lamp 14 that falls back that falls back respectively.
During use, system powers on by safety fuse cutout 1, and electric current enters 4 supervisory lamps 11～14 through the normally-closed contact of supervisory lamp relay 9 and 10 respectively, and respectively by 4 normally closed moving trunk snap reed pipe 15～18 back bonding, 4 supervisory lamps are bright then.This design feature is: it is normal can understanding supervisory lamp and circuit thereof and normally closed moving trunk snap reed pipe before engage a gear, if there is lamp not work, illustrates that supervisory system has fault, should overhaul.Close dry reed-pipe if adopt often to start, just can not before engage a gear, effectively check the quality of supervisory lamp, so also just can not normally monitor the working condition of driven pump solenoid valve.
After hanging forward gears, electric current is through the F contact of gear control switch 2, passes to be connected in advance monitoring induction solenoid 19,20 in the solenoid valve circuit of driven pump and to arrive driven pumps advance electromagnetic valve coil 5 and 7 the solenoid valve work of advancing of bonding then, driven pump respectively.Because monitoring induction solenoid 19 and 20 has electric current to pass through, and produces magnetic field, make the contact action of normally closed moving trunk snap reed pipe 15 and 16, normally-closed contact disconnects, cut off the electric current of supervisory lamp 11 and 12, supervisory lamp 11 and 12 extinguishes, and illustrates that the driven pump electromagnetic valve coil that advances is working properly.If in the way of travelling, supervisory lamp 11 and 12 wherein one bright, illustrate that the driven pump electromagnetic valve coil that advances has one not work, principle is, when driven pump advance electromagnetic valve coil 5 and 7 and circuit, plug-in unit wherein one the tunnel open circuit, when not having electric current to pass through, the monitoring induction solenoid 19 or 20 that is connected in this circuit does not have electric current to pass through, magnetic field disappears, and normally closed moving trunk snap reed pipe 15 or 16 contact reset, and connect the circuit of supervisory lamp 11 or 12, make supervisory lamp luminous, remind the single pump work of driver, can not travel, must parking maintenance.
Reverse gear supervisory lamp relay 9 powers on when hanging forward gears, and normally-closed contact disconnects, and cuts off the power supply of the electromagnetic valve coil work supervisory lamp 13,14 that falls back, and these 2 lamps are extinguished when hanging forward gears.This design characteristic is that when vehicle advanced, the reverse gear electromagnetic valve coil was idle, did not need monitoring, so just can protect reverse gear supervisory lamp and the normally closed moving trunk snap reed pipe of monitoring induction not to reduce operating life because of long-time energising; In addition, this supervisory lamp does not work when advancing, and can reduce the stimulation of light to the driver, improve the supervisory lamp that advances when bright the driver extent of reaction of light is prevented that erroneous judgement is disconnected.
After hanging backward gear, electric current is through the R contact of gear control switch 2, passes to be connected in advance monitoring induction solenoid 21,22 in the solenoid valve circuit of driven pump and to arrive driven pumps fall back electromagnetic valve coil 8 and 6 the solenoid valve work that falls back of bonding then, driven pump respectively.Because monitoring induction solenoid 21 and 22 has electric current to pass through, and produces magnetic field, make the contact action of normally closed moving trunk snap reed pipe 17 and 18, normally-closed contact disconnects, cut off the electric current of supervisory lamp 14 and 13, supervisory lamp 14 and 13 extinguishes, and illustrates that the driven pump electromagnetic valve coil that falls back is working properly.If in the way of travelling, supervisory lamp 14 and 13 wherein one bright, illustrate that the driven pump electromagnetic valve coil that advances has one not work, principle is, when driven pump fall back electromagnetic valve coil 8 and 6 and circuit, plug-in unit wherein one the tunnel open circuit, when not having electric current to pass through, the monitoring induction solenoid 21 or 22 that is connected in this circuit does not have electric current to pass through, magnetic field disappears, and normally closed moving trunk snap reed pipe 17 or 18 contact reset, and connect the circuit of supervisory lamp 14 or 13, make supervisory lamp luminous, remind the single pump work of driver, can not travel, must parking maintenance.
Forward gears supervisory lamp relay 10 powers on when hanging reverse gear, and normally-closed contact disconnects, and cuts off the power supply of work supervisory lamp 11 and 12, and this lamp is extinguished when hanging backward gear.This design characteristic is that when vehicle fell back, the forward gears electromagnetic valve coil was idle, did not need monitoring, so just can protect the supervisory lamp that advances not reduce operating life because of long-time energising with the normally closed moving trunk snap reed pipe of monitoring induction; In addition, this supervisory lamp does not work when falling back, and can reduce the stimulation of light to the driver, improve the supervisory lamp that falls back when bright the driver extent of reaction of light is prevented that erroneous judgement is disconnected.
Claims (1)
1. chassis static pressure driven pump automatical control system supervisory device, comprise safety fuse cutout (1), gear control switch (2), No. 1 driven pump swash plate pivot angle control electromagnetic valve (3), No. 2 driven pump swash plate pivot angle control electromagnetic valve (4), No. 1 driven pump electromagnetic valve coil (5) that advances, No. 1 driven pump electromagnetic valve coil (6) that falls back, No. 2 driven pumps electromagnetic valve coil (7) that advances, No. 2 driven pumps electromagnetic valve coil (8) that falls back, reverse gear supervisory lamp relay (9), forward gears supervisory lamp relay (10), No. 1 driven pump electromagnetic valve coil work supervisory lamp (11) that advances, No. 2 driven pumps electromagnetic valve coil work supervisory lamp (12) that advances, No. 1 driven pump electromagnetic valve coil work supervisory lamp (13) that falls back, No. 2 driven pumps electromagnetic valve coil work supervisory lamp (14) that falls back, No. 1 driven pump electromagnetic valve coil work monitoring induction normally closed moving trunk snap reed pipe (15) that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction normally closed moving trunk snap reed pipe (16) that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction normally closed moving trunk snap reed pipe (17) that falls back, No. 1 driven pump electromagnetic valve coil work monitoring induction normally closed moving trunk snap reed pipe (18) that falls back, No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid (19) that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid (20) that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid (21) that falls back, No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid (22) that falls back
It is characterized in that: power supply is connected to gear control switch (2), reverse gear supervisory lamp relay (9), forward gears supervisory lamp relay (10) respectively by safety fuse cutout 1; The forward gears end of gear control switch (2) is connected to No. 1 driven pump electromagnetic valve coil (5), No. 2 driven pumps electromagnetic valve coil (7) that advances that advances by No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid (19), No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid (20) that advances that advances respectively with lead respectively; The reverse gear end of gear control switch (2) is connected to No. 2 driven pumps electromagnetic valve coil (8), No. 1 driven pump electromagnetic valve coil (6) that falls back that falls back by No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid (21), No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid (22) that falls back that falls back respectively with lead respectively; No. 1 driven pump electromagnetic valve coil work monitoring induction normally closed moving trunk snap reed pipe (15) that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction normally closed moving trunk snap reed pipe (16) that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction normally closed moving trunk snap reed pipe (17) that falls back, No. 1 driven pump electromagnetic valve coil work monitoring normally closed moving trunk snap reed pipe of induction (18) that falls back lays respectively at No. 1 driven pump electromagnetic valve coil work monitoring induction solenoid (19) that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid (20) that advances, No. 2 driven pumps electromagnetic valve coil work monitoring induction solenoid (21) that falls back, No. 1 driven pump falls back in the action of a magnetic field scope of electromagnetic valve coil work monitoring induction solenoid (22), No. 1 driven pump electromagnetic valve coil work monitoring induction normally closed moving trunk snap reed pipe (15) that advances, No. 2 driven pumps advance the electromagnetic valve coil work monitoring normally closed moving trunk snap reed pipe of induction (16) respectively by No. 1 driven pump electromagnetic valve coil work supervisory lamp (11) that advances, No. 2 driven pumps electromagnetic valve coil work supervisory lamp (12) that advances is wired to forward gears supervisory lamp relay (10); No. 2 driven pumps electromagnetic valve coil work monitoring induction normally closed moving trunk snap reed pipe (17), No. 1 driven pump electromagnetic valve coil work monitoring normally closed moving trunk snap reed pipe of induction (18) that falls back that falls back is wired to reverse gear supervisory lamp relay (9) by No. 1 driven pump electromagnetic valve coil work supervisory lamp (13), No. 2 driven pumps electromagnetic valve coil work supervisory lamp (14) that falls back that falls back respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200578806U CN201187438Y (en) | 2008-04-29 | 2008-04-29 | Monitoring apparatus of frame vehicle static pressure drive pump electric control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200578806U CN201187438Y (en) | 2008-04-29 | 2008-04-29 | Monitoring apparatus of frame vehicle static pressure drive pump electric control system |
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| Publication Number | Publication Date |
|---|---|
| CN201187438Y true CN201187438Y (en) | 2009-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200578806U Expired - Fee Related CN201187438Y (en) | 2008-04-29 | 2008-04-29 | Monitoring apparatus of frame vehicle static pressure drive pump electric control system |
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| CN (1) | CN201187438Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807329A (en) * | 2017-12-03 | 2018-03-16 | 大唐滨州发电有限公司 | A kind of steam turbine AST solenoid valve failures real-time monitoring and alarming and method |
-
2008
- 2008-04-29 CN CNU2008200578806U patent/CN201187438Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807329A (en) * | 2017-12-03 | 2018-03-16 | 大唐滨州发电有限公司 | A kind of steam turbine AST solenoid valve failures real-time monitoring and alarming and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090128 Termination date: 20120429 |