JPH09119306A - Auto turning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the lubricating performance of an engine more reliably without running the engine. SOLUTION: In this auto turning device periodically-running a priming pump for supplying lubricating oil to an engine while the engine is stopping, a timer is fitted in series with a priming 'automatic' contact 43PA2 , the contact ATRUX1 of an engine starting air valve relay ATRUX and so on, and periodical priming running for 240 hours is conducted until the timer AT operates. Further priming is conducted for 5 minutes until a timer 88P5MT operates just before or after that, timers AT5T, AT15T are energized, fuel is cut off for 15 seconds through a relay ATSOX until the AT15T operates. During this period, an auxiliary tools for starting the engine is operated through the relay ATRUX and the engine is rotated at low speed for 5 seconds until the timer AT5T operates. Therefore, it is possible to rotate the engine at low speed and flow lubricating oil into a rotating element of the engine without injecting fuel to the engine vainly. Auto turning is completed with the relay turned off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auto-turning device for supplying lubricating oil to a prime mover such as a diesel engine generator of an emergency private power generation facility.

[0002]

2. Description of the Related Art A prime mover such as a diesel power generator of an emergency private power generation facility performs the following to maintain a lubricating performance (lubricating oil film) while the engine is stopped.

1) Regular maintenance operation by a technician 2) Automatic maintenance operation by an automatic regular operation circuit incorporating a relay and a timer in an electric circuit (sequence) 3) An electric priming pump for supplying lubricating oil to an engine is provided and a relay, Automatic priming by automatic regular lubricating oil priming circuit with built-in timer (engine does not operate).

[0004]

However, in 1) above, a technician is required for operation, and in 1) and 2), fuel consumption is consumed for operation, and pollution occurs due to incomplete combustion in no-load operation. In 3), since the engine is stopped, improvement of lubrication performance becomes uncertain, and automatic priming operation cannot be confirmed.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide an auto-turning device which can surely improve the lubricating performance without operating the engine. To provide.

[0006]

SUMMARY OF THE INVENTION An auto-turning device according to the present invention is a periodical device that regularly operates a priming pump while the engine is stopped to supply lubricating oil to the engine and maintain the lubricating performance of the engine. An auto-turning device for an engine having a priming operation circuit, which operates a priming pump for a predetermined time after a regular priming operation, and a circuit which shuts off fuel supply to the engine for a short time immediately before or after the priming pump operation ends. And a circuit for operating the engine start assisting tool for a short time to rotate the engine at a low speed for a short time within the time when the fuel supply is cut off.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 shows a lubricating oil priming pump control circuit of an auto-turning control board, FIG. 2 shows an auto-turning control circuit of the board, FIG. 3 shows an output signal circuit of the board, and FIG. 4 shows an auto-turning flow.

In FIG. 1, 1 is an auto-turning control panel, IM is a priming pump motor for supplying lubricating oil to the engine of a diesel engine power generator, MCCB is a power circuit breaker, and MCCB-P is a pump circuit breaker. ,
49P is a pump overload relay, 88P is a main contact 88P ₁
And the electromagnetic contactor pump having an auxiliary contact 88P ₂ ~88P _5, 88PT1 regularly priming pump pause time setting operation delay timer, 88PT2 operation delay timer for the pump operation time set for periodic priming, 88PT1X
Is an auxiliary relay, PL1 and PL2 are pump operation / stop display lamps, and 43P is a priming manual / automatic operation changeover switch.

In FIG. 2, 2 is a generator panel, MCCB-
8D is a wiring breaker for control power supply, AT is an operation delay timer for setting a regular priming period, AT5T is an operation delay timer for setting an engine air pressure starting air valve operating time, AT15T is an operation delay timer for setting a fuel stop solenoid energizing time, 88
P5MT is an operation delay timer for setting auto-turning pump operating time, 14LLX, 14LPX, ATX, AT
PX, ATRUX, ATSOX, 88P5MX are auxiliary relays, PL3 is a lamp for displaying during auto turning, C is a counter, and BS-AT is a switch for manual auto turning.

Referring to FIG. 1, an electromagnetic contactor 88P for a pump is used.
Is between the control AC200v power line UCP and DCP,
Contact breaker MCCB for auxiliary manual return of wiring breaker MCCB-P
-P ₁ , contact point 49P ₁ of overload relay 49P, relay 14
The contact point 14LPX ₁ of the LPX (FIG. 2) and the manual side contact point 43P _M or the automatic side contact point 43P _{A of the} operation changeover switch 43P.
And a contact 88PT1X ₂ of the relay 88PT1X and a contact ATPX ₁ of the relay ATPX are connected via a parallel circuit. Display lamp PL1 in parallel with electromagnetic contactor 88P
Is connected.

The timer 88PT1 has a relay AT between the automatic contact 43P _A of the operation changeover switch and the power supply line DCP.
It is connected via the contact ATPX ₂ of the PX (FIG. 2) and the auxiliary contact 88P ₂ of the electromagnetic contactor 88P. Relay 88P
T1X is the relay contact ATPX ₂ and the power supply line DCP
It is connected via a contact 88PT2 ₁ parallel contact circuit and the timer 88PT2 contact 88PT1 ₁ and self-holding contacts 88PT1X ₁ timer 88PT1 between.

The timer 88PT2 is the relay contact ATP.
Auxiliary contact 8 of the electromagnetic contactor between X ₂ and the power line DCP
It is connected via 8P ₃ . Power Line UCP display lamp PL2 via the contact P ₄ of the relay 88P, D
It is connected between CPs.

Referring to FIG. 2, relays 14LLX and 14
The LPX is connected between the control DC 100v power supply lines PC and NC via contacts 14LL and 14LX of a low speed detection relay for detecting the low speed rotation of the power generator of the power generator panel 2, respectively. The timer AT is a power line DC, N
Auxiliary contact AX where the generator panel operation changeover switch is on the "automatic" side between C, switch 43A on the auxiliary circuit of the generator panel (air compressor) rotating operation side, auxiliary contact 27R of the AC shortage relay
1, automatic turning control panel operation changeover switch 43 automatic contact 43P _A2 , relay 14LPX contact 14LPX
₁ , connected through the contact ATRUX _{1 of the} relay ATRUX.

The relay ATX is provided between the contact 14LPX ₁ and the power supply line NC via the contact AT _{1 of the} timer AT, the self-holding contact ATX ₁ , the parallel contact circuit of the auto-turning switch BS-AT and the contact AT15T _{1 of the} timer AT15T. It is connected. The relay ATPX is the above contact AT
15T ₁ and the power supply line NC are connected via a contact 88P5MX _{2 of a} relay 88P5MX.

The relay ATRUX has the above-mentioned contacts AT ₁ and AT.
X ₁ and parallel contact circuit and the contacts of the switch BS-AT AT1
Between the line A connected to the connection point of 5 ₁ and the power supply line NC,
Timer 88P5MT contact 88P5MT ₁ , timer AT
Parallel contact circuit and the timer contacts of 5T AT5T ₁ AT5
It is connected via a contact AT5T ₂ of T.

Timer AT5T, AT15T, relay AT
SOX is respectively connected between the communication wants line B and the power supply line NC to a connection point of the parallel contact circuit and the contact AT5T ₂ of said contact 88P5MT ₁ and AT5T _1. Timer 88P
5MT is connected between the line A and the power supply line NC through a contact 88P ₅ of an electromagnetic contactor 88P (FIG. 1).

The relay 885P5MX has a contact 88P5 of a timer 88P5MT between the line A and the power supply line NC.
MT ₂ and self-holding contact 88P5MX ₁ are connected via a parallel contact circuit. The display lamp PL3 is connected between the line A and the power supply line NC, and the counter C is provided between the power supply line PC and NC and the contact ATX _{2 of the} relay ATX.
To the relay 14LLX via the contact 14LLX _{2 of the} relay 14LLX.

Referring to FIG. 3, the relays ATRUX, A
Contact points of TSOX and ATX ATRUX ₂ , ATSOX ₁ , A
TX ₃ is provided so as to output to the generator panel 2 outputs for starting air, for stopping solenoid, and for displaying during turning, respectively. Further, the auxiliary contacts MCCB-P ₂ and 49P _{2 of the} circuit breaker MCCB-P and the overload relay 49P.
Are respectively provided as spare output contacts.

Next, the operation of the auto-turning control panel will be described with reference to FIG.

(1) Manual priming operation: As shown in FIG. 1, the circuit breakers MCCB and MCCB-P are turned on,
Put the operation changeover switch 43P into the "manual" side 43P _M. Contact MCCB-P ₁ , 49P ₁ , 14LPX ₁ , 43
The electromagnetic contactor 88P is energized by the P _M circuit, and the main contact 88
When P ₁ is turned on, the priming pump motor IM rotates to supply lubricating oil to the engine, and the pump operation display lamp PL 1 lights up. At this time, the auxiliary contact 88P ₄ is O
Since it is FF, the pump stop display pump PL2 is turned off. Electromagnetic contactor 88P by returning the operation changeover switch 43P to "OFF" stops is de-energized motor IM, end priming operation, pump stop display lamp PL2 is turned by contact 88P _4. As described above, the priming operation can be performed at any time by turning the operation changeover switch 43P on the "manual" side.

(2) Automatic priming operation: With reference to FIG. 1, the circuit breakers MCCB and MCCB-P are turned on,
The operation changeover switch 43P is put in the "automatic" side 43P _A. Contact MCCB-P ₁ , 49P ₁ , 14LPX ₁ , 43
P _A, is energized ATPX _2, timer 88PT1 in circuit 88P _2, contact 88PT1 ₁ is turned ON, the contacts 88P
Relay 88PT1X is energized via T2 ₁ , contact 8
Self-holding with 8PT1X ₁ and contact 88PT1
The electromagnetic contactor 88P is energized by X ₂ and the main contact 88P ₁
When the switch is turned on, the motor IM rotates.

That is, the motor IM is operated after the delay operation time (8H) of the timer 88PT1 after the operation changeover switch is put in the "automatic" side 43P _A , and the pump operation display lamp PL1 is turned on. When the contact 88P ₄ is turned off, the pump stop indicator lamp PL2 is turned off, and when the contact 88P ₂ is turned off, the operation delay relay 88PT1 is deenergized.

At the same time, when the contact 88P ₃ is turned on, the timer 88PT2 is energized, the contact 88PT2 ₁ is turned off after the delay operation time (5M), the relay 88PT1X is deenergized, and the contact 88PT1X ₂ is turned off. 88P is deenergized, the motor IM is stopped by turning OFF the main contact 88P ₁ , the pump operation display lamp PL1 is turned off, and the pump stop display lamp PL2 is turned on.

That is, the motor IM is operated for the operation delay time (5M) of the timer 88PT2, and the lubricating oil is supplied to the engine by the priming pump.

Contact 88P ₂ is ON when motor IM is stopped
Therefore, the timer 88PT1 is activated again,
When the operation delay time (8H) elapses, the motor IM is operated for the operation delay time (5M) of the timer 88PT2 as described above.
Is driven.

As described above, the operation changeover switch 43P
Is in the "automatic" side 43P _A , and the relay AT
While the PX (FIG. 2) is not operating and the contacts ATPX ₁ , ATPX ₂ are in the state of FIG. 1, that is, the delay operation time (240H) (regular priming period) of the timer AT (FIG. 2) is shown in FIG. Run (5M) and stop (8
Repeat H).

Referring to FIG. 2, on the other hand, since the generator is not in operation, the low speed detection relay contact 1 of the generator board 2 is
4LL and 14LX are in the OFF state. Then, when the operation changeover switch 43P is changed over to the "automatic" side, the timer AT controls the auxiliary contacts AX and the generator board auxiliary circuit (air compressor) in which the generator board operation changeover switch is on the "automatic" side. Automatic operation side switch 43A, AC shortage relay auxiliary contact 27
R1, operation changeover switches "automatic" side contacts 43 P _A2, contacts 14LPX ₁ relay 14LPX, power line PC via the contact ATRUX ₁ relay ATRUX, is energized by a control voltage of NC.

The timer AT operates in a delayed manner, and the contact AT ₁ becomes O.
Then, the relay ATX is energized via the contact AT15T ₁ and self-held at the contact ATX ₁ , and at the same time, the contact AT
The relay ATPX is energized via 15T ₁ and 88P5MX ₂ , and the contacts ATPX ₁ and ATPX ₂ of FIG.
The F state is switched, and the regular priming operation is completed. At this time, the contact ATPX ₂ turns off and the timer 88
The circuits of PT1, 88PT1X, 88PT2 (FIG. 1) are separated. At the same time, when the contact ATPX ₁ is turned on, the electromagnetic contactor 88P operates, the motor IM is driven, and the automatic turning (FIG. 4) is started.

The relay 88 simultaneously electromagnetic contactor 88P timer 88P5MT is energized by delay operation by ON of contacts 88P ₅ of (5M) Then, the contact 88P5MT ₂
The P5MX is energized and self-held by the contact 88P5MX ₁ , and the relay ATP by the contact 88P5MX ₂ being turned off.
Since X returns and the contact ATPX ₁ turns off, the electromagnetic contactor 88P returns and the motor IM stops. At the same time, the relay connected to the line B is energized by the contact 88P5MT ₁ and the timer AT5T delays (5S), and the contact AT
When 5T ₂ is turned off, the relay ATRUX is restored and contact A
The timer AT circuit is turned off by TRUX ₁ . The timer AT15T is after energizing delay operation (15S), to return the relay ATX by contact AT15T _1, line A by OFF of the contacts ATX _1, the voltage of the B is turned OFF. Therefore, relay ATSOX is energized for the delay operation time of timer AT15T.

Thus, the relays ATRUX and ATSO
From the contact points ATRUX ₂ and ATSOX ₁ (FIG. 3) of X to the engine start air valve and the fuel stop solenoid from the stop of the motor IM to the delay operation time of the relays AT5T and AT15T (5
S, 15S) is output (FIG. 4). When the engine start air valve is energized and the engine rotates at a low speed, the contact 14LPX1 is turned off. Since the timer AT is activated by the return of the relay ATRUX, the next regular priming starts from this time.
The counter C is operated by the contact ATX _{2 and the} number of auto-turning is recorded. When a power failure occurs, the generator will be automatically operated by the generator control panel and the relay A
Since the energizing circuit of T is turned off, the auto-turning circuit does not operate.

As described above, by putting the operation changeover switch 43P on the "automatic" side, the regular priming and the auto-turning can be automatically repeated. Further, if the auto return switch BS-AT is turned on, auto turning can be performed at any time.

Embodiment 2 As shown in FIG. 4, the above is an example in which the engine is rotated by energizing the start air valve and the stop solenoid after the priming pump is stopped, but as shown in FIG. Immediately before stopping the priming pump, the start air valve and the stop solenoid may be energized to rotate the engine. The auto-turning control circuit in that case is shown in FIG. In the figure, the same components as those shown in FIG. 2 are designated by the same reference numerals. The lubricating oil priming pump control circuit and output circuit are shown in FIGS.
Use the circuit of. The electromagnetic contactor 88P of FIG.
The _one having 8P _{1 to} 88P ₆ is used.

Referring to FIG. 5, the relay 88P5MX of FIG.
The electromagnetic contactor 88 between the line A and the power supply line NC.
Timer 88P4M via contact 88P ₆ of P (FIG. 1)
T is connected and relays ATX and ATPX are connected to timer 88P5
Connected between line A and the power supply line NC via the contact 88P5MT ₃ of MT. Further, the relay ATSOX is connected to the line B between the power supply lines NC via the contact AT15T _{2 of the} timer AT15T. Other configurations are the same as those in FIG.

The operation of auto turning will be described. Timer AT delays (200H) and contacts AT ₁
When ON, relay AT via contact 88P5MT ₃
X and ATPX are energized, and relay A is turned on by contact ATX _1.
TX is self-held and the contact ATPX ₁ (FIG. 1) energizes the electromagnetic contactor 88P. Turning ON the contact 88P ₁ causes the priming pump motor IM to rotate, and the contacts 88P ₅ and 88P ₆ cause the timer 88P 5MT and 88P4MT is activated.

The timer 88P4M operates after 4M and contacts 8
When 8P4MT ₁ turns on, timers AT5T and AT1
5T is energized and contacts AT5T ₂ and AT15T ₂ are OF
Relays ATRUX and AT between 5S and 15S until F
SOX energized, contacts ATRUX ₂ and ATSOX
_The start air valve and stop solenoid are energized via ₁ (FIG. 3). After that, when the timer 88P5MT operates and the contact 885MT ₃ turns off, the relays ATX, A
TPX is restored and its contacts ATX ₁ and ATPX ₁ are turned off
Ends auto turning.

Therefore, as shown in FIG. 6, immediately before the priming pump for auto-turning is stopped, the starting air valve and the stop solenoid can be operated to rotate the engine to supply the lubricating oil.

In the above, the engine starting method is the relay AT.
It is an air motor system in which the starting air valve is controlled by the RUX and the air motor is rotated by compressed air, but in the case of the cell motor system in which the cell motor is rotated by a battery, the relay ATRUX is used.
The power switch of the starter motor may be controlled by. Also,
The time of each timer is not limited to the above.

[0038]

Since the present invention is configured as described above, the following effects can be obtained.

(1) Maintenance costs are reduced because no technician is required.

(2) Since the generator is not operated, there is no fuel consumption. As a result, engine pollution, vibration, noise, and exhaust gas are zero or very small.

(3) Since lubricating oil is supplied by auto turning and the engine is rotated at low speed by starting compressed air, lubricating performance is improved.

(4) Since the number of operations of the turning device can be surely displayed and grasped, the reliability of maintenance is improved.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of a lubricating oil priming pump control circuit.

FIG. 2 is an auto-turning control circuit diagram of starting after pump is stopped.

FIG. 3 is an output circuit diagram from the auto-turning control panel to the generator panel.

FIG. 4 is an auto-turning flow chart.

FIG. 5 is an auto-turning control circuit diagram for starting during pump operation.

FIG. 6 is an auto-turning flow chart.

[Explanation of symbols]

IM ... Priming pump motor 43P ... Manual / automatic operation changeover switch 88P ... Electromagnetic contactor for pump 88PT1 ... Pump delay time setting operation delay timer for regular priming 88PT2 ... Pump operation time setting operation delay timer for regular priming 88P4MT ... Timer for setting the time until the electric valve is activated 88P5MT ... Operation delay timer for setting pump operating time of auto turning AT ... Operation delay timer for setting regular priming period AT5T ... Operation delay timer for setting engine air pressure start air valve energizing time AT15M … Operation delay timer for setting fuel stop solenoid energizing time ATRUX… Engine air pressure starting air valve energizing relay ATSOX… Fuel stop solenoid energizing relay ATX… Generator panel auto turning display relay C… Auto turning Counter for recording the number of times PL1 ... Lamp for priming pump operation display PL2 ... Lamp for priming pump stop display PL3 ... Lamp for automatic turning display

Claims (2)

[Claims] 1. An auto-turning device for an engine having a regular priming operation circuit for periodically operating a priming pump to supply lubricating oil to the engine while the engine is stopped to maintain the lubricating performance of the engine. The circuit that operates the priming pump for a predetermined time after the regular priming operation, the circuit that shuts off the fuel supply of the engine for a short time immediately before the end of the priming pump operation or immediately after the operation is stopped, and the time during which the fuel supply is shut off. And a circuit for operating the engine start aid for a short time to rotate the engine at a low speed for a short time, and improving the lubrication performance of the engine without consuming fuel. 2. The automatic turning device according to claim 1, further comprising a turning device operation frequency indicator.