SU1202957A1 - Ship heating system - Google Patents

Description

This invention relates to shipbuilding, in particular to shipboard fuel systems.

The purpose of the invention is to enhance the functionality by prioritizing the emptying of additional fuel tanks.

FIG. 1 shows the electrical circuit of the ship fuel system; Fig. 2 shows its hydraulic circuit.

The system comprises a pump 1, hydraulically connected to the receiving valve 2-4, sensors 5-8 lower and sensors 9-12 upper fuel levels, a pressure sensor 13 installed at the outlet of the pump 1 electrically connected to the remote start magnetic actuator 14 and stopping of this pump, electropneumatic distributors (ESR) 15-17, electrically connected with low level sensors 6-8 and receiving valves 2-4, two-way switch 18 with Automatic position, while the position automatic output is electrically connected through pressure sensor 13 to element 19 delay. Pump 1 has a receiving 20 and pressure 21 pipelines. The system also contains a spacer fuel tank to tank 22 and additional tanks 23–25, connected via receiving valves 2–4, respectively, to the receiving pipe 20 of the fuel pump 1, the pressure pipe 21 of which is connected to the fuel supply tank 22. On the pressure pipe 21, a pressure sensor 13 is installed, and in the supply 22 and additional 23-25 fuel tanks, sensors 5–8 and lower sensors 9–12, respectively, are installed.

Position output The automatic two-position switch 18 through the opening contact of sensor 9 of the upper level of the fuel tank 22 is connected to the first terminals of the first closing contacts of sensors 6-8 of the lower level of the fuel tanks 23-25, the second terminals of the first closing contacts of each sensor 6- Level 8 is connected through the first closing contact of the detector of the receiving valve 2-4 to the Open input of the corresponding EPR 15-17 and the first output of the second closing contact of the sensor 6-8 of the lower level with answer

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23-25 for an additional fuel tank. The first terminals of the second closing contacts of the detectors of the receiving valves 2-4 are interconnected and connected via the opening contact of the sensor 5 of the lower level of the fuel tank 22 to the position output. Two-way switch 18, the specified output of which is also connected via the opening contact 13 of the pressure sensor, delay element 19 to the input Stop magnetic actuator 14 fuel pump 1.

The second terminals of the second closing contacts of the signaling devices of the receiving valves 2-4 are also interconnected and connected to the input. Start of the magnetic actuator 14 of the fuel pump 1. The first terminals of the second closing contacts of the signaling devices of the receiving valves 2-4 are additionally connected to the second output of the second closing and first opening contact. sensor 6 of the lower level of the supplementary fuel tank 23. The second output of the disconnecting contact of the sensor 6 of the lower level is connected to the second terminal of the second closing contact. oc contact and the first terminal of the contact sensor 7 razmykayuschegos lower layer popolnitelnoy fuel tank 24. The second terminal razmykayuschegos sensor contact 7 of the lower layer is connected to the second terminal of the second lower layer razmykayuschegos 8 popolnitelnoy contact sensor of the storage tank 25.

In the system, for the purpose of simplifying the scheme, the unipolar transmission principle is shown, i.e. A signal is applied, for example, positive polarity along the circuits indicated in Fig. 1. The second pole (negative polarity) can be connected directly to the second terminals of the windings of the EPR electromagnets 15-17 and the pulse relays of the magnetic starter 14.

The delay element 19 is set to convert a constant signal into a pulse of the required duration to ensure the topological survivability of the system, i.e. control capabilities: by a pump 1 from local posts through

remote buttons in case of emergency.

In the system, in order to ensure ship's stability, a certain program of emptying the Additional fuel tanks 23-25 is provided for, namely: first emptying, for example, an additional fuel tank 23, then 24 and 25. The number of additional fuel tanks on ships is significantly greater than in the considered An example of the system, but to explain the proposed construction principle, it suffices to consider the program of emptying three additional fuel tanks 23-25.

The fuel tank tank 22 in the system is designed to provide fuel to the ship’s diesel or gas turbine installation directly and therefore it must contain fuel at all times, which is ensured by the system.

Considering that remote control and presentation of information about the state of the actuators, the upper and lower levels in fuel tanks are built according to well-known principles, they are not considered in the proposed system.

The system uses two-position intake valves that open when the signal is applied to their electropneumatic distributors. When the signal is removed, these valves close.

The capacity of each additional fuel tank 23-25 considerably exceeds the capacity of the fuel tank 22.

The system works as follows.

With drained consumable 22 and additional 23-25 fuel tanks, the contacts of the sensors 5-8 of the lower ones and the sensor 9 of the upper levels have the condition indicated in Fig. 1.

Fuel tanks 22–25 are filled until first sensors 5–8 and then sensors 9–12 of the upper levels are activated. When tanks are filled 22-25, the contacts of their sensors 5-9 levels assume the opposite state indicated in Fig. 1.

The fuel pump 1 is not working, the valves are closed and, therefore, the closing contact of the sensor 132029574

pressure is also closed. Closing sensor contacts of receiving valves 2-4 are open. When power is applied to the system and the two-position switch 18 is set to the position Automat, a signal is output from its output, which is fed through the open contact of the pressure sensor 13 and the input delay element 19

10 Stop magnetic starter 14. Thus, the system provides a duplication of the command to complete. the process of transferring fuel to the fuel tank consumable.

5 When starting up a diesel or gas turbine installation, fuel consumption from the fuel tank tank 22 begins.

2Q 9 is the upper level, which closes its closing contact, and then the low level sensor 5 is activated, which also closes its closing contact. In this case, a continuous signal from the position of the Two-position switch 18 through the opening contact of the low level sensor 5 and through the second closing contact of the low level sensor 6 enters the Open ESR 15, which is activated and opens the receiving valve 2. Both short-circuiting contacts of the valve's signaling device are closed .

Through the second closing contact of this detector, a signal passes to the input. Starting the magnetic actuator 14, which starts the fuel pump 1. Simultaneously, the EPR 15 becomes self-locking through the first closing contact of the detector of the receiving valve 2 along the following circuit: position output Automatic two-position switch 18, upstream sensor 9 contact

Level 5 of fuel tank 22, the first closing contact of the sensor 6 of the lower level of the auxiliary fuel tank 23, the first closing contact of the alarm indicator of the receiving valve 2, the inlet to open the EPR 15. When the fuel pump 1 is turned on, its pressure pipe 21 creates a necessary pressure. Pressure sensor 13 triggers and

55, its contacts are opened, which brings the delay element 19 to the initial state, allowing to receive a new continuous signal and form 35

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tpoBaTb it in a pulse to stop the fuel pump 1.

Thus, the process of filling the fuel tank tank 22 with fuel has begun. As this tank is filled, the low level sensor 5 is first triggered, which by means of its opening contact opens the fuel pump 1 start circuit and the EPR 15 opening circuit of the receiving valve 2, the receiving valve 2 remains open, since the EPR blocking circuit 15 remains. Opening the continuous start signal circuit of the fuel pump 1 when the low level sensor 5 is triggered allows the delay element 19 not to be set, since this signal is short-term (pulsed).

When filling the fuel tank tank 22 before the operation of the upper level sensor 9, it opens its opening contact, i.e. opens the EPR 15 self-blocking circuit, which is de-energized, which leads to the closing of the receiving valve on channel 2 and the opening of the contacts of its signaling device.

Since all receiving valves 2-4 are closed, the fuel pump does not create pressure at the head, which leads to the operation of the pressure sensor 13 and the closure of its open contact. Signal from the position The auto-position switch 18 passes through the specified contact and enters the delay element 19. The latter forms a short-term pulse, which is fed to the input of the stop EPR 17, which leads to. It stops the fuel pump 1-.

This is how the process of filling the fuel tank 22 with fuel from the secondary fuel tank 23 is carried out.

As the fuel is repeatedly transferred from the fuel tank 23 to the fuel tank tank 22, it is completely emptied and its low level sensor 6 is activated and opens both locks 10

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contact and closes the break contact. This may occur when the fuel in the fuel supply tank 22 has not yet reached the upper level. However, in this case, the self-blocking circuit of the ESR 15 is opened by means of the second closing contact of the sensor 6 of the lower level of the auxiliary fuel tank 23. This causes the receiving valve 2 to close and the pressure at the pressure of the fuel pump 1 to close, i.e. to stop him.

When the consumable fuel tank 22 is emptied and before the low level sensor 5 triggers, a supplementary fuel tank 24 is connected to the receiving pipeline 20 by opening the receiving valve 3 according to the following circuit: position switch Autoswitch switch 18 level contact 5, break contact 6 of the lower one level, the second closing contact of the sensor 7 of the lower level of the additional tank 24, the input Open ESR 16, which is triggered and opens the receiving valve 3. And through the first closing contacts of the sensor 5 of the lower level and the signaling device of the valve 3, the EPR 16 becomes self-blocking (the circuit is similar when EPR 15 is self-blocking). Through the second closing contact of the detector of the receiving valve 3 passes a signal to the input. Starting the magnetic actuator 14, which is activated and starts the fuel pump 1 (the start of the fuel pump 1 is similar to the start that occurs when the additional fuel tank 23 is empty).

When the additional fuel tank 24 is emptied before the low-level sensor 7 is triggered, the additional fuel tank 25 is connected to the receiving pipeline 20 by opening the receiving valve 4 in the same way as the additional fuel tank 24.

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Compiled by Y. Serov Editor E. Papp Tehred T, Tulik Proofreader V. But ha

Order 8374/24 Circulation 434 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. A / 5

Branch ShSh Patent, g, Uzhgorod, Proekl St., 4

Claims (1)

A SHIP FUEL SYSTEM containing a delay element, a two-position switch with positions '' Neutral is an automaton, a position output is connected via an opening contact of the upper level sensor of the fuel supply tank to the first terminals of the first closing contacts of the lower level sensors of all refill fuel tanks, and the second conclusions of the indicated the contacts of each sensor of the lower level of refill fuel tanks are connected through the first closing contact of the signaling device of the receiving valve and to the output Open the corresponding electropneumatic distributor and the first output of the second closing contact of the lower level sensor of the corresponding refill fuel tank, the first outputs of the second closing contacts of the signaling devices of all receiving valves are connected to each other and connected to the second output of the second closing contact of the lower level sensor of the first refill fuel tanks, and the second conclusions of the second closing contacts of the signaling devices of all receiving valves are also interconnected connected to the start input of the magnetic starter of the fuel pump, the Stop input of this starter is connected through the sounding element to the first output of the opening contacts of the pressure sensor, characterized in that, in order to expand the functionality by setting the priority for emptying refill fuel tanks, the position output is connected to the on-off switch the second output of the opening contact of the pressure sensor, and through the opening contact of the lower level sensor of the fuel supply tank s - with the second output of the closing and the first output of the opening contacts of the lower level sensor of the first refill fuel tank, the second output of the opening contact of this sensor is connected to the second output of the opening and first output of the lower level sensor of the second refill fuel tank, the second output of the opening contact of which is connected to the second conclusion of the closing contact of the lower level sensor of the third replenishment of the fuel tank. SU -., 1202957