阅读说明：本技术 一种船舶甲醇舱柜注入系统及方法 (Ship methanol cabin cabinet injection system and method ) 是由 晏志清 王正钧 晏二华 于 2019-10-22 设计创作，主要内容包括：本发明旨在提供一种安全可靠且使用方便的船舶甲醇舱柜注入系统及方法。本发明包括甲醇舱和注入模块,所述注入模块包括依次连接的注入头、注入截止阀、注入电磁阀以及第一遥控截止阀,所述第一遥控截止阀的输出端与所述甲醇舱连接,所述甲醇舱内部设置有从上向下依次分布的液位浮球控制器和液位报警开关,所述甲醇舱外部设置有与所述液位报警开关电信号连接的声光警报器,所述液位浮球控制器与所述注入电磁阀电性连接。本发明应用于船舶甲醇注入系统的技术领域。(The invention aims to provide a safe and reliable injection system and method for a ship methanol cabin cabinet, which are convenient to use. The methanol tank comprises a methanol tank and an injection module, wherein the injection module comprises an injection head, an injection stop valve, an injection electromagnetic valve and a first remote control stop valve which are sequentially connected, the output end of the first remote control stop valve is connected with the methanol tank, a liquid level floating ball controller and a liquid level alarm switch which are sequentially distributed from top to bottom are arranged in the methanol tank, an acousto-optic alarm which is in electrical signal connection with the liquid level alarm switch is arranged outside the methanol tank, and the liquid level floating ball controller is electrically connected with the injection electromagnetic valve. The invention is applied to the technical field of methanol injection systems of ships.)

1. A boats and ships methyl alcohol cabin cabinet injection system, includes methyl alcohol cabin (1), its characterized in that: the injection module comprises an injection head (2), an injection stop valve (3), an injection solenoid valve (4) and a first remote control stop valve (5) which are connected in sequence, the output end of the first remote control stop valve (5) is connected with the methanol cabin (1), a liquid level floating ball controller (6) and a liquid level alarm switch (7) which are distributed from top to bottom in sequence are arranged inside the methanol cabin (1), an acousto-optic alarm (8) is arranged outside the methanol cabin (1) and is connected with the liquid level alarm switch (7) through electric signals, and the liquid level floating ball controller (6) is electrically connected with the injection solenoid valve (4).

2. The marine methanol tank injection system of claim 1, wherein: the injection system of the methanol tank cabinet of the ship further comprises an inerting module, the inerting module comprises a nitrogen supply device (9), a pressure-reducing check valve (10), a nitrogen electromagnetic valve (11) and a stop check valve (12) which are connected in sequence, the output end of the stop check valve (12) is connected with the methanol cabin (1), the inerting module also comprises a second remote control stop valve (13), the second remote control stop valve (13) is connected with the output end of the pressure reducing check valve (10), the output end of the second remote control stop valve (13) is connected with a nitrogen hose (14), the output end of the nitrogen hose (14) is provided with a first quick joint (15), a second quick joint (16) is arranged between the injection electromagnetic valve (4) and the first remote control stop valve (5), the second quick coupling (16) is adapted to the first quick coupling (15).

3. The marine methanol tank injection system of claim 2, wherein: and a pressure vacuum valve (17) is arranged on the methanol cabin (1).

4. The marine methanol tank injection system of claim 2, wherein: the nitrogen supply equipment (9) is a nitrogen making machine or a nitrogen bottle.

5. The marine methanol tank injection system of claim 3, wherein: and a drain valve (18) is further arranged between the injection electromagnetic valve (4) and the first remote control stop valve (5), and the output end of the drain valve (18) is connected with a sump of a ship.

6. The injection method of the injection system of the methanol tank cabinet of the ship based on claim 5 is characterized by comprising the following steps:

A. before the first injection, the first quick connector (15) is connected with the second quick connector (16), then the first remote control, the pressure reduction check valve (10) and the second remote control stop valve (13) are opened in sequence, nitrogen stored in the nitrogen supply device (9) is filled into the methanol cabin (1), a pipeline and the methanol cabin (1) are filled with the nitrogen, air is discharged from the pressure vacuum valve (17), and after the nitrogen is filled, the second remote control stop valve (13) is closed and the first quick connector (15) and the second quick connector (16) are disconnected;

B. after inerting is finished, an external methanol filling pipeline is connected with the injection head (2), the injection stop valve (3) and the injection electromagnetic valve (4) are opened, and methanol is injected into the methanol cabin (1) through a pipeline;

C. when the methanol is filled to the position of the liquid level alarm switch (7), the liquid level alarm switch (7) feeds back an electric signal to enable the sound-light alarm (8) to give an alarm, and the external supply end stops filling; when the liquid level alarm switch (7) is in fault and the acousto-optic alarm (8) cannot give an alarm, the liquid level of methanol can cross the liquid level alarm switch (7), and after the liquid level rises and reaches the liquid level floating ball controller (6) and is triggered, the liquid level floating ball controller (6) feeds back an electric signal to enable the injection electromagnetic valve (4) to be closed to stop the injection of the methanol;

D. after the filling is stopped, after the filling stop valve (3) is closed, connecting the first quick connector (15) and the second quick connector (16) and opening the second remote control stop valve (13), blowing the residual methanol in the pipeline into the methanol cabin (1) through nitrogen, then closing the first remote control stop valve (5) and opening the filling stop valve (3), and blowing the methanol back into the supply end through the nitrogen;

E. and after purging is finished, closing the injection stop valve (3), then opening the drain valve (18) to enable residual methanol to flow into a dirty oil tank of the ship, and finally separating an external methanol injection pipeline from the injection head (2).

Technical Field

The invention is applied to the technical field of a methanol injection system of a ship, and particularly relates to a methanol cabin cabinet injection system and method of a ship.

Background

On ships for transporting methanol or ships using methanol as marine engine fuel, due to the characteristics of low flash point, volatility, toxicity and the like of methanol, the methanol injection must be done with a perfect security work to prevent poisoning or explosion risks caused by leakage in the methanol injection process, so that the methanol fuel injection needs to be done with a leakage-proof related work.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a safe, reliable and convenient-to-use system and method for injecting a methanol tank cabinet of a ship.

The technical scheme adopted by the invention is as follows: the methanol tank comprises a methanol tank and an injection module, wherein the injection module comprises an injection head, an injection stop valve, an injection electromagnetic valve and a first remote control stop valve which are sequentially connected, the output end of the first remote control stop valve is connected with the methanol tank, a liquid level floating ball controller and a liquid level alarm switch which are sequentially distributed from top to bottom are arranged in the methanol tank, an acousto-optic alarm which is in electrical signal connection with the liquid level alarm switch is arranged outside the methanol tank, and the liquid level floating ball controller is electrically connected with the injection electromagnetic valve.

It is visible by above-mentioned scheme, through setting up liquid level alarm switch is about to fill full warning, gives through the feedback signal of telecommunication the acousto-optic alarm sends out the police dispatch newspaper, simultaneously through setting up liquid level floating ball controller realizes that liquid level alarm switch is malfunctioning or unmanned value is automatic shutdown when keeping watch the injection solenoid valve, and then avoid excessive injection to make internal pressure too big appear leaking, reach safe and reliable and convenient to use's effect. Through remote control first remote control stop valve can realize stopping the injection of methyl alcohol at any time, need not the manual work under the emergency and goes to the shut-off valve, and the response is quick and safe.

One preferred scheme is, boats and ships methyl alcohol cabin cabinet injection system still includes the inerting module, the inerting module is including the nitrogen gas supply equipment, decompression check valve, nitrogen gas solenoid valve and the stop check valve that connect gradually, the output of stop check valve with the methyl alcohol cabin is connected, the inerting module still includes the second remote control stop valve, the second remote control stop valve with the output of decompression check valve is connected, the output of second remote control stop valve is connected with the nitrogen hose, the output of nitrogen hose is provided with first quick-operation joint, inject the solenoid valve with be provided with the second quick-operation joint between the first remote control stop valve, the second quick-operation joint with first quick-operation joint looks adaptation.

It is seen by above-mentioned scheme that through setting up the inerting module is right methanol cabin and pipeline carry out the inerting and handle, through nitrogen gas supply equipment provides compressed nitrogen gas, through setting up second remote control stop valve, nitrogen gas hose and first quick-operation joint realize the pipeline with the nitrogen gas in methanol cabin is filled, through setting up the decompression check valve nitrogen gas solenoid valve and it is direct right to end the check valve realization the methanol cabin carries out nitrogen gas and fills, improves packing efficiency.

Further preferably, a pressure vacuum valve is arranged on the methanol cabin.

According to the scheme, the pressure vacuum valve is arranged to output the gas in the methanol cabin, so that the pressure inside and outside the methanol cabin is balanced.

Further preferably, the nitrogen supply device is a nitrogen generator or a nitrogen cylinder.

According to the scheme, the nitrogen making machine is applied to large ships, and the nitrogen cylinder is applied to small ships.

Still further preferably, a drain valve is further arranged between the injection solenoid valve and the first remote-control stop valve, and an output end of the drain valve is connected with a sump of the ship.

According to the scheme, residual methanol in the pipeline is discharged by arranging the discharge valve.

The injection method comprises the following steps:

A. before the first injection, performing inerting treatment, connecting the first quick connector with the second quick connector, then sequentially opening the first remote control, the pressure reduction check valve and the second remote control stop valve to enable nitrogen stored in the nitrogen supply equipment to be filled into the methanol cabin, enabling the nitrogen to fill a pipeline and the methanol cabin and enable air to be discharged from the pressure vacuum valve, and after the nitrogen is filled into the methanol cabin, closing the second remote control stop valve and disconnecting the first quick connector and the second quick connector;

B. after the inerting is finished, an external methanol filling pipeline is connected with the injection head, the injection stop valve and the injection electromagnetic valve are opened, and the methanol is injected into the methanol cabin through a pipeline;

C. when the methanol is filled to the position of the liquid level alarm switch, the liquid level alarm switch feeds back an electric signal to enable the sound-light alarm to give an alarm, and the external supply end stops filling; when the liquid level alarm switch fails to make the acousto-optic alarm unable to give an alarm, the liquid level of methanol can cross the liquid level alarm switch, and after the liquid level rises and reaches the liquid level floating ball controller and is triggered, the liquid level floating ball controller feeds back an electric signal to close the injection electromagnetic valve to stop the injection of methanol;

D. after the filling is stopped, after the filling stop valve is closed, connecting the first quick connector and the second quick connector, opening the second remote control stop valve, blowing the residual methanol in the pipeline into the methanol cabin through nitrogen, then closing the first remote control stop valve, opening the filling stop valve, and blowing the methanol back into the supply end through the nitrogen;

E. and after purging is finished, closing the injection stop valve, then opening the discharge valve to enable residual methanol to flow into a dirty oil tank of the ship, and finally separating an external methanol injection pipeline from the injection head.

According to the scheme, the method can ensure that the oxygen concentration in the methanol cabin is kept at a lower level during the injection process, so that the injection is safer. And meanwhile, the residual fuel in the pipeline after injection is prevented from leaking.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

As shown in fig. 1, in this embodiment, the invention includes a methanol tank 1 and an injection module, the injection module includes an injection head 2, an injection stop valve 3, an injection solenoid valve 4 and a first remote control stop valve 5, which are connected in sequence, an output end of the first remote control stop valve 5 is connected to the methanol tank 1, a liquid level float ball controller 6 and a liquid level alarm switch 7 are arranged inside the methanol tank 1, which are distributed in sequence from top to bottom, an audible and visual alarm 8 electrically connected to the liquid level alarm switch 7 is arranged outside the methanol tank 1, and the liquid level float ball controller 6 is electrically connected to the injection solenoid valve 4.

In this embodiment, boats and ships methyl alcohol cabin cabinet injection system still includes the inerting module, the inerting module is including the nitrogen gas supply apparatus 9, decompression check valve 10, nitrogen gas solenoid valve 11 and the stop check valve 12 that connect gradually, the output of stop check valve 12 with methyl alcohol cabin 1 is connected, the inerting module still includes second remote control stop valve 13, second remote control stop valve 13 with the output of decompression check valve 10 is connected, the output of second remote control stop valve 13 is connected with nitrogen hose 14, nitrogen hose 14's output is provided with first quick-operation joint 15, inject solenoid valve 4 with be provided with second quick-operation joint 16 between the first remote control stop valve 5, second quick-operation joint 16 with first quick-operation joint 15 looks adaptation.

In this embodiment, a pressure vacuum valve 17 is disposed on the methanol tank 1.

In the present embodiment, the nitrogen gas supply device 9 is a nitrogen generator or a nitrogen gas cylinder.

In this embodiment, a drain valve 18 is further disposed between the injection solenoid valve 4 and the first remote-control stop valve 5, and an output end of the drain valve 18 is connected to a sump of a ship.

The injection method comprises the following steps:

A. before the first injection, performing inerting treatment, connecting the first quick connector 15 with the second quick connector 16, then opening the first remote control, the pressure reduction check valve 10 and the second remote control stop valve 13 in sequence, so that nitrogen stored in the nitrogen supply device 9 is filled into the methanol cabin 1, the nitrogen can fill the pipeline and the methanol cabin 1, air is discharged from the pressure vacuum valve 17, and after the inert treatment is completed, closing the second remote control stop valve 13 and disconnecting the first quick connector 15 and the second quick connector 16;

B. after the inerting is finished, an external methanol filling pipeline is connected with the injection head 2, the injection stop valve 3 and the injection electromagnetic valve 4 are opened, and the methanol is injected into the methanol cabin 1 through a pipeline;

C. when the methanol is filled to the position of the liquid level alarm switch 7, the liquid level alarm switch 7 feeds back an electric signal to enable the sound-light alarm 8 to give an alarm, and the external supply end stops filling; when the liquid level alarm switch 7 fails to make the acousto-optic alarm 8 unable to give an alarm, the liquid level of methanol will cross the liquid level alarm switch 7, and after the liquid level rises and reaches the liquid level floating ball controller 6 and is triggered, the liquid level floating ball controller 6 feeds back an electric signal to close the injection electromagnetic valve 4 to stop the injection of methanol;

D. after the filling is stopped, after the filling stop valve 3 is closed, the first quick connector 15 and the second quick connector 16 are connected, the second remote control stop valve 13 is opened, the residual methanol in the pipeline is blown into the methanol cabin 1 through nitrogen, then the first remote control stop valve 5 is closed, the filling stop valve 3 is opened, and the methanol is blown back into the supply end through the nitrogen;

E. after purging is finished, the injection stop valve 3 is closed, then the drain valve 18 is opened to enable residual methanol to flow into a dirty oil tank of a ship, and finally an external methanol injection pipeline is detached from the injection head 2.