Seawater backflow alarm device and method for smoke exhaust pipe

Abstract

The invention discloses a seawater backflow alarm device for a smoke exhaust pipe, belongs to the technical field of ships, and solves the problem that an existing alarm device is not timely in processing. The device comprises a box body, an alarm and a control system, the box body is filled with liquid, the top and the bottom of the box body are provided with an air inlet pipe and an air outlet pipe which are communicated with the box body respectively, and the box body is further provided with a first liquid level sensor; a water pump is further arranged on the upper portion of the inner wall of the box body, a water inlet pipe corresponding to the water pump extends to the lower portion of the box body, a second liquid level sensor is further arranged on the lower portion of the box body, and the first liquid level sensor, the alarm, the water pump, the stop valve and the second liquid level sensor are all electrically connected with the control system. The seawater backflow alarm device for the smoke exhaust pipe meets the requirement for alarming and prompting workers, and meanwhile can respond in time to discharge backflow seawater in time. The invention further discloses a smoke exhaust pipe seawater backflow alarm method, backflow seawater is rapidly discharged, and normal operation of equipment is ensured.

Description

Technical Field

[0001] The present invention relates to the field of ship technology, and more particularly to a smoke exhaust pipe seawater backflow alarm device and method. Background Art

[0002] In the process of ship design and manufacturing, in order to monitor the situation where a large amount of seawater flows back from the exhaust pipe into the equipment and causes equipment damage, it is generally necessary to add a seawater backflow alarm device in the exhaust pipe. The existing seawater backflow alarm device is relatively simple, generally adding a liquid level sensor in the exhaust pipe. When a large amount of seawater flows back into the exhaust pipe, the liquid level sensor detects that the liquid level rises, and an alarm prompt is issued, so that the on-duty personnel can find the problem in time.

[0003] Although the existing seawater backflow alarm device can detect seawater backflow, it still needs to be handled by staff. If the staff cannot handle it in time due to other reasons, seawater will still enter the equipment, causing damage to the equipment, and there is a problem of untimely response.

[0004] Therefore, it is urgent to develop and design a smoke exhaust pipe seawater backflow alarm device and method to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art. One of the purposes of the present invention is to provide a smoke exhaust pipe seawater backflow alarm device that meets the requirements of alarm prompts for staff and can also respond in time to discharge the backflowing seawater in time.

[0006] The second purpose of the present invention is to provide a smoke exhaust pipe seawater backflow alarm method to quickly discharge the backflowing seawater and ensure the normal operation of the equipment.

[0007] In order to achieve the above-mentioned purpose one, the present invention provides a smoke exhaust pipe seawater backflow alarm device, including a box body, an alarm and a control system, the box body is filled with liquid, the top and bottom of the box body are respectively provided with an air inlet pipe and an air outlet pipe connected thereto, the air inlet pipe is connected to the smoke exhaust pipe, and the air inlet pipe extends into the liquid at the bottom of the box body, and the air outlet pipe extends into the box body above the liquid, a first liquid level sensor is also provided on the box body, and the top end of the air outlet pipe is located 5 to 10 mm below the probe of the first liquid level sensor; a water pump is also provided on the upper part of the inner wall of the box body, the water inlet pipe corresponding to the water pump extends to the lower part of the box body, and a second liquid level sensor is also provided on the lower part of the box body, a stop valve is provided on the water inlet pipe, and the water outlet pipe corresponding to the water pump penetrates to the outside of the box body, and the first liquid level sensor, alarm, water pump, stop valve and second liquid level sensor are all electrically connected to the control system.

[0008] Furthermore, the partition is an arc-shaped plate with an arc-shaped cross section, and the height of the two sides of the arc-shaped plate is greater than the height in the middle.

[0009] Furthermore, a magnet bar can be detachably mounted on the bottom of the box.

[0010] Furthermore, a T-shaped screw is provided at one end of the magnet rod, and the T-shaped screw is threadedly connected to the side wall of the box.

[0011] Furthermore, a filter screen is provided at the top of the air outlet pipe.

[0012] Furthermore, the control system and alarm are both installed in the ship's cab, and the alarm is an audible and visual alarm.

[0013] Furthermore, the air inlet pipe is connected to the smoke exhaust pipe via a connecting flange, and a connecting flange is also provided at the bottom end of the air outlet pipe outside the box.

[0014] In order to achieve the above-mentioned second objective, the present invention provides a smoke exhaust pipe seawater backflow alarm method, characterized in that it includes a smoke exhaust pipe seawater backflow alarm device, and the method comprises the following steps:

[0015] S1, the first liquid level sensor detects the liquid level height in the box in real time. When the first liquid level sensor detects that the liquid in the box is at a high level, the high level signal is fed back to the control system, and the control system controls the alarm to turn on and issue an alarm prompt;

[0016] S2, the control system controls the stop valve to open, and controls the water pump to start, and pumps the water out of the box;

[0017] S3. The second liquid level sensor detects the liquid level height in the box in real time. When the second liquid level sensor detects that the liquid in the box is at a low level signal, the low level signal is fed back to the control system. The control system controls the alarm to turn off, stops the alarm prompt, and closes the stop valve and the water pump at the same time to stop pumping water.

[0018] As a further improvement, the method further includes step S4: the staff goes to the location of the box along the exhaust path of the smoke exhaust pipe for inspection.

[0019] Beneficial Effects

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The smoke exhaust pipe seawater backflow alarm device of the present invention provides a box as a buffer on the smoke exhaust pipe, and provides a first liquid level sensor, a water pump and other components in the box. When a large amount of seawater flows back into the box, it can not only remind the staff in time, but also trigger the water pump to pump out the backflowing seawater, meeting the requirements of the alarm staff, and can also respond in time to discharge the backflowing seawater in time, so as to quickly discharge the backflowing seawater and ensure the normal operation of the equipment.

[0022] 2. The smoke exhaust pipe seawater backflow alarm device of the present invention can play the role of water sealing the air inlet pipe by pre-filling liquid into the box body. The gas discharged from the smoke exhaust pipe first contacts with the liquid and then is discharged from the air outlet pipe, which plays the role of filtering the smoke precipitation.

[0023] 3. The smoke exhaust pipe seawater backflow alarm device of the present invention has a detachable magnet bar arranged in the box body, so that the iron filings deposited at the bottom of the box body are adsorbed on the magnet bar, which facilitates the cleaning and maintenance of the box body.

[0024] 4. The smoke exhaust pipe seawater backflow alarm device of the present invention can prevent the problem of false alarm caused by the liquid in the box body contacting the first liquid level sensor during the shaking of the ship by arranging an arc-shaped partition in the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure enlargement at the center A;

[0027] Figure 3 It is an enlarged schematic diagram of the cross-sectional structure of the partition in the present invention;

[0028] Figure 4 It is a structural schematic diagram of the present invention when applied.

[0029] Wherein: 1-box, 2-alarm, 3-liquid, 4-inlet pipe, 5-outlet pipe, 6-smoke exhaust pipe, 7-first liquid level sensor, 8-water pump, 9-water inlet pipe, 10-second liquid level sensor, 11-stop valve, 12-outlet pipe, 13-partition, 14-seepage hole, 15-magnet rod, 16-T-shaped screw. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0031] See also Figure 1-4The invention discloses a smoke exhaust pipe seawater backflow alarm device, comprising a housing 1, an alarm 2 and a control system, wherein a liquid 3 is filled in the housing 1, and the liquid 3 is poured into the water in the housing 1 in advance, so as to filter the smoke and remove some particulate matter, such as rust, etc.; an air inlet pipe 4 and an air outlet pipe 5 connected thereto are respectively provided at the top and the bottom of the housing 1, which are respectively used for the inlet and outlet of the smoke, and the air inlet pipe 4 is connected with the smoke exhaust pipe 6 so as to introduce the smoke into the housing 1, and the air inlet pipe 4 extends to the liquid 3 at the bottom of the housing 1, so that the smoke is first filtered by the liquid 3 and then discharged, and the air outlet pipe 5 extends to the housing 1 above the liquid 3 to prevent the liquid 3 in the housing 1 from leaking, and a first liquid level sensor 7 is also provided on the housing 1 for detecting whether seawater backflows into the housing 1, and the top of the air outlet pipe 5 is located at the first The liquid level sensor 7 is 5 to 10 mm below the probe, and the air outlet pipe 5 is staggered with the first liquid level sensor 7 to avoid the seawater from touching the first liquid level sensor 7 when flowing back, causing the problem of false alarm; a water pump 8 is also provided on the upper part of the inner wall of the box body 1, and the water inlet pipe 9 corresponding to the water pump 8 extends to the lower part of the box body 1, and a second liquid level sensor 10 is also provided at the lower part of the box body 1, which is used to detect whether the water in the box body 1 drops to the set position, and a stop valve 11 is provided on the water inlet pipe 9 to prevent smoke from leaking from the water pump 8 and the water outlet pipe 12. The water outlet pipe 12 corresponding to the water pump 8 runs through the outside of the box body 1 to pump out water. The first liquid level sensor 7, the alarm 2, the water pump 8, the stop valve 11, and the second liquid level sensor 10 are all electrically connected to the control system, and the control system is a PLC controller to realize automatic sensing and control of drainage.

[0032] The smoke exhaust pipe seawater backflow alarm device of the present invention provides a box body 1 as a buffer on the smoke exhaust pipe, and provides a first liquid level sensor 7, a water pump 8 and other components in the box body 1. When a large amount of seawater flows back into the box body 1, it can not only promptly remind the staff, but also trigger the water pump 8 to pump out the backflowing seawater, meeting the requirements of the alarm staff, and at the same time can also respond in time to discharge the backflowing seawater in time, so as to quickly discharge the backflowing seawater and ensure the normal operation of the equipment.

[0033] At the same time, the smoke exhaust pipe seawater backflow alarm device can play the role of water sealing the air inlet pipe 4 by pre-filling the liquid 3 into the box body 1. The gas discharged from the smoke exhaust pipe 6 first contacts with the liquid 3 and then is discharged from the air outlet pipe 5, which plays the role of filtering the smoke precipitation.

[0034] Preferably, a partition 13 is further provided in the box body 1 above the liquid 3, and the partition 13 divides the upper and lower parts of the box body 1 into two cavities, wherein the air inlet pipe 4 penetrates the partition 13 and extends to the bottom of the box body 1, the air outlet pipe 5 penetrates the partition 13 and extends to the upper part of the box body 1, the water inlet pipe 9 penetrates the partition 13 and extends to the lower part of the box body 1, the probe of the first liquid level sensor 7 is located above the partition 13, the second liquid level sensor 10 is located below the partition 13, and a plurality of water seepage holes 14 are opened in the middle of the partition 13, which is the principle of a communicating vessel, so that seawater can penetrate to the top of the partition 13, and then the first liquid level sensor 7 detects the water level change. Further, the partition 13 is an arc-shaped plate with an arc-shaped cross section, and the height of the two sides of the arc-shaped plate is greater than the height in the middle.

[0035] The smoke exhaust pipe seawater backflow alarm device of the present invention can prevent the liquid 3 in the box body 1 from contacting the first liquid level sensor 7 and causing false alarms during the shaking of the ship by arranging an arc-shaped partition 13 in the box body 1.

[0036] Preferably, a magnet bar 15 is detachably mounted at the bottom of the box body 1 for absorbing iron filings. Furthermore, a T-shaped screw 16 is provided at one end of the magnet bar 15, and the T-shaped screw 16 is threadedly connected to the side wall of the box body 1 to achieve detachable installation of the magnet bar 15. A sealing ring can be provided at the step of the T-shaped screw 16 to improve the sealing between the T-shaped screw 16 and the box body 1.

[0037] The smoke exhaust pipe seawater backflow alarm device of the present invention has a detachable magnet bar 15 disposed in the box body 1, so that iron filings deposited at the bottom of the box body 1 are adsorbed on the magnet bar 15, which facilitates the cleaning and maintenance of the box body 1.

[0038] Preferably, a filter screen is provided at the top of the air outlet pipe 5 to prevent some strips of waterweed and the like from entering the box body 1 along with the backflowing seawater.

[0039] Preferably, the control system and the alarm 2 are both installed in the ship's cab, and the alarm 2 is an audible and visual alarm, which is convenient for the staff to find problems in time.

[0040] Preferably, the air inlet pipe 4 is connected to the smoke exhaust pipe 6 via a connecting flange to achieve a detachable connection. A connecting flange is also provided at the bottom of the air outlet pipe 5 outside the box body 1 to facilitate the installation of an extension pipe at the bottom of the air outlet pipe 5.

[0041] A smoke exhaust pipe seawater backflow alarm method includes the above-mentioned smoke exhaust pipe seawater backflow alarm device, and the method includes the following steps:

[0042] S1, the first liquid level sensor 7 detects the liquid level height in the box 1 in real time. When the first liquid level sensor 7 detects that the liquid in the box 1 is at a high level signal, the high level signal is fed back to the control system, and the control system controls the alarm 2 to turn on and issue an alarm prompt;

[0043] S2, the control system controls the stop valve 11 to open, and controls the water pump 8 to start, to pump the water out of the box 1;

[0044] S3, the second liquid level sensor 10 detects the liquid level height in the box body 1 in real time. When the second liquid level sensor 10 detects that the liquid in the box body 1 is at a low level signal, the low level signal is fed back to the control system, and the control system controls the alarm 2 to be turned off, stops the alarm prompt, and at the same time closes the stop valve 11 and the water pump 8 to stop pumping water.

[0045] The smoke exhaust pipe seawater backflow alarm method can quickly discharge the backflowing seawater to ensure the normal operation of the equipment.

[0046] The method further includes step S4: the staff goes to the location of the box 1 along the exhaust path of the exhaust pipe 6 to conduct an inspection, and conducts a manual re-inspection to completely eliminate the problem of seawater backflow, further ensuring the normal operation of the equipment.

[0047] The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A smoke exhaust pipe seawater backflow alarm device, characterized in that: The invention comprises a box (1), an alarm (2) and a control system, wherein the box (1) is filled with liquid (3), and the top and bottom of the box (1) are respectively provided with an air inlet pipe (4) and an air outlet pipe (5) connected thereto, wherein the air inlet pipe (4) is connected to a smoke exhaust pipe (6), and the air inlet pipe (4) extends into the liquid (3) at the bottom of the box (1), and the air outlet pipe (5) extends into the box (1) above the liquid (3), and the box (1) is also provided with a first liquid level sensor (7), and the top end of the air outlet pipe (5) is located at the first liquid level sensor (7). ) at 5 to 10 mm below the probe of the casing (1); a water pump (8) is also provided on the upper inner wall of the casing (1); a water inlet pipe (9) corresponding to the water pump (8) extends to the lower part of the casing (1); and a second liquid level sensor (10) is also provided on the lower part of the casing (1); a stop valve (11) is provided on the water inlet pipe (9); a water outlet pipe (12) corresponding to the water pump (8) penetrates to the outside of the casing (1); and the first liquid level sensor (7), the alarm (2), the water pump (8), the stop valve (11) and the second liquid level sensor (10) are all electrically connected to the control system.

2. The smoke exhaust pipe seawater backflow alarm device according to claim 1 is characterized in that: A partition (13) is also provided in the box body (1) above the liquid (3); the air inlet pipe (4) passes through the partition (13) and extends to the bottom of the box body (1); the air outlet pipe (5) passes through the partition (13) and extends to the upper part of the box body (1); the water inlet pipe (9) passes through the partition (13) and extends to the lower part of the box body (1); the probe of the first liquid level sensor (7) is located above the partition (13), and a plurality of water seepage holes (14) are opened in the middle of the partition (13).

3. The smoke exhaust pipe seawater backflow alarm device according to claim 2 is characterized in that: The partition (13) is an arc-shaped plate with an arc-shaped cross section, and the height of the two sides of the arc-shaped plate is greater than the height in the middle.

4. The smoke exhaust pipe seawater backflow alarm device according to claim 1, characterized in that: A magnet bar (15) is detachably mounted on the bottom of the box (1).

5. The smoke exhaust pipe seawater backflow alarm device according to claim 4, characterized in that: One end of the magnet rod (15) is provided with a T-shaped screw (16), and the T-shaped screw (16) is threadedly connected to the side wall of the box body (1).

6. The smoke exhaust pipe seawater backflow alarm device according to claim 1, characterized in that: The top of the air outlet pipe (5) is also provided with a filter screen.

7. The smoke exhaust pipe seawater backflow alarm device according to claim 1, characterized in that: The control system and the alarm (2) are both installed in the ship's wheelhouse, and the alarm (2) is an audible and visual alarm.

8. A smoke exhaust pipe seawater backflow alarm device according to any one of claims 1 to 7, characterized in that: The air inlet pipe (4) is connected to the smoke exhaust pipe (6) via a connecting flange, and a connecting flange is also provided at the bottom end of the air outlet pipe (5) outside the box body (1).

9. A smoke exhaust pipe seawater backflow alarm method, characterized in that: The method comprises the smoke exhaust pipe seawater backflow alarm device as described in claim 8, and the method comprises the following steps: S1, the first liquid level sensor (7) detects the liquid level height in the box (1) in real time. When the first liquid level sensor (7) detects that the liquid in the box (1) is at a high level, the high level signal is fed back to the control system, and the control system controls the alarm (2) to turn on and issue an alarm prompt; S2, the control system controls the stop valve (11) to open, and controls the water pump (8) to start, so as to pump the water out of the box (1); S3, the second liquid level sensor (10) detects the liquid level height in the box (1) in real time. When the second liquid level sensor (10) detects that the liquid in the box (1) is at a low level signal, the low level signal is fed back to the control system, and the control system controls the alarm (2) to turn off, stop the alarm prompt, and simultaneously close the stop valve (11) and the water pump (8) to stop pumping water.

10. A smoke exhaust pipe seawater backflow alarm method according to claim 9, characterized in that: The method further comprises step S4: a worker goes to the location of the box body (1) along the exhaust path of the smoke exhaust pipe (6) to conduct an inspection.

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