Cabin immersion sensor

Abstract

The utility model provides a cabin water immersion sensor, including: shell, upper and lower cover plate, floater Hall element and circuit board, floater includes floater body and floater seal cover, through optimizing circuit board circuit, floater material, floater structure design and shell material, realize canceling positive and negative pole, add voltage stabilizing element, improve the reliability of cabin water immersion sensor, improve the reliability of cabin water immersion sensor, improve the reliability of cabin water immersion sensor, and improve the reliability of cabin water immersion sensor. The circuit board is prevented from being damaged by an external power supply, the product damage rate is reduced, it is guaranteed that the floater can still float normally after long-term work of the product, the equipment failure rate is reduced, meanwhile, the product has better flame retardance, and the safety and reliability of the product are improved.

Description

Technical Field

[0001] The utility model relates to the field of sensors, in particular to a cabin flooding sensor. Background Art

[0002] The existing cabin flooding sensors have a high failure rate after long-term use on board. The first problem is that the circuit board is easily damaged; the second problem is that the float cannot float up in time. If the cabin flooding alarm signal cannot be sent out in time when flooding occurs, it will seriously affect the safety of the ship and the crew. Utility Model Content

[0003] The utility model aims to provide a cabin flooding sensor.

[0004] In order to solve the above problems, the utility model provides a cabin flooding sensor, comprising:

[0005] Including: shell, lower cover and upper cover,

[0006] The shell is provided with: a separated buoy chamber and an electrical component chamber, wherein the electrical component chamber is provided at the upper part of the buoy chamber and is separated from the buoy chamber, wherein a lower cover is fixed to the bottom of the buoy chamber, and a water inlet hole is provided on the lower cover; a float is provided in the buoy chamber, and the float comprises: a buoy body and a buoy cover, wherein the buoy cover is provided on the buoy body, and a magnet is provided in the buoy cover; the lower cover is fixed to the bottom of the buoy chamber by self-tapping screws;

[0007] A plurality of protruding columns are symmetrically arranged at intervals on the top and bottom of the outer side wall of the float body, and the protruding columns are in contact with the inner side wall of the float chamber;

[0008] The electrical component chamber includes: a Hall element matched with the magnet, a circuit board connected to the Hall element, and the circuit board is connected to a control cable;

[0009] The upper cover plate is closed at the top of the electrical component chamber. A through hole is arranged on the upper cover plate. An electromagnetic compatible cable connector is arranged in the through hole. The control cable passes through the electromagnetic compatible cable connector to the outside of the electrical component chamber.

[0010] Furthermore, in the above-mentioned cabin flooding sensor, an outer side wall of the float cover is provided with an external thread, and an internal thread matching with the external thread is provided on the float body.

[0011] Furthermore, in the above-mentioned cabin flooding sensor, the electrical component chamber on the upper part of the circuit board is filled with silicone rubber;

[0012] The upper cover plate closes the top of the electrical component chamber by screws, and a flat washer is provided between the screws and the upper cover plate;

[0013] A fluororubber O-type sealing ring is provided between the upper cover plate and the top of the electrical component chamber;

[0014] The electromagnetic compatibility cable connector is fixed in the through hole by the nylon glue.

[0015] Furthermore, in the above-mentioned cabin flooding sensor, a total of 8 protruding columns are symmetrically arranged at intervals on the top and bottom of the outer side wall of the float body.

[0016] Furthermore, in the above-mentioned cabin flooding sensor, each raised column on the top of the outer wall of the float body is higher than the upper surface of the float body; each raised column on the bottom of the outer wall of the float body is lower than the lower surface of the float body.

[0017] Furthermore, in the above-mentioned cabin flooding sensor, each raised column on the top of the outer wall of the float body is 1 mm higher than the upper surface of the float body; each raised column on the bottom of the outer wall of the float body is 1 mm lower than the lower surface of the float body.

[0018] Furthermore, in the above-mentioned cabin flooding sensor, the height of the float body is 48 mm and the diameter is 43.5 mm; the height of the protruding column is 5 mm and the diameter of the protruding column is 2.5 mm.

[0019] Furthermore, in the above-mentioned cabin flooding sensor, both the buoy body and the buoy cover are made of polytetrafluoroethylene material.

[0020] Furthermore, in the above-mentioned cabin flooding sensor, the shell, the lower cover plate and the upper cover plate are respectively made of flame-retardant nylon 66 material.

[0021] Furthermore, in the above-mentioned cabin flooding sensor, the circuit board includes:

[0022] J1 terminal, the input ends of the first end, the second end and the third end of the J1 terminal are respectively connected to the Hall element; the output end of the third end of the J1 terminal is grounded;

[0023] Resistor R5 and resistor R4, the output end of the first end of the J1 terminal is connected to the input end of the resistor R5; the output end of the second end of the J1 terminal is connected to the input end of the resistor R4; the output end of the resistor R4 is connected to the input end of the resistor R5;

[0024] A voltage regulator Q1 and a resistor R2, wherein the second end of the voltage regulator Q1 is connected to the output end of the resistor R5, the first end of the voltage regulator Q1 is connected to the output end of the resistor R2; the input end of the resistor R2 is connected to the output end of the resistor R5;

[0025] A patch bridge component QF1 and a resistor R1, wherein the input end of the resistor R1 is connected to the third end of the voltage regulator Q1, the output end of the resistor R1 is connected to the second end of the patch bridge component QF1, and the fourth end of the patch bridge component QF1 is grounded;

[0026] The first end of the patch bridge element QF1 is connected to the input end of the first end of the J2 terminal, and the third end of the patch bridge element QF1 is connected to the input end of the second end of the J2 terminal; the control cable (13) is respectively connected to the output ends of the first end and the second end of the J2 terminal.

[0027] Compared with the prior art, the utility model includes: a shell, upper and lower covers, a float (including a buoy body and a buoy cover), a Hall element, a circuit board, etc. When in use, the cabin flooding sensor can be fixed on the bulkhead of the ship, and water enters the buoy chamber from the water inlet hole of the lower cover 2. When the buoy chamber is flooded to a certain height, the water floats the float. A magnet is installed on the top of the inner top of the buoy cover 5. When the float rises to a certain height, the magnet triggers the Hall element and the circuit board 7. The circuit board 7 sends out a cabin flooding alarm signal through a ship control cable 13. The utility model has a plurality of raised columns 21 symmetrically arranged at intervals on the top and bottom of the outer wall of the buoy body 4. The raised columns 21 contact the inner side wall of the buoy chamber, which can reduce the contact surface between the raised columns 21 and the inner side wall of the buoy chamber, and facilitate the raised columns to slide up and down along the inner side wall of the buoy chamber. It can ensure that when there is a risk of flooding, the cabin flooding alarm signal can be sent out in time to ensure the safety of the ship and the crew.

[0028] The utility model eliminates positive and negative poles and adds voltage stabilizing elements by optimizing the circuit board circuit, float material, float structure design and shell material, thereby avoiding damage to the circuit board by an external power supply, reducing the product damage rate, ensuring that the float can float normally after the product has been working for a long time, reducing the equipment failure rate, and at the same time making the product have better flame retardancy, thereby improving the safety and reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of a cabin flooding sensor according to an embodiment of the utility model;

[0030] Figure 2 It is a schematic diagram of a circuit board of an embodiment of the utility model;

[0031] Figure 3 It is a schematic diagram of the assembly of a buoy body and a buoy cover according to an embodiment of the utility model;

[0032] Figure 4 It is a schematic diagram of the disassembly of a buoy body and a buoy cover according to an embodiment of the utility model. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] like Figures 1 to 4 As shown, the utility model provides a cabin flooding sensor, comprising: a housing 3, a lower cover plate 2 and an upper cover plate 14,

[0035] The shell 3 is provided with: a separated buoy chamber and an electrical component chamber, wherein the electrical component chamber is provided at the upper part of the buoy chamber and is separated from the buoy chamber, wherein a lower cover plate 2 is fixed to the bottom of the buoy chamber, and a water inlet hole is provided on the lower cover plate 2; preferably, the lower cover plate 2 can be fixed to the bottom of the buoy chamber by a cross-slot pan head self-tapping screw 1; a float is provided in the buoy chamber, and the float includes: a buoy body 4 and a buoy cover 5, wherein the buoy cover 5 is provided on the buoy body 4, and a magnet 1 is provided in the buoy cover 5 8; a foaming foam column 10 is arranged in the chamber of the float; a plurality of raised columns 21 are symmetrically arranged at intervals on the top and bottom of the outer wall of the float body 4, the raised columns 21 are in contact with the inner wall of the float chamber, and the raised columns can slide up and down along the inner wall of the float chamber; preferably, an outer wall of the float cover 5 is provided with an external thread 19, and the float body 4 is provided with an internal thread 20 that cooperates with the external thread, and through the cooperation of the internal thread 20 and the external thread 19, the float cover 5 can seal the magnet 18 in the chamber of the float body 4;

[0036] Here, by separating the float chamber and the electrical component chamber, water in the float chamber can be prevented from entering the electrical component chamber, thereby avoiding damage to the electrical components in the electrical component chamber;

[0037] The electrical component chamber includes: a Hall element 6 matched with the magnet, and a circuit board 7 connected to the Hall element 6. Preferably, the circuit board 7 is fixed in the electrical component chamber by a cross-slot pan head self-tapping screw 17; the circuit board 7 is connected to a ship control cable 13 for signal transmission; preferably, the electrical component chamber on the upper part of the circuit board 7 is filled with silicone rubber 16, which plays a role in physical waterproofing, preventing the upper part of the housing from being soaked in water and damaging the circuit board;

[0038] The upper cover plate 14 is closed on the top of the electrical component chamber. Preferably, the upper cover plate 14 closes the top of the electrical component chamber by a hexagonal head non-slip screw 8, a flat washer 9 is arranged between the hexagonal head non-slip screw 8 and the upper cover plate 14, and a fluororubber O-ring 15 is arranged between the upper cover plate 14 and the top of the electrical component chamber; a through hole is arranged on the upper cover plate 14, an electromagnetic compatibility cable connector 12 is arranged in the through hole, and the control cable 13 passes through the electromagnetic compatibility cable connector 12 to the outside of the electrical component chamber; preferably, the electromagnetic compatibility cable connector 12 is fixed in the through hole by the nylon glue 11.

[0039] Here, the utility model includes: a shell, upper and lower covers, a float (including a buoy body and a buoy cover), a Hall element, a circuit board, etc. When in use, the cabin flooding sensor can be fixed on the bulkhead of the ship, and water enters the buoy chamber from the water inlet hole of the lower cover 2. When the buoy chamber is flooded to a certain height, the water floats the float. A magnet is installed on the top of the inner top of the buoy cover 5. When the float rises to a certain height, the magnet triggers the Hall element and the circuit board 7. The circuit board 7 sends out a cabin flooding alarm signal through a ship control cable 13. The utility model has a plurality of raised columns 21 symmetrically arranged at intervals on the top and bottom of the outer wall of the buoy body 4. The raised columns 21 contact the inner side wall of the buoy chamber, which can reduce the contact surface between the raised columns 21 and the inner side wall of the buoy chamber, so that the raised columns can slide flexibly up and down along the inner side wall of the buoy chamber. It can ensure that when there is a risk of flooding, the cabin flooding alarm signal can be sent out in time to ensure the safety of the ship and the crew.

[0040] Better, such as Figure 3 As shown, a total of 8 protruding columns 21 are symmetrically arranged at the top and bottom of the outer wall of the float body 4. Four protruding columns 21 are arranged at the top and bottom of the outer wall of the float body 4, respectively. When the float contacts the inner wall of the float chamber, the contact area with the cylinder wall is effectively reduced, avoiding the phenomenon of alarm delay due to friction resistance, and reducing the product failure rate.

[0041] More preferably, each protruding column 21 on the top of the outer wall of the buoy body 4 is higher (protruding) than the upper surface of the buoy body 4, such as slightly higher (protruding) by 1 mm. Each protruding column 21 on the bottom of the outer wall of the buoy body 4 is lower (protruding) than the lower surface of the buoy body 4, such as slightly lower (protruding) by 1 mm.

[0042] Optionally, the float body has a height of 48 mm and a diameter of 43.5 mm. After taking into account the raised columns at the top and bottom, the height of the float body is 50 mm and the diameter of the float body is approximately 48.5 mm.

[0043] Preferably, after the buoy body 4 and the buoy cover 5 are assembled through the internal and external threads, the upper surface of the buoy cover 5 is flush with the upper surface of the buoy body 4 to ensure that the various raised columns 21 on the top of the outer wall of the buoy body 4 are higher than (protruding from) the upper surface of the buoy body 4 and the buoy cover 5; at the same time, it is ensured that the various raised columns 21 on the bottom of the outer wall of the buoy body 4 are lower than (protruding from) the lower surface of the buoy body 4 and the buoy cover 5.

[0044] Here, the four raised columns around the top of the outer wall of the float body 4 are higher than the upper surface of the float body 4, and the lower surface of the four raised columns around the bottom of the outer wall of the float body 4 can effectively reduce the contact area with the upper and lower surfaces of the inner wall of the float chamber when the float touches the bottom or the top, avoid the influence of tension or adhesion of water and other impurities, avoid the float sticking to the upper and lower surfaces, make the float float smoothly, and cause no alarm or false alarm, effectively reducing the failure rate of the product.

[0045] Preferably, the buoy body 4 has a height of 48 mm and a diameter of 43.5 mm; the height of the protruding column 21 is 5 mm, and the diameter of the protruding column 21 is 2.5 mm.

[0046] More preferably, the float body 4 and the float cover 5 are both made of polytetrafluoroethylene material, so that the float has better high lubricity and non-stickiness.

[0047] Preferably, the shell 3, the lower cover plate 2 and the upper cover plate 14 are respectively made of flame-retardant nylon 66 material, so that the shell material has better flame retardancy and enhances product safety and reliability.

[0048] Preferably, as shown in Figure 2, the circuit board 7 includes:

[0049] J1 terminal, the input ends of the first end, the second end and the third end of the J1 terminal are respectively connected to the Hall element 6; the output end of the third end of the J1 terminal is grounded;

[0050] Resistor R5 and resistor R4, the output end of the first end of the J1 terminal is connected to the input end of the resistor R5; the output end of the second end of the J1 terminal is connected to the input end of the resistor R4; the output end of the resistor R4 is connected to the input end of the resistor R5;

[0051] A voltage regulator Q1 and a resistor R2, wherein the second end of the voltage regulator Q1 is connected to the output end of the resistor R5, the first end of the voltage regulator Q1 is connected to the output end of the resistor R2; the input end of the resistor R2 is connected to the output end of the resistor R5;

[0052] A patch bridge component QF1 and a resistor R1, wherein the input end of the resistor R1 is connected to the third end of the voltage regulator Q1, the output end of the resistor R1 is connected to the second end of the patch bridge component QF1, and the fourth end of the patch bridge component QF1 is grounded;

[0053] J2 terminal, the first end of the patch bridge stack element QF1 is connected to the input end of the first end of the J2 terminal, and the third end of the patch bridge stack element QF1 is connected to the input end of the second end of the J2 terminal; the control cable 13 is respectively connected to the output ends of the first and second ends of the J2 terminal.

[0054] Here, the control cable 13 may be a shipboard control cable. The internal Hall element is connected to the circuit board J1 terminal by welding, the control cable is connected to the circuit board J2 terminal, and the control cable is led out to the outside of the sensor for connecting to an external power supply.

[0055] In the circuit board of the utility model, by selecting circuit components, a patch bridge stack component QF1 is added in the circuit to cancel the positive and negative polarity of the circuit board to avoid damage to the circuit board due to wiring errors; and a voltage regulator Q1 is added to the circuit board to avoid damage to the circuit board due to external voltage fluctuations, thereby reducing the product damage rate. At the same time, four resistors R1, R2, R4 and R5 are designed in the circuit board to play a role in voltage division, reduce the voltage across the bridge stack QF1 and the voltage regulator Q1, effectively protect the circuit components, and extend the service life of the circuit board.

[0056] To sum up, the utility model eliminates the positive and negative poles and adds voltage stabilizing elements by optimizing the circuit board circuit, float material, float structure design and shell material, thereby avoiding damage to the circuit board by an external power supply, reducing the product damage rate, ensuring that the float can float normally after the product has been working for a long time, reducing the equipment failure rate, and at the same time making the product have better flame retardancy, thereby improving the safety and reliability of the product.

[0057] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0058] Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A cabin flooding sensor, characterized in that: include: A housing (3), a lower cover plate (2) and an upper cover plate (14), The shell (3) is provided with: a separated float chamber and an electrical component chamber, wherein the electrical component chamber is provided at the upper part of the float chamber and is separated from the float chamber, wherein a lower cover plate (2) is fixed to the bottom of the float chamber, and a water inlet hole is provided on the lower cover plate (2); a float is provided in the float chamber, and the float comprises: a float body (4) and a float cover (5), wherein the float body (4) is provided with the float cover (5), and a magnet (18) is provided in the float cover (5); the lower cover plate (2) is fixed to the bottom of the float chamber by self-tapping screws (1); A plurality of protruding columns (21) are symmetrically arranged at intervals on the top and bottom of the outer side wall of the float body (4), and the protruding columns (21) are in contact with the inner side wall of the float chamber; The electrical component chamber comprises: a Hall element (6) matched with the magnet, a circuit board (7) connected to the Hall element (6), and the circuit board (7) is connected to a control cable (13); The upper cover plate (14) is sealed at the top of the electrical component chamber, a through hole is provided on the upper cover plate (14), an electromagnetic compatibility cable connector (12) is provided in the through hole, and the control cable (13) passes through the electromagnetic compatibility cable connector (12) to the outside of the electrical component chamber.

2. The cabin flooding sensor according to claim 1, characterized in that: An external thread (19) is provided on the outer side wall of the buoy cover (5), and an internal thread (20) matching with the external thread is provided on the buoy body (4).

3. The cabin flooding sensor according to claim 1, characterized in that: The electrical component chamber on the upper part of the circuit board (7) is filled with silicone rubber (16); The upper cover plate (14) seals the top of the electrical component chamber by means of screws (8), and a flat washer (9) is provided between the screws (8) and the upper cover plate (14); A fluororubber O-type sealing ring (15) is provided between the upper cover plate (14) and the top of the electrical component chamber; The electromagnetic compatibility cable connector (12) is fixed in the through hole by means of nylon glue (11).

4. The cabin flooding sensor according to claim 1, characterized in that: A total of eight protruding columns (21) are symmetrically arranged at intervals on the top and bottom of the outer side wall of the buoy body (4).

5. The cabin flooding sensor according to claim 1, characterized in that: Each protruding column (21) at the top of the outer wall of the buoy body (4) is higher than the upper surface of the buoy body (4); each protruding column (21) at the bottom of the outer wall of the buoy body (4) is lower than the lower surface of the buoy body (4).

6. The cabin flooding sensor according to claim 5, characterized in that: Each protruding column (21) at the top of the outer wall of the buoy body (4) is 1 mm higher than the upper surface of the buoy body (4); each protruding column (21) at the bottom of the outer wall of the buoy body (4) is 1 mm lower than the lower surface of the buoy body (4).

7. The cabin flooding sensor according to claim 1, characterized in that: The buoy body (4) has a height of 48 mm and a diameter of 43.5 mm; the height of the protruding column (21) is 5 mm and the diameter of the protruding column (21) is 2.5 mm.

8. The cabin flooding sensor according to claim 1, characterized in that: The buoy body (4) and the buoy cover (5) are both made of polytetrafluoroethylene material.

9. The cabin flooding sensor according to claim 1, characterized in that: The shell (3), the lower cover plate (2) and the upper cover plate (14) are respectively made of flame-retardant nylon 66 material.

10. The cabin flooding sensor according to claim 1, characterized in that: The circuit board (7) comprises: J1 terminal, the input ends of the first end, the second end and the third end of the J1 terminal are respectively connected to the Hall element (6); the output end of the third end of the J1 terminal is grounded; Resistor R5 and resistor R4, the output end of the first end of the J1 terminal is connected to the input end of the resistor R5; the output end of the second end of the J1 terminal is connected to the input end of the resistor R4; the output end of the resistor R4 is connected to the input end of the resistor R5; A voltage regulator Q1 and a resistor R2, wherein the second end of the voltage regulator Q1 is connected to the output end of the resistor R5, the first end of the voltage regulator Q1 is connected to the output end of the resistor R2; the input end of the resistor R2 is connected to the output end of the resistor R5; A patch bridge component QF1 and a resistor R1, wherein the input end of the resistor R1 is connected to the third end of the voltage regulator Q1, the output end of the resistor R1 is connected to the second end of the patch bridge component QF1, and the fourth end of the patch bridge component QF1 is grounded; The first end of the patch bridge element QF1 is connected to the input end of the first end of the J2 terminal, and the third end of the patch bridge element QF1 is connected to the input end of the second end of the J2 terminal; the control cable (13) is respectively connected to the output ends of the first end and the second end of the J2 terminal.

Images