Electromagnetic drive-based pressure balance type silent underwater sewage discharge system and method

Abstract

The application discloses a pressure balance type silent underwater sewage discharge system based on electromagnetic driving, which comprises a storage container, a sewage collecting pipeline, a sewage discharge pipeline and a pressure balance pipeline; an electromagnetic driving device is fixed to the inner bottom of the storage container, a sewage discharge piston is installed above the electromagnetic driving device, and the outer circumferential surface of the sewage discharge piston is in sealing connection with the inner wall surface of the storage container; the sewage discharge piston divides the storage container into an upper sewage collecting area and a lower balance area which are not communicated with each other; a sewage inlet and a sewage discharge outlet are formed in the top of the sewage collecting area, the sewage inlet is connected with the sewage collecting pipeline, and the sewage discharge outlet is connected with the sewage discharge pipeline; and the balance area is communicated with the pressure balance pipeline outside the ship. The application discloses a pressure balance type silent underwater sewage discharge system based on electromagnetic driving. The application has the beneficial effect that the electromagnetic driving device is used to drive the sewage discharge piston to move, so that the black water can overcome external resistance and be discharged into the sea environment, and the problem of transient noise caused by medium-pressure air leakage during the use of the sewage discharge system is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underwater sewage of submersible, in particular to a pressure balance type silent underwater sewage system and method based on electromagnetic drive. BACKGROUND

[0002] The storage container needs to be regularly discharged during the underwater navigation of manned submersible. With the continuous extension of the underwater navigation time of the submersible, the frequency of underwater use of the sewage system is greatly increased. At present, the submersible usually adopts air pressure sewage technology. Although this technology has been optimized and improved for many times, the basic air pressure blowout sewage mode has not been changed, that is, the compressed air carried by the submersible is used to blow out the storage container. The sewage principle has the following main problems: 1. The blowout pressure difference is difficult to accurately adjust during the blowout process, so there is a large transient noise during discharge; 2. Due to the influence of factors such as adhesion of internal wall dirt, it is difficult to realize accurate monitoring of the liquid level state in the storage container, and the sewage system is in a "blind" state during use; 3. After the sewage is finished, the high-pressure waste gas in the storage container will be backfilled into the cabin, which seriously affects the cabin environment. SUMMARY

[0003] The present application aims at the deficiencies of the prior art, and provides a pressure balance type silent underwater sewage method based on electromagnetic drive.

[0004] The technical scheme adopted by the present application is as follows: a pressure balance type silent underwater sewage system based on electromagnetic drive, comprising a storage container, a sewage collecting pipeline, a sewage pipeline and a pressure balance pipeline;

[0005] An electromagnetic drive device is fixed to the inner bottom of the storage container, a sewage piston is installed above the electromagnetic drive device, and the outer periphery of the sewage piston is in sealing connection with the inner wall of the storage container; the sewage piston divides the storage container into an upper sewage collecting area and a lower balance area which are not connected with each other;

[0006] A sewage inlet and a sewage outlet are formed in the top of the sewage collecting area, wherein the sewage outlet is lower than the sewage inlet; the sewage inlet is connected with the sewage collecting pipeline, and the sewage outlet is connected with the sewage pipeline;

[0007] The balance area is in communication with the pressure balance pipeline outside the hull;

[0008] The black water enters the sewage collecting area through the sewage collecting pipeline, the electromagnetic drive device generates a magnetic field after being powered on, drives the sewage piston to move upward, extrudes the black water in the sewage collecting area from the sewage outlet, and discharges the black water through the sewage pipeline.

[0009] According to the above scheme, the sewage system is also provided with an air pipeline, and the air pipeline is in communication with an air inlet provided in the top of the sewage collecting area.

[0010] According to the scheme, the balance area is provided with a partition plate, the partition plate separates the balance area into a water storage cavity and a device cavity, the water storage cavity is communicated with the balance pipeline, and the electromagnetic driving device is installed in the device cavity.

[0011] According to the scheme, the device cavity is further provided with a magnetic field displacement measuring device.

[0012] According to the scheme, the bottom of the sewage piston is provided with a weighing sensor.

[0013] According to the scheme, the water storage area is provided with an elastic support pad for limiting the downward movement of the sewage piston, and the elastic support pad is fixed to the inner wall of the storage container.

[0014] According to the scheme, the pressure balance pipeline is further communicated with a drainage pipeline.

[0015] According to the scheme, each pipeline is respectively provided with a valve for controlling the opening and closing of the pipeline.

[0016] According to the scheme, the air pipeline is provided with a waste gas filtering device.

[0017] The application also provides a pressure balance type silent underwater sewage method based on the sewage system.

[0018] When the system is in the sewage collection stage, the air pipeline and the sewage collection pipeline are opened, the other pipelines are closed, and the sewage piston is placed above the elastic support pad at the bottom; the black water collected by the sanitary unit flows into the sewage collection area above the sewage piston through the sewage collection pipeline, and the waste gas in the storage container is filtered and discharged into the cabin through the air pipeline;

[0019] When the system is in the pressure balance stage, the air pipeline and the pressure balance pipeline are opened, the other pipelines are closed, and the sea water outside the cabin is injected through the pressure balance pipeline; the sewage piston moves upward to remove the waste gas in the storage container; after the gas is exhausted, the air pipeline is closed to establish the internal and external pressure balance state.

[0020] When the system is in the sewage stage, the sewage pipeline and the pressure balance pipeline are opened, and the other pipelines are closed; the sewage piston is driven and moved upward by the coulomb force generated by the energization of the electromagnetic driving device, the black water in the sewage collection area of the storage container is discharged outside the cabin through the sewage pipeline, and the sea water outside the cabin is sucked into the lower part of the sewage piston through the pressure balance pipeline.

[0021] When the system is in the drainage stage, the air pipeline and the drainage pipeline are opened, and the other pipelines are closed; the sewage piston is reset, the sea water in the water storage area of the storage container is discharged outside the cabin through the pressure balance pipeline, and the air is sucked into the sewage collection area of the storage container through the air pipeline.

[0022] The application has the following beneficial effects:

[0023] 1) No noise: the application creatively couples electromagnetic drive device with blowdown piston, uses electromagnetic drive device to drive blowdown piston to move, makes black water overcome external resistance and discharge into marine environment, instead of traditional medium pressure gas blowing blowdown mode, and fundamentally solves the problem of transient noise caused by medium pressure air leakage during use of blowdown system.

[0024] 2) Low energy consumption: the application uses internal and external pressure balance mechanism to eliminate external seawater pressure difference resistance during blowdown, and reduces the operation energy consumption of blowdown piston.

[0025] 3) Wide range: since pressure balance technology is used during blowdown, the back pressure factor of outboard seawater does not need to be considered, the pressure balance blowdown mode is suitable for a wide working depth, and can be widely applied to various underwater vehicles. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of one specific embodiment of the application.

[0027] Figure 2 It is a schematic diagram of the embodiment in the collection stage.

[0028] Figure 3 It is a schematic diagram of the embodiment in the pressure equalization stage.

[0029] Figure 4 It is a schematic diagram of the embodiment in the blowdown stage.

[0030] Figure 5 It is a schematic diagram of the embodiment in the drainage stage.

[0031] 1, storage container; 2, collection pipeline; 3, blowdown pipeline; 4, pressure balance pipeline; 5, blowdown piston; 6, electromagnetic drive device; 7, air pipeline; 8, drainage pipeline; 9, magnetic field displacement measuring device; 10, elastic support pad; 11, electro-hydraulic ball valve; 12, blowdown side valve. DETAILED DESCRIPTION

[0032] In order to better understand the application, the application will be further described below in combination with the drawings and specific embodiments.

[0033] As shown in a pressure balance type noiseless underwater blowdown system based on electromagnetic drive, comprising a storage container 1, a collection pipeline 2, a blowdown pipeline 3 and a pressure balance pipeline 4; Figure 1 The inner bottom of the storage container 1 is fixed with an electromagnetic drive device 6, the blowdown piston 5 is installed above the electromagnetic drive device 6, and the outer peripheral surface of the blowdown piston 5 is in sealing connection with the inner wall surface of the storage container 1; the blowdown piston 5 divides the storage container 1 into an upper collection area and a lower balance area which are not connected to each other;

[0034] ​

[0035] The top of the sewage collection area is provided with a sewage inlet and a sewage outlet, wherein the sewage outlet is lower than the sewage inlet; the sewage inlet is connected to the sewage collection pipe 2, and the sewage outlet is connected to the sewage discharge pipe 3.

[0036] The balance zone is connected to the pressure balance pipeline 4 outside the ship;

[0037] Black water enters the collection area through the collection pipe 2. When the electromagnetic drive device 6 is energized, it generates a magnetic field, which drives the discharge piston 5 to move upward, squeezing the black water in the collection area out of the discharge port and discharging it through the discharge pipe 3.

[0038] Preferably, the sewage system further includes a venting pipe 7, which is connected to a vent located at the top of the sewage collection area. The venting pipe 7 is equipped with an exhaust gas filtration device.

[0039] Preferably, the balance zone is provided with a partition, which divides the balance zone into a water storage chamber and an equipment chamber; the water storage chamber is connected to the balance pipeline; and the electromagnetic drive device 6 is installed in the equipment chamber.

[0040] Preferably, a magnetic field displacement measuring device 9 is also installed inside the equipment cavity. The magnetic field displacement measuring device 9 is based on the magnetic grating displacement measuring principle and is used to measure the displacement of the sewage discharge piston 5 during the sewage discharge stage.

[0041] Preferably, a weighing sensor is installed at the bottom of the sewage piston 5.

[0042] Preferably, the water storage area is provided with an elastic support pad 10 for restricting the downward movement of the sewage piston 5, and the elastic support pad 10 is fixed to the inner wall of the storage container 1.

[0043] Preferably, the pressure balancing pipeline 4 is also connected to a drainage pipeline 8.

[0044] In this invention, each pipeline is equipped with a valve for controlling the on / off state of the pipeline, specifically an electro-hydraulic ball valve 11; the sewage discharge pipeline 3 is also equipped with a sewage discharge side valve 12. The exhaust gas filtration device, weighing sensor, magnetic field displacement measuring device 9, and electromagnetic drive device 6 are all existing mature structures, and will not be described in detail here.

[0045] In this invention, the components and their functions are as follows:

[0046] Storage container 1 is used to store blackwater. Collection pipe 2 is used to collect blackwater generated by sanitary units (such as squat / sitting toilets). Ventilation pipe 7 is used to maintain pressure balance inside storage container 1 during collection. Pressure balancing pipe 4 outside the hull is used to balance the pressure inside and outside the hull during discharge, eliminating seawater back pressure. Discharge pipe 3 on the hull side is used to discharge blackwater from storage container 1. Electromagnetic drive device 6 generates a strong magnetic field when energized, driving discharge piston 5 to move upwards; discharge piston 5 is used to squeeze out blackwater from the collection area of ​​storage container 1. Five electro-hydraulic ball valves are used to control the opening and closing of venting pipe 7, collection pipe 2, drainage pipe 8, pressure balancing pipe 4, and discharge pipe 3, respectively. Elastic support pad 10 is used to limit the lowest point of downward displacement of discharge piston 5. A load cell uses force-deformation feedback to measure the weight of blackwater inside storage container 1 and estimate the static liquid level during the collection stage. Magnetic field displacement measuring device 9 uses the magnetic grating displacement measurement principle to measure the movement speed of discharge piston 5 during the discharge stage and can calculate the movement speed from this.

[0047] A pressure-balanced silent underwater sewage discharge method based on the sewage system described above is proposed. This method is divided into a sewage collection stage, a pressure equalization stage, a sewage discharge stage, and a drainage stage according to the system operating conditions.

[0048] like Figure 2 As shown, when the system is in the sludge collection stage, the valves on the vent pipe 7 and the sludge collection pipe 2 are in the open state, the valves on other pipes are in the closed state, and the sludge discharge piston 5 is placed above the elastic support pad 10 at the bottom; the black water collected by the sanitary unit flows into the sludge collection area above the sludge discharge piston 5 through the sludge collection pipe 2, and the exhaust gas inside the storage container 1 is filtered and discharged into the cabin through the vent pipe 7.

[0049] like Figure 3 As shown, when the system is in the pressure equalization stage, the valves on the venting pipe 7 and the pressure balancing pipe 4 are in the open state, while the valves on other pipes are in the closed state. Seawater from outside the ship is injected through the pressure balancing pipe 4. During the pressure equalization process, the sewage discharge piston 5 will move slightly upward to remove excess exhaust gas from the storage container 1. After the gas is exhausted, the valves on the venting pipe 7 are closed, and finally, a steady state of internal and external pressure balance is established.

[0050] like Figure 4 As shown, when the system is in the sewage discharge stage, the valves on the sewage discharge pipe 3 and the pressure balance pipe 4 are in the open state, while the valves on other pipes are in the closed state; the sewage discharge piston 5 is pushed upward by the Coulomb force generated after the electromagnetic drive device 6 is energized, and the black water in the sewage collection area inside the storage container 1 is discharged to the outside through the sewage discharge pipe 3. At this time, the seawater outside the ship is drawn into the water storage area below the sewage discharge piston 5 through the pressure balance pipe 4.

[0051] like Figure 5As shown, when the system is in the drainage stage, the valves on the venting pipe 7 and the drainage pipe 8 are in the open state, while the valves on other pipes are in the closed state; the sewage piston 5 is reset by its own gravity or Coulomb force (the electromagnetic drive device 6 is supplied with reverse current). At this time, the seawater in the water storage area of ​​the storage container 1 is discharged to the outside through the pressure balance pipe 4, and the air is drawn into the sewage collection area of ​​the storage container 1 through the venting pipe 7.

[0052] This invention innovatively employs a mechanical sewage discharge method using a sewage discharge piston 5 to remove black water from the storage container 1, and uses an internal and external pressure balance mechanism to counteract the back pressure of seawater outside the ship, reducing sewage discharge energy consumption; it adopts an electromagnetic drive device, utilizing the electromagnetic braking principle to control the movement of the sewage discharge piston 5, reducing the operating noise of the drive device during sewage discharge; in response to the intelligent monitoring needs of the sewage discharge system, it integrates a non-contact stress-strain feedback weighing and measuring device and a magnetic field displacement measuring device 9 to monitor the status of black water collection and discharge process of the sewage discharge system, realizing "transparent" management of the entire sewage discharge process.

[0053] The above description is merely a preferred embodiment of this intellectual property, but this intellectual property should not be limited to the content disclosed in this embodiment and the accompanying drawings. All equivalent or modified embodiments that do not depart from the spirit of this intellectual property shall fall within the scope of protection of this intellectual property.

Claims

1. A pressure balanced silent underwater sewage system based on electromagnetic drive, characterized in that, The system comprises a storage container, a sewage collecting pipeline, a sewage discharging pipeline and a pressure balance pipeline; An electromagnetic drive device is fixed to the inner bottom of the storage container, and a sewage discharging piston is installed above the electromagnetic drive device, with the outer periphery of the sewage discharging piston being in sealing connection with the inner wall of the storage container; the sewage discharging piston divides the storage container into an upper sewage collecting area and a lower balance area which are not in communication with each other; A sewage inlet and a sewage outlet are formed in the top of the sewage collecting area, with the sewage outlet being lower than the sewage inlet; the sewage inlet is connected with the sewage collecting pipeline, and the sewage outlet is connected with the sewage discharging pipeline; The balance area is in communication with the pressure balance pipeline outside the hull; and an electro-hydraulic ball valve is arranged on the pressure balance pipeline; The black water enters the sewage collecting area through the sewage collecting pipeline, and the electromagnetic drive device generates a magnetic field after being powered on to drive the sewage discharging piston to move upward, so as to squeeze the black water in the sewage collecting area out of the sewage outlet and discharge the black water outside the hull through the sewage discharging pipeline; A partition is arranged in the balance area to divide the balance area into a water storage cavity and a device cavity; the water storage cavity is in communication with the pressure balance pipeline; the electromagnetic drive device is installed in the device cavity; and a magnetic field displacement measuring device is also installed in the device cavity.

2. The pressure balanced silent underwater drain system of claim 1, wherein, The sewage discharging system is also provided with an air vent pipeline which is in communication with an air vent arranged on the top of the sewage collecting area.

3. The pressure balanced silent underwater drain system of claim 1, wherein, A weighing sensor is installed on the bottom of the sewage discharging piston.

4. The pressure balanced silent underwater drain system of claim 3, wherein, An elastic supporting pad for limiting downward movement of the sewage discharging piston is arranged in the water storage cavity, and the elastic supporting pad is fixed to the inner wall of the storage container.

5. The pressure balanced silent underwater drain system of claim 1, wherein, A drain pipeline is also connected with the pressure balance pipeline.

6. The pressure balanced silent underwater drain system of claim 2, wherein, Valves for controlling the opening and closing of the pipelines are arranged on the pipelines respectively.

7. The pressure balanced silent underwater drain system of claim 2, wherein, A waste gas filtering device is arranged on the air vent pipeline.

8. A pressure balanced silent underwater sewage discharge method based on the sewage system according to any one of claims 2 to 7, characterized in that, The method comprises a sewage collecting stage, a pressure balancing stage, a sewage discharging stage and a water draining stage; When the system is in the sewage collecting stage, the air vent pipeline and the sewage collecting pipeline are opened, and the other pipelines are closed; the sewage discharging piston is arranged above the elastic supporting pad at the bottom; the black water collected by the sanitary unit flows into the sewage collecting area above the sewage discharging piston through the sewage collecting pipeline, and the waste gas in the storage container is filtered and discharged into the cabin through the air vent pipeline; When the system is in the pressure balancing stage, the air vent pipeline and the pressure balance pipeline are opened, and the other pipelines are closed; the seawater outside the hull is injected through the pressure balance pipeline; the sewage discharging piston moves upward to remove the waste gas in the storage container; after the gas is exhausted, the air vent pipeline is closed to establish an internal and external pressure balance state; When the system is in the sewage discharging stage, the sewage discharging pipeline and the pressure balance pipeline are opened, and the other pipelines are closed; the sewage discharging piston is driven by the coulomb force generated by the electromagnetic drive device and moves upward, so that the black water in the sewage collecting area of the storage container is discharged outside the hull through the sewage discharging pipeline, and the seawater outside the hull is sucked into the area below the sewage discharging piston through the pressure balance pipeline; When the system is in the water draining stage, the air vent pipeline and the drain pipeline are opened, and the other pipelines are closed; the sewage discharging piston is reset, and the seawater in the water storage cavity of the storage container is discharged outside the hull through the pressure balance pipeline, and the air is sucked into the sewage collecting area of the storage container through the air vent pipeline.

Images