CN110884634A - System and method for controlling buoyancy adjustment for variable volume by seawater pump - Google Patents
System and method for controlling buoyancy adjustment for variable volume by seawater pump Download PDFInfo
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- CN110884634A CN110884634A CN201911340931.5A CN201911340931A CN110884634A CN 110884634 A CN110884634 A CN 110884634A CN 201911340931 A CN201911340931 A CN 201911340931A CN 110884634 A CN110884634 A CN 110884634A
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- 239000013535 sea water Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims description 45
- 230000001105 regulatory effect Effects 0.000 claims abstract description 18
- 230000001276 controlling effect Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000007667 floating Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000013575 regulation of buoyancy Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/14—Control of attitude or depth
- B63G8/22—Adjustment of buoyancy by water ballasting; Emptying equipment for ballast tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/14—Control of attitude or depth
- B63G8/26—Trimming equipment
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Abstract
The invention discloses a buoyancy regulating system for controlling variable volume of a seawater pump, which is characterized in that: the device comprises a pump end filter, a seawater pump, a motor, a one-way valve, an overflow valve, a reducing hydraulic cylinder, a normally closed electromagnetic switch valve and a cylinder end filter; the reducing hydraulic cylinder comprises a large-diameter cavity A, a cavity B, a small-diameter cavity C and a piston connected with the large-diameter cavity A and the small-diameter cavity C at the cavity B; the large-diameter cavity A is connected with a cylinder end filter, and the cylinder end filter is communicated with the marine environment; the small-diameter cavity C is respectively connected with a check valve, an overflow valve and a normally closed electromagnetic switch valve, an inlet of the seawater pump is connected with a pump end filter, an outlet of the seawater pump is connected with the check valve, and the outlet of the pump end filter and the overflow valve and the normally closed electromagnetic switch valve are communicated with the marine environment. The invention changes the displacement volume by controlling the movement of the piston of the reducing hydraulic cylinder, thereby realizing the buoyancy adjustment and having the unique advantages of simple system structure and low energy consumption.
Description
Technical Field
The invention belongs to the field of submersibles, and particularly relates to a system and a method for controlling variable volume buoyancy adjustment by a seawater pump.
Background
When the submersible is used for exploration, scientific investigation and other operations in the sea, buoyancy and gravity unbalance is caused by factors such as sampling and seawater density change. To ensure the steady state required for the normal operation of the submersible, the buoyancy regulating system compensates for the buoyancy of the submersible by changing the average density of the submersible itself.
At present, most submersible vehicles adopt buoyancy adjusting methods for realizing buoyancy compensation, which are roughly divided into two types: firstly, under the condition of ensuring that the weight of the device is not changed, the water discharge volume of the device is changed by changing the volume of the buoyancy oil bag, so that the aim of changing the average density of the device is fulfilled; for example, the invention patent with the publication number CN109334926B discloses a buoyancy adjusting system and method for a full-sea deep underwater glider, which adopts a pump and a hydraulic pressure booster to increase the pressure of output hydraulic oil, so as to complete the transfer of the hydraulic oil from an internal oil tank to an external oil bag and realize the buoyancy adjustment. On the premise of ensuring that the water discharge volume of the device is not changed, the weight of the device is changed by sucking and discharging seawater, and the aim of changing the average density of the submersible is fulfilled. For example, utility model patent No. CN208993904U discloses a buoyancy regulating system based on two-way sea water pump, which adopts two-way sea water pump to rotate forward and backward to regulate the volume of the sea water in the adjustable ballast tank, thereby realizing buoyancy regulation.
However, the hydraulic system of the current buoyancy regulating system is complex whether the average density is regulated by changing the volume or the weight of the submersible, and a pressure-resistant cabin capable of bearing the water depth pressure is required. Also, the pump needs to continuously power the system throughout operation. These problems cause great difficulties in downsizing the system and reducing the power consumption. Therefore, simplifying and improving the traditional buoyancy regulating mode becomes a necessary trend for the buoyancy regulating system to be light and small.
Disclosure of Invention
Aiming at one of the defects and the improvement requirements of the existing buoyancy regulating technology, the invention provides a system and a method for controlling variable-volume buoyancy regulating by a seawater pump, which fully utilize the sea depth pressure, realize the accurate regulation of the drainage volume of a reducing hydraulic cylinder by adopting the matching control of the seawater pump and a normally closed electromagnetic switch valve, fulfill the aim of buoyancy regulation and solve the problem of difficult miniaturization of the existing buoyancy regulating system.
In order to achieve the above object, according to one aspect of the present invention, there is provided a buoyancy regulating system for controlling variable volume of a seawater pump, comprising a pump end filter, a seawater pump, a motor, a check valve, an overflow valve, a reducing hydraulic cylinder, a normally closed electromagnetic switch valve and a cylinder end filter;
the reducing hydraulic cylinder comprises a large-diameter cavity A, a cavity B, a small-diameter cavity C and a piston connected with the large-diameter cavity A and the small-diameter cavity C at the cavity B;
the large-diameter cavity A is connected with a cylinder end filter, and the cylinder end filter is communicated with the marine environment;
the small-diameter cavity C is respectively connected with an outlet of a one-way valve, an inlet of an overflow valve and a normally closed electromagnetic switch valve, an inlet of the seawater pump is connected with a pump-end filter, an outlet of the seawater pump is connected with an inlet of the one-way valve, an outlet of the one-way valve is respectively connected with the small-diameter cavity C, an inlet of the overflow valve and the normally closed electromagnetic switch valve, and the pump-end filter, the outlet of the overflow valve and the normally closed electromagnetic switch valve are communicated with the marine environment; the sea water pump is connected with a motor.
Preferably, the piston in the reducing hydraulic cylinder is sealed by using a Gray ring.
To achieve the above object, according to another aspect of the present invention, there is provided a method for reducing buoyancy of a variable volume buoyancy regulating system controlled by a seawater pump, comprising the steps of:
opening a normally closed electromagnetic switch valve, wherein a large-diameter cavity A and a small-diameter cavity C of the reducing hydraulic cylinder are communicated with the marine environment, water depth pressure directly acts on the end face of the piston, the piston moves towards the small-diameter cavity C, and the system starts to work;
in the process that the piston of the reducing hydraulic cylinder moves to the small-diameter cavity C, the large-diameter cavity A absorbs water from the marine environment through the cylinder end filter, the small-diameter cavity C discharges water to the marine environment through the opened normally-closed electromagnetic switch valve, the drainage volume of the whole reducing hydraulic cylinder is continuously reduced, the gas pressure in the cavity B of the reducing hydraulic cylinder is gradually increased, and the buoyancy is continuously reduced;
closing the normally closed electromagnetic switch valve, sealing the small-diameter cavity C of the reducing hydraulic cylinder again, balancing the stress of the piston again, stopping the movement of the piston, keeping the drainage volume of the whole reducing hydraulic cylinder unchanged, and finishing the reduction of the buoyancy; in the whole process, the motor does not work all the time.
To achieve the above object, according to another aspect of the present invention, there is provided a method for controlling a variable volume buoyancy regulating system to increase buoyancy by a seawater pump, comprising the following steps:
starting the motor, driving the seawater pump to continuously increase the pressure of the large-diameter cavity C, so that the piston moves towards the large-diameter cavity A, and the system starts to work;
in the process that the piston of the reducing hydraulic cylinder moves towards the large-diameter end, the sea water is discharged from the ocean environment to the small-diameter cavity C of the reducing hydraulic cylinder through the pump end filter, the sea water pump and the one-way valve by the sea water pump, the large-diameter cavity A of the reducing hydraulic cylinder discharges water to the ocean environment through the cylinder end filter, the water discharge volume of the whole reducing hydraulic cylinder is continuously increased, the gas pressure in the cavity B of the reducing hydraulic cylinder is gradually reduced, and the buoyancy is continuously increased;
the motor is turned off, the small-diameter cavity C of the reducing hydraulic cylinder is closed again, the stress of the piston can reach balance again, the piston stops moving, the drainage volume of the whole reducing hydraulic cylinder is kept unchanged, and the buoyancy is increased; in the whole process, the normally closed electromagnetic switch valve is always in a closed state.
In order to achieve the above object, according to another aspect of the present invention, there is also provided a method for adjusting buoyancy by controlling a variable volume by a seawater pump, wherein the method comprises the steps of controlling a buoyancy adjusting system by a seawater pump;
the buoyancy adjusting method comprises the following steps of:
opening a normally closed electromagnetic switch valve, wherein a large-diameter cavity A and a small-diameter cavity C of the reducing hydraulic cylinder are communicated with the marine environment, water depth pressure directly acts on the end face of the piston, the piston moves towards the small-diameter cavity C, and the system starts to work;
in the process that the piston of the reducing hydraulic cylinder moves to the small-diameter cavity C, the large-diameter cavity A absorbs water from the marine environment through the cylinder end filter, the small-diameter cavity C discharges water to the marine environment through the opened normally-closed electromagnetic switch valve, the drainage volume of the whole reducing hydraulic cylinder is continuously reduced, the gas pressure in the cavity B of the reducing hydraulic cylinder is gradually increased, and the buoyancy is continuously reduced;
closing the normally closed electromagnetic switch valve, sealing the small-diameter cavity C of the reducing hydraulic cylinder again, balancing the stress of the piston again, stopping the movement of the piston, keeping the drainage volume of the whole reducing hydraulic cylinder unchanged, and finishing the reduction of the buoyancy; in the whole process, the motor does not work all the time;
the buoyancy adjusting method comprises the following steps of:
starting the motor, driving the seawater pump to continuously increase the pressure of the large-diameter cavity C, so that the piston moves towards the large-diameter cavity A, and the system starts to work;
in the process that the piston of the reducing hydraulic cylinder moves towards the large-diameter end, the sea water is discharged from the ocean environment to the small-diameter cavity C of the reducing hydraulic cylinder through the pump end filter, the sea water pump and the one-way valve by the sea water pump, the large-diameter cavity A of the reducing hydraulic cylinder discharges water to the ocean environment through the cylinder end filter, the water discharge volume of the whole reducing hydraulic cylinder is continuously increased, the gas pressure in the cavity B of the reducing hydraulic cylinder is gradually reduced, and the buoyancy is continuously increased;
the motor is turned off, the small-diameter cavity C of the reducing hydraulic cylinder is closed again, the stress of the piston can reach balance again, the piston stops moving, the drainage volume of the whole reducing hydraulic cylinder is kept unchanged, and the buoyancy is increased; in the whole process, the normally closed electromagnetic switch valve is always in a closed state.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. the buoyancy adjusting system provided by the invention has a simple structure, skillfully utilizes the change of the displacement volume of the hydraulic cylinder caused by the movement of the piston of the reducing hydraulic cylinder to finish the buoyancy adjusting target, thereby avoiding using a pressure-resistant adjustable ballast water tank and an elastic oil bag of the traditional buoyancy adjusting system and effectively reducing the weight and the volume of the system.
2. In the process of reducing buoyancy, the invention pushes the piston to move by the force generated by the seawater pressure acting on the two piston surfaces with different sizes, so as to reduce the drainage volume of the reducing hydraulic cylinder, and the system only needs to supply power to the normally closed electromagnetic switch valve, thereby fully utilizing the water depth pressure and easily realizing low-energy-consumption submergence.
3. In the process of reducing the buoyancy, part of energy is stored in the form of compressed gas by the cavity of the reducing hydraulic cylinder, and when the buoyancy needs to be increased, the part of energy can be released when the seawater pump drives the piston to move, so that the energy consumption needed in the floating process can be reduced to a certain extent.
Drawings
Fig. 1 is a schematic structural diagram of a seawater pump control variable volume buoyancy regulating system according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
As shown in fig. 1, the invention provides a buoyancy regulating system for controlling variable volume of a seawater pump, which comprises a pump end filter 1, a seawater pump 2, a motor 3, a one-way valve 4, an overflow valve 5, a reducing hydraulic cylinder 6, a normally closed electromagnetic switch valve 7 and a cylinder end filter 8; the reducing hydraulic cylinder 6 comprises a large-diameter cavity A, a cavity B, a small-diameter cavity C and a piston connected with the large-diameter cavity A and the small-diameter cavity C at the cavity B.
The large-diameter cavity A is connected with a cylinder end filter 8, the small-diameter cavity C is respectively connected with an outlet of a one-way valve 4, an inlet of an overflow valve 5 and a normally closed electromagnetic switch valve 7, an inlet of a sea water pump 2 is connected with the pump end filter 1, an outlet of the sea water pump 2 is connected with an inlet of the one-way valve 4, an outlet of the one-way valve 4 is respectively connected with the small-diameter cavity C, an inlet of the overflow valve 5 and the normally closed electromagnetic switch valve 7, and the pump end filter 1, an outlet of the overflow valve 5, the normally closed electromagnetic switch valve 7 and the cylinder end filter 8 are communicated with the marine environment.
The sea water pump 2 is connected with a motor 3 through a coupler, and the motor is preferably a direct current motor.
The large-diameter cavity A, the cavity B and the small-diameter cavity C of the reducing hydraulic cylinder 6 are sealed by using the Glae circle, so that the isolation among the cavities is ensured.
The buoyancy adjusting system of the invention changes the volume of the cavity B by controlling the movement of the piston of the reducing hydraulic cylinder 6, thereby realizing the buoyancy adjustment, when the piston moves to the small-diameter cavity C, the volume of the cavity B is reduced, the buoyancy of the device is reduced, when the piston moves to the large-diameter cavity A, the volume of the cavity B is increased, and the buoyancy of the device is increased.
The adjusting method of the seawater pump control variable volume buoyancy adjusting system comprises the following specific adjusting processes:
(1) reducing buoyancy
When the buoyancy of the submersible needs to be reduced, the normally closed electromagnetic switch valve 7 is powered on and opened, the small-diameter cavity C of the reducing hydraulic cylinder 6 is communicated with the marine environment through the normally closed electromagnetic switch valve 7, the ocean water depth pressure directly acts on the two piston end faces of the reducing hydraulic cylinder 6 at the moment, the piston can be subjected to thrust directed to the small-diameter cavity C due to the fact that a certain area difference exists between the large-diameter end and the small-diameter end of the piston of the reducing hydraulic cylinder 6, the thrust is related to the external ocean pressure and the area difference between the two ends of the reducing hydraulic cylinder 6, when the thrust is enough to overcome the resultant force generated by the friction force of the sealing ring and the air pressure in the cavity B, the piston of the reducing hydraulic cylinder 6 moves towards the small-diameter cavity C, and the system starts to work.
In the process that the piston of the reducing hydraulic cylinder 6 moves to the small-diameter cavity C, the large-diameter cavity A absorbs water from the marine environment through the cylinder end filter 8, the small-diameter cavity C discharges water to the marine environment through the opened normally-closed electromagnetic switch valve 7, the volume change of the large-diameter cavity A of the reducing hydraulic cylinder 6 is fast, the volume change of the small-diameter cavity C is slow, the volume of the whole reducing hydraulic cylinder 6 is reduced, the change value is the product of the displacement of the piston and the area of the two ends of the piston, the gas pressure in the closed cavity B of the reducing hydraulic cylinder 6 is gradually increased, and the buoyancy of the device is continuously reduced.
When the normally closed electromagnetic switch valve 7 is switched off after power failure, the small-diameter cavity C of the reducing hydraulic cylinder 6 is closed, the pressure in the cavity rises rapidly, the force acting on the piston becomes large rapidly, when the stress of the piston reaches balance again, the piston stops moving, the drainage volume of the whole reducing hydraulic cylinder 6 is kept unchanged, and the buoyancy is reduced. In the whole process, the motor does not work all the time.
(2) Increase buoyancy
When the buoyancy of the submersible needs to be increased, the power is supplied to the motor 3, the motor 3 drives the seawater pump 2 to work, so that the pressure of the small-diameter cavity C of the reducing hydraulic cylinder 6 is increased, and the force of the small-diameter cavity C, acting on the piston and pointing to the large-diameter cavity A, is gradually increased. At this time, the pressure of the large diameter chamber a of the reducing hydraulic cylinder 6 is always the sea depth pressure, and the force acting on the piston to the small diameter chamber C is always constant. When the resultant force of the force acting on the piston of the small-diameter cavity C and the gas in the cavity is enough to overcome the resultant force of the friction force of the sealing ring and the force acting on the piston of the large-diameter cavity A by the sea depth pressure, the piston of the reducing hydraulic cylinder 6 starts to move towards the large-diameter cavity A, and the system starts to work.
In the process that the piston of the reducing liquid cylinder 6 moves to the large-diameter cavity A, the large-diameter cavity A drains water to the marine environment through the cylinder end filter 8, the sea water pump 2 pumps the sea water from the marine environment to the small-diameter cavity C of the reducing liquid cylinder 6 through the pump end filter 1, the sea water pump 2 and the one-way valve 4, the volume of the large-diameter cavity A of the reducing liquid cylinder 6 is changed quickly, the volume of the small-diameter cavity C is changed slowly, the drainage volume of the whole reducing liquid cylinder 6 is increased, the change value is the product of the displacement of the piston and the areas of two ends of the piston, the gas pressure in the closed cavity B of the reducing liquid cylinder 6 is gradually reduced, and the buoyancy of the device is continuously increased.
When the motor 3 loses power and stops working, the seawater pump 2 does not inject seawater into the small-diameter cavity C of the reducing hydraulic cylinder 6, the small-diameter cavity C is sealed again, when the stress on the piston reaches balance again, the piston stops moving, the drainage volume of the whole reducing hydraulic cylinder 6 is kept unchanged, and the buoyancy is increased. In the whole process, the normally closed electromagnetic switch valve 7 does not work all the time.
In summary, the present invention has the following outstanding advantages:
the buoyancy adjusting system provided by the invention has a simple structure, skillfully utilizes the change of the displacement volume of the hydraulic cylinder caused by the movement of the piston of the reducing hydraulic cylinder to finish the buoyancy adjusting target, thereby avoiding using a pressure-resistant adjustable ballast water tank and an elastic oil bag of the traditional buoyancy adjusting system and effectively reducing the weight and the volume of the system.
In the process of reducing buoyancy, the invention pushes the piston to move by the force generated by the seawater pressure acting on the two piston surfaces with different sizes, so as to reduce the drainage volume of the reducing hydraulic cylinder, and the system only needs to supply power to the normally closed electromagnetic switch valve, thereby fully utilizing the water depth pressure and easily realizing low-energy-consumption submergence.
In the process of reducing the buoyancy, part of energy is stored in the form of compressed gas by the cavity of the reducing hydraulic cylinder, and when the buoyancy needs to be increased, the part of energy can be released when the seawater pump drives the piston to move, so that the energy consumption needed in the floating process can be reduced to a certain extent.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. The utility model provides a sea water pump control variable volume buoyancy governing system which characterized in that: the device comprises a pump end filter, a seawater pump, a motor, a one-way valve, an overflow valve, a reducing hydraulic cylinder, a normally closed electromagnetic switch valve and a cylinder end filter;
the reducing hydraulic cylinder comprises a large-diameter cavity A, a cavity B, a small-diameter cavity C and a piston connected with the large-diameter cavity A and the small-diameter cavity C at the cavity B;
the large-diameter cavity A is connected with a cylinder end filter, and the cylinder end filter is communicated with the marine environment;
the small-diameter cavity C is respectively connected with an outlet of a one-way valve, an inlet of an overflow valve and a normally closed electromagnetic switch valve, an inlet of the seawater pump is connected with a pump-end filter, an outlet of the seawater pump is connected with an inlet of the one-way valve, an outlet of the one-way valve is respectively connected with the small-diameter cavity C, an inlet of the overflow valve and the normally closed electromagnetic switch valve, and the pump-end filter, the outlet of the overflow valve and the normally closed electromagnetic switch valve are communicated with the marine environment; the sea water pump is connected with a motor.
2. The seawater pump controlled variable volume buoyancy regulating system of claim 1, wherein:
and the piston in the reducing hydraulic cylinder is sealed by a Gray ring.
3. A method for reducing buoyancy by a seawater pump controlled variable volume buoyancy regulating system according to any of claims 1-2, comprising the steps of:
opening a normally closed electromagnetic switch valve, wherein a large-diameter cavity A and a small-diameter cavity C of the reducing hydraulic cylinder are communicated with the marine environment, water depth pressure directly acts on the end face of the piston, the piston moves towards the small-diameter cavity C, and the system starts to work;
in the process that the piston of the reducing hydraulic cylinder moves to the small-diameter cavity C, the large-diameter cavity A absorbs water from the marine environment through the cylinder end filter, the small-diameter cavity C discharges water to the marine environment through the opened normally-closed electromagnetic switch valve, the drainage volume of the whole reducing hydraulic cylinder is continuously reduced, the gas pressure in the cavity B of the reducing hydraulic cylinder is gradually increased, and the buoyancy is continuously reduced;
closing the normally closed electromagnetic switch valve, sealing the small-diameter cavity C of the reducing hydraulic cylinder again, balancing the stress of the piston again, stopping the movement of the piston, keeping the drainage volume of the whole reducing hydraulic cylinder unchanged, and finishing the reduction of the buoyancy; in the whole process, the motor does not work all the time.
4. A method for controlling a variable volume buoyancy regulating system to increase buoyancy by a seawater pump according to any one of claims 1-2, comprising the steps of:
starting the motor, driving the seawater pump to continuously increase the pressure of the large-diameter cavity C, so that the piston moves towards the large-diameter cavity A, and the system starts to work;
in the process that the piston of the reducing hydraulic cylinder moves towards the large-diameter end, the sea water is discharged from the ocean environment to the small-diameter cavity C of the reducing hydraulic cylinder through the pump end filter, the sea water pump and the one-way valve by the sea water pump, the large-diameter cavity A of the reducing hydraulic cylinder discharges water to the ocean environment through the cylinder end filter, the water discharge volume of the whole reducing hydraulic cylinder is continuously increased, the gas pressure in the cavity B of the reducing hydraulic cylinder is gradually reduced, and the buoyancy is continuously increased;
the motor is turned off, the small-diameter cavity C of the reducing hydraulic cylinder is closed again, the stress of the piston can reach balance again, the piston stops moving, the drainage volume of the whole reducing hydraulic cylinder is kept unchanged, and the buoyancy is increased; in the whole process, the normally closed electromagnetic switch valve is always in a closed state.
5. A method for controlling variable volume buoyancy adjustment by a seawater pump, which is characterized in that the seawater pump as claimed in any one of claims 1-2 is adopted to control a variable volume buoyancy adjustment system;
the buoyancy adjusting method comprises the following steps of:
opening a normally closed electromagnetic switch valve, wherein a large-diameter cavity A and a small-diameter cavity C of the reducing hydraulic cylinder are communicated with the marine environment, water depth pressure directly acts on the end face of the piston, the piston moves towards the small-diameter cavity C, and the system starts to work;
in the process that the piston of the reducing hydraulic cylinder moves to the small-diameter cavity C, the large-diameter cavity A absorbs water from the marine environment through the cylinder end filter, the small-diameter cavity C discharges water to the marine environment through the opened normally-closed electromagnetic switch valve, the drainage volume of the whole reducing hydraulic cylinder is continuously reduced, the gas pressure in the cavity B of the reducing hydraulic cylinder is gradually increased, and the buoyancy is continuously reduced;
closing the normally closed electromagnetic switch valve, sealing the small-diameter cavity C of the reducing hydraulic cylinder again, balancing the stress of the piston again, stopping the movement of the piston, keeping the drainage volume of the whole reducing hydraulic cylinder unchanged, and finishing the reduction of the buoyancy; in the whole process, the motor does not work all the time;
the buoyancy adjusting method comprises the following steps of:
starting the motor, driving the seawater pump to continuously increase the pressure of the large-diameter cavity C, so that the piston moves towards the large-diameter cavity A, and the system starts to work;
in the process that the piston of the reducing hydraulic cylinder moves towards the large-diameter end, the sea water is discharged from the ocean environment to the small-diameter cavity C of the reducing hydraulic cylinder through the pump end filter, the sea water pump and the one-way valve by the sea water pump, the large-diameter cavity A of the reducing hydraulic cylinder discharges water to the ocean environment through the cylinder end filter, the water discharge volume of the whole reducing hydraulic cylinder is continuously increased, the gas pressure in the cavity B of the reducing hydraulic cylinder is gradually reduced, and the buoyancy is continuously increased;
the motor is turned off, the small-diameter cavity C of the reducing hydraulic cylinder is closed again, the stress of the piston can reach balance again, the piston stops moving, the drainage volume of the whole reducing hydraulic cylinder is kept unchanged, and the buoyancy is increased; in the whole process, the normally closed electromagnetic switch valve is always in a closed state.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112918651A (en) * | 2021-03-12 | 2021-06-08 | 中国船舶科学研究中心 | Buoyancy adjusting device and method for medium-shallow depth submersible |
| WO2022051810A1 (en) * | 2020-09-09 | 2022-03-17 | Y&R Allum Pty Ltd | Balanced piston pump for subsea use |
| CN114919723A (en) * | 2022-05-30 | 2022-08-19 | 大连海事大学 | Leading autonomic booster-type buoyancy governing system under water |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191014414A (en) * | 1910-02-26 | 1911-04-13 | George Francois Jaubert | An Improved Method of Running Internal Combustion Motors of Submarine or the like Boats during the Period of Submersion. |
| KR100651203B1 (en) * | 2005-12-23 | 2006-11-30 | 한국해양연구원 | Buoyancy and attitude control system for deep-sea unmaned submersibles |
| CN102248992A (en) * | 2011-05-13 | 2011-11-23 | 浙江大学 | Buoyancy adjusting device for underwater glider |
| CN106516057A (en) * | 2016-10-28 | 2017-03-22 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Hydraulic system used for adjusting buoyancy of full-ocean-depth submersible |
| US9605499B1 (en) * | 2016-09-07 | 2017-03-28 | China University Of Petroleum (East China) | Subsea wellhead pressure indicating and automatic adjusting device for deep-water dual-gradient drilling |
| CN106828844A (en) * | 2017-03-21 | 2017-06-13 | 中国海洋大学 | A kind of buoyancy adjustment equipment |
| CN107878716A (en) * | 2017-10-30 | 2018-04-06 | 北京精密机电控制设备研究所 | A kind of buoyancy regulating device based on sea water pump |
| CN109334926A (en) * | 2018-10-17 | 2019-02-15 | 华中科技大学 | A kind of buoyancy regulating system and method for the deep underwater glider in full sea |
| CN211223814U (en) * | 2019-12-23 | 2020-08-11 | 武汉华喜特种液压设备有限公司 | Variable volume buoyancy regulating system controlled by seawater pump |
-
2019
- 2019-12-23 CN CN201911340931.5A patent/CN110884634B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191014414A (en) * | 1910-02-26 | 1911-04-13 | George Francois Jaubert | An Improved Method of Running Internal Combustion Motors of Submarine or the like Boats during the Period of Submersion. |
| KR100651203B1 (en) * | 2005-12-23 | 2006-11-30 | 한국해양연구원 | Buoyancy and attitude control system for deep-sea unmaned submersibles |
| CN102248992A (en) * | 2011-05-13 | 2011-11-23 | 浙江大学 | Buoyancy adjusting device for underwater glider |
| US9605499B1 (en) * | 2016-09-07 | 2017-03-28 | China University Of Petroleum (East China) | Subsea wellhead pressure indicating and automatic adjusting device for deep-water dual-gradient drilling |
| CN106516057A (en) * | 2016-10-28 | 2017-03-22 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Hydraulic system used for adjusting buoyancy of full-ocean-depth submersible |
| CN106828844A (en) * | 2017-03-21 | 2017-06-13 | 中国海洋大学 | A kind of buoyancy adjustment equipment |
| CN107878716A (en) * | 2017-10-30 | 2018-04-06 | 北京精密机电控制设备研究所 | A kind of buoyancy regulating device based on sea water pump |
| CN109334926A (en) * | 2018-10-17 | 2019-02-15 | 华中科技大学 | A kind of buoyancy regulating system and method for the deep underwater glider in full sea |
| CN211223814U (en) * | 2019-12-23 | 2020-08-11 | 武汉华喜特种液压设备有限公司 | Variable volume buoyancy regulating system controlled by seawater pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022051810A1 (en) * | 2020-09-09 | 2022-03-17 | Y&R Allum Pty Ltd | Balanced piston pump for subsea use |
| CN112918651A (en) * | 2021-03-12 | 2021-06-08 | 中国船舶科学研究中心 | Buoyancy adjusting device and method for medium-shallow depth submersible |
| CN114919723A (en) * | 2022-05-30 | 2022-08-19 | 大连海事大学 | Leading autonomic booster-type buoyancy governing system under water |
| CN114919723B (en) * | 2022-05-30 | 2023-06-27 | 大连海事大学 | Front-mounted autonomous supercharged underwater buoyancy regulating system |
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