CN110884634B - Sea water pump control variable-volume buoyancy adjusting system and method - Google Patents
Sea water pump control variable-volume buoyancy adjusting system and method Download PDFInfo
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- CN110884634B CN110884634B CN201911340931.5A CN201911340931A CN110884634B CN 110884634 B CN110884634 B CN 110884634B CN 201911340931 A CN201911340931 A CN 201911340931A CN 110884634 B CN110884634 B CN 110884634B
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- 239000013535 sea water Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims description 46
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 27
- 230000001276 controlling effect Effects 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229920002148 Gellan gum Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000013575 regulation of buoyancy Effects 0.000 description 1
- 238000005070 sampling Methods 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 utility model discloses a sea water pump control variable volume buoyancy regulating system, which is characterized in that: 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 one-way valve, an overflow valve and a normally-closed electromagnetic switch valve, the inlet of the seawater pump is connected with a pump end filter, the outlet of the seawater pump is connected with the one-way 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 utility model controls the piston movement of the reducing hydraulic cylinder to change the drainage volume, thereby realizing buoyancy adjustment and having the unique advantages of simple system structure and low energy consumption.
Description
Technical Field
The utility model belongs to the field of diving equipment, and particularly relates to a sea water pump control variable volume buoyancy adjusting system and method.
Background
When the submersible is used for exploration, scientific investigation and other operations in the ocean, buoyancy and gravity unbalance can be caused by sampling, seawater density change and other factors. To ensure a steady state required for proper operation of the submersible, the buoyancy adjustment system compensates for the buoyancy of the submersible by varying the average density of the submersible itself.
Currently, most submersible devices are roughly classified into two types of buoyancy adjustment methods for realizing buoyancy compensation: firstly, under the condition of ensuring that the weight of the device is unchanged, the volume of the buoyancy oil bag is changed, and the drainage volume of the device is changed, so that the aim of changing the average density of the device is fulfilled; for example, the utility model patent with publication number CN109334926B discloses a buoyancy adjusting system and method for a full sea deep water glider, wherein a pump and a hydraulic booster are used to increase the pressure of output hydraulic oil, thereby completing the transfer of hydraulic oil from an internal oil tank to an external oil bag and realizing buoyancy adjustment. Secondly, on the premise of ensuring that the drainage volume of the device is unchanged, the weight of the device is changed by sucking and discharging the seawater, so that the aim of changing the average density of the submersible is fulfilled. For example, the utility model patent with publication number of CN208993904U discloses a buoyancy adjusting system based on a bidirectional seawater pump, which adopts the bidirectional seawater pump to positively and negatively adjust the volume of seawater in an adjustable ballast tank to realize buoyancy adjustment.
However, the current buoyancy adjusting system realizes the adjustment of average density by changing the volume or weight of the submersible, and the hydraulic system is complex, so that a pressure-resistant bin capable of bearing the water depth pressure is required. And the pump needs to continuously power the system throughout operation. These problems have presented significant difficulties in both the light miniaturization and the reduction of energy consumption of the system. Therefore, simplification and improvement of the conventional buoyancy adjustment manner becomes an inevitable trend of miniaturization of the buoyancy adjustment system.
Disclosure of Invention
Aiming at one of the defects and improvement requirements of the current buoyancy adjusting technology, the utility model provides a sea water pump control variable volume buoyancy adjusting system and a sea water pump control variable volume buoyancy adjusting method, sea depth pressure is fully utilized, the matching control of a sea water pump and a normally closed electromagnetic switch valve is adopted, the accurate adjustment of the drainage volume of a reducing hydraulic cylinder is realized, the buoyancy adjusting aim is fulfilled, and the problem that the existing buoyancy adjusting system is difficult to light and small is solved.
In order to achieve the above object, according to one aspect of the present utility model, there is provided a seawater pump control variable volume buoyancy adjustment system, 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 the one-way valve, an inlet of the overflow valve and the normally-closed electromagnetic switch valve, an inlet of the seawater pump is connected with the 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 ocean environment; the sea water pump is connected with a motor.
Preferably, the piston in the reducing hydraulic cylinder is sealed by using a Gellan ring.
In order to achieve the above object, according to another aspect of the present utility model, there is also provided a method for controlling a variable volume buoyancy adjustment system to reduce buoyancy by a seawater pump as described above, 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, the water depth pressure directly acts on the end surface of a piston, the piston moves towards the small-diameter cavity C, and the system starts to work;
in the process of moving the piston of the reducing hydraulic cylinder to the small-diameter cavity C, the large-diameter cavity A absorbs water from the ocean environment through the cylinder end filter, the small-diameter cavity C drains water to the ocean 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, closing 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 buoyancy reduction; in the whole process, the motor is not operated all the time.
In order to achieve the above object, according to another aspect of the present utility model, there is also provided a method for controlling a variable volume buoyancy adjustment system to increase buoyancy by a seawater pump as described above, comprising the steps of:
starting a motor, wherein the motor drives a sea water pump to continuously increase the pressure of the small-diameter cavity C, so that a piston moves towards the large-diameter cavity A, and the system starts to work;
in the process of moving the piston of the reducing hydraulic cylinder to the large-diameter end, the seawater pump leads seawater to pass through the pump end filter, the seawater pump and the one-way valve from the sea environment to the small-diameter cavity C of the reducing hydraulic cylinder, the large-diameter cavity A of the reducing hydraulic cylinder discharges water to the sea 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;
closing the motor, closing the small-diameter cavity C of the reducing hydraulic cylinder again, balancing the stress of the piston again, stopping the movement of the piston, and keeping the drainage volume of the whole reducing hydraulic cylinder unchanged after 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 utility model, there is also provided a method for controlling variable volume buoyancy adjustment of a seawater pump, using a seawater pump control variable volume buoyancy adjustment system as described above;
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, the water depth pressure directly acts on the end surface of a piston, the piston moves towards the small-diameter cavity C, and the system starts to work;
in the process of moving the piston of the reducing hydraulic cylinder to the small-diameter cavity C, the large-diameter cavity A absorbs water from the ocean environment through the cylinder end filter, the small-diameter cavity C drains water to the ocean 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, closing 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 buoyancy reduction; in the whole process, the motor is not operated all the time;
the buoyancy adjusting method comprises the following steps of:
starting a motor, wherein the motor drives a sea water pump to continuously increase the pressure of the small-diameter cavity C, so that a piston moves towards the large-diameter cavity A, and the system starts to work;
in the process of moving the piston of the reducing hydraulic cylinder to the large-diameter end, the seawater pump leads seawater to pass through the pump end filter, the seawater pump and the one-way valve from the sea environment to the small-diameter cavity C of the reducing hydraulic cylinder, the large-diameter cavity A of the reducing hydraulic cylinder discharges water to the sea 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;
closing the motor, closing the small-diameter cavity C of the reducing hydraulic cylinder again, balancing the stress of the piston again, stopping the movement of the piston, and keeping the drainage volume of the whole reducing hydraulic cylinder unchanged after the buoyancy is increased; in the whole process, the normally closed electromagnetic switch valve is always in a closed state.
The above-described preferred technical features may be combined with each other as long as they do not collide with each other.
In general, the above technical solutions conceived by the present utility model have the following beneficial effects compared with the prior art:
1. the buoyancy regulating system provided by the utility model has a simple structure, skillfully utilizes the change of the drainage volume of the hydraulic cylinder caused by the movement of the piston of the hydraulic cylinder with different diameters to complete the buoyancy regulating target, thereby avoiding the use of a pressure-resistant adjustable ballast water tank and an elastic oil bag of the traditional buoyancy regulating system and effectively reducing the weight and the volume of the system.
2. In the process of reducing buoyancy, the hydraulic pressure of the sea acts on the two piston surfaces with different sizes to generate force to push the piston to move, so that the drainage volume of the reducing hydraulic cylinder is reduced, the system only needs to supply power to the normally closed electromagnetic switch valve, the water depth pressure is fully utilized, and the low-energy consumption submergence is easy to realize.
3. In the process of reducing the buoyancy, a 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 sea water 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 diagram of a seawater pump control variable volume buoyancy adjustment system according to an embodiment of the utility model.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other. The present utility model will be described in further detail with reference to the following embodiments.
As shown in fig. 1, the utility model provides a seawater pump control variable volume buoyancy regulating system, 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 the cylinder end filter 8, the small-diameter cavity C is respectively connected with the outlet of the one-way valve 4, the inlet of the overflow valve 5 and the normally-closed electromagnetic switch valve 7, the inlet of the seawater pump 2 is connected with the pump end filter 1, the outlet of the seawater pump 2 is connected with the inlet of the one-way valve 4, the outlet of the one-way valve 4 is respectively connected with the small-diameter cavity C, the inlet of the overflow valve 5 and the normally-closed electromagnetic switch valve 7, and the pump end filter 1, the outlet of the overflow valve 5, the normally-closed electromagnetic switch valve 7 and the cylinder end filter 8 are all communicated with the marine environment.
The sea water pump 2 is connected with a motor 3, preferably a direct current motor, through a coupling.
And the large-diameter cavity A, the cavity B and the small-diameter cavity C of the reducing hydraulic cylinder 6 are sealed by using a Gelai ring, so that the isolation between the large-diameter cavity A, the cavity B and the small-diameter cavity C is ensured.
According to the buoyancy regulating system, the volume of the cavity B is changed by controlling the piston of the reducing hydraulic cylinder 6 to move, so that buoyancy regulation is realized, when the piston moves towards the small-diameter cavity C, the volume of the cavity B is reduced, the buoyancy of the device is reduced, when the piston moves towards the large-diameter cavity A, the volume of the cavity B is increased, and the buoyancy of the device is increased.
The adjusting method for controlling the variable-volume buoyancy adjusting system by adopting the seawater pump comprises the following specific adjusting process:
(1) Reducing buoyancy
When the buoyancy of the device needs to be reduced, the normally closed electromagnetic switch valve 7 is electrically opened, the small diameter cavity C of the reducing hydraulic cylinder 6 is communicated with the ocean environment through the normally closed electromagnetic switch valve 7, at the moment, ocean water depth pressure directly acts on two piston end faces of the reducing hydraulic cylinder 6, as 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 piston can receive a thrust pointing to the small diameter cavity C, the thrust is related to the external ocean pressure and the area difference between the two ends of the reducing hydraulic cylinder 6, and 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 of moving the piston of the reducing hydraulic cylinder 6 to the small-diameter cavity C, the large-diameter cavity A absorbs water from the ocean environment through the cylinder end filter 8, the small-diameter cavity C discharges water to the ocean environment through the opened normally closed electromagnetic switch valve 7, the volume of the large-diameter cavity A of the reducing hydraulic cylinder 6 changes rapidly, the volume of the small-diameter cavity C changes slowly, the volume of the discharged water of the whole reducing hydraulic cylinder 6 becomes smaller, the change value of the volume is the product of the displacement of the piston and the areas of the two ends of the piston, the gas pressure in the closed cavity B of the reducing hydraulic cylinder 6 gradually rises, and the buoyancy of the device continuously decreases.
When the normally closed electromagnetic switch valve 7 is closed in a power-off way, the small-diameter cavity C of the reducing hydraulic cylinder 6 is closed, the pressure in the cavity is rapidly increased, the force acting on the piston is rapidly increased, when the stress of the piston reaches balance again, the piston stops moving, and after that, the drainage volume of the whole reducing hydraulic cylinder 6 is kept unchanged, and the buoyancy is reduced. In the whole process, the motor is not operated all the time.
(2) Increasing buoyancy
When the buoyancy of the device needs to be increased, the motor 3 is powered, 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 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 cylinder 6 is always sea depth pressure, and the force acting on the piston to the small diameter chamber C is always constant. The combined 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 combined 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, and the piston of the reducing hydraulic cylinder 6 starts to move towards the large-diameter cavity A, so that the system starts to work.
In the process of moving the piston of the reducing hydraulic cylinder 6 to the large-diameter cavity A, the large-diameter cavity A drains water to the ocean environment through the cylinder end filter 8, the seawater pump 2 pumps seawater from the ocean environment to the small-diameter cavity C of the reducing hydraulic cylinder 6 through the pump end filter 1, the seawater pump 2 and the one-way valve 4, the volume change of the large-diameter cavity A of the reducing hydraulic cylinder 6 is quick, the volume change of the small-diameter cavity C is slow, the drainage volume of the whole reducing hydraulic cylinder 6 is large, the change value of the drainage volume is the product of the displacement of the piston and the area of two ends of the piston, the pressure of gas in the closed cavity B of the reducing hydraulic cylinder 6 is gradually reduced, and the buoyancy of the device is continuously increased.
When the motor 3 is powered off 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 closed again, when the stress on the piston reaches balance again, the piston stops moving, and after that, 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 is always not operated.
In summary, the present utility model has the following outstanding advantages:
the buoyancy regulating system provided by the utility model has a simple structure, skillfully utilizes the change of the drainage volume of the hydraulic cylinder caused by the movement of the piston of the hydraulic cylinder with different diameters to complete the buoyancy regulating target, thereby avoiding the use of a pressure-resistant adjustable ballast water tank and an elastic oil bag of the traditional buoyancy regulating system and effectively reducing the weight and the volume of the system.
In the process of reducing buoyancy, the hydraulic pressure of the sea acts on the two piston surfaces with different sizes to generate force to push the piston to move, so that the drainage volume of the reducing hydraulic cylinder is reduced, the system only needs to supply power to the normally closed electromagnetic switch valve, the water depth pressure is fully utilized, and the low-energy consumption submergence is easy to realize.
In the process of reducing the buoyancy, a 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 sea water 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 readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (3)
1. The buoyancy reducing method of the sea water pump control variable-volume buoyancy regulating system is characterized in that the sea water pump control variable-volume buoyancy regulating system comprises a pump end filter, a sea water 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 the one-way valve, an inlet of the overflow valve and the normally-closed electromagnetic switch valve, an inlet of the seawater pump is connected with the 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 ocean environment; the sea water pump is connected with a motor;
the buoyancy reducing method for controlling the variable-volume buoyancy regulating system by the seawater pump 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, the water depth pressure directly acts on the end surface of a piston, the piston moves towards the small-diameter cavity C, and the system starts to work;
in the process of moving the piston of the reducing hydraulic cylinder to the small-diameter cavity C, the large-diameter cavity A absorbs water from the ocean environment through the cylinder end filter, the small-diameter cavity C drains water to the ocean 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, closing 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 buoyancy reduction; in the whole process, the motor is not operated all the time.
2. The method for increasing the buoyancy of the sea water pump control variable-volume buoyancy regulating system is characterized in that the sea water pump control variable-volume buoyancy regulating system comprises a pump end filter, a sea water 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 the one-way valve, an inlet of the overflow valve and the normally-closed electromagnetic switch valve, an inlet of the seawater pump is connected with the 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 ocean environment; the sea water pump is connected with a motor;
the buoyancy reducing method for controlling the variable-volume buoyancy regulating system by the seawater pump comprises the following steps of:
starting a motor, wherein the motor drives a sea water pump to continuously increase the pressure of the small-diameter cavity C, so that a piston moves towards the large-diameter cavity A, and the system starts to work;
in the process of moving the piston of the reducing hydraulic cylinder to the large-diameter end, the seawater pump leads seawater to pass through the pump end filter, the seawater pump and the one-way valve from the sea environment to the small-diameter cavity C of the reducing hydraulic cylinder, the large-diameter cavity A of the reducing hydraulic cylinder discharges water to the sea 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;
closing the motor, closing the small-diameter cavity C of the reducing hydraulic cylinder again, balancing the stress of the piston again, stopping the movement of the piston, and keeping the drainage volume of the whole reducing hydraulic cylinder unchanged after the buoyancy is increased; in the whole process, the normally closed electromagnetic switch valve is always in a closed state.
3. A buoyancy adjusting method for controlling a variable-volume buoyancy adjusting system of a seawater pump is characterized in that,
the seawater pump control variable-volume buoyancy regulating system 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 the one-way valve, an inlet of the overflow valve and the normally-closed electromagnetic switch valve, an inlet of the seawater pump is connected with the 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 ocean environment; the sea water pump is connected with a motor;
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, the water depth pressure directly acts on the end surface of a piston, the piston moves towards the small-diameter cavity C, and the system starts to work;
in the process of moving the piston of the reducing hydraulic cylinder to the small-diameter cavity C, the large-diameter cavity A absorbs water from the ocean environment through the cylinder end filter, the small-diameter cavity C drains water to the ocean 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, closing 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 buoyancy reduction; in the whole process, the motor is not operated all the time;
the buoyancy adjusting method comprises the following steps of:
starting a motor, wherein the motor drives a sea water pump to continuously increase the pressure of the small-diameter cavity C, so that a piston moves towards the large-diameter cavity A, and the system starts to work;
in the process of moving the piston of the reducing hydraulic cylinder to the large-diameter end, the seawater pump leads seawater to pass through the pump end filter, the seawater pump and the one-way valve from the sea environment to the small-diameter cavity C of the reducing hydraulic cylinder, the large-diameter cavity A of the reducing hydraulic cylinder discharges water to the sea 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;
closing the motor, closing the small-diameter cavity C of the reducing hydraulic cylinder again, balancing the stress of the piston again, stopping the movement of the piston, and keeping the drainage volume of the whole reducing hydraulic cylinder unchanged after the buoyancy is increased; in the whole process, the normally closed electromagnetic switch valve is always in a closed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911340931.5A CN110884634B (en) | 2019-12-23 | 2019-12-23 | Sea water pump control variable-volume buoyancy adjusting system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911340931.5A CN110884634B (en) | 2019-12-23 | 2019-12-23 | Sea water pump control variable-volume buoyancy adjusting system and method |
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| CN110884634A CN110884634A (en) | 2020-03-17 |
| CN110884634B true CN110884634B (en) | 2023-12-19 |
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| CN201911340931.5A Active CN110884634B (en) | 2019-12-23 | 2019-12-23 | Sea water pump control variable-volume buoyancy adjusting system and method |
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| AU2021339466A1 (en) * | 2020-09-09 | 2023-05-25 | Y&R Allum Pty Ltd | Balanced piston pump for subsea use |
| CN112918651B (en) * | 2021-03-12 | 2022-02-18 | 中国船舶科学研究中心 | Buoyancy adjusting device and method for medium-shallow depth submersible |
| 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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