CN201176978Y - A deep sea water pressure energy storage hydraulic power source - Google Patents

Abstract

A deep sea water pressure energy storage type hydraulic power source comprises a pressure-bearing oil cylinder (14) and a non-pressure-bearing oil bin, wherein a hydraulic pipeline (40) connected with an oil return port of a hydraulic system (9) of a driving object is arranged at the bottom of the pressure-bearing oil cylinder (14), and a hydraulic pipeline (6) connected with a pressure oil port of the hydraulic system (9) of the driving object is arranged at the bottom of the non-pressure-bearing oil bin; a hydraulic pipeline (40) at the end of the pressure bearing oil cylinder is bridged on a hydraulic pipeline (6) at the end of the non-pressure bearing oil chamber through a branch oil path (41) which is sequentially connected with an oil pump (10) and a one-way valve (7) in series; the pressure-bearing oil cylinder (14) contains low-pressure hydraulic oil (32), and the non-pressure-bearing oil bin contains hydraulic oil (31) which keeps the same pressure with the external water. The utility model discloses utilize the pressure energy storage of deep sea water, can make hydraulic system on the deep sea electromechanical device obtain great powerful hydraulic power in the short time, specially adapted is in the deep sea operation, only less power supply source but need the hydraulic system of the great hydraulic power of short-time output, intermittent type nature work. Simple structure and reliable operation.

Description

A deep sea water pressure energy storage hydraulic power source

technical field

The utility model relates to a hydraulic power source used for various underwater sampling equipment, underwater drag body equipment, underwater work station and underwater engineering equipment, in particular to a hydraulic power source applied to deep sea electromechanical equipment.

Background technique

Many deep-sea electromechanical equipment adopt hydraulic transmission, and most of the driving motors of the hydraulic system need to support the mother ship from the sea surface to supply power through the umbilical cable. When the water level is deep (thousands of meters), the ability to supply power through the umbilical cable is weaker, generally only a few hundred watts, and the maximum does not exceed a few kilowatts. If the hydraulic system of the deep-sea electromechanical equipment is designed with a common hydraulic power source, its maximum hydraulic output power will not exceed the maximum power supply that the umbilical cable can provide.

Take the working status of the existing deep seabed sediment sampling equipment - the deep sea TV grab as an example. When working, it is first lowered from the marine scientific research ship to the seabed through the armored communication cable and winch equipment thousands of meters long, and then The deep-sea camera carried by it takes pictures of the seabed, and the operator on board finds the seabed sediment target to be grabbed through the uploaded real-time seabed image, and then starts its hydraulic system to grab the open-close grab bucket driven by the hydraulic cylinder on the electromechanical equipment. Take bottom sediment. Generally, the hydraulic power required for the normal operation of deep-sea TV grabs is 3-5 kilowatts. In most cases, the armored communication cables equipped with marine scientific research ships can only be used for communication, and the power they can transmit is only a few hundred. watts to 1 kW.

As mentioned above, at the moment when the deep-sea TV grab is grabbing the seabed sample, or when the deep-sea biological or sediment sampler is taking the sample, its hydraulic actuator must act quickly and powerfully, often requiring the ability to output more in a short period of time. High hydraulic power, which may exceed the maximum electrical power that the umbilical can provide. Under the current technical conditions, when encountering such a situation, we can only switch to underwater battery power supply technology. For example, deep-sea TV grabs generally only use airborne underwater battery power supply, and use armored communication cables for video communication. Currently, The reliability of underwater batteries that can be used in deep sea is not high, and there are many inconveniences in charging and maintenance. If the system performance index requirements are lowered, it will inevitably make the deep-sea electromechanical equipment unable to achieve the ideal working state.

Utility model content

In order to solve the above-mentioned technical defects, the utility model provides a hydraulic energy storage type hydraulic power source for deep-sea electromechanical equipment. The hydraulic system on the equipment can obtain high-power hydraulic power in a short time.

In order to achieve the above object, the technical solution adopted by the utility model is: it includes a pressure-bearing oil cylinder and a non-pressure-bearing oil tank, the bottom of the pressure-bearing oil cylinder has a hydraulic pipeline connected with the oil return port of the hydraulic system of the driving object, and the non-pressure oil tank At the bottom, there is a hydraulic pipeline connected to the pressure oil port of the hydraulic system of the driving object; the hydraulic pipeline at the end of the pressurized oil cylinder bridges the hydraulic pipeline at the end of the non-pressurized oil tank through a branch oil circuit connected in series with an oil pump and a check valve ; The pressurized oil cylinder contains low-pressure hydraulic oil, and the non-pressurized oil tank has hydraulic oil consistent with the external water pressure.

The working principle of the utility model device is:

When the utility model and the deep-sea electromechanical equipment driven by the utility model reach a certain depth under the sea, due to the pressure transmission effect of the external seawater, the hydraulic oil inside the non-pressurized oil tank will have a pressure that is basically equal to that of the external seawater; Since it is not connected to the external seawater, the hydraulic oil in it will have a low pressure equal to the vacuum or gas pressure in its cavity, and there will be a pressure difference between the hydraulic oil in the non-pressurized oil tank and the hydraulic oil in the pressurized oil cylinder, and The deeper the water depth, the greater the pressure difference. After the water depth reaches a certain depth, the pressure difference will drive the hydraulic system to work normally. If the hydraulic pipeline and hydraulic system are designed according to the high power standard, when the hydraulic oil in the non-pressurized oil tank flows into the pressurized oil cylinder, the hydraulic system can output a large hydraulic power within a certain period of time, and the length of this period depends on The oil storage capacity of the non-pressurized oil tank and the pressurized oil cylinder and the output power value, and the maximum hydraulic power that can be output only depends on the design power standard of the system and pipeline.

When the motor drives the oil pump to work, if the hydraulic system does not work or its power consumption is less than the output power of the oil pump, all or part of the hydraulic oil in the pressurized cylinder will be sent into the non-pressurized oil tank and enter the non-pressurized oil tank. The hydraulic oil in the pressure oil tank has hydraulic energy because it has a high pressure substantially equal to that of the external sea water. The process of pumping hydraulic oil from a pressurized cylinder (low pressure) to a non-pressurized oil tank (high pressure) is equivalent to storing energy for use when the hydraulic system requires short-term high-power output. When the hydraulic system only needs to work with a small power, the motor and oil pump can directly drive the hydraulic system to work.

The hydraulic power source of the utility model solves the problem that when there is no high-power power supply in the deep sea environment, the hydraulic system on the deep sea electromechanical equipment can obtain relatively high power hydraulic power in a short time, which greatly improves the use efficiency and reliability of the equipment. sex is a technical problem. The system structure is simple, reliable and easy to implement. It can be applied to various underwater sampling equipment, underwater towing equipment, underwater workstations, underwater engineering equipment, etc. It is especially suitable for deep sea operations, only a small power supply but needs to output large hydraulic power for a short time, intermittent Hydraulic system of deep sea electromechanical equipment for sexual work.

Description of drawings

Fig. 1, the structural representation of the utility model embodiment 1 (adopting non-pressurized oil cylinder);

Fig. 2, the structural representation of the utility model embodiment 2 (adopting soft rubber oil bag);

Fig. 3 is a schematic diagram of a deep-sea TV grab of the present utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Example 1:

Referring to Fig. 1, this embodiment includes a pressure-bearing oil cylinder 14 and a non-pressure-bearing oil cylinder 1, the pressure-bearing oil cylinder 14 contains low-pressure hydraulic oil 32, and the non-pressure oil cylinder 1 is divided into a hydraulic oil chamber by a piston 2 with a sealing ring 16 And the seawater cavity, wherein the seawater cavity is provided with an opening, which can introduce external seawater into the seawater cavity, and transmit the seawater pressure to the hydraulic oil 31 in the hydraulic oil cavity through the piston 2, so that it is basically consistent with the external pressure. If a certain pre-pressure needs to be provided for the hydraulic oil 31 in the hydraulic oil chamber, a spring 13 can be arranged in the seawater chamber.

The inside of the pressure-bearing oil cylinder 14 is divided into a hydraulic oil chamber and a cavity by a piston 12 with a sealing ring 17, and a low-pressure gas 15 or a spring 13 is installed in the cavity. If the pressure-bearing oil cylinder can be stably placed vertically when it is working, the piston 12 with the seal ring 17 inside it can also not be provided. At this time, there is no distinction between the hydraulic oil chamber and the cavity, but it must be ensured that the bottom of the oil cylinder 14 is connected to the hydraulic pressure when working. The inlet of the pipeline 40 is always lower than the oil level of the hydraulic oil 32 in the oil cylinder.

The bottom of the non-pressurized oil cylinder 1 is connected with the pressure oil port (P port) of the hydraulic system 9 as the driving object through the hydraulic pipeline 6, and the bottom of the pressure-bearing oil cylinder 14 is connected with the oil return port (T port) in the hydraulic system 9 through the hydraulic pipeline 40. The hydraulic pipeline 40 bridges the hydraulic pipeline 6 through a branch oil circuit 41. The branch oil circuit 41 is sequentially connected with the oil pump 10 and the check valve 7. The oil pump 10 is driven by the motor 11.

Both oil cylinders can be installed, or one of the smaller oil cylinders can be selected to be equipped with an oil quantity detector 4 to determine the oil storage capacity in the hydraulic oil chamber, and then determine the start-stop time of the motor 11 and oil pump 10 combination.

The above-mentioned motor 11 is a motor with relatively small power that can be used in a deep-sea environment, and the oil pump 10 is a high-pressure and low-flow hydraulic oil pump that can be used in a deep-sea environment. The hydraulic system 9 of the deep-sea electromechanical equipment is the driving object of the hydraulic power source of the utility model, and all its joints and interfaces need to be bidirectionally sealed from the inside to the outside.

Example 2

Referring to FIG. 2 , in this embodiment, the non-pressurized oil cylinder 1 of Embodiment 1 is replaced by a soft rubber oil bladder 18 .

The non-pressurized oil cylinder 1 or the soft rubber oil bag 18 can be used in parallel, and the pressure oil cylinder can also be used in parallel. All joints and interfaces in the device of the utility model need to be bidirectionally sealed from the inside to the outside, and seals such as bidirectional sealing rings can be arranged at all connections.

A cut-off valve 5 can be installed on the hydraulic pipeline 6 connected to the bottom of the non-pressure oil cylinder 1 or the soft rubber oil bag 18, when the utility model and the deep-sea electromechanical equipment driven by the utility model are in land test operation or in relatively shallow water depth test operation, The pressure of the hydraulic oil 31 in the non-pressurized oil cylinder or the soft rubber oil bag is not enough. At this time, the stop valve 5 can be closed, and the hydraulic oil cylinder of the working equipment can be directly driven by the motor oil pump group. Although the hydraulic drive power is small, the hydraulic oil cylinder moves slowly. , but still be able to complete the action.

A bypass check valve 8 connected in parallel with the oil pump 10 is also set on the branch oil circuit 41. If there is a low-pressure gas 15 or a spring 13 in the cavity of the pressure-bearing oil cylinder 14, then when the utility model and the driven deep-sea electromechanical During the return process of the equipment from the bottom to the top in the deep sea, since the pressure of the hydraulic oil 31 in the non-pressurized oil cylinder 1 or the soft rubber oil bag 18 gradually returns to atmospheric pressure, the pressure provided by the spring 13 or the gas 15 in the cavity of the pressure-bearing oil cylinder 14 When greater than one atmospheric pressure, the hydraulic oil 32 in the pressurized oil cylinder 14 will automatically return to the non-pressurized oil cylinder 1 or the soft rubber oil bag 18 through the check valve 8, without starting the motor oil pump 10 to pump.

Applications:

Referring to Figure 3, the deep-sea TV grab can obtain about one kilowatt of power from the armored cable at most, part of which needs to be used by the camera and control system, and the power that can be allocated to the hydraulic system motor is less than 700 watts. Therefore, for the deep-sea TV grab hydraulic The system is equipped with a 500-watt motor. During the process of lowering the deep-sea TV grab to the seabed and searching for the grab target, the motor 11 is started, and the high-pressure and small-flow oil pump 10 is driven by the motor 11 to pump all the hydraulic oil 32 in the pressure-bearing cylinder 14. In the soft rubber oil bag 18, it is decided when to stop the motor 11 according to the oil level detector 4 signal. Usually, when the water depth is greater than or equal to 200 meters, the hydraulic oil 31 in the soft rubber oil bladder 18 has a relatively high pressure, thereby storing a certain amount of hydraulic energy. When the deep-sea TV grab finds the grab target and needs to grab, the electromagnetic hydraulic reversing valve 20 is pushed to the left position through the control signal, and the hydraulic oil 31 in the soft rubber oil bag 18 is reduced to an appropriate pressure by the pressure reducing valve 19 and then The electromagnetic reversing valve 20 flows into the rodless cavity of the two hydraulic cylinders 21 to push the grab bucket body 22 to close up and grab the target; the hydraulic oil in the rod cavity of the two hydraulic cylinders 21 passes through the electromagnetic reversing valve 20 to the bearing. Pressure oil cylinder 14 returns oil. If it is found that the target object is not grasped successfully, the hydraulic reversing valve 20 can be operated to make the bucket body 22 open again. Usually, the process of grasping needs to be repeated several times to succeed. In the process of opening the bucket body 22 to search for the grab target again, the motor 11 can be started to pump the hydraulic oil 32 returned to the pressure-bearing cylinder 14 back to the soft rubber oil bag 18 to reserve hydraulic energy for the next operation. grab action.

The utility model maintains a coordinated design with the hydraulic system of the deep-sea TV grab bucket driven by the hydraulic cylinder 21. During the closing and opening process of the bucket body 22 driven by the hydraulic cylinder 21, the hydraulic energy stored in the hydraulic oil 31 in the soft rubber oil bag 18 can be kept within a short period of time. release in a short time, so as to obtain a large hydraulic power output in a short time, and complete the grasping or opening action; The required power is also very small, which can be completely solved by power supply through armored communication cables.

Claims (10)

1. A deep sea water pressure energy storage hydraulic power source, characterized in that it includes a pressure-bearing oil cylinder (14) and a non-pressure-bearing oil tank, and the bottom of the pressure-bearing oil cylinder (14) has a hydraulic system (9) with the driving object The hydraulic pipeline (40) connected to the oil return port of the non-pressurized oil tank has a hydraulic pipeline (6) connected with the pressure oil port of the hydraulic system (9) of the driving object at the bottom of the non-pressurized oil tank; A branch oil circuit (41) connected in series with an oil pump (10) and a one-way valve (7) is straddled on the hydraulic pipeline (6) at the end of the non-pressurized oil tank; the pressurized oil cylinder (14) contains a low-pressure Hydraulic oil (32), the hydraulic oil (31) that keeps consistent with external water pressure is arranged in the non-pressurized oil tank. 2. The deep sea water pressure energy storage hydraulic power source according to claim 1, characterized in that: the non-pressurized oil tank is a non-pressurized oil cylinder (1), and its interior is composed of a piston with a sealing ring (16) (2) Separated into a hydraulic oil chamber and a seawater chamber communicating with the outside world, the hydraulic oil chamber is connected with other components through a hydraulic pipeline (6), and a spring is arranged in the seawater chamber. 3. The deep sea water pressure energy storage hydraulic power source according to claim 1, characterized in that: the non-pressurized oil tank is a soft rubber oil bladder (18) containing hydraulic oil. 4. The deep sea water pressure energy storage hydraulic power source according to claim 1, 2 or 3, characterized in that: the inside of the pressure-bearing cylinder (14) is divided into A hydraulic oil cavity and a cavity, wherein the hydraulic oil cavity is connected with other components through a hydraulic pipeline (40). 5. The deep sea water pressure energy storage hydraulic power source according to claim 4, characterized in that: the cavity of the pressure-bearing oil cylinder (14) is vacuum or gas with a lower pressure, or a spring (13 ). 6. The deep sea water pressure energy storage hydraulic power source according to claim 2, characterized in that: among the pressure-bearing oil cylinder (14) and the non-pressure-bearing oil cylinder (1), at least one oil cylinder with a smaller capacity An oil level detector (4) is installed. 7. The deep sea water pressure energy storage hydraulic power source according to claim 1, characterized in that a shut-off valve (5) is installed on the hydraulic pipeline (6) connected to the bottom of the non-pressurized oil tank. 8. The deep sea water pressure energy storage hydraulic power source according to claim 2 or 3, characterized in that: the hydraulic pipeline (6) connected to the bottom of the non-pressurized oil cylinder (1) or the soft rubber oil bag (18) A shut-off valve (5) is installed on it. 9. The deep sea water pressure energy storage hydraulic power source according to claim 1, 2 or 3, characterized in that: there is a check valve (8) connected in parallel with the oil pump (10) on the branch oil circuit (41) . 10. The deep sea water pressure energy storage hydraulic power source according to claim 1, 2 or 3, characterized in that: all joints and interfaces are equipped with internal and external bidirectional sealing devices.

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