Hydraulic pump station

Abstract

A hydraulic pump station comprises an oil immersed motor variable pump set composed of a main pump set unit and an auxiliary pump set unit, and the two pump sets are connected with a flow distribution valve set. The flow distribution valve group is provided with a proportional overflow valve capable of regulating pressure and an electromagnetic overflow valve capable of limiting pressure; the proportional overflow valve and the electromagnetic overflow valve are electrically connected with the electric control unit through cables respectively; the oil return filter group is connected with an oil return pipeline of the actuating mechanism and is fixed on an oil tank shell beside the flow distribution valve group; a variable pump set of the oil immersed motor is arranged in a closed oil tank; the flow distribution valve group is connected with the executing mechanism through a hydraulic pipeline; and the electric control unit is electrically connected with the sensor, the flow distribution valve group and each pump group unit through a cable. The integrated hydraulic pump station shared by multiple users is simple in structure, light in weight, small in occupied space, low in noise, small in resource cost and low in noise and vibration, and the operation reliability and guarantee are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic systems, and in particular relates to a hydraulic pump station. Background Art

[0002] At present, multiple hydraulic equipment are generally arranged at the stern of a ship, and each equipment is independent of each other in function. Each hydraulic equipment is mainly composed of a hydraulic pump station, an electronic control system, and an actuator. Each hydraulic pump station independently provides power for the operation of the corresponding hydraulic equipment. The electronic control system realizes the operation control and status monitoring of the hydraulic equipment. The actuators are scattered at different positions on the ship. The hydraulic cylinder or motor drives the actuator to realize the action of each hydraulic equipment. Each pump station reaches each actuator by laying its own pipeline, and lays cables to each electrical control unit. The above-mentioned multiple existing hydraulic equipment has its own hydraulic oil source and cannot be shared. Each pump station lays its own pipeline, resulting in a large oil source, a large installed weight, and occupies too much space in the hull cabin. Among them, hydraulic equipment is often in an idle state without starting to run, resulting in excessive installed power, which does not meet the development needs of small space occupation and light weight of ships. Due to the large number of hydraulic equipment, the space pipe layout is complex, and the installation and maintenance are difficult. When multiple hydraulic equipment are in operation, the noise reflection causes the noise level to increase and the vibration to increase, which affects the passengers on the ship and easily causes other equipment on the ship to be damaged, affecting the normal and safe operation of each hydraulic equipment.

[0003] Therefore, an integrated hydraulic pump station with a simple structure, lightweight, small footprint and low noise is very necessary in the design of reducing the specifications, quantity and structure of components in an integrated hydraulic pump station shared by multiple users to reduce the noise and vibration during operation and improve the reliability and security of the hydraulic pump station operation. Summary of the invention

[0004] The present invention provides a hydraulic pump station for solving the problems that the conventional multiple hydraulic equipments have high weight and space resource cost, serious noise and vibration, and the reliability of the hydraulic pump station operation is difficult to ensure.

[0005] The purpose of the present invention and the solution to the technical problem are achieved by adopting the following technical solutions.

[0006] The present invention provides a hydraulic pump station, which comprises: an oil tank for storing and dissipating heat oil, a main pump group unit arranged in the oil tank, a distribution valve group arranged on an outer shell of the oil tank and connected to the main pump group unit through a pipeline, an electronic control unit arranged on a side wall of the oil tank, and a cooler arranged on a side of the oil tank; the main pump group unit is connected to an upper cover plate of the oil tank and connected to the distribution valve group through a pipeline; the distribution valve group is installed on a mounting seat arranged outside the oil tank; the distribution valve group is respectively connected to each actuator through a pipeline; the electronic control unit is respectively electrically connected to a sensor, the distribution valve group and the main pump group unit installed in the oil tank by a cable.

[0007] As an optional embodiment of the present invention, the hydraulic pump station further comprises an auxiliary pump unit, the auxiliary pump unit is connected to the distribution valve group by a pipeline, and the top plate of the auxiliary pump unit is connected to the upper cover plate of the oil tank.

[0008] As an optional implementation of the present invention, the hydraulic pump station further includes an oil return filter group, and the oil return pipeline of the oil return filter group actuator is connected to the loop.

[0009] As an optional embodiment of the present invention, the main pump group unit includes an oil-immersed motor, a hydraulic pump, a throttle valve and a flow meter connected in sequence on the main pump control circuit; the oil-immersed motor and the hydraulic pump are connected by a connecting piece; the hydraulic pump and the throttle valve are connected by a pipeline; the throttle valve and the flow meter are arranged on the top plate of the main pump group unit.

[0010] As an optional implementation of the present invention, a hanger is provided between the oil-immersed motor and the top plate, and the hanger and the oil-immersed motor are connected via a first elastic vibration damper.

[0011] As an optional embodiment of the present invention, the hydraulic pump station further includes a second elastic shock absorber, which is arranged at the bottom outside the oil tank, and the second elastic shock absorber and the first elastic shock absorber are adapted to form a two-stage vibration isolation structure.

[0012] As an optional embodiment of the present invention, the distribution valve group includes an oil distribution valve block, a pressure measuring and exhaust joint and a distribution valve group sensor arranged next to the oil distribution valve block, and a control valve component and an oil inlet arranged on the upper part of the oil distribution valve block; the oil inlet is connected to the main pump group unit through a pipeline; the control valve component is electrically connected to the electronic control unit through cables.

[0013] As an optional embodiment of the present invention, the control valve component includes: a two-way reversing valve adjacent to the pressure measuring and exhaust joint, an electromagnetic conversion valve arranged on the sensor side of the distribution valve group, and a proportional overflow valve arranged between the two-way reversing valve and the electromagnetic conversion valve.

[0014] As an optional implementation of the present invention, the control valve component further includes an electromagnetic overflow valve disposed on the upper portion of the oil distribution valve block, and the electromagnetic overflow valve is electrically connected to the electronic control unit via a cable.

[0015] As an optional embodiment of the present invention, the distribution valve group also includes an oil return port and a manual pump assembly; the manual pump assembly is located on one side of the oil inlet, and is arranged on the distribution circuit formed by the oil inlet and the oil return port, including: an oil outlet 1 arranged on one side of the oil return port, a manual pump oil inlet arranged on the other side of the oil return port, a manual stop valve arranged on the opposite side of the oil inlet, and an oil outlet 2 and an oil outlet 3 arranged between the oil return port and the manual pump oil inlet; the manual stop valve is arranged on the distribution circuit between the manual pump oil inlet and the oil return port; the manual pump oil inlet is connected to at least one of the oil outlet 1, oil outlet 2 and oil outlet 3 of the manual pump assembly through a pipeline.

[0016] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Based on the above technical solution, the present invention has at least one of the following advantages and effects:

[0017] 1. The hydraulic pump station provided by the present invention comprises: a hydraulic pump station, including an oil tank for storing and dissipating oil, a main pump unit provided in the oil tank, a distribution valve group provided on the outer shell of the oil tank and connected to the main pump control circuit on the main pump unit through a pipeline, an electronic control unit provided on the side wall of the oil tank, and a cooling unit or cooler provided on the side of the oil tank; the main pump unit is connected to the upper cover plate of the oil tank and connected to the distribution valve group through the pipeline of the main pump control circuit; the distribution valve group is installed on a mounting seat provided outside the oil tank; the distribution valve group is respectively connected to each actuator through a pipeline; the electronic control unit is electrically connected to the sensor, the distribution valve group and the main pump unit installed in the oil tank by a cable. The hydraulic pump station of the present invention has a simple structure, adopts an integrated design with small mass and small space occupation, can effectively meet the requirements of noise reduction and vibration reduction, improve the reliability and guarantee of the operation of the hydraulic pump station, reduce the difficulty of maintenance, and improve the safety of continuous operation of the hydraulic pump station.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above-mentioned structure and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1A This is a schematic structural diagram of a hydraulic pump station according to this embodiment.

[0020] Figure 1B This is a schematic structural diagram of a hydraulic pump station according to this embodiment.

[0021] Figure 2 This is a schematic structural diagram of a main pump station unit of this embodiment.

[0022] Figure 3A Schematic diagram of the structure of a flow distribution valve group of this embodiment.

[0023] Figure 3B Schematic diagram of the structure of a flow distribution valve group of this embodiment.

[0024] Figure 4 It is a schematic diagram of the hydraulic structure of the main pump unit of the hydraulic pump station of this embodiment.

[0025] Figure 5 It is a schematic diagram of the hydraulic structure of the oil distribution valve group of the hydraulic pump station of this embodiment.

[0026] Figure 6 It is a schematic diagram of a two-stage vibration isolation structure for double-sided vibration isolation of a hydraulic pump station in this embodiment.

[0027] Description of Figure Numbers:

[0028] 1: Main pump unit 2: Wire rope vibration damper

[0029] 3: Hand pump assembly 4: Oil tank

[0030] 5: Oil return filter group 6: Oil temperature sensor

[0031] 7: Liquid level sensor 8: Flow distribution valve group

[0032] 9: Electronic control unit 10: Liquid level meter

[0033] 11: Vibration sensor 12: Cooler

[0034] 13: Air filter 14: Auxiliary pump unit

[0035] 15: Cooling pump unit 16: Oil immersed motor

[0036] 17: Rubber shock absorber 18: Connector

[0037] 19: High pressure hose 20: Hydraulic pump

[0038] 21: Control oil hose 22: Proportional throttle valve

[0039] 23: High pressure filter 24: Flow meter

[0040] 25: Top plate 26: Hanging rack

[0041] 27: Oil inlet 28: Oil distribution valve block

[0042] 29: Pressure test exhaust joint 30: Two-way reversing valve

[0043] 31: Proportional relief valve 32: Solenoid relief valve

[0044] 33: Solenoid reversing valve 34: Pressure sensor

[0045] 35: Oil outlet 1 36: Manual pump oil inlet

[0046] 37: Oil outlet 2 38: Oil outlet 3

[0047] 39: Oil return port 40: Manual stop valve

[0048] K1: The stiffness of the rubber vibration damper K2: The stiffness of the wire rope vibration damper

[0049] C1: Damping of rubber vibration absorber C2: Damping of wire rope vibration absorber DETAILED DESCRIPTION

[0050] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects proposed according to the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0051] At present, the traditional multiple hydraulic pump stations at the stern of the ship are generally set up independently of each other. Many hydraulic pump stations occupy the installation space of the cabin, and the number of pipelines is large. The numerous hydraulic pump stations and pipelines also increase the overall weight of the ship. Each actuator has its own hydraulic pump station oil source and cannot be shared, resulting in a waste of cabin space resources and failing to meet the ship development requirements for small space occupation and light weight assembly. Secondly, each hydraulic pump station needs to transmit pressure oil to the actuator through the laying of pipelines, which increases the pipeline layout space and construction workload, making equipment installation and maintenance difficult. Too many system components increase the difficulty of equipment assurance, resulting in difficulties in the installation and maintenance of multiple hydraulic pump stations. In addition, the equipment is in poor operating condition. When multiple hydraulic pump stations are in operation, the hydraulic system will generate a lot of noise and vibration during operation. Especially on ships, the noise is reflected through the bulkhead, which can easily cause an increase in the noise level. At the same time, the steel structure of the hull transmits the vibration of the hydraulic pump station system to other cabins, causing serious impact on the operator and easily causing damage to other equipment. The present invention provides a hydraulic pump station, such as Figure 1A and Figure 1BAs shown, the hydraulic pump station includes: an oil tank 4 for storing and dissipating heat oil, a main pump unit 1 provided in the oil tank 4, a distribution valve group 8 provided on the outer shell of the oil tank 4 and connected to the main pump unit 1 through a pipeline, an electronic control unit 9 provided on the side wall of the oil tank 4, and a cooling unit provided on the side of the oil tank 4, which can be a cooler 12. The oil tank 4 is the main structure of the hydraulic pump station, and the oil tank 4 has a plurality of mounting seats for fixing and assembling other components. The weight of the oil tank 4 accounts for nearly half of the total weight of the hydraulic pump station. In order to reduce the weight of the oil tank 4, the oil tank 4 is welded with a steel plate of a titanium alloy profile, and the density of the titanium alloy of the steel plate is about 60% of that of the carbon steel plate. In the present invention, TC4 grade titanium alloy steel plate is used, and the yield strength is not less than 800MPa. The thickness of the oil tank 4 is thinned while reducing the weight. The titanium alloy oil tank 4 not only reduces the weight by about 40% compared with the steel plate material oil tank, but also has a higher safety factor. By comprehensively arranging other components (such as the top plate and the bracket 26 below) in the above-mentioned oil tank 4, the weight and size of the hydraulic pump station of the present invention can be reduced by at least 30% compared with conventional products.

[0052] In the present invention, the main pump unit 1 is connected to the upper cover plate of the oil tank 4, and is connected to the distribution valve group 8 through the pipeline of the main pump control circuit; the distribution valve group 8 is installed on the mounting seat arranged outside the oil tank 4; the distribution valve group 8 is respectively connected to each actuator through pipelines; the electronic control unit 9 is electrically connected to the sensor, the distribution valve group 8 and the main pump unit 1 installed in the oil tank 4 by cables. The top plate 25 of the main pump unit 1 itself is connected to the upper cover plate of the oil tank 4, and is used as a main power source providing component of the hydraulic pump station to provide high-pressure oil to the inside of the hydraulic pump station to ensure the reliability and safety of the hydraulic pump station during operation. In addition to the oil tank 4, the main pump unit 1, the distribution valve group 8, the electronic control unit 9, the sensor and the cooling unit, the hydraulic pump station also includes an auxiliary pump unit 14, and the auxiliary pump unit 14 is provided with a top plate 25, and the top plate 25 of the auxiliary pump unit 14 itself is connected to the upper cover plate of the oil tank 4. The oil outlet of the auxiliary pump unit 14 is connected to the distribution valve group 8 through a pipeline, and is used for the electronic control unit 9 to control the auxiliary pump unit 14 to be in an unactivated standby state when the output power of the main pump unit 1 is adapted, so as to further improve the reliability, safety and normal operation of the hydraulic pump station; when the output power of the main pump unit 1 is insufficient or fails, the electronic control unit 9 controls the auxiliary pump unit 14 to start, and can provide high-pressure oil to the distribution valve group 8 together with the main pump unit 1. The distribution valve group 8 can merge the high-pressure oil output by the main pump unit 1 and the auxiliary pump unit 14 to the distribution valve group 8 for pressure regulation, and distribute oil of different pressures and flows to the actuators of the corresponding equipment according to the power requirements of each external equipment, and adapt and distribute the merged high-pressure oil and output it. The electronic control unit 9 is the core of the electronic control system of the entire hydraulic pump station. It is used to collect and display the signals and data of each sensor, and to output the control signals of each sensor, the distribution valve group 8, the main pump group unit 1 and the auxiliary pump group unit 14 through the cable output, and to control the actions of various electrical components (such as sensor chips, electromagnets and motors) of the hydraulic pump station. The cooling unit includes a cooler 12 and a cooling pump group unit 15. The cooler 12 is installed on the bottom plate in the oil tank 4 and is connected to the cooling pump group unit 15 through a pipeline to cool the high-temperature hydraulic oil in the oil tank 4. The top plate 25 of the cooling pump group unit 15 is connected to the upper cover plate of the oil tank 4 to provide power for the hydraulic oil circulated and cooled by the cooler 12. The auxiliary pump group unit 14 and the cooling pump group unit 15 are basically the same as the main pump group unit in composition and structure, except for the power, function and specifications, which are not repeated here. The sensor includes an oil temperature sensor 6 and a liquid level sensor 7. The oil temperature sensor 6 and the liquid level sensor 7 are mounted on the mounting seat of the upper cover plate of the oil tank 4 and are used to detect the temperature and liquid level of the oil in the oil tank 4 respectively.The hydraulic pump station of the present invention adopts an integrated structural design to reduce the specifications and quantity of components of a traditional independently operated hydraulic pump station (such as the specifications and quantity of pipelines and cables), and realizes the oil supply of multiple users sharing a set of hydraulic pump stations through the integration of multi-device oil supply. The integrated structural design has a simple structure; at the same time, the hydraulic pump station is designed with a lightweight structure on the premise of meeting the functions, and the installation space occupied in the ship cabin is reduced in a compact structural design. At the same time, the weight of the hydraulic pump station is reduced by using suitable titanium steel profile materials, which is lightweight and occupies a small space, thereby increasing the load capacity of the ship; the main pump group unit 1 and the auxiliary pump group unit 14 are arranged by hoisting the top plate 25, so that the transmission path of the pump group vibration is extended, and the space for installing and fixing components of the upper cover plate, side wall and base of the oil tank 4 is increased, while the vibration transmission rate is greatly reduced, achieving the effect of shock absorption and noise reduction; the reliability, safety and guarantee of the operation of the hydraulic pump station are further improved through the combination of the electronic control unit and the oil distribution valve group.

[0053] In an optional embodiment of the present invention, Figure 1A and Figure 1B As shown, the hydraulic pump station also includes a return oil filter group, and the return oil filter group 5 is arranged on the main pump control circuit of the main pump group unit 1. For example, the return oil filter group 5 can be connected to the actuator return oil pipeline. It can also be installed on the flange of the upper cover plate of the oil tank 4 to filter the low-pressure oil returned from each actuator, and installed on the flange of the upper cover plate of the oil tank 4 to further reduce the oil pressure of the low-pressure oil return and increase the speed of the low-pressure oil return.

[0054] In an optional embodiment of the present invention, the hydraulic pump station may further include a liquid level meter 10 and an air filter 13. The liquid level meter 10 may be installed on the inner and outer side walls of the oil tank 4, and is used to measure the height of the oil level in the oil tank 4 by naked eye observation on the outer side wall of the oil tank 4. The air filter 13 is installed on the mounting seat of the upper cover plate of the oil tank 4, and is used to filter the air inside and outside the oil tank 4.

[0055] In an optional embodiment of the present invention, the hydraulic pump station may include two main pump units 1, and the two main pump units 1 may be arranged in series or in parallel on the main pump control circuit through pipelines (not shown in the figure).

[0056] In an optional embodiment of the present invention, Figure 1A , Figure 1B and Figure 2As shown, the main pump unit 1 includes an oil-immersed motor 16, a hydraulic pump 20, a throttle valve 22 and a flow meter 24 connected in sequence on the main pump control circuit; the oil-immersed motor 16 and the hydraulic pump 20 are rotatably connected through a connector 18; the hydraulic pump 20 and the throttle valve 22 are connected through a pipeline; the throttle valve 22 and the flow meter 24 are arranged on the top plate 25 of the main pump unit 1. The motor pump group of the conventional hydraulic system generally uses a low-voltage motor and adopts a squirrel cage structure for setting. In addition to the stator and rotor of the motor, it also includes a housing, front and rear end covers and a junction box. In order to protect personnel and the above-mentioned internal components of the motor, the housing, front and rear end covers and the junction box are generally relatively thick, and the low-voltage motor itself often has a large size and weight. At the same time, the motor arranged in the traditional squirrel cage structure usually uses a fan blade installed on the tail of the motor shaft to cool the motor itself, and the fan blade often generates a large noise and vibration during operation. The motor pump group of the above-mentioned conventional hydraulic system has obvious problems in terms of weight and space occupied. The main pump group unit 1 of the present invention uses an oil-immersed motor 16 equipped with a load-sensitive pump to control the flow rate of the output liquid oil. Compared with the conventional motor pump group, the structural setting of the main pump group unit 1 omits the motor accessories such as the housing, fan, front and rear end covers of the traditional motor, so that the structure between the oil-immersed motor 16 and the load-sensitive pump can be more compact. The weight of a traditional 55kw ordinary motor level 4 is generally about 400kg, and its length can reach 900mm, while the weight of the oil-immersed motor of the present invention is about 100kg, and its length is about 600mm. The oil-immersed motor of the present invention is not only more compact and occupies less space, but its weight is generally less than 33% of the ordinary motor pump group of the same specification. The connection between the oil-immersed motor 16 and the load-sensitive pump of the present invention does not require a bell cover and a coupling (see Figure 2 ), a connector 18 is designed according to the flange end faces of the traditional ordinary motor and pump group, and the connector 18 replaces the general bell cover and coupling, so that the volume size of the hydraulic pump station is further reduced, and the load-sensitive pump is connected by improving the compact connector 18. On the one hand, the extra weight of the bell cover and the coupling is saved; on the other hand, the structure is compact, the space occupied is smaller, and the structure is compact and easy to arrange. The oil-immersed motor 16 itself is cooled by using the low-temperature oil of the return oil, so that the ability of the oil-immersed motor to withstand high temperature environments is greatly improved. The oil-immersed motor 16 of the present invention can withstand high temperatures up to 100°C. The normal temperature of the oil in the oil tank will not exceed 55°C. When immersed in the oil at this temperature, the oil-immersed motor 16 has a temperature difference of 45°C, which can be used to fully exchange the generated heat, and can meet the temperature requirements of the oil-immersed motor 16 when used in the oil; at the same time, the oil-immersed motor 16 is immersed in the oil, which can also reduce the noise and vibration caused by the rotation of the fan blades.

[0057] In the present invention, the oil-immersed motor 16 is connected to the hydraulic pump 20 through the connector 18. The hydraulic pump 20 adopts a load-sensitive pump, so that the hydraulic pump 20 can automatically adjust the flow and pressure output according to the load demand, and provide the flow and pressure required to be automatically adapted to the distribution valve group 8. When the load-sensitive pump is arranged on several valve ports on the distribution valve group 8, it can act on several valve ports on the distribution valve group 8 at the same time, and the flow is not affected by the load. The position range of each actuator allocated by the distribution valve group 8 can be accurately controlled, ensuring that each actuator is allocated to the required precise flow and pressure at its respective position, ensuring that the main pump group unit 1 and / or the auxiliary pump group unit 14 in the hydraulic pump station can operate at the minimum power, ensuring that the hydraulic pump station operates in a low-energy form, and reducing the energy waste of the hydraulic pump station operation. The oil outlet and control port of the hydraulic pump are connected to the valve block on the top plate 25 through pipelines, wherein the oil outlet of the hydraulic pump is connected to the valve block on the top plate 25 corresponding to itself through the high-pressure hose 19, and the control port of the hydraulic pump is connected to the valve block on the top plate 25 corresponding to itself through the control oil hose 21. The throttle valve 22 can be a proportional throttle valve, which is installed on the valve block on the top plate 25, and is used to control the flow rate and pressure difference of the oil in the hydraulic pump 20, thereby controlling the displacement of the hydraulic pump, so as to achieve the purpose of adjustable flow rate to achieve the control function of a specific actuator. For example, the proportional throttle valve can control the flow rate and pressure of the pump fluid according to the preset control signal and the feedback signal of the hydraulic pump 20, so that the hydraulic pump 20 can achieve the corresponding execution action or execution effect. The proportional throttle valve can also control the oil flow rate input and output in the hydraulic pump 20 through adjustment, and at the same time ensure that the hydraulic pump 20 can achieve more accurate rotation speed and automatic position precision control in a stable state, and further make the action speed and execution position of each actuator allocated by the distribution valve group be accurately controlled. The proportional throttle valve can also control the output force and load of the hydraulic pump station through the hydraulic pump 20, so that the hydraulic pump station can save more energy when working, thereby improving the execution efficiency and execution reliability of the hydraulic pump station. The flow meter 24 is arranged on the upper surface of the top plate 25, and is used to detect the actual flow output by the proportional throttle valve 22.

[0058] In an optional embodiment of the present invention, Figure 2 As shown, the main pump unit 1 further includes a high-pressure filter 23 , which is mounted on the valve block and is used to filter the high-pressure oil at the oil outlet of the hydraulic pump 20 .

[0059] In an optional embodiment of the present invention, Figure 2As shown, a bracket 26 is provided between the oil-immersed motor 16 and the top plate 25, and the bracket 26 and the oil-immersed motor 16 are connected by a first elastic shock absorber. The top plate 25 and the bracket 26 are welded as one, the upper part of the top plate 25 is connected and fixed to the oil tank 4 by bolts, and the lower part of the top plate 25 is connected to the main pump unit 1 by the first elastic shock absorber. The oil-immersed motor 16 and the hydraulic pump 20 are all immersed in the hydraulic oil of the oil tank 4 in the form of oil immersion. The noise generated by the oil-immersed motor 16 and the hydraulic pump 20 during operation needs to pass through the hydraulic oil and the oil tank 4 and then further diffuse outward. In the path of noise transmission, the hydraulic oil and the shell wall of the oil tank 4 can greatly attenuate the transmitted noise, thereby reducing the level of diffused noise. The noise and vibration of the motor and hydraulic pump of the conventional hydraulic pump station are more significant during operation. The noise diffuses to the surroundings through the air, and the vibration is directly transmitted to the hull deck through the base of the hydraulic pump station and propagates along the deck. The test results show that for a hydraulic pump station with the same power, the noise of the oil-immersed motor 16 and the hydraulic pump 20 of the present invention is 20-30 dB lower than that of a conventional hydraulic pump station.

[0060] In the present invention, the main pump unit is composed of an oil-immersed motor, a first elastic shock absorber, a connector, a high-pressure hose, a hydraulic pump, a control oil hose, a proportional throttle valve, a high-pressure filter, a flow meter, a top plate and a hanger. The oil-immersed motor is connected to the hydraulic pump through a connector, and the hydraulic pump adopts a load-sensitive pump. The high-pressure hose and the control oil hose respectively connect the oil outlet and the control port of the hydraulic pump to the valve block on the top plate. The proportional throttle valve is installed on the valve block to control the pressure difference between the inlet and outlet oil, and then control the displacement of the hydraulic pump to achieve the purpose of adjustable flow. The high-pressure filter 23 is installed on the valve block to filter the high-pressure oil at the pump outlet. The flow meter 24 is used to detect the actual output flow. The top plate and the hanger are welded as one, the upper top plate is installed and connected to the oil tank, and the lower hanger is connected to the oil-immersed motor through the first elastic shock absorber. The first elastic shock absorber can isolate a part of the vibration of the oil-immersed motor and the hydraulic pump during operation.

[0061] As a preferred embodiment, the first elastic vibration damper is a rubber vibration damper 17. The rubber vibration damper 17 is easy to shape and is tightly combined with the metal shell surface of the oil-immersed motor 16. By adopting a preset sheet-shaped triangular, rectangular, circular, or other polygonal rubber vibration damper 17, the stiffness and strength requirements of the oil-immersed motor 16 in different directions between the spacing and the bracket 26 can be met. The internal damping of the rubber vibration damper 17 is large, and the effective frequency range of vibration reduction is large. It can adapt to multiple vibration directions (such as axial, lateral, longitudinal and rotation) of the high-frequency oil-immersed motor 16. In addition to vibration reduction, it also has a good sound insulation effect. In addition, the rubber vibration damper 17 has strong temperature adaptability, especially when used in high-temperature oil with an operating temperature range of 0°C to 70°C. It is light in weight, small in size, low in price, small in wear, easy to install, long in service life and easy to replace. The rubber vibration damper 17 is used to isolate the vibration of a part of the oil-immersed motor 16 and the hydraulic pump 20 during operation. It is easy to use and has a significant vibration isolation effect. The setting of the bracket 26 allows the oil-immersed motor 16 to be suspended in the oil tank 4, thereby extending the path of vibration transmission of the motor and hydraulic pump structure during operation, increasing the area of ​​the upper cover plate, side wall and base of the oil tank 4 for installing and fixing other components, and greatly reducing the vibration transmission rate.

[0062] In an optional embodiment of the present invention, the hydraulic pump station also includes a second elastic shock absorber, which is arranged at the bottom outside the oil tank 4, and the second elastic shock absorber and the first elastic shock absorber are adapted to form a two-stage vibration isolation structure. The second elastic shock absorber is not limited to elastic plate-shaped springs and spiral wire rope shock absorbers 2. The elastic plate-shaped springs or wire rope shock absorbers 2 can be directly and evenly arranged on the bottom area outside the oil tank 4. As a preferred embodiment, the wire rope shock absorber 2 can be sleeved on a wire rope fixed around the bottom of the outside of the oil tank 4. In addition, the middle part of the bottom of the outside of the oil tank 4 can also use a uniformly distributed and fixed wire rope, and a number of wire rope shock absorbers 2 are evenly sleeved on the wire rope to isolate the vibration of the main pump unit 1 and the oil tank 4 when the hydraulic pump station is running. Conventional hydraulic pump stations generally cannot effectively eliminate and isolate low-frequency vibrations in the motor pump group. The hydraulic pump station of the present invention adopts a two-stage vibration isolation structure. The first-stage vibration isolation structure is that the motor pump unit in the main pump unit and the auxiliary pump unit uses a vibration absorber (such as a rubber vibration absorber 17) for vibration isolation. The second-stage vibration isolation structure is that the wire rope vibration absorber 2 installed at the bottom of the oil tank 3 is used for overall vibration isolation. The first-stage vibration isolation structure and the second-stage vibration isolation structure are adapted in quantity and arrangement (such as the number is generally an even number, and they are evenly arranged and symmetrically arranged) to form a two-stage vibration isolation structure. Figure 6As shown, M1 represents the weight of the oil-immersed motor 16 and the hydraulic pump 20 as the first-level vibration isolation structure, the stiffness k1 of the rubber vibration absorber of the first-level vibration isolation structure, and the damping C1 of the rubber vibration absorber are the inherent attribute parameters adapted for the first-level vibration isolation structure. M2 represents the weight of all remaining components of the hydraulic pump station except M1, the stiffness k2 of the wire rope vibration absorber of the second-level vibration isolation structure, and the damping C2 of the wire rope vibration absorber are the inherent attribute parameters adapted for the second-level vibration isolation structure. When the oil-immersed motor 16 and the hydraulic pump 20 are running, vibration occurs, and the inertial force of M2 can balance a part of the excitation force of M1, thereby reducing the inertial force transmission rate between the hydraulic pump station as a whole and the hull deck, so that the two-stage vibration isolation structure can achieve the effect of isolating low-frequency vibration.

[0063] As a preferred embodiment, a vibration sensor 11 for detecting abnormal vibration of the hydraulic pump station is also provided on the bottom plate of the oil tank 4. The vibration sensor 11 can be provided on the inner wall of the bottom plate of the oil tank 4 to detect the vibration condition of the entire oil tank 4 and send it to the electronic control unit 9. The electronic control unit 9 controls and adjusts the operation of the main pump unit and the auxiliary pump unit based on the vibration condition detected by the vibration sensor 11. For example, when the vibration sensor 11 detects high-frequency vibration, the operation speed of the main pump unit 1 and the auxiliary pump unit 14 can be controlled and adjusted by the electronic control unit 9 to reduce the vibration frequency of the main pump unit 1 and the auxiliary pump unit 14. The above-mentioned shock-absorbing structure design makes the operating hydraulic pump station as a whole meet the low-noise vibration isolation requirements. Generally, the structure of the oil-immersed motor 16 is thinner than that of a conventional motor. In order to adapt to the bumpy environment of the ship, the hydraulic pump station of the present invention forms a two-stage vibration isolation structure by adapting the second elastic shock absorber to the first elastic shock absorber, thereby reducing the influence of the inertial force generated by the movement of the hull on the structural strength of the load-sensitive pump.

[0064] In an optional embodiment of the present invention, Figure 3A and Figure 3B As shown, the distribution valve group 8 includes an oil distribution valve block 28, a pressure measuring and exhaust joint 29 and a distribution valve group sensor arranged beside the oil distribution valve block 28, and a control valve member and an oil inlet 27 arranged on the upper part of the oil distribution valve block 28; the oil inlet 27 is connected to the main pump group unit through a pipeline; and the control valve member is electrically connected to the electronic control unit 9 through cables. The hydraulic components of the distribution valve group 8 are fixedly mounted on the oil distribution valve block 28 by bolts, and the distribution valve group 8 is provided with an oil inlet 27, and the oil inlet 27 is used to connect the main pump group unit 1 through a pipeline. The pressure measuring and exhaust joint 29 can be arranged on the oil distribution valve block 28 in a connected or disconnected manner, and is used to measure the oil pressure in the oil distribution valve block 28 by connecting the connected pressure gauge during maintenance. The distribution valve group sensor adopts a pressure sensor 34, which is used to detect the pressure of the oil output by the distribution valve group 8.

[0065] In an optional embodiment of the present invention, Figure 3A and Figure 3B As shown, the control valve components include: a two-way reversing valve 30 adjacent to the pressure measuring and exhaust joint 29, an electromagnetic conversion valve 33 arranged on the sensor side of the distribution valve group, and a proportional relief valve 31 arranged between the two-way reversing valve 30 and the electromagnetic conversion valve 33. The two-way reversing valve 30 and the electromagnetic reversing valve 33 are respectively arranged on the oil outlet 27, and the oil outlet 27 is connected to different actuators. The oil outlet 27 is used to provide high-pressure oil for different actuators. The two-way reversing valve 30 and the electromagnetic reversing valve 33 are used to control the connection and disconnection of each oil outlet on the distribution valve block 28. The proportional relief valve 31 is used to adjust the different hydraulic pressures of the distribution valve group 8 and the hydraulic pump station to adapt to the hydraulic requirements of different actuators corresponding to the output of the hydraulic pump station.

[0066] In an optional embodiment of the present invention, Figure 3A and Figure 3B As shown, the control valve component also includes an electromagnetic overflow valve 32 arranged on the upper part of the oil distribution valve block 28. The electromagnetic overflow valve 32 is electrically connected to the electronic control unit 9 through a cable. The electronic control unit 9 adjusts the adaptation and distribution of the hydraulic oil in the oil distribution valve block 28 by controlling the electromagnetic overflow valve 32.

[0067] In an optional embodiment of the present invention, Figure 3A and Figure 3B As shown, the flow distribution valve group 8 also includes an oil return port 39 and a manual pump assembly; the manual pump assembly is located on one side of the oil inlet 27 and is arranged on the flow distribution circuit formed by the oil inlet 27 and the oil return port 39. The manual pump assembly includes: an oil outlet 1 35 arranged on one side of the oil return port 39, a manual pump oil inlet 36 arranged on the other side of the oil return port 39, a manual stop valve 40 arranged on the opposite side of the oil inlet 27, and an oil outlet 2 37 and an oil outlet 38 arranged between the oil return port 39 and the manual pump oil inlet 36; the manual stop valve 40 is arranged on the flow distribution circuit between the manual pump oil inlet 36 and the oil return port 39; the manual pump oil inlet 36 is connected to at least one of the oil outlet 1 35, the oil outlet 2 37, and the oil outlet 3 38 of the manual pump assembly through a pipeline. The manual pump oil inlet 36 is connected to at least one of the oil outlet 1 35, oil outlet 2 37, and oil outlet 3 38 of the manual pump assembly through a pipeline, and at least one of the oil outlet 1 35, oil outlet 2 37, and oil outlet 3 38 is connected to the corresponding valve group interface of the distribution valve group 8 and the auxiliary pump group unit 14 through a pipeline. The manual stop valve 40 is arranged opposite to the oil inlet 27 and is located on the side wall of the oil tank 4 next to the oil return port 39. When the proportional relief valve fails, the faulty proportional relief valve 31 is isolated by closing the manual stop valve 40, and the hydraulic pump station can still work normally using the electromagnetic relief valve 32.

[0068] As a preferred embodiment of the present invention, the electromagnetic overflow valve 32 can be a spare component. When the proportional overflow valve 31 fails, the faulty proportional overflow valve 31 is isolated by closing the manual stop valve 40, and the hydraulic pump station using the electromagnetic overflow valve 32 still adopts a normal working state.

[0069] In an optional embodiment of the present invention, Figure 4 As shown, the main pump unit 1 and the auxiliary pump unit 14 are both pump units with stepless flow regulation and have stepless flow regulation function. The speed of the oil-immersed motor 16 is a preset speed, so a load-sensitive pump is used as a hydraulic pump 20 to be rotatably connected to the oil-immersed motor 16 and a proportional throttle valve 22 is set on the outlet oil line of the load-sensitive pump. The opening size of the proportional throttle valve 22 is controlled by the electronic control unit 9, so that the pressure of the proportional throttle valve 22 before and after the oil-immersed motor 16 is opened and closed can have a pressure difference, and then the oil outlet pressure of the proportional throttle valve 22 is guided to the hydraulic adjustment mechanism in the load-sensitive pump through the control oil hose 21, so that the hydraulic displacement of the load-sensitive pump changes accordingly. A flow meter 24 is provided on the oil line of the oil outlet of the load-sensitive pump. The flow meter 24 can be replaced by a flow sensor. While guiding the oil outlet pressure of the proportional throttle valve 22 to the hydraulic adjustment mechanism in the load-sensitive pump, the flow information of the load-sensitive pump can be collected in real time through the flow sensor for closed-loop control of the controller PID, so that the control accuracy of the load-sensitive pump flow is higher and the requirements of various actuators of the adapted load are met.

[0070] In an optional embodiment of the present invention, Figure 5 As shown, the distribution valve group 8 merges and integrates the high-pressure oil of the two main pump group units 1. When the hydraulic pump station and the distribution valve group 8 are operating normally, the manual stop valve 40 is in an open state, and the proportional relief valve 31 can adjust the adaptive oil pressure of the hydraulic pump station and the distribution valve group 8 in real time based on the electronic control unit 9 according to the different working conditions of the hydraulic pump station and the distribution valve group 8. When the proportional relief valve 31 fails, the manual stop valve 40 can be closed manually by the manual pump assembly to isolate the faulty proportional relief valve 31. The electromagnetic relief valve 32 set in parallel with the proportional relief valve 31 and used as a spare determines the current maximum hydraulic pressure to improve the accuracy and reliability of oil pressure adjustment. The two-way reversing valve 30 and the electromagnetic reversing valve 31 are used to open and close the high-pressure oil circuit. When any one or more oil circuits of the oil outlet 1 35, the oil outlet 2 37 and the oil outlet 3 38 on the distribution valve group 8 need to supply oil, the corresponding valve port is controlled by the electronic control unit 9 to be in a corresponding open state. At this time, the pressure sensor 34 can perform closed-loop control of the oil pressure with the proportional relief valve 31 .

[0071] The above are only preferred embodiments of the present application, and are not intended to limit the present application in any form. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A hydraulic pump station, characterized in that: include: An oil tank (4) for storing and dissipating heat oil, a main pump unit (1) provided in the oil tank (4), a flow distribution valve group (8) provided on the outer shell of the oil tank (4) and connected to the main pump unit (1) through a pipeline, an electronic control unit (9) provided on the side wall of the oil tank (4), and a cooler (12) provided on the side of the oil tank (4); The main pump unit (1) is connected to the upper cover plate of the oil tank (4) and is connected to the flow distribution valve group (8) through a pipeline; The flow distribution valve group (8) is mounted on a mounting seat arranged outside the oil tank (4); The flow distribution valve group (8) is connected to each actuator through pipelines; The electric control unit (9) is electrically connected to the sensor installed in the oil tank (4), the distribution valve group (8) and the main pump group unit (1) respectively by cables.

2. The hydraulic pump station according to claim 1, characterized in that: It also includes an auxiliary pump unit (14), which is connected to the distribution valve group (8) via a pipeline, and the top plate (25) of the auxiliary pump unit (14) is connected to the upper cover plate of the oil tank (4).

3. The hydraulic pump station according to claim 1, characterized in that: It also includes an oil return filter group (5), which is connected to the oil return pipeline of the actuator.

4. The hydraulic pump station according to claim 1, characterized in that: The main pump assembly unit (1) comprises an oil-immersed motor (16), a hydraulic pump (20), a throttle valve (22) and a flow meter (24) which are sequentially connected on a main pump control circuit; The oil-immersed motor (16) and the hydraulic pump (20) are connected via a connecting piece (18); The hydraulic pump (20) and the throttle valve (22) are connected via a pipeline; The throttle valve (22) and the flow meter (24) are arranged on the top plate (25) of the main pump group unit (1).

5. The hydraulic pump station according to claim 4, characterized in that: A hanging bracket (26) is provided between the oil-immersed motor (16) and the top plate (25), and the hanging bracket (26) and the oil-immersed motor (16) are connected via a first elastic vibration damper.

6. The hydraulic pump station according to claim 5, characterized in that: The hydraulic pump station also includes a second elastic shock absorber, which is arranged at the bottom outside the oil tank (4), and the second elastic shock absorber and the first elastic shock absorber are adapted to form a two-stage vibration isolation structure.

7. The hydraulic pump station according to claim 1, characterized in that: The distribution valve group (8) comprises an oil distribution valve block (28), a pressure measuring and exhaust joint (29) and a distribution valve group sensor arranged beside the oil distribution valve block (28), and a control valve member and an oil inlet (27) arranged on the upper part of the oil distribution valve block (28); The oil inlet (27) is connected to the main pump unit through a pipeline; The control valve components are electrically connected to the electronic control units (9) via cables.

8. The hydraulic pump station according to claim 7, characterized in that: The control valve component comprises: a two-way reversing valve (30) adjacent to the pressure measuring and exhaust joint (29), an electromagnetic conversion valve (33) arranged on the sensor side of the distribution valve group, and a proportional overflow valve (31) arranged between the two-way reversing valve (30) and the electromagnetic conversion valve (33).

9. The hydraulic pump station according to claim 7, characterized in that: The control valve component also includes an electromagnetic overflow valve (32) arranged on the upper part of the oil distribution valve block (28). The electromagnetic overflow valve (32) is electrically connected to the electronic control unit (9) via a cable.

10. The hydraulic pump station according to claim 7, characterized in that: The flow distribution valve assembly (8) also includes an oil return port (39) and a manual pump assembly; The manual pump assembly is located on one side of the oil inlet (27), and is arranged on a flow distribution circuit formed by the oil inlet (27) and the oil return port (39), and comprises: An oil outlet port 1 (35) provided on one side of the oil return port (39), an oil inlet port (36) of a manual pump provided on the other side of the oil return port (39), a manual stop valve (40) provided on the opposite side of the oil inlet port (27), and an oil outlet port 2 (37) and an oil outlet port 3 (38) provided between the oil return port (39) and the oil inlet port (36) of the manual pump; The manual stop valve (40) is arranged on the flow distribution circuit between the oil inlet (36) and the oil return port (39) of the manual pump; The manual pump oil inlet (36) is connected to at least one of the oil outlet 1 (35), the oil outlet 2 (37) and the oil outlet 3 (38) of the manual pump assembly through a pipeline.

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