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; the oil immersed motor variable pump set 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 expenditure, low in noise and vibration, and capable of improving operation reliability and guarantee.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of hydraulic system, in particular, relate to a kind of hydraulic pump station. BACKGROUND

[0002] At present, the tail of ship is generally arranged with multiple hydraulic equipments, and each equipment is independent in function. Each hydraulic equipment is mainly composed of a hydraulic pump station, an electric control system and an actuator, wherein each hydraulic pump station independently provides power for the corresponding hydraulic equipment, the electric control system realizes the operation control and state monitoring of the hydraulic equipment, and the actuators are distributed at different positions on the ship, and the hydraulic cylinders or motors drive the actuators to realize the actions of the hydraulic equipments. Each pump station reaches each actuator through laying its own pipeline, and reaches each electric control unit through laying cable. The above-mentioned multiple hydraulic equipments have their own hydraulic oil sources, cannot be shared, and the laying of the pipelines of each pump station results in multiple oil sources, large weight of installed equipment and large occupation of cabin space of the ship. Among them, the hydraulic equipments are in idle state without starting operation, which leads to large power of installed equipment and cannot meet the development requirements of small space occupation and light weight of the ship. Due to the large number of hydraulic equipments and complex space pipeline distribution, the installation and maintenance are difficult. When multiple hydraulic equipments operate, noise reflection causes the increase of noise level and the strengthening of vibration, which affects the crew on the ship and also easily leads to the damage of other equipments on the ship, affecting the safe operation of the hydraulic equipments.

[0003] Therefore, it is necessary to provide an integrated hydraulic pump station with simple structure, light weight, small space occupation, low noise, multiple users, reduced specifications, number and structure of components, reduced noise and vibration during operation, improved reliability of the hydraulic pump station and protection. SUMMARY

[0004] The utility model provides a kind of hydraulic pump station, to solve the problem of large quality and space occupation of traditional multiple hydraulic equipments, serious noise and vibration, and the reliability of hydraulic pump station operation is difficult to guarantee.

[0005] The utility model discloses a kind of hydraulic pump station, to solve the problem of large quality and space occupation of traditional multiple hydraulic equipments, serious noise and vibration, and the reliability of hydraulic pump station operation is difficult to guarantee.

[0006] The utility model provides a kind of hydraulic pump station, the hydraulic pump station includes: the oil tank of storage and heat dissipation oil liquid, the main pump group unit being equipped in oil tank, the flow distribution valve group being equipped on the shell of oil tank and being connected with main pump group unit by pipeline, the electric control unit being equipped in the side wall of oil tank, and the cooler being equipped in the side of oil tank;Main pump group unit is connected on the upper cover plate of oil tank, and is connected with flow distribution valve group by pipeline;Flow distribution valve group is installed on the mounting seat arranged outside oil tank;Flow distribution valve group is connected with each actuator by pipeline respectively;Electric control unit is electrically connected with the sensor of mounting oil tank, flow distribution valve group and main pump group unit by cable respectively.

[0007] As an optional embodiment of the utility model, the hydraulic pump station further comprises an auxiliary pump group unit, the auxiliary pump group unit is connected with the pipeline and the flow distribution valve group, and the top plate of the auxiliary pump group unit is connected with the upper cover plate of the oil tank.

[0008] As an optional embodiment of the utility model, the hydraulic pump station further comprises an oil return filter group, and the oil return filter group is connected with the execution mechanism oil return pipeline connection circuit.

[0009] As an optional embodiment of the utility model, the main pump group unit comprises an oil immersion motor, a hydraulic pump, a throttle valve and a flowmeter connected in sequence on the main pump control circuit; the oil immersion motor and the hydraulic pump are connected through a connecting piece; the hydraulic pump and the throttle valve are connected through a pipeline; and the throttle valve and the flowmeter are arranged on the top plate of the main pump group unit.

[0010] As an optional embodiment of the utility model, a hanger is arranged between the oil immersion motor and the top plate, and the hanger and the oil immersion motor are connected through a first elastic damper.

[0011] As an optional embodiment of the utility model, the hydraulic pump station further comprises a second elastic damper, the second elastic damper is arranged at the bottom outside the oil tank, and the second elastic damper and the first elastic damper are matched to form a two-stage vibration isolation structure.

[0012] As an optional embodiment of the utility model, the flow distribution valve group comprises an oil distribution valve block, a pressure measuring exhaust joint and a flow distribution valve group sensor arranged on the side of the oil distribution valve block, and a control valve and an oil inlet arranged on the upper part of the oil distribution valve block; the oil inlet is connected with the main pump group unit through a pipeline; and the control valve is electrically connected with the electronic control unit through a cable.

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

[0014] As an optional embodiment of the utility model, the control valve further comprises an electromagnetic overflow valve arranged on the upper part of the oil distribution valve block, and the electromagnetic overflow valve is electrically connected with the electronic control unit through a cable.

[0015] As an optional embodiment of the utility model, the flow distribution valve group further comprises an oil return port and a manual pump assembly; the manual pump assembly is located on one side of the oil inlet port and is arranged on the flow distribution circuit formed by the oil inlet port and the oil return port, and comprises: an oil outlet port one arranged on one side of the oil return port, a manual pump oil inlet port arranged on the other side of the oil return port, a manual stop valve arranged on the opposite side of the oil inlet port, and an oil outlet port two and an oil outlet port three arranged between the oil return port and the manual pump oil inlet port; the manual stop valve is arranged on the flow distribution circuit between the manual pump oil inlet port and the oil return port; the manual pump oil inlet port is connected with at least one of the oil outlet port one, the oil outlet port two and the oil outlet port three of the manual pump assembly through a pipeline.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects, and based on the above technical scheme, the utility model has at least one of the following advantages and effects:

[0017] One, the utility model provides a hydraulic pump station, the hydraulic pump station includes: hydraulic pump station, including the oil tank of storage and heat dissipation oil liquid, the main pump group unit that is equipped in the oil tank, the flow distribution valve group that is equipped on the oil tank shell and is connected with main pump control circuit on the main pump group unit through the pipeline, the electric control unit that is equipped in the oil tank lateral wall, and the cooling unit or cooler that is equipped in the oil tank side part, the main pump group unit is connected on the upper cover plate of the oil tank, is connected with the flow distribution valve group through the pipeline of main pump control circuit, the flow distribution valve group is installed on the mounting seat that is arranged outside the oil tank, the flow distribution valve group is connected with each actuating mechanism through the pipeline respectively, the electric control unit is electrically connected with the sensor of installation in the oil tank, the flow distribution valve group and the main pump group unit by cable respectively, the hydraulic pump station of the utility model simple structure, adopts integrated design quality is smaller and occupies small, can effectively reach the requirement of noise reduction and damping, improves the reliability and guarantee of hydraulic pump station operation, reduces the difficulty of maintenance, improves the safety of the continuous operation of the hydraulic pump station.

[0018] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, which can be implemented according to the content of the specification, and in order to let the above structure and other purposes, characteristics and advantages of the utility model can be more obvious and easy to understand, the following preferred embodiments are described in detail, and the accompanying drawings are as follows. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1A It is a structure schematic view of a hydraulic pump station of the embodiment.

[0020] Figure 1B It is a structure schematic view of a hydraulic pump station of the embodiment.

[0021] Figure 2 It is a structure schematic view of a main pump station unit of the embodiment.

[0022] Figure 3AA structure schematic diagram of a flow distribution valve group of the embodiment.

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

[0024] Figure 4 A schematic diagram of the main pump group unit hydraulic structure of the hydraulic pump station of the embodiment.

[0025] Figure 5 A schematic diagram of the oil distribution valve group hydraulic structure of the hydraulic pump station of the embodiment.

[0026] Figure 6 A schematic diagram of the two-stage vibration isolation structure of the double-side vibration isolation of the hydraulic pump station of the embodiment.

[0027] BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 1: main pump group unit 2: steel wire rope 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: electric control unit 10: liquid level gauge

[0033] 11: vibration sensor 12: cooler

[0034] 13: air filter 14: auxiliary pump group unit

[0035] 15: cooling pump group unit 16: oil-immersed motor

[0036] 17: rubber damper 18: connecting piece

[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: hanger

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

[0042] 29: pressure measuring exhaust joint 30: two-way reversing valve

[0043] 31: proportional overflow valve 32: electromagnetic overflow valve

[0044] 33: electromagnetic directional valve 34: pressure sensor

[0045] 35: first oil outlet 36: manual pump oil inlet

[0046] 37: second oil outlet 38: third oil outlet

[0047] 39: oil return port 40: manual stop valve

[0048] K1: stiffness of rubber damper K2: stiffness of steel wire rope damper

[0049] C1: damping of rubber damper C2: damping of steel wire rope damper DETAILED DESCRIPTION

[0050] In order to further illustrate the technical means and effects taken by the utility model to achieve the predetermined utility model purposes and effects, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0051] At present, the traditional multiple hydraulic pump stations of the ship stern are generally independently arranged, and the multiple hydraulic pump stations occupy the installation space of the cabin, the number of pipelines is large, and the multiple 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, which causes waste of cabin space resources and does not meet the assembly requirements of small space occupation and light weight for ship development. Secondly, each hydraulic pump station needs to transmit pressure oil through laying pipelines to the actuator, which increases the pipeline laying space and construction workload, causes difficulties in equipment installation and maintenance, too many system components, increases the difficulty of equipment support, and leads to difficulties in installation and maintenance of multiple hydraulic pump stations. In addition, the equipment operating state is poor, when multiple hydraulic pump stations are running, the hydraulic system will generate a large amount of noise and vibration during operation. Especially on the ship, the noise is reflected through the bulkhead, which is easy to cause the increase of noise level. At the same time, the vibration of the hydraulic pump station system is transmitted to other cabins through the steel structure of the ship body, which causes serious influence on the operators and is easy to cause damage to other equipment. The utility model provides a kind of hydraulic pump station, such as Figure 1A and Figure 1BAs shown, the hydraulic pump station comprises an oil tank 4 for storing and radiating oil, a main pump group unit 1 arranged in the oil tank 4, a flow distribution valve group 8 arranged on the shell of the oil tank 4 and connected with the main pump group unit 1 through pipelines, an electric control unit 9 arranged on the side wall of the oil tank 4, and a cooling unit arranged 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 is provided with 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 by using a titanium alloy profile steel plate, and the density of the titanium alloy steel plate is about 60% of that of a carbon steel plate. In the utility model, a titanium alloy steel plate with a TC4 brand is used, and the yield strength is not less than 800MPa, so that the thickness of the oil tank is reduced while the weight is reduced. The oil tank 4 made of titanium alloy not only reduces the weight by about 40% compared with the oil tank made of steel plate, but also has a higher safety factor. By comprehensively arranging other components (such as a top plate and a hanger 26 described below) on the oil tank 4, the weight and size of the hydraulic pump station of the utility model can be reduced by at least more than 30% compared with conventional products.

[0052] In the utility model, main pump group unit 1 is connected on the upper cover plate of oil tank 4, and is connected with flow distribution valve group 8 through the pipeline of main pump control circuit; flow distribution valve group 8 is installed on the mounting seat arranged outside oil tank 4; flow distribution valve group 8 is connected with each actuating mechanism through the pipeline respectively; electric control unit 9 is electrically connected with the sensor of mounting oil tank 4, flow distribution valve group 8 and main pump group unit 1 through cable respectively. The top plate 25 of main pump group unit 1 is connected with the upper cover plate of oil tank 4, and it is used as the main power supply component of hydraulic pump station to provide high pressure oil for the inside of hydraulic pump station and guarantee the reliability and safety of hydraulic pump station during operation. In addition to including oil tank 4, main pump group unit 1, flow distribution valve group 8, electric control unit 9, sensor and cooling unit, hydraulic pump station also includes auxiliary pump group unit 14, and the top plate 25 is arranged on auxiliary pump group unit 14, and the top plate 25 of auxiliary pump group unit 14 is connected with the upper cover plate of oil tank 4. The oil outlet of auxiliary pump group unit 14 is connected with flow distribution valve group 8 through the pipeline, and in the case that the output power of main pump group unit 1 is adapted, electric control unit 9 controls auxiliary pump group unit 14 to be in the standby state of not being started, so as to further improve the reliability, safety and normal operation guarantee of hydraulic pump station; in the case that the output power of main pump group unit 1 is insufficient or fails, electric control unit 9 controls auxiliary pump group unit 14 to start, and high pressure oil can be provided to flow distribution valve group 8 together with main pump group unit 1. Flow distribution valve group 8 can combine the high pressure oil of main pump group unit 1 and auxiliary pump group unit 14 to flow to flow distribution valve group 8 for pressure regulation, and according to the power requirement of each external equipment, different pressure and flow oil is distributed to the actuating mechanism of corresponding equipment, and the combined high pressure oil is distributed and output. Electric control unit 9 is the core of the whole hydraulic pump station electric control system, is used for collecting the signals and data of each sensor and displaying, and is used for outputting the control signals of each sensor, flow distribution valve group 8, main pump group unit 1 and auxiliary pump group unit 14 through cable, and is used for controlling the action of each electrical element (such as sensor chip, electromagnet and motor) of hydraulic pump station. Cooling unit includes cooler 12 and cooling pump group unit 15. Cooler 12 is installed on the bottom plate in oil tank 4 and is connected with cooling pump group unit 15 through the pipeline and is used for cooling the high temperature hydraulic oil in oil tank 4. The top plate 25 of cooling pump group unit 15 is connected with the upper cover plate of oil tank 4 and is used for providing power for the hydraulic oil circulating cooled by cooler 12. Auxiliary pump group unit 14 and cooling pump group unit 15 are basically same as main pump group unit in composition and structure, and only power, function and specification are different, and here will not be repeated. Sensor includes oil temperature sensor 6 and liquid level sensor 7. Oil temperature sensor 6 and liquid level sensor 7 are installed on the mounting seat of the upper cover plate of oil tank 4 and are used for detecting the temperature and liquid level of oil in oil tank 4 respectively.The utility model discloses a hydraulic pump station through adopting integrated structure design, reduces the component specification and quantity (such as the specification and quantity of pipeline and cable) of traditional independent operation's hydraulic pump station, realizes the oil supply of multiple users sharing a set of hydraulic pump station through the oil supply integration of multiple equipment, and the integrated structure design is simple in structure, and under the premise of meeting the function, the lightweight structure design of hydraulic pump station is carried out, and the installation space of ship cabin is reduced in compact structure design, and the weight of hydraulic pump station is reduced through the titanium steel section material of adaptation, and the weight is light and the space occupation is small, and the load of ship is improved, the transmission path of pump group vibration is lengthened through the way of setting up the roof 25 hoisting of main pump group unit 1 and auxiliary pump group unit 14, the space of the installation fixed component of the upper cover plate, lateral wall and base of oil tank 4 is increased, and the transmission rate of vibration is greatly reduced, and the effect of shock absorption and noise reduction is realized, and the reliability, safety and guarantee of the operation of hydraulic pump station are further improved through the combination of electric control unit and oil distribution valve group.

[0053] In an optional embodiment of the utility model, as shown in Figure 1A and Figure 1B , the hydraulic pump station further comprises an oil return filter group, and the oil return filter group 5 is arranged on the main pump control circuit of the main pump group unit 1. For example, the oil return filter group 5 can be connected with the actuator oil return pipeline. It can also be installed on the flange of the upper cover plate of the oil tank 4, used for filtering the low-pressure oil returned from each actuator, and installed on the flange of the upper cover plate of the oil tank 4, used for further reducing the oil pressure of the low-pressure oil return and improving the speed of the low-pressure oil return.

[0054] In an optional embodiment of the utility model, the hydraulic pump station can further comprise a liquid level meter 10 and an air filter 13. The liquid level meter 10 can be installed on the inner and outer lateral walls of the oil tank 4, used for observing and measuring the height of the oil level in the oil tank 4 on the outer lateral 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, used for filtering the air inside and outside the oil tank 4.

[0055] In an optional embodiment of the utility model, the hydraulic pump station can comprise two main pump group units 1, which can be arranged on the main pump control circuit in series or in parallel through pipelines (not shown in the figure).

[0056] In an optional embodiment of the utility model, as shown in Figure 1A , Figure 1B and Figure 2As shown, the main pump group 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 a main pump control circuit; the oil-immersed motor 16 and the hydraulic pump 20 are rotationally connected through a connecting piece 18; the hydraulic pump 20 and the throttle valve 22 are connected through a pipeline; and the throttle valve 22 and the flow meter 24 are arranged on a top plate 25 of the main pump group unit 1. The motor pump group of a conventional hydraulic system is generally provided with a low-voltage motor and a squirrel cage structure, and in addition to the stator and rotor of the motor, it also includes a machine shell, front and rear end covers and a terminal box and other components. In order to protect the above-mentioned internal components of the personnel and the motor, the machine shell, the front and rear end covers and the terminal 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 is usually cooled by a fan installed on the tail of the motor shaft, and the fan often generates a large noise and vibration during operation. The motor pump group of the above-mentioned conventional hydraulic system has obvious problems in weight and occupied space. The main pump group unit 1 of the utility model selects an oil-immersed motor 16 to carry a load-sensitive pump to control the flow of output oil. Compared with the conventional motor pump group, the structure of the main pump group unit 1 is arranged except that the shell, fan, front and rear end covers and other motor accessories of the traditional motor are omitted, so that the structure between the oil-immersed motor 16 and the load-sensitive pump can be more compact, and the weight is about 33% of the same specification ordinary motor pump group. The connection between the oil-immersed motor 16 and the load-sensitive pump does not need a bell cover and a shaft coupling (see Figure 2 ), but is connected with the load-sensitive pump by a small and compact connecting piece 18. On the one hand, the extra weight of the bell cover and the shaft coupling is saved; on the other hand, the structure is small and compact, and the occupied space is smaller. The oil-immersed motor 16 itself is cooled by low-temperature oil returned, reducing the noise and vibration caused by the rotation of the fan.

[0057] In the utility model, oil immersed motor 16 is connected with hydraulic pump 20 through connecting piece 18, hydraulic pump 20 adopts load sensitive pump, so that hydraulic pump 20 can automatically adjust flow and pressure output according to load demand, and provide the flow and pressure required by automatic matching flow distribution valve group 8. When load sensitive pump is arranged on several valve ports of flow distribution valve group 8, several valve ports of flow distribution valve group 8 can be simultaneously actuated, and the flow is not affected by load, and the position range of each actuating mechanism distributed by flow distribution valve group 8 can be accurately controlled, so that the required accurate flow and pressure are distributed to each actuating mechanism at its position, the main pump group unit 1 and / or auxiliary pump group unit 14 in hydraulic pump station can be operated with minimum power, the hydraulic pump station is operated in the form of low energy consumption, and the energy consumption waste of hydraulic pump station operation is reduced. The oil outlet and control port of hydraulic pump are connected to the valve block on top plate 25 through pipeline respectively, wherein the oil outlet of hydraulic pump is connected to the valve block on top plate 25 corresponding to itself through high-pressure hose 19, and the control port of hydraulic pump is connected to the valve block on top plate 25 corresponding to itself through control oil hose 21. The throttle valve 22 can adopt a proportional throttle valve, which is installed on the valve block on the top plate 25, and is used to control the flow and pressure difference of the oil in the hydraulic pump 20, and then control the displacement of the hydraulic pump, so that the flow is adjustable to achieve the purpose of controlling the specific actuating mechanism. For example, the proportional throttle valve can control the flow and pressure of the pump liquid according to the preset control signal and the feedback signal of the hydraulic pump 20, so that the hydraulic pump 20 can realize the corresponding execution action or execution effect. The proportional throttle valve can also control the input and output flow of the oil in the hydraulic pump 20 by adjusting, while ensuring that the hydraulic pump 20 realizes more accurate rotating speed and automatic position precision control in a stable state, further making the action speed and execution position of each actuating mechanism distributed by the flow distribution valve group be precisely 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 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 alternative embodiment of the utility model, as shown in Figure 2 The main pump group unit 1 further comprises a high-pressure filter 23, which is installed on the valve block and used for filtering the high-pressure oil liquid from the oil outlet of the hydraulic pump 20.

[0059] In an alternative embodiment of the utility model, as shown in Figure 2As shown, the hanger 26 is arranged between the oil-immersed motor 16 and the top plate 25, and the hanger 26 and the oil-immersed motor 16 are connected through the first elastic damper. The top plate 25 and the hanger 26 are welded as a whole, the upper part of the top plate 25 is connected and fixed with the oil tank 4 through bolt mounting, and the lower part of the top plate 25 is connected with the main pump group unit 1 through the first elastic damper. The oil-immersed motor 16 and the hydraulic pump 20 are all immersed in the hydraulic oil in the oil tank 4 in the form of oil immersion, and the noise generated by the oil-immersed motor 16 and the hydraulic pump 20 in the working process needs to be further diffused to the outside through the hydraulic oil and the oil tank 4. In the noise transmission path, the shell wall of the hydraulic oil and the oil tank 4 can greatly attenuate the transmitted noise, so as to reduce the diffusion noise level. The noise and vibration of the motor and the hydraulic pump of the conventional hydraulic pump station are relatively significant when running, the noise is diffused to the surrounding through the air, and the vibration is directly transmitted to the ship deck through the hydraulic pump station base and propagated along the deck. According to the test results, the noise of the oil-immersed motor 16 and the hydraulic pump 20 of the utility model is 20-30dB(A) lower than that of the conventional hydraulic pump station with the same power.

[0060] In the utility model, the main pump group unit is composed of an oil-immersed motor, a first elastic damper, a connecting piece, a high-pressure hose, a hydraulic pump, a control oil hose, a proportional throttle valve, a high-pressure filter, a flowmeter, a top plate and a hanger. The oil-immersed motor is connected with the hydraulic pump through the connecting piece, 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 and is used for controlling the differential pressure of inlet and outlet oil, thereby controlling the displacement of the hydraulic pump, so as to achieve the purpose of adjustable flow. The high-pressure filter 23 is installed on the valve block and is used for filtering the high-pressure oil liquid at the pump outlet. The flowmeter 24 is used for detecting the actual output flow. The top plate and the hanger are welded as a whole, the upper part of the top plate is mounted and connected with the oil tank, and the lower part of the hanger is connected with the oil-immersed motor through the first elastic damper. The first elastic damper can isolate a part of the vibration in the running process of the oil-immersed motor and the hydraulic pump.

[0061] As a preferred embodiment, the first elastic damper is selected as a rubber damper 17. The rubber damper 17 is easy to shape and tightly combined with the surface of the metal shell of the oil-immersed motor 16. By adopting a preset sheet-shaped triangular, rectangular, circular, or other polygonal shape of the rubber damper 17, the stiffness and strength requirements of the oil-immersed motor 16 in different directions between the spacing and the suspension bracket 26 can be met. The internal damping of the rubber damper 17 is large, the effective frequency range of the shock absorption is large, and it can adapt to various vibration directions (such as axial, transverse, longitudinal, and rotary) of the oil-immersed motor 16 at high frequency. In addition to shock absorption, it also has good sound insulation effect. In addition, the rubber damper 17 has strong temperature adaptability, especially for use in high-temperature oil at a working temperature range of 0°C to 70°C. It has the advantages of light weight, small volume, low price, small wear, easy installation, long service life, and easy replacement. The rubber damper 17 is used to isolate part of the vibration of the oil-immersed motor 16 and the hydraulic pump 20 during operation. It is convenient to use and has obvious vibration isolation effect. The suspension bracket 26 is arranged to enable the oil-immersed motor 16 to be arranged in a hanging manner in the oil tank 4. The vibration transmission path of the motor and the hydraulic pump structure during operation is lengthened. The area of the upper cover plate, side wall, and base of the oil tank 4 for installing and fixing other components is increased, and the transmission rate of the vibration is greatly reduced.

[0062] In an optional embodiment of the utility model, the hydraulic pump station further comprises a second elastic damper, which is arranged at the bottom outside the oil tank 4. The second elastic damper is matched with the first elastic damper to form a two-stage vibration isolation structure. The second elastic damper is not limited to the elastic plate-shaped elastic piece and the spiral steel wire rope damper 2. The elastic plate-shaped elastic piece or the steel wire rope damper 2 can be directly and uniformly arranged on the bottom area outside the oil tank 4. As a preferred embodiment, the steel wire rope damper 2 can be sleeved on the steel wire fixed around the bottom outside the oil tank 4. In addition, the middle part of the bottom outside the oil tank 4 can also be uniformly distributed with fixed steel wires, and a plurality of steel wire rope dampers 2 can be sleeved on the steel wires for isolating the vibration of the main pump group unit 1 and the oil tank 4 during the operation of the hydraulic pump station. The conventional hydraulic pump station generally cannot effectively eliminate and isolate the low-frequency vibration of the motor pump group. The hydraulic pump station of the utility model adopts a two-stage vibration isolation structure. The first-stage vibration isolation structure is that the motor pump group units in the main pump group unit and the auxiliary pump group unit adopt dampers (such as rubber dampers 17) for vibration isolation. The second-stage vibration isolation structure is that the steel wire rope dampers 2 installed at the bottom of the oil tank 3 are used for overall vibration isolation. The first-stage vibration isolation structure and the second-stage vibration isolation structure are matched in quantity and arrangement (such as the number is generally even, and the uniform arrangement and symmetrical arrangement are adopted) to form a two-stage vibration isolation structure. For example, Figure 6As shown in the figure, the weight of the oil-immersed motor 16 and the hydraulic pump 20 represented by M1, the stiffness k1 of the rubber damper of the first-stage vibration isolation structure, and the damping C1 of the rubber damper are inherent attribute parameters adapted to the first-stage vibration isolation structure. The weight of all the components of the hydraulic pump station except M1, the stiffness k2 of the steel wire rope damper of the second-stage vibration isolation structure, and the damping C2 of the steel wire rope damper are inherent attribute parameters adapted to the second-stage 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 part of the excitation force of M1, thereby reducing the inertial force transmission rate between the overall hydraulic pump station and the hull deck, so that the two-stage vibration isolation structure achieves 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 further arranged on the bottom plate of the oil tank 4. The vibration sensor 11 can be arranged on the inner wall of the bottom plate of the oil tank 4, used for detecting the vibration condition of the overall oil tank 4 and sending 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 electronic control unit 9 can control and adjust the running speed of the main pump unit 1 and the auxiliary pump unit 14 to reduce the vibration frequency of the main pump unit 1 and the auxiliary pump unit 14, so that the overall hydraulic pump station meets the low-noise vibration isolation requirement through the above damping structure design. The structure of the oil-immersed motor 16 is generally thinner than that of a conventional motor. In order to adapt to the environment of ship pitching, the hydraulic pump station of the utility model is adapted to form a two-stage vibration isolation structure through the second elastic damper and the first elastic damper, thereby reducing the influence of the inertial force generated by the hull movement on the structural strength of the load-sensitive pump.

[0064] In an optional embodiment of the utility model, as shown in Figure 3A and Figure 3B As shown in the figure, the flow distribution valve group 8 includes an oil distribution valve block 28, a pressure measuring exhaust joint 29 arranged on the side of the oil distribution valve block 28, a flow distribution valve group sensor, and a control valve and an oil inlet 27 arranged on the upper part of the oil distribution valve block 28. The oil inlet 27 is connected with the main pump unit through a pipeline. The control valve is electrically connected with the electronic control unit 9 through a cable. The hydraulic components of the flow distribution valve group 8 are fixedly installed on the oil distribution valve block 28 through bolts. The oil inlet 27 is arranged on the flow distribution valve group 8 and is used for connecting the main pump unit 1 through a pipeline. The pressure measuring exhaust joint 29 can be arranged on the oil distribution valve block 28 in a communication or shut-off manner, used for measuring the oil pressure in the oil distribution valve block 28 through a connected pressure gauge during maintenance. The flow distribution valve group sensor adopts a pressure sensor 34, used for detecting the pressure of the output oil of the flow distribution valve group 8.

[0065] In an optional embodiment of the utility model, as shown in Figure 3AAnd Figure 3B As shown in the figure, the control valve includes: a two-way reversing valve 30 adjacent to the pressure measuring exhaust joint 29, an electromagnetic conversion valve 33 arranged on the sensor side of the valve group, and a proportional overflow 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 conversion valve 33 are arranged on the oil outlet 27, which is connected to different actuators, and the oil outlet 27 is used to provide high-pressure oil for different actuators. The two-way reversing valve 30 and the electromagnetic conversion valve 33 are used to control the connection and shutdown of each oil outlet on the valve block 28. The proportional overflow valve 31 is used to adjust the different hydraulic pressures of the valve group 8 and the hydraulic pump station to adapt to the hydraulic requirements of different actuators corresponding to the hydraulic pump station output.

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

[0067] In an optional embodiment of the utility model, as shown in Figure 3A And Figure 3B As shown in the figure, the valve group 8 further 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 arranged on the flow circuit formed by the oil inlet 27 and the oil return port 39. The manual pump assembly includes: an oil outlet one 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 two 37 and an oil outlet three 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 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 one 35, the oil outlet two 37 and the oil outlet three 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 one 35, the oil outlet two 37 and the oil outlet three 38 of the manual pump assembly through a pipeline, and at least one of the oil outlet one 35, the oil outlet two 37 and the oil outlet three 38 is connected to the corresponding valve group interface of the 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 on the side wall of the oil tank 4 beside the oil return port 39. When the proportional overflow valve 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 can still work normally.

[0068] As a preferred embodiment of the utility model, the electromagnetic overflow valve 32 can be a spare part, when the proportional overflow valve 31 fails, the proportional overflow valve 31 of the fault is isolated by closing the manual stop valve 40, and the hydraulic pump station using the electromagnetic overflow valve 32 still adopts the normal working state.

[0069] In an optional embodiment of the utility model, as shown in Figure 4 The rotation speed of the oil-immersed motor 16 is a pre-set rotation speed, therefore a load-sensitive pump is adopted as the hydraulic pump 20 is rotationally connected with the oil-immersed motor 16, and a proportional throttle valve 22 is arranged on the outlet oil way of the load-sensitive pump, the opening size of the proportional throttle valve 22 is controlled by the electric control unit 9, so that the proportional throttle valve 22 can cause the pressure difference of the oil-immersed motor 16 before and after starting and stopping, and the oil outlet pressure of the proportional throttle valve 22 is guided to the hydraulic adjusting mechanism in the load-sensitive pump through the control oil hose 21, so that the hydraulic displacement of the load-sensitive pump changes correspondingly. The flowmeter 24 is arranged on the oil outlet oil way of the load-sensitive pump, the flowmeter 24 can be replaced by a flow sensor, and the flow sensor can be used to collect the flow information of the load-sensitive pump in real time for the closed-loop control of the controller PID, so that the control precision of the load-sensitive pump is higher, and the requirements of various actuators of the adaptive load are met.

[0070] In an optional embodiment of the utility model, as shown in Figure 5 The high-pressure oil liquid of the two main pump unit 1s is converged and integrated by the valve group 8, when the hydraulic pump station and the valve group 8 are normally operated, the manual stop valve 40 is in the open state, the proportional overflow valve 31 can adjust the adaptive oil pressure of the hydraulic pump station and the valve group 8 in real time according to the different working condition requirements of the hydraulic pump station and the valve group 8 based on the electric control unit 9, when the proportional overflow valve 31 fails, the manual stop valve 40 can be closed in a manual closing mode by the manual pump assembly, the proportional overflow valve 31 of the fault is isolated, and the current highest hydraulic pressure is determined by the electromagnetic overflow valve 32 which is arranged in parallel with the proportional overflow valve 31 and is a spare part, so that the accuracy and reliability of the oil pressure deployment are improved. The two-way reversing valve 30 and the electromagnetic reversing valve 31 are used for opening and closing the high-pressure oil way, when any oil way or multiple oil ways of the oil outlet one 35, the oil outlet two 37 and the oil outlet three 38 of the valve group 8 are needed to supply oil, the corresponding valve port is controlled to be in the corresponding open state by the electric control unit 9. At this time, the pressure sensor 34 can perform the closed-loop control of the oil pressure with the proportional overflow valve 31.

[0071] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any person skilled in the art can make some changes or modifications to the above disclosed technical contents to make equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical solution of the present application, shall still fall within the scope of the technical solution of the present application.

Claims

1. A hydraulic pump station, characterized in that, The hydraulic system comprises: An oil tank (4) for storing and dissipating oil, a main pump unit (1) arranged in the oil tank (4), a flow distribution valve group (8) arranged on the outer shell of the oil tank (4) and connected to the main pump unit through a pipeline, an electric control unit (9) arranged on the side wall of the oil tank (4), and a cooler (12) arranged 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 connected to the flow distribution valve group (8) through a pipeline; The flow distribution valve group (8) is mounted on the mounting seat arranged outside the oil tank (4); The flow distribution valve group (8) is connected to each actuator through a pipeline; The electric control unit (9) is electrically connected to the sensors mounted in the oil tank (4), the flow distribution valve group (8) and the main pump unit (1) through cables.

2. The hydraulic pump station of claim 1, wherein, The hydraulic system further comprises an auxiliary pump unit (14), the auxiliary pump unit (14) is connected to the flow distribution valve group (8) through 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 of claim 1, wherein, The hydraulic system further comprises an oil return filter group (5) connected to the oil return pipeline of the actuator.

4. The hydraulic pump station of claim 1, wherein, The main pump unit (1) comprises an oil-immersed motor (16), a hydraulic pump (20), a throttle valve (22) and a flow meter (24) connected in sequence on a main pump control circuit; The oil-immersed motor (16) and the hydraulic pump (20) are connected through a connecting piece (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).

5. The hydraulic pump station of claim 4, wherein, A hanger (26) is arranged between the oil-immersed motor (16) and the top plate (25), and the hanger (26) and the oil-immersed motor (16) are connected through a first elastic damper.

6. The hydraulic pump station of claim 5, wherein, The hydraulic pump station further comprises a second elastic damper arranged at the bottom outside the oil tank (4), and the second elastic damper and the first elastic damper form a two-stage vibration isolation structure.

7. The hydraulic pumping station of claim 1, wherein, The flow distribution valve group (8) comprises an oil distribution valve block (28), a pressure measuring exhaust connector (29) arranged beside the oil distribution valve block (28), a flow distribution valve group sensor, and a control valve 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 is electrically connected to the electric control unit (9) through a cable.

8. The hydraulic pump station of claim 7, wherein, The control valve comprises a two-way reversing valve (30) adjacent to the pressure measuring exhaust connector (29), an electromagnetic conversion valve (33) arranged on the side of the flow distribution valve group sensor, 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 of claim 7, wherein, The control valve further comprises 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 electric control unit (9) through a cable.

10. The hydraulic pump station of claim 7, wherein, The flow distribution valve group (8) further comprises an oil return port (39) and a manual pump assembly; The manual pump assembly is located on the side of the oil inlet (27) and arranged on the flow distribution circuit formed by the oil inlet (27) and the oil return port (39), and comprises The oil outlet one (35) is arranged at one side of the oil return port (39), the manual pump oil inlet (36) is arranged at the other side of the oil return port (39), the manual stop valve (40) is arranged at the opposite side of the oil inlet (27), and the oil outlet two (37) and the oil outlet three (38) are 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 with at least one of the oil outlet one (35), the oil outlet two (37) and the oil outlet three (38) of the manual pump assembly through a pipeline.

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