Full-closed low-noise servo motor pump energy device

Abstract

The invention discloses a fully-closed low-noise servo motor pump energy device, and relates to the field of ship equipment, the fully-closed low-noise servo motor pump energy device comprises a target motor pump, the outer side of the target motor pump is sleeved with a fully-closed sound-proof cover, the sound-proof cover comprises a sound-proof cover left end cover, a sound-proof cover middle section and a sound-proof cover right end cover, and the target motor pump is installed on the sound-proof cover middle section; the sound-proof cover left end cover and the sound-proof cover right end cover are connected to the two ends of the sound-proof cover middle section correspondingly. The sound-proof cover left end cover and the sound-proof cover right end cover are each provided with a hydraulic connector, the target motor pump is connected with two hydraulic hoses, and the other ends of the hydraulic hoses are connected to the hydraulic connectors. The problems of vibration reduction and noise reduction of motor pumps for closed hydraulic systems such as existing electro-static pressure systems are solved.

Description

Technical Field

[0001] The present invention designs a fully enclosed low-noise servo motor pump energy device, which is mainly used for vibration reduction, noise reduction and cooling of closed hydraulic system pump sources such as low-noise electrostatic pressure systems, and belongs to the field of ship equipment. Background Art

[0002] At present, most motor pumps are open structures, that is, the motor pump is directly installed on the hydraulic system valve group or the machine base. There are also semi-closed installation structures, that is, a sound-absorbing and soundproof cover is installed on the outside and the soundproof cover and the motor are installed on the system valve group or base through a shock absorber. A hole needs to be opened at the hydraulic interface between the motor pump and the soundproof cover, and a continuous sound wave shield cannot be formed, so the noise attenuation effect of the motor pump is poor. There is also a solution to immerse the motor pump as a whole in an open oil tank, but it is not used in closed hydraulic systems without an open oil tank.

[0003] Chinese patent CN 11240294A discloses a motor pump installation and fixing device, which uses a screw and a spring to fix the motor pump, relies on the spring to buffer the vibration of the motor pump, and sets a vent for heat dissipation of the motor pump. The sound wave leakage of the heat dissipation hole reduces the attenuation effect of air noise.

[0004] Chinese patent CN11298566B discloses a vibration reduction and cooling device for a motor pump, which uses a spring to reduce vibration of the motor pump and a fan to cool the motor pump, introducing fan noise. The device is not suitable for applications with strict noise requirements.

[0005] Chinese patent CN212959084U discloses a motor pump installation box, which is mainly used to protect the motor pump from being contaminated by external debris, but does not have the function of reducing vibration and noise.

[0006] Chinese patent CN107859620B discloses a high-pressure, low-noise servo motor pump based on a dual-output shaft servo motor pump, which adopts an integrated design of a permanent magnet synchronous motor and a screw pump. However, the mounting foot of the motor pump is directly rigidly connected to the valve group of the hydraulic system, and the hydraulic oil circuit is also directly rigidly connected through the internal valve block flow channel. The vibration of the motor pump body is transmitted to the hydraulic system with almost no attenuation. Therefore, there is a problem of almost no attenuation of vibration and noise energy radiating to the system and the environment. Summary of the invention

[0007] The technical problem solved by the present application is: to overcome the deficiencies of the prior art and to provide a fully enclosed low-noise servo motor pump energy device to solve the vibration reduction and noise reduction problems of motor pumps used in closed hydraulic systems such as existing electrostatic pressure systems.

[0008] The fully enclosed low-noise servo motor pump energy device involved in the present invention is arranged on the hydraulic power assembly of the electrostatic servo system or the closed hydraulic system, and is used to reduce the vibration energy transmitted by the motor pump to the power assembly and the air noise radiated outward.

[0009] The technical solutions provided by this application are as follows:

[0010] A fully enclosed low-noise servo motor pump energy device includes a target motor pump. The outer side of the target motor pump is provided with a fully enclosed soundproof cover, the soundproof cover includes a left end cover, a middle section of the soundproof cover and a right end cover of the soundproof cover. The target motor pump is installed in the middle section of the soundproof cover, and the left end cover and the right end cover of the soundproof cover are respectively connected to the two ends of the middle section of the soundproof cover; a hydraulic interface is respectively installed on the left end cover and the right end cover of the soundproof cover, and the target motor pump is connected to two hydraulic hoses, and the other end of the hydraulic hose is connected to the hydraulic interface.

[0011] The soundproof cover is filled with damping insulating oil, and the damping insulating oil is used to absorb the vibration of the target motor pump and air noise.

[0012] The soundproof cover is provided with an oil filling port and an air discharge port. Damping insulating oil is filled into the fully enclosed soundproof cover through the oil filling port, and the internal air is discharged through the air discharge port.

[0013] The target motor pump is connected to the middle section of the soundproof cover through an oil-resistant rubber vibration damper.

[0014] The target motor pump itself has an integrated water cooling structure, and the target motor pump is connected to two water cooling hoses for inputting or outputting cooling water to the water cooling structure. A cooling water interface is installed on each of the left end cover and the right end cover of the sound insulation cover, and the other end of the water cooling hose is connected to the cooling water interface.

[0015] The target motor pump is connected to a through-cabin electrical connector via a flexible cable, and the through-cabin electrical connector is connected to the middle section of the soundproof cover.

[0016] A rectangular sealing ring is used to seal the left end cover of the soundproof cover, the middle section of the soundproof cover and the right end cover of the soundproof cover.

[0017] The target motor pump is a low-noise motor pump.

[0018] In summary, this application at least includes the following beneficial technical effects:

[0019] (1) The fully enclosed soundproof cover structure has good acoustic shielding effect.

[0020] (2) By using the method of fully filling the internal damping oil, secondary attenuation of vibration and air noise can be achieved, further improving the vibration isolation and sound insulation effects.

[0021] (3) The target motor pump is connected to the soundproof cover through a vibration absorber, a hose and a flexible cable, so that the vibration of the motor pump cannot be rigidly transmitted to the soundproof cover, thereby achieving all-round isolation and attenuation of the vibration noise of the motor pump.

[0022] (4) The internal hoses, cables, etc. are compactly arranged, and the overall structure is small and light. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the working principle diagram of the fully enclosed low-noise servo motor pump energy device;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of a fully enclosed low-noise servo motor pump energy device;

[0025] Figure 3 for Figure 2 Structural diagram that hides the middle section of the soundproof cover.

[0026] Explanation of the accompanying figures: 1. Left end cover of the soundproof cover; 2. Middle section of the soundproof cover; 3. Right end cover of the soundproof cover; 4. Hydraulic interface; 5. Cooling water interface; 6. Through-cabin electrical connector; 7. Shock absorber mounting nail; 8. Oil filling port; 9. Exhaust port; 10. Rubber shock absorber; 11. Rectangular sealing ring; 12. Water cooling hose; 13. Hydraulic hose; 14. Target motor pump; 15. Flexible cable; 16. Damping insulating oil. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments disclosed in the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] The embodiment of the present application discloses a fully enclosed low-noise servo motor pump energy device. The fully enclosed low-noise servo motor pump energy device described in this patent uses a fully enclosed soundproof cover to wrap the low-noise motor pump as a whole to achieve continuous sound wave shielding, and uses the damping insulating oil filled inside to perform secondary attenuation on the air noise and vibration of the motor pump. It uses shock absorbers, flexible hoses, flexible cables, etc. to isolate the vibration of the motor pump, thereby attenuating the noise and vibration transmitted to the outside by the motor pump to the greatest extent.

[0029] The motor pump is installed as a whole inside the fully enclosed soundproof cover. The soundproof cover adopts a three-section structure, which consists of a left end cover, a middle section and a right end cover. The three sections are sealed by O-rings. The three sections are made of damping alloy materials, which have good absorption, damping and attenuation effects on air noise and mechanical vibration. The fully enclosed soundproof cover is filled with damping oil to secondary absorb the vibration and air noise of the target motor pump, which can further improve the vibration reduction and noise reduction effect. The target motor pump is installed in the middle section of the soundproof cover and connected to the soundproof cover through a rubber vibration damper. The rubber vibration damper is used to isolate and attenuate the vibration of the motor pump. The target motor pump needs to be cooled by cooling water. It is connected to the through-cabin water cooling joint on the soundproof cover through a hose to realize the circulation of cooling water. The target motor pump is connected to the through-cabin hydraulic interface on the soundproof cover through a hose to realize the circulation of hydraulic medium. The target motor pump is connected to the through-cabin electrical connector on the soundproof cover through a flexible cable to realize the transmission of electrical energy and electrical signals. Both the hose and the flexible cable can attenuate the vibration energy of the motor pump, so that the vibration level transmitted to the soundproof cover is minimized.

[0030] The present invention provides an embodiment.

[0031] The working principle of the fully enclosed low noise servo motor pump energy device is as follows Figure 1 It mainly includes: the left end cover of the soundproof cover 1, the middle section of the soundproof cover 2, the right end cover of the soundproof cover 3, the hydraulic interface 4, the cooling water interface 5, the through-cabin electrical connector 6, the oil filling port 8, the exhaust port 9, the rubber shock absorber 10, the water cooling hose 12, the hydraulic hose 13, the target motor pump 14, the flexible cable 15, the damping insulating oil 16, etc.

[0032] The fully enclosed soundproof enclosure is composed of a left end cover 1, a middle section 2 of the soundproof enclosure, and a right end cover 12, and the three sections are sealed by O-rings. The damping insulating oil 16 is filled into the fully enclosed soundproof enclosure through the oil filling port 8, and the internal air is discharged through the vent port 14. The damping insulating oil 16 can absorb the vibration and air noise of the target motor pump 14 for a second time. The target motor pump 14 is connected to the middle section 2 of the soundproof enclosure through an oil-resistant rubber shock absorber 10. The target motor pump 14 is connected to the cooling water interface 5 through a water-cooling hose 12. The cooling water interface 5 is respectively provided on the left end cover 1 of the soundproof enclosure and the right end cover 3 of the soundproof enclosure. The O-ring is used to achieve sealing, and each cooling water interface allows the cooling water to flow in both directions. The target motor pump 14 is connected to the hydraulic interface 4 through a hydraulic hose 13. The hydraulic interface 4 is respectively provided on the left end cover 1 of the soundproof enclosure and the right end cover 3 of the soundproof enclosure. The O-ring is used to achieve sealing, and each hydraulic interface 4 allows the hydraulic medium to flow in both directions. The target motor pump 14 is connected to the through-cabin electrical connector 6 via a flexible cable 15 , and the through-cabin electrical connector 6 and the soundproof cover are sealed via an O-ring.

[0033] The schematic diagram of the fully enclosed low noise servo motor pump energy device is as follows Figure 2 and Figure 3 It is mainly composed of the left end cover 1 of the soundproof cover, the middle section 2 of the soundproof cover, the right end cover 3 of the soundproof cover, the hydraulic interface 4, the cooling water interface 5, the through-cabin electrical connector 6, the shock absorber mounting nail 7, the refueling port 8, the exhaust port 9, the rubber shock absorber 10, the rectangular sealing ring 11, the water cooling hose 12, the hydraulic hose 13, the target motor pump 14, etc.

[0034] The left end cover 1 of the soundproof cover, the middle section 2 of the soundproof cover and the right end cover 3 of the soundproof cover are connected and fixed by bolts to form a fully enclosed soundproof cover. The three are sealed by a rectangular sealing ring 11 to prevent the internal oil from leaking to the outside. The hydraulic interface 4 is connected to the left and right end covers of the soundproof cover through a threaded structure and is sealed with an O-ring. The cooling water interface 5 is connected to the left and right end covers of the soundproof cover and is sealed with an O-ring. The refueling port 8 and the exhaust port 9 are connected to the right end cover of the soundproof cover through threads and are sealed with an O-ring. The rubber shock absorber is connected to the middle section of the soundproof cover through the shock absorber mounting screws 7 and is sealed with an O-ring. The water cooling hose 11 is connected to the target motor and the cooling water interface 5 through a cone interface and is sealed with an O-ring. The hydraulic hose 13 is connected to the target motor and the hydraulic interface 4 through a cone interface and is sealed with an O-ring. The target motor pump 14 is preferably a low-noise motor pump, and has an integrated water cooling channel or water cooling structure. The water-cooling hose 12 , the hydraulic hose 13 and the flexible cable 15 are all flexible structures.

[0035] The main invention points are as follows:

[0036] (1) Use a fully enclosed soundproof enclosure to isolate the noise of the motor pump. The motor pump is built into the fully enclosed soundproof enclosure to achieve continuous shielding of sound waves. The soundproof enclosure material is made of damping alloy, which has a good shielding and attenuation effect on air noise.

[0037] (2) Damping insulating oil is filled inside the shell. The damping effect of the oil can absorb the air noise of the motor pump, achieving a secondary attenuation effect of the air noise. The damping effect of the oil can also absorb the vibration of the motor, achieving a secondary attenuation of the vibration.

[0038] (3) The motor pump and the closed soundproof cover are connected and fixed with oil-resistant rubber vibration dampers, which can effectively attenuate the vibration of the motor pump.

[0039] (4) The hydraulic interface and cooling water interface of the motor pump are connected to the sealed through-cabin joint of the closed soundproof cover through a hose to realize the transportation of oil and cooling water. The vibration of the motor pump is attenuated by the hose, which can greatly reduce the vibration energy transmitted to the closed shell.

[0040] (5) The electrical interface of the motor pump is connected to the sealed through-cabin electrical connector of the closed soundproof enclosure through a flexible cable to achieve the transmission of electrical energy and electrical signals. The flexible cable is also used to greatly attenuate the vibration energy transmitted from the motor pump to the closed shell.

[0041] (6) The motor pump body preferably uses a permanent magnet synchronous motor and a screw pump, which have lower vibration and noise than conventional plunger motor pumps or spur gear motor pumps. However, the above five innovations are still applicable to other forms of motor pumps.

[0042] The contents not described in detail in this application specification belong to the common knowledge of those skilled in the art.

[0043] The present application is described in detail above in conjunction with specific implementation methods and exemplary examples, but these descriptions cannot be understood as limiting the present application. Those skilled in the art understand that, without departing from the spirit and scope of the present application, a variety of equivalent replacements, modifications or improvements can be made to the technical solution of the present application and its implementation methods, all of which fall within the scope of the present application. The scope of protection of the present application shall be subject to the attached claims.

Claims

1. A fully enclosed low-noise servo motor pump energy device, characterized in that: The invention comprises a target motor pump (14), the outer side of the target motor pump (14) is provided with a fully enclosed soundproof cover, the soundproof cover comprises a left end cover (1), a middle section (2) and a right end cover (3), the target motor pump (14) is installed in the middle section (2), the left end cover (1) and the right end cover (3) are respectively connected to the two ends of the middle section (2); a hydraulic interface (4) is respectively installed on the left end cover (1) and the right end cover (3), the target motor pump (14) is connected to two hydraulic hoses (13), and the other end of the hydraulic hose (13) is connected to the hydraulic interface (4).

2. A fully enclosed low-noise servo motor pump energy device according to claim 1, characterized in that: The soundproof cover is filled with a damping insulating oil liquid (16), and the damping insulating oil liquid (16) is used to absorb the vibration of the target motor pump (14) and air noise.

3. A fully enclosed low-noise servo motor pump energy device according to claim 1, characterized in that: The soundproof cover is provided with an oil filling port (8) and an air discharge port (14); the damping insulating oil (16) is filled into the fully enclosed soundproof cover through the oil filling port (8), and the internal air is discharged through the air discharge port (14).

4. A fully enclosed low-noise servo motor pump energy device according to claim 1, characterized in that: The target motor pump (14) is connected to the middle section (2) of the soundproof cover via an oil-resistant rubber vibration damper (10).

5. A fully enclosed low-noise servo motor pump energy device according to claim 1, characterized in that: The target motor pump (14) has an integrated water cooling structure. The target motor pump (14) is connected to two water cooling hoses (12) for inputting or outputting cooling water to the water cooling structure. A cooling water interface (5) is respectively installed on the left end cover (1) of the soundproof cover and the right end cover (3) of the soundproof cover. The other end of the water cooling hose (12) is connected to the cooling water interface (5).

6. A fully enclosed low-noise servo motor pump energy device according to claim 1, characterized in that: The target motor pump (14) is connected to a through-cabin electrical connector (6) via a flexible cable (15), and the through-cabin electrical connector (6) is connected to the middle section (2) of the soundproof enclosure.

7. A fully enclosed low noise servo motor pump energy device according to claim 1, characterized in that: A rectangular sealing ring (11) is used to seal the left end cover (1) of the soundproof cover, the middle section (2) of the soundproof cover, and the right end cover (3) of the soundproof cover.

8. A fully enclosed low-noise servo motor pump energy device according to claim 1, characterized in that: The target motor pump (14) is a low-noise motor pump.

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