Combined type submarine driving device for restraining gap leakage

Abstract

The invention discloses a combined submarine driving device for inhibiting clearance leakage, which comprises a pump shell, a blade and a pump inlet, a circle of blade front cover plate is arranged on the periphery of the blade, the blade front cover plate is fixedly connected with the periphery of the blade, no clearance exists between the blade front cover plate and the blade, and the blade front cover plate rotates together with the blade; a gap is formed between the blade front cover plate and the pump shell in the radial direction, and a leakage flow channel is formed in the gap. A plurality of outer magnet assemblies are evenly arranged on the pump shell in the flowing direction of the leakage flow channel, a plurality of inner magnet assemblies are evenly arranged on the blade front cover plate in the flowing direction of the leakage flow channel, and the outer magnet assemblies and the inner magnet assemblies correspond to each other in position and are opposite in polarity, so that magnetic induction lines are generated. The front cover plate is additionally arranged on the impeller part, a magnetic structure is additionally arranged, the leakage flow of the submarine driving device is restrained according to the electromagnetic induction principle, the leakage amount and noise are reduced, and the efficiency and concealment of the submarine driving device are improved.

Description

Technical Field

[0001] The invention relates to a novel marine submarine driving device, in particular to a combined submarine driving device capable of suppressing gap leakage. Background Art

[0002] Among all the equipment used to explore marine resources, submersibles have unique advantages. They can not only dive into the seawater for close and accurate observation and photography, but also carry out salvage and construction operations. Since the 21st century, submersibles have gradually been valued in scientific research, and the research on submersible-related technologies has become a focus, and their status in the military field of various countries has become increasingly important.

[0003] Submersibles have excellent navigation performance, including excellent stability and seaworthiness. Excellent performance makes submersibles a military vessel that can both operate at a fixed depth and freely maneuver in shallow waters. The maneuverability of a submersible determines the stability of its operation and the maneuverability of its movement. The rapid improvement in the performance requirements for military weapons and surface combat ships in today's era is actually an improvement in the requirements for the maneuverability and maneuverability of submersibles.

[0004] The excellent performance of a submersible is inseparable from an advanced power unit. A pump-jet propulsion system with a tapered vector nozzle can delay the occurrence of cavitation, reduce the noise of the submersible and improve the propulsion efficiency. Therefore, pump-jet propulsion systems have more applications in military fields such as high-speed torpedoes and submersibles. Submersibles powered by pump-jet propulsion systems are an important part of modern new submersibles. In future maritime operations, the key to victory is not only advanced weapons and equipment, but also a pump-jet submersible with excellent performance. Therefore, the research and manufacture of pump-jet propulsion submersibles still needs to be further optimized.

[0005] However, the current pump-jet vector propulsion submersibles have problems such as high noise and low efficiency. Figure 1 As shown, 101 is the inlet, 102 is the blade, 103 is the pump housing, 104 is the guide vane, 105 is the guide cap, and 106 is the outlet. When the vector thruster is working, seawater enters from the inlet 101, and the blade 102 rotates at high speed, accelerating the seawater and forcing it to flow axially, passing through the guide vane 104, the guide cap 105 and the outlet 106 in sequence. Most of the seawater flows from the front of the blade to the back of the blade along the blade, and a small amount of seawater flows through the gap between the blade 102 and the pump housing 103, not flowing according to the predetermined trajectory, forming a high-speed jet, generating noise, and increasing leakage, reducing pumping efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide a combined submarine driving device for suppressing gap leakage, and to optimize and transform the thruster by utilizing the principles of fluid dynamics and electromagnetics to achieve the goals of low noise and high efficiency.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: A combined submarine drive device for suppressing gap leakage comprises a pump casing and blades arranged in the pump casing, the pump casing has a pump inlet, a circle of blade front cover plates are arranged on the periphery of the blades, the blade front cover plates are fixedly connected to the periphery of the blades with no gap between the two, and the blade front cover plates rotate together with the blades; there is a gap between the blade front cover plate and the pump casing in the radial direction, and a leakage flow channel is formed at the gap; A plurality of groups of outer magnet assemblies are evenly arranged on the pump housing along the flow direction of the leakage flow channel, and a plurality of groups of inner magnet assemblies are evenly arranged on the blade front cover plate along the flow direction of the leakage flow channel. The positions of the outer magnet assemblies and the inner magnet assemblies are corresponding and the polarities are opposite, thereby generating magnetic induction lines; After seawater enters from the leakage flow channel, it cuts the magnetic induction lines generated by the outer magnet assembly and the inner magnet assembly.

[0008] Further, each set of external magnet assemblies is composed of a plurality of external magnet sheets distributed along the circumference, and the external magnet sheets are fixed to the inner surface of the pump housing; Each group of inner magnet components consists of multiple inner magnet pieces distributed along the circumference, and the inner magnet pieces are fixed on the outer surface of the front cover of the blade. The outer magnet piece and the inner magnet piece have corresponding positions and opposite polarities.

[0009] Furthermore, the outer magnet piece is embedded and fixed on the inner surface of the pump housing to keep the inner surface of the pump housing flat; the inner magnet piece is embedded and fixed on the outer surface of the blade front cover plate to keep the outer surface of the blade front cover plate flat.

[0010] Furthermore, the outer magnet sheet is embedded and fixed on the inner surface of the pump housing, and the outer magnet sheet protrudes from the inner surface of the pump housing; The inner magnet piece is embedded and fixed on the outer surface of the blade front cover plate, and the inner magnet piece protrudes from the outer surface of the blade front cover plate.

[0011] Further, each set of outer magnet assemblies is composed of outer magnet rings arranged along the circumference, and the outer magnet rings are fixed to the inner surface of the pump housing; Each set of inner magnet assemblies is composed of an inner magnet ring arranged along the circumference, and the inner magnet ring is fixed to the outer surface of the front cover of the blade; The outer magnet ring has a corresponding position to the inner magnet ring and has opposite polarity.

[0012] Furthermore, the outer magnet ring is embedded and fixed on the inner surface of the pump housing to keep the inner surface of the pump housing flat; the inner magnet ring is embedded and fixed on the outer surface of the blade front cover plate to keep the outer surface of the blade front cover plate flat.

[0013] Furthermore, the outer magnet ring is embedded and fixed on the inner surface of the pump housing, and the outer magnet ring protrudes from the inner surface of the pump housing; The inner magnet ring is embedded and fixed on the outer surface of the blade front cover plate, and the inner magnet ring protrudes from the outer surface of the blade front cover plate.

[0014] Furthermore, the blade front cover plate is coaxially arranged with the pump casing, so that there are gaps with equal spacing between the blade front cover plate and the pump casing in the radial direction, thereby forming leakage flow channels with equal spacing.

[0015] Furthermore, it also includes a monitoring system, which includes an ammeter. The front cover plate of the blade is connected to an upper wire, and the pump housing is connected to a lower wire. The upper wire and the lower wire are respectively connected to the ammeter.

[0016] The beneficial effects of the present invention are: 1. The present invention adds a front cover plate to the impeller component and adds a magnetic structure, and uses the principle of electromagnetic induction to suppress the leakage flow of the submarine drive device, thereby reducing the leakage volume and noise, and has great value in improving the efficiency and concealment of the submarine drive device.

[0017] Since there is no gap between the blade and the blade cover, there is no leakage in the blade tip gap. However, a new gap is added between the blade front cover and the pump casing. This part is the leakage flow channel of the leakage flow (seawater). When the leakage flow (seawater) passes through the leakage flow channel, it cuts the magnetic induction line, resulting in the Lenz effect. The Ampere force induced by the induced current hinders the leakage of seawater, thereby improving efficiency and reducing the noise caused by high-speed jets.

[0018] 2. The present invention also monitors the fluid movement state inside the driving device by adding a monitoring system, and can grasp the internal flow law of the driving device in different motion conditions or condition transitions in real time, which is of great significance to the safety and stability of the submarine.

[0019] The monitoring system of the present invention adopts an ammeter design to monitor the induced current, and calculates the velocity of the gap fluid through the size of the induced current, and then obtains the leakage amount. This is the first design to estimate the pump gap leakage amount through the electromagnetic induction phenomenon, which provides important support for the future research and optimization of vector thrusters. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a pump-jet vector propulsion submersible in the prior art; Figure 2 is a schematic diagram of the present invention; Figure 3 It is a schematic diagram of the principle of the present invention.

[0021] Figure 2 and Figure 3In the figure: 101: pump inlet; 102: blades; 201: pump housing; 202: blade front cover; 203: outer magnet assembly; 204: inner magnet assembly; 205: leakage flow channel; 206: magnetic induction line; 207: upper wire connecting the ammeter and the blade front cover; 208: lower wire connecting the ammeter and the pump housing; 209: ammeter.

[0022] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Embodiment 1: like Figure 2 As shown, this embodiment discloses a combined submarine drive device for suppressing gap leakage, including a pump casing 201, a pump inlet 101 and blades 102, wherein: the pump casing 201 serves as the outer shell of the pump system, the pump inlet 101 serves as the entrance for external fluid to enter the pump system, and the blades 102 serve as the main medium for the pump system to transfer energy to seawater.

[0025] A circle of blade front cover plates 202 is disposed on the periphery of the blade 102 . The blade front cover plates 202 are fixedly connected to the periphery of the blade 101 with no gap therebetween. The blade front cover plates 202 rotate together with the blade 102 .

[0026] The blade front cover plate 202 is coaxially arranged with the pump housing 201 and has gaps with equal spacing in the radial direction, and leakage channels 205 are formed at the gaps.

[0027] A plurality of groups of outer magnet assemblies 203 are evenly arranged on the pump housing 201 along the flow direction of the leakage flow channel, and a plurality of groups of inner magnet assemblies 204 are evenly arranged on the blade front cover plate 202 along the flow direction of the leakage flow channel. The positions of the outer magnet assemblies 203 and the inner magnet assemblies 204 correspond to each other and have opposite polarities (N pole to S pole, or S pole to N pole), thereby generating magnetic induction lines 206 at the leakage flow channel, providing magnetic field conditions for the occurrence of Ampere force.

[0028] Specifically in this embodiment, each group of outer magnet assemblies 203 is composed of a plurality of outer magnet sheets distributed along the circumference, and the outer magnet sheets are fixed to the inner surface of the pump housing 201. Each group of inner magnet assemblies 204 is composed of a plurality of inner magnet sheets distributed along the circumference, and the inner magnet sheets are fixed to the outer surface of the blade front cover plate 202. The outer magnet sheets correspond to the inner magnet sheets in position and have opposite polarities.

[0029] The outer magnet sheet and the inner magnet sheet are fixed by embedding. The outer magnet sheet is embedded and fixed on the inner surface of the pump housing 201, so that the inner surface of the pump housing 201 remains flat; the inner magnet sheet is embedded and fixed on the outer surface of the blade front cover plate 202, so that the outer surface of the blade front cover plate 202 remains flat. The above-mentioned plane fixing method will reduce noise. According to the use scenario of the submersible, if the low noise requirement is higher, the plane fixing method of this embodiment is selected.

[0030] The present invention adds a blade front cover plate 202 on the basis of the traditional vector thruster, and adds a magnetic structure between the blade front cover plate 202 and the pump housing 201, and the magnetic structure is used to provide a gap magnetic field. Since there is no gap between the blade 101 and the blade cover plate 202, there is no tip gap leakage, but a new gap is added between the blade front cover plate 202 and the pump housing 201, which is the leakage flow channel 205 of the leakage flow (seawater). When the leakage flow (seawater) passes through the leakage flow channel 505, it cuts the magnetic induction line, generating a Lenz effect, and the Ampere force induced by the induced current hinders the leakage of seawater, thereby improving efficiency and reducing noise caused by high-speed jets.

[0031] Specifically, the principle of the leakage (seawater) cutting the magnetic induction line when passing through the leakage flow channel 505 is as follows: Figure 3 As shown. The outer magnet assembly 203 and the inner magnet assembly 204 generate magnetic induction lines 206 at the leakage channel 205, forming a uniformly distributed magnetic field. When seawater passes through the leakage channel 205, it is equivalent to cutting the magnetic induction lines 206. According to Faraday's law of electromagnetic induction, the conductor cutting the magnetic induction lines will generate an induced current. The induced current is conducted circumferentially along the rotating shaft of the pump. Due to the existence of the induced current, the magnetic field produces an Ampere force on the seawater. The force is opposite to the flow direction, so it has a certain inhibitory effect on the leakage in the gap channel. When the submarine moves at high speed, the fluid movement speed in the gap increases, and the Ampere force generated is greater, which resists the high-speed jet generated by the micro-scale gap, reduces the noise problem caused by the high-speed jet, and improves the concealment. At the same time, due to the reduction in leakage, the efficiency of the thruster will be improved.

[0032] In addition, the present embodiment is also provided with a monitoring system, specifically comprising: an upper conductor 207 is connected to the front cover plate 202 of the blade, and a lower conductor 208 is connected to the pump housing 201. The upper conductor 207 and the lower conductor 208 lead the induced current out of the system and transmit it to the ammeter 209. According to the pointer offset of the ammeter, the speed of seawater passing through the leakage flow channel can be calculated (I (current intensity) = B (magnetic induction intensity) × L (conductor length, circumference length of the gap center) * v (seawater flow rate) / R (ammeter resistance)), so the leakage amount can be estimated by the change of the ammeter, so as to grasp the flow situation inside the pump system.

[0033] In this way, the fluid movement state inside the drive device can be monitored, and the internal flow laws of the drive device under different motion conditions or condition transitions can be grasped in real time, which is of great significance for further understanding the internal flow mechanism of the vector thruster and is also of great significance to the safety and stability of the submarine.

[0034] The induced current is monitored by the pointer change of the ammeter 209, and the velocity of the gap fluid is calculated by the magnitude of the induced current, thereby obtaining the leakage amount. Monitoring the leakage amount is of great significance for further understanding the internal flow mechanism of the vector thruster.

[0035] Embodiment 2: The difference between this embodiment and the first embodiment lies in the different fixing methods of the outer magnet assembly and the inner magnet assembly.

[0036] In this embodiment, after the outer magnet sheet is embedded and fixed, the outer magnet sheet should protrude from the inner surface of the pump housing. After the inner magnet sheet is embedded and fixed, the inner magnet sheet should protrude from the outer surface of the blade front cover.

[0037] The above-mentioned protruding fixing method has a better flow blocking effect. According to the use scenario of the submersible, if the flow blocking requirement is greater, the protruding fixing method of this embodiment is selected.

[0038] Embodiment three: The difference between this embodiment and the first embodiment lies in the different compositions of the outer magnet assembly and the inner magnet assembly.

[0039] In this embodiment, each group of outer magnet assemblies 203 is composed of outer magnet rings arranged along the circumference. The outer magnet rings are embedded and fixed on the inner surface of the pump housing 201, and the inner surface of the pump housing 201 is kept flat.

[0040] In this embodiment, each group of inner magnet assemblies 204 is composed of inner magnet rings arranged along the circumference. The inner magnet rings are fixed to the outer surface of the blade front cover plate 202 and keep the outer surface of the blade front cover plate 202 flat.

[0041] The outer magnet ring has a corresponding position to the inner magnet ring and has opposite polarity.

[0042] Embodiment 4: The difference between this embodiment and the second embodiment lies in the different compositions of the outer magnet assembly and the inner magnet assembly.

[0043] In this embodiment, each set of outer magnet assemblies 203 is composed of outer magnet rings arranged along the circumference. The outer magnet rings are embedded and fixed on the inner surface of the pump housing 201 , and the outer magnet rings protrude from the inner surface of the pump housing 201 .

[0044] In this embodiment, each group of inner magnet assemblies 204 is composed of inner magnet rings arranged along the circumference. The inner magnet rings are fixed to the outer surface of the blade front cover plate 202 , and the inner magnet rings protrude from the outer surface of the blade front cover plate 202 .

[0045] The outer magnet ring has a corresponding position to the inner magnet ring and has opposite polarity.

[0046] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

[0047] If the words "first", "second", etc. are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only to facilitate the description of the present invention and simplify the description. Unless otherwise stated, the above words have no special meaning.

[0048] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A combined submarine drive device for suppressing gap leakage, comprising a pump casing and blades arranged in the pump casing, the pump casing having a pump inlet, characterized in that: A circle of blade front cover plates are arranged on the periphery of the blades, the blade front cover plates are fixedly connected to the periphery of the blades with no gap between them, and the blade front cover plates rotate together with the blades; there is a gap between the blade front cover plates and the pump housing in the radial direction, and a leakage flow channel is formed at the gap; A plurality of groups of outer magnet assemblies are evenly arranged on the pump housing along the flow direction of the leakage flow channel, and a plurality of groups of inner magnet assemblies are evenly arranged on the blade front cover plate along the flow direction of the leakage flow channel. The positions of the outer magnet assemblies and the inner magnet assemblies are corresponding and the polarities are opposite, thereby generating magnetic induction lines; After seawater enters from the leakage flow channel, it cuts the magnetic induction lines generated by the outer magnet assembly and the inner magnet assembly.

2. A combined submarine driving device for suppressing gap leakage according to claim 1, characterized in that: Each set of external magnet assemblies is composed of a plurality of external magnet sheets distributed along the circumference, and the external magnet sheets are fixed to the inner surface of the pump housing; Each group of inner magnet components consists of multiple inner magnet pieces distributed along the circumference, and the inner magnet pieces are fixed on the outer surface of the front cover of the blade. The outer magnet piece and the inner magnet piece have corresponding positions and opposite polarities.

3. A combined submarine driving device for suppressing gap leakage according to claim 2, characterized in that: The outer magnet piece is embedded and fixed on the inner surface of the pump housing to keep the inner surface of the pump housing flat; the inner magnet piece is embedded and fixed on the outer surface of the blade front cover plate to keep the outer surface of the blade front cover plate flat.

4. A combined submarine driving device for suppressing gap leakage according to claim 2, characterized in that: The outer magnet sheet is embedded and fixed on the inner surface of the pump housing, and the outer magnet sheet protrudes from the inner surface of the pump housing; The inner magnet piece is embedded and fixed on the outer surface of the blade front cover plate, and the inner magnet piece protrudes from the outer surface of the blade front cover plate.

5. A combined submarine driving device for suppressing gap leakage according to claim 1, characterized in that: Each set of external magnet assemblies is composed of an external magnet ring arranged along the circumference, and the external magnet ring is fixed to the inner surface of the pump housing; Each set of inner magnet assemblies is composed of an inner magnet ring arranged along the circumference, and the inner magnet ring is fixed to the outer surface of the front cover of the blade; The outer magnet ring has a corresponding position to the inner magnet ring and has opposite polarity.

6. A combined submarine driving device for suppressing gap leakage according to claim 5, characterized in that: The outer magnet ring is embedded and fixed on the inner surface of the pump housing to keep the inner surface of the pump housing flat; the inner magnet ring is embedded and fixed on the outer surface of the blade front cover plate to keep the outer surface of the blade front cover plate flat.

7. A combined submarine driving device for suppressing gap leakage according to claim 5, characterized in that: The outer magnet ring is embedded and fixed on the inner surface of the pump housing, and the outer magnet ring protrudes from the inner surface of the pump housing; The inner magnet ring is embedded and fixed on the outer surface of the blade front cover plate, and the inner magnet ring protrudes from the outer surface of the blade front cover plate.

8. A combined submarine driving device for suppressing gap leakage according to any one of claims 1 to 7, characterized in that: The blade front cover plate is coaxially arranged with the pump casing, so that there are equal-spaced gaps between the blade front cover plate and the pump casing in the radial direction, forming equal-spaced leakage flow channels.

9. A combined submarine driving device for suppressing gap leakage according to any one of claims 1 to 7, characterized in that: It also includes a monitoring system, which includes an ammeter. The front cover plate of the blade is connected with an upper wire, and the pump housing is connected with a lower wire. The upper wire and the lower wire are respectively connected to the ammeter.

Images