Pump jet propulsion device capable of changing stator position

Abstract

The invention provides a pump jet propulsion device capable of changing the position of a stator, and belongs to the field of underwater propulsion devices. The problems that a pump-jet propulsion device is complex in structure and high in manufacturing cost, and a propulsion device and a matched aircraft need to be redesigned and remanufactured when the stator position of the pump-jet propeller is changed are solved. The pump spraying propelling device comprises a separable guide pipe, a stator, a rotor and an annular connecting device, the separable guide pipe is connected with the stator through the annular connecting device, and the stator and the rotor are also connected with the main shaft through the annular connecting device. The separable guide pipe is combined with the stator and the rotor, and the guide pipe is connected with the stator, the stator, the rotor and the main shaft through the rotor connecting device. Switching of the front stator type pump spraying propelling device and the rear stator type pump spraying propelling device is achieved through the separable guide pipe and the stator, application of multiple working conditions can be achieved, the cost needed for redesigning and manufacturing the pump spraying propelling device is reduced, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The invention belongs to the field of underwater propulsion devices, and in particular relates to a pump-jet propulsion device capable of changing the position of a stator. Background Art

[0002] The vast ocean holds a vast variety of resources. Exploring the ocean and expanding into deeper and farther reaches is our inevitable choice. With technological advancements, the marine industry has experienced rapid growth. To better utilize marine resources, both surface vessels and underwater vehicles require higher-performance propulsion systems. Furthermore, to reduce the impact of noise and vibration, more and more vehicles are using pump-jet propulsion systems. Pump-jet propulsion systems offer higher propulsion efficiency than traditional propellers at high speeds and significantly reduce noise.

[0003] Pump-jet propulsion systems are generally classified into two types: front-mounted stator and rear-mounted stator. The stator blades of the front-mounted stator adjust the incoming axial flow into a flow with a certain amount of circumferential rotation (pre-swirl), optimizing the angle of attack at the rotor inlet and reducing flow separation on the rotor blades. The stator of the rear-mounted stator redirects the flow at the rotor outlet into an axial flow with strong circumferential rotation (vortex), reducing energy waste, improving thrust efficiency, stabilizing the wake, and reducing vibration and noise. Both types of propulsion systems have their own advantages and disadvantages and need to be applied according to different working environments. However, pump-jet propulsion systems are complex and expensive. Changing the stator position of a pump-jet propulsion system requires the redesign and manufacture of the propulsion system and its supporting vehicle. Summary of the Invention

[0004] In view of this, in order to solve the technical problems mentioned in the above background technology, the present invention provides a pump-jet propulsion device that can change the position of the stator, which can realize the switching of two pump-jet propulsion devices with a front stator and a rear stator. The pump-jet propulsion device includes a detachable duct, a stator, a rotor and a ring-shaped connecting device. The detachable duct is connected to the stator through the ring-shaped connecting device, and the stator rotor is also connected to the main shaft through the circular ring-shaped connecting device. The present invention combines the detachable duct with the stator rotor, and connects the duct with the stator and the stator, rotor and main shaft through the rotor connecting device. The detachable duct and rotor connecting device can realize the change of the stator position and adapt to various working conditions.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pump-jet propulsion device that can change the position of the stator, comprising a detachable conduit, a stator connecting device, a stator, a rotor, a sleeve, a connecting device and a main shaft, the detachable conduit is two detachable semicircles, a longitudinal keyway is provided on the inner wall of the detachable conduit, one end of the stator is fixed on the annular sleeve, and the other end is connected to the stator connecting device, a key is provided on the stator connecting device, which cooperates with the keyway on the detachable conduit to realize the sliding and fixation of the stator in the detachable conduit, the sleeve is annular and is sleeved on the outer periphery of the main shaft; a main shaft with a longitudinal groove is axially installed in the detachable conduit, and the rotor is fixed on the rotor connecting device, the rotor connecting device is composed of two detachable left and right parts, which are sleeved on the outer periphery of the main shaft, and a connecting key is provided in the rotor connecting device, which cooperates with the groove between the main shafts to realize the movement and fixation of the rotor on the main shaft. Furthermore, the stator connecting device, the stator and the sleeve are integrally formed.

[0006] Furthermore, the rotor connecting device includes a sleeve and a key, and the key is provided in the sleeve.

[0007] A switching method for a pump-jet propulsion device capable of changing the stator position, Step 1: When the stator is in the rear-mounted configuration, separate the rotor connection device from the main shaft, and simultaneously move the stator and the stator connection device forward along the keyway on the detachable guide tube until the stator connection device is engaged with the front end of the detachable guide tube; Step 2: Then combine the separated rotor connecting devices into one at the rear end of the stator, and then move backward along the groove in the main shaft until the rotor connecting device matches the groove. At this time, the stator is in the front form.

[0008] Compared with the prior art, the beneficial effects of the pump-jet propulsion device capable of changing the stator position described in the present invention are as follows: the present invention uses a detachable duct and stator to realize switching between a front-stator type and a rear-stator type pump-jet propulsion device, can realize the application of multiple working conditions, reduce the cost required to redesign and manufacture the pump-jet propulsion device, and has a simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1 A perspective view of a pump-jet propulsion device capable of changing the stator position according to the present invention; Figure 2 This is a schematic structural diagram of a rear-mounted stator configuration of a pump-jet propulsion device capable of changing the stator position according to the present invention; Figure 3 Schematic diagram of the transformation process from the rear stator form to the front stator form; Figure 4 This is a schematic structural diagram of the front stator of the pump-jet propulsion device capable of changing the stator position according to the present invention; Figure 5 Schematic diagram of the structure of the rotor connecting device and the rotor according to the present invention; In the figure: 1-detachable guide tube, 2-stator connecting device, 3-stator, 4-rotor, 5-sleeve, 6-rotor connecting device, 7-main shaft, 8-groove, 6-1-sleeve, 6-2-key. DETAILED DESCRIPTION The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features therein can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.

[0010] See also Figure 1-5 The present embodiment describes a pump-jet propulsion device capable of changing the position of the stator. The detachable conduit 1 is divided into two symmetrical parts on the left and right to realize the disassembly of the device. A keyway is longitudinally provided inside the detachable conduit 1 for the stator 3 and the stator connecting device 2 to slide and be fixed. One end of the stator 3 is fixed to the annular sleeve 5, and the other end is fixed to the stator connecting device 2. The sleeve 5 is a circular ring sleeve that is sleeved on the outer periphery of the main shaft 7 and is not fixed to the main shaft 7. A longitudinal main shaft 7 is longitudinally provided inside the detachable conduit 1, and the rotor 4 is fixed on the rotor connecting device 6. The rotor connecting device 6 can be split into two left and right parts, which are sleeved on the outer periphery of the main shaft 7, and a connecting key is provided under the rotor connecting device 6 to cooperate with the groove 8 between the main shafts 7 to realize the movement and fixation of the rotor 4 on the main shaft 7.

[0011] Figure 2 This is a rear-mounted stator design, with rotor 4 at the front, secured to main shaft 7 via rotor connector 6. Stator 3 is secured to stator connector 2 and sleeve 5. Stator connector 2 engages the keyway of conduit 1 via a key. During operation, main shaft 7 rotates, driving rotor 4. Stator 3 remains stationary on conduit 1.

[0012] Figure 3 In the process of transformation from the rear-mounted stator form to the front-mounted stator form, the detachable guide tube 1 is divided into two parts, the rotor connecting device 6 is separated and moved backward, and the stator end connecting device 2 is moved forward.

[0013] The detachable conduit 1 is provided with a keyway inside to enable the stator connecting device 2 to move.

[0014] The upper end of the stator 3 is connected to the stator connecting device 2, and the lower end is connected to the sleeve 5. The function of the stator connecting device 2 is to enable the stator 3 to move in the keyway track on the detachable guide tube 1. During the operation of the propeller, the main shaft 7 rotates, and the rotor connecting device 6 is fixed to the main shaft 7 by a key, driving the rotor 4 to rotate.

[0015] The function of the sleeve 5 is to separate the stator 3 from the main shaft 7. The main shaft 7 can rotate in the sleeve 5 without affecting the stator 3, so that the stator 3 and the detachable guide tube 1 remain stationary.

[0016] The lower end of the rotor 3 is fixed on the rotor connecting device 6, and the rotor connecting device 6 can move on the main shaft 7 to change the position of the rotor.

[0017] like Figure 5 As shown, the rotor connecting device 6 includes a sleeve 6 - 1 and a key 6 - 2 . The sleeve 6 - 1 is provided with a key 6 - 2 which can cooperate with the groove 8 on the main shaft 7 .

[0018] When the present invention Figure 1 As shown, when the stator is in the rear-mounted form, if it is to be changed to the front-mounted stator form, the detachable guide tube 1 is divided into two parts, and the rotor connecting device 6 at the rotor end is separated from the main shaft 7. At the same time, the stator 3 and the stator connecting device 2 are moved forward along the keyway on the detachable guide tube 1 until the stator connecting device 2 is matched with the front end of the detachable guide tube 1; then the separated rotor 4 is integrated into one at the rear end of the stator 3 through the rotor connecting device 6, and then moved backward along the groove 8 in the main shaft 7 until the rotor connecting device 6 is matched with the groove 8. At this time, the propulsion device reaches Figure 4 The front stator configuration is shown. This completes the conversion from a rear stator pump-jet propulsion device to a front stator pump-jet propulsion device. The embodiments of the present invention disclosed above are intended only to illustrate the present invention. The embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A pump-jet propulsion device capable of changing the stator position, characterized in that: The invention comprises a detachable conduit (1), a stator connecting device (2), a stator (3), a rotor (4), a sleeve (5), a rotor connecting device (6) and a main shaft (7), wherein the detachable conduit (1) is two detachable semicircles, a longitudinal keyway is provided on the inner wall of the detachable conduit (1), one end of the stator (3) is fixed on the annular sleeve (5), and the other end is connected to the stator connecting device (2), and a key is provided on the stator connecting device (2) to cooperate with the keyway on the detachable conduit (1) to realize the stator (3) Sliding and fixing in the detachable conduit (1), the sleeve (5) is annular and is sleeved on the outer periphery of the main shaft (7); the main shaft (7) with a longitudinal groove (8) is axially installed in the detachable conduit (1), and the rotor (4) is fixed on the rotor connecting device (6). The rotor connecting device (6) is a detachable left and right part, which is sleeved on the outer periphery of the main shaft (7), and a connecting key is provided in the rotor connecting device (6) to cooperate with the groove (8) between the main shaft (7) to realize the movement and fixing of the rotor (4) on the main shaft (7).

2. The pump-jet propulsion device capable of changing the stator position according to claim 1, characterized in that: The stator connecting device (2), the stator (3) and the sleeve (5) are integrally formed.

3. The pump-jet propulsion device with variable stator position according to claim 1, characterized in that: The annular rotor connecting device (6) comprises a sleeve (6-1) and a key (6-2), wherein the key (6-2) is arranged in the sleeve (6-1).

4. A switching method for a pump-jet propulsion device capable of changing the stator position according to any one of claims 1 to 3, characterized in that: Step 1: When the stator (3) is in the rear-positioned configuration, the annular rotor connecting device (6) is separated from the main shaft (7), and the stator (3) and the stator connecting device (2) are simultaneously moved forward along the keyway on the detachable guide tube (1) until the stator connecting device (2) is engaged with the front end of the detachable guide tube (1); Step 2: The separated annular rotor connecting device (6) is then integrated into one at the rear end of the stator (3), and then moved backward along the groove (8) in the main shaft (7) until the annular rotor connecting device (6) is matched with the groove (8), at which time the stator is in the front state.

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