Coaxial direct connection type water turbine pump

Abstract

The invention discloses a coaxial direct connection type water turbine pump. The coaxial direct connection type water turbine pump comprises a shell and a transmission shaft. A first partition plate and a second partition plate are arranged in the shell, the first partition plate divides the shell into a water pumping cavity and a power input cavity, and the second partition plate divides the power input cavity into a horizontal power input cavity and a vertical power input cavity; the shell is provided with a first water inlet, a first water outlet, a second water inlet and a second water outlet; the transmission shaft is connected with a first impeller, a second impeller and a third impeller, the first impeller is located in the horizontal power input cavity, and the second impeller is located in the vertical power input cavity; the third impeller is located in the water pumping cavity and used for pumping liquid. Through the horizontal power input cavity and the vertical power input cavity, kinetic energy and gravitational potential energy of water flow are fully utilized, and then the working efficiency and the energy conversion rate of the water turbine pump are improved. The energy loss in the transmission process is reduced, the working efficiency is improved, and no extra power source is needed in the working process.

Description

Technical Field

[0001] The present invention relates to the technical field of pump elements, and in particular to a coaxial direct-connected water turbine pump. Background Art

[0002] A coaxial, direct-coupled turbine pump is a water-lifting mechanism that combines a turbine and a pump coaxially. Powered by water, the turbine converts water energy into mechanical energy, which is then converted into water energy by the pump, lifting water from a low location to a higher location. Existing turbine pumps typically rely on the velocity of the water flow to impact the turbine's impeller, or on the potential energy generated by the water level drop to drive the impeller's rotation, which in turn drives the main shaft to operate the pump. However, turbine pumps cannot simultaneously utilize both the kinetic energy of the water flow and the potential energy of gravity. When the water flow velocity is insufficient, the impact force on the turbine pump's impeller is weak, making it difficult to increase its speed, resulting in low efficiency. Similarly, when the water level drop is small, the impeller's rotation is affected, resulting in a decrease in pumping capacity. This limits the overall conversion efficiency of the turbine pump, making it difficult to achieve high energy efficiency levels. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a coaxial direct-connected water turbine pump that can simultaneously utilize the kinetic energy and gravitational potential energy of the water flow.

[0004] The purpose of the present invention is achieved by adopting the following technical solutions:

[0005] A coaxial direct-connected water turbine pump, comprising:

[0006] A shell, wherein a first partition plate and a second partition plate are provided in the shell, the first partition plate divides the shell into a water pumping chamber and a power input chamber, and the second partition plate divides the power input chamber into a horizontal power input chamber and a vertical power input chamber that are interconnected; the shell is provided with a first water inlet, a first water outlet, a second water inlet, and a second water outlet, the first water inlet, the horizontal power input chamber, the vertical power input chamber, and the first outlet are connected along a first water flow direction; the second water inlet, the water pumping chamber, and the second water outlet are connected along a second water flow direction;

[0007] A transmission shaft, wherein the transmission shaft is connected with a first impeller, a second impeller and a third impeller, the first impeller is located in the horizontal power input chamber, the second impeller is located in the vertical power input chamber, the first impeller is used to convert the kinetic energy of the liquid into mechanical energy for the rotation of the transmission shaft, and the second impeller is used to convert the gravitational potential energy of the liquid into mechanical energy for the rotation of the transmission shaft, and the first impeller and the second impeller drive the transmission shaft to rotate in the same direction; the third impeller is located in the pumping chamber, and the third impeller is used to pump liquid.

[0008] Furthermore, the second impeller and the third impeller are spiral structures.

[0009] Furthermore, the first water inlet is provided with a filter screen.

[0010] Furthermore, the filter screen has a conical structure.

[0011] Furthermore, a first liquid through hole is provided on the second partition plate, and the first liquid through hole extends in a spiral line along the horizontal direction, and the diameter of the first liquid through hole gradually increases.

[0012] Furthermore, the first water inlet is connected to the horizontal power input cavity via a flow guide tube, and the direction of the flow guide tube is tangent to the horizontal power input cavity.

[0013] Furthermore, a plurality of the second water inlets are provided, and the plurality of the second water inlets are distributed at intervals around the circumference of the pumping chamber.

[0014] Furthermore, the second water outlet is provided with a one-way valve, and the one-way valve is used to prevent liquid from entering the water pumping chamber.

[0015] Furthermore, a plurality of support rods are provided in the housing, and the support rods are provided with connecting holes, and the connecting holes are used for installing bearings, and the transmission shaft is pivotally connected to the bearings.

[0016] Furthermore, the shell is a component made of acrylic material.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The first partition effectively separates the liquid within the pumping chamber and the power input chamber, preventing water from leaking into the power input chamber. This prevents the water in the pumping chamber from accidentally falling into the power input chamber, which could slow the flow rate in the horizontal power input chamber and reduce efficiency. The second partition divides the power input chamber into a horizontal power input chamber and a vertical power input chamber, enabling the turbine pump to efficiently utilize energy from the kinetic energy of the water flow and the gravitational potential energy released during its natural fall. During operation, water in the power conversion section first enters through the first water inlet, flows sequentially through the horizontal and vertical power input chambers, and, after completing the energy conversion process within these two chambers, smoothly exits the turbine pump through the first water outlet. Water in the pumping section enters through the second water inlet, is drawn through the pumping chamber, and then discharged through the second water outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the coaxial direct-connected water turbine pump of the present invention;

[0020] Figure 2 for Figure 1 The front view shown;

[0021] Figure 3 for Figure 2 The cross-sectional view shown;

[0022] Figure 4 It is a structural schematic diagram of the horizontal power input chamber of the coaxial direct-connected water turbine pump of the present invention.

[0023] In the figure: 1. Shell; 2. First partition plate; 3. Second partition plate; 4. First water inlet; 5. First water outlet; 6. Second water inlet; 7. Second water outlet; 8. First impeller; 9. Second impeller; 10. Third impeller; 11. Horizontal power input chamber; 12. Vertical power input chamber; 13. Pumping chamber; 14. Filter screen; 15. First liquid through hole; 16. Guide pipe; 17. Bearing; 18. Support rod. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element, or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element, or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] See also Figures 1-4 A coaxial direct-connected water turbine pump according to a preferred embodiment of the present invention includes: a housing 1 and a transmission shaft.

[0028] A first partition plate 2 and a second partition plate 3 are provided in the shell 1. The first partition plate 2 divides the shell 1 into a pumping chamber 13 and a power input chamber, and the second partition plate 3 divides the power input chamber into a horizontal power input chamber 11 and a vertical power input chamber 12 which are connected to each other; the shell 1 is provided with a first water inlet 4, a first water outlet 5, a second water inlet 6 and a second water outlet 7, the first water inlet 4, the horizontal power input chamber 11, the vertical power input chamber 12 and the first outlet are connected along the first water flow direction; the second water inlet 6, the pumping chamber 13 and the second water outlet 7 are connected along the second water flow direction.

[0029] The first partition plate 2 is used to effectively separate the liquid within the pumping chamber 13 and the power input chamber, thereby ensuring that the water in the pumping chamber 13 does not leak and seep into the power input chamber. This prevents the water flow in the horizontal power input chamber 11 from slowing down due to the accidental drop of liquid from the pumping chamber 13, thereby avoiding the resulting loss of efficiency. The second partition plate 3 divides the power input chamber into two parts: the horizontal power input chamber 11 and the vertical power input chamber 12. This allows the turbine pump to efficiently utilize energy by leveraging the kinetic energy of the water flow and the gravitational potential energy released by the water flow during its natural fall. During operation, the water flow of the power conversion part first enters through the first water inlet 4, flows through the horizontal power input chamber 11 and the vertical power input chamber 12 in sequence, and after completing the energy conversion process in these two chambers, it smoothly flows out of the turbine pump through the first water outlet 5. The water flow of the pumping part enters through the second water inlet 6, is sucked through the pumping chamber 13, and is discharged through the second water outlet 7.

[0030] The transmission shaft is connected to a first impeller 8, a second impeller 9 and a third impeller 10. The first impeller 8 is located in the horizontal power input chamber 11, and the second impeller 9 is located in the vertical power input chamber 12. The first impeller 8 is used to convert the kinetic energy of the liquid into mechanical energy for the rotation of the transmission shaft, and the second impeller 9 is used to convert the gravitational potential energy of the liquid into mechanical energy for the rotation of the transmission shaft. The first impeller 8 and the second impeller 9 drive the transmission shaft to rotate in the same direction; the third impeller 10 is located in the pumping chamber 13, and the third impeller 10 is used to pump liquid.

[0031] The blades of the first impeller 8 are perpendicular to the direction of the water flow. This blade orientation allows the water flow to directly impact the blades, thereby converting the kinetic energy of the water flow into mechanical energy for the circumferential rotation of the first impeller 8 around the drive shaft to the greatest extent possible. After the water flow undergoes the energy conversion process of the first impeller 8 in the horizontal power input chamber 11, it will naturally fall under the action of gravity and flow into the vertical power input chamber 12. In the vertical power input chamber 12, the impact force of the water flow drives the second impeller 9 to rotate around the drive shaft, thereby achieving energy conversion. The water flow passes through the energy conversion process of the first impeller 8 and the second impeller 9 in sequence, driving the drive shaft to rotate, and the drive shaft transfers the mechanical energy to the third impeller 10, driving the third impeller 10 to rotate around the drive shaft. When the third impeller 10 rotates, a pressure difference is generated below and above it. This pressure difference draws water in from the second water inlet 6 and pumps it out from the second water outlet 7.

[0032] It can be understood that as an alternative arrangement, by varying the relative distance between the horizontal power input chamber 11 and the vertical power input chamber 12, energy conversion can be achieved at different falling heights. In this process, the greater the height difference in the water flow, the more gravitational potential energy can be converted and utilized. However, this also increases the impact force on the blades of the second impeller 9. Therefore, the height difference should not be set too large to balance the relationship between energy conversion efficiency and equipment operational stability.

[0033] Working Principle: Water is introduced into the horizontal power input chamber 11 through the first water inlet 4. Within the horizontal power input chamber 11, the water impacts the first impeller 8, driving its rotation, thereby converting the water's kinetic energy into mechanical energy. The water then flows into the vertical power input chamber 12, where it impacts the second impeller 9, driving its rotation, thereby converting the water's gravitational potential energy into mechanical energy. The first and second impellers 8, 9 rotate in the same direction under the influence of the water flow. The first and second impellers 8, 9 are connected to a transmission rod, which transmits mechanical energy to the rod. This transmission rod rotates the third impeller 10, creating a pressure differential above and below it. This pressure differential causes liquid to be drawn into the pumping chamber 13 through the second water inlet 6. After being pressurized within the pumping chamber 13, it is pumped out through the second water outlet 7. The entire process uses the water flow as the power source. Through energy conversion and transmission, it drives the third impeller 10 within the pumping chamber 13, thereby achieving the water pumping function.

[0034] Clearly, the use of two chambers, horizontal power input chamber 11 and vertical power input chamber 12, fully utilizes the kinetic energy and gravitational potential energy of the water flow, thereby improving the operating efficiency and energy conversion rate of the water turbine pump. The first impeller 8, second impeller 9, and third impeller 10 are all mounted on the same drive shaft, effectively reducing energy loss during the transmission process and improving operating efficiency. The operation process is completely driven by the energy of the water flow itself, requiring no additional power source, achieving efficient conversion and utilization of water energy, while being environmentally friendly and energy-saving.

[0035] The second impeller 9 and the third impeller 10 are of a spiral structure. The second impeller 9 adopts a spiral structure, which can convert the force in the axial direction into the force in the circumferential direction, effectively converting the energy of the water flow into mechanical energy. The third impeller 10 adopts a spiral structure, which can convert the force in the circumferential direction into the force in the axial direction, effectively converting the mechanical energy into the energy of the water flow. The spiral structure enables the water flow to generate greater torque when impacting the impeller, thereby improving the rotation efficiency of the impeller. In the vertical power input chamber 12, the second impeller 9 converts the gravitational potential energy of the water flow into rotational mechanical energy through the blades of the spiral structure, and further transmits it to the drive shaft. The third impeller 10 is a key component of the water pumping part. Its spiral structure can pump water efficiently, generate a pressure difference through rotation, thereby sucking water from the second water inlet 6 and pumping it out through the second water outlet 7. The impeller design with a spiral structure improves the energy conversion efficiency of the water turbine pump and enhances the overall performance and stability of the equipment.

[0036] The first water inlet 4 is provided with a filter screen 14. The first water inlet 4 is mainly used to introduce water flowing in nature, such as water from rivers, streams or reservoirs, into the power input chamber of the water turbine pump to realize the utilization of natural resources. The filter screen 14 is mainly used to intercept debris such as branches, plastic bags, stones, aquatic plants in rivers or other waters to prevent them from entering the power input chamber with the water flow. Avoid clogging of the internal water flow channel, affecting the normal operation of the equipment, reducing work efficiency, and even damaging the equipment, increasing maintenance costs and downtime. Debris may also entangle on the impeller blades, increase the rotational resistance, and even cause the impeller to deform or break, causing serious damage. The filter screen 14 blocks debris, protects the smooth flow of the water channel, and maintains the efficient operation of the water turbine pump. Ensure that it can stably perform its pumping and delivery functions in various water environments.

[0037] In this embodiment, preferably, the filter screen 14 has a conical structure. The conical structure of the filter screen 14 expands the filtration area, so that the filter screen 14 can more effectively intercept debris such as branches, plastic bags, stones, aquatic plants, etc. in the water flow, thereby improving the filtration efficiency. Secondly, the surface of the conical filter screen 14 forms a certain angle with the direction of the water flow. When debris accumulates on the filter screen 14, the water flow can impact the debris and easily wash it away, thereby reducing the risk of clogging of the filter screen 14, maintaining smooth entry of water flow, and reducing the maintenance requirements of the filter screen 14. The conical filter screen 14 effectively protects the water flow channel and impeller and other components inside the water turbine pump, avoiding damage and efficiency loss caused by the entry of debris, and ensuring the stable operation of the water turbine pump.

[0038] In this embodiment, the second partition plate 3 is preferably provided with a first liquid-passing hole 15. This first liquid-passing hole 15 extends horizontally in a spiral curve, and its diameter gradually increases. After water enters the horizontal power input chamber 11, it impacts the first impeller 8, driving its rotation. The blades of the first impeller 8 fit against the sidewalls of the housing 1, creating several enclosed spaces between the housing 1 and the blades during impeller rotation to contain water. As the first impeller 8 rotates, these enclosed spaces move with the rotation of the blades. The spiral-shaped, gradually increasing diameter of the first liquid-passing hole 15 allows the liquid in the horizontal power input chamber 11 to be gradually discharged into the vertical power input chamber 12 during rotation. As the liquid is discharged, a negative pressure briefly develops within the enclosed spaces. This negative pressure, combined with the high pressure of the water entering the horizontal power input chamber 11, further propels the rotation of the first impeller 8, thereby enhancing the power conversion efficiency of the entire water turbine pump. This design not only optimizes the flow path of water, but also improves the efficiency of converting water energy into mechanical energy.

[0039] In this embodiment, preferably, the first water inlet 4 is connected to the horizontal power input chamber 11 through a flow guide 16, and the direction of the flow guide 16 is tangential to the horizontal power input chamber 11. When water flows into the flow guide 16, it enters along the tangential direction of the horizontal power input chamber 11, and then impacts the outer edge of the blade of the first impeller 8 at a vertical angle. The flow guide 16 not only ensures the efficient interaction between the direction of the water flow and the blades, but also increases the length of the lever arm by directing the water flow to the outer edge of the blade, thereby increasing the torque acting on the blade. Even when the water flow velocity is relatively low, sufficient torque can be generated to start or maintain the stable rotation of the first impeller 8. The efficiency of transferring the kinetic energy of the water to the impeller is improved, and the energy utilization efficiency is increased.

[0040] In this embodiment, preferably, multiple second water inlets 6 are provided, spaced apart circumferentially around the pumping chamber 13. Multiple second water inlets 6 ensure rapid and sufficient water flow into the pumping chamber 13. The second water inlet 6 effectively intercepts debris in the water, preventing it from entering the pumping chamber 13 and causing blockage, while also ensuring sufficient water flow to meet the flow rate required for pumping water in the pumping chamber 13. The provision of multiple second water inlets 6 improves pumping efficiency. Furthermore, the second water inlet 6 is positioned between the third impeller 10 and the first partition plate 2, ensuring smooth water flow into the pumping chamber 13 while avoiding interference with the operation of the power input chamber. Because debris in the water flow is intercepted outside the pumping chamber 13, the normal operation of the third impeller 10 is not directly interfered with, thereby ensuring stable operation of the entire turbine pump system. It is understood that, as an alternative embodiment, a filter 14 can be provided at the second water inlet 6 to prevent debris from being drawn into the pumping chamber 13 and damaging the third impeller 10.

[0041] The second water outlet 7 is equipped with a one-way valve that prevents liquid from entering the pumping chamber 13. This ensures that water can be smoothly pumped from the pumping chamber 13 to the second water outlet 7 and out of the turbine pump. The presence of the one-way valve prevents water from flowing back into the pumping chamber 13 at the second water outlet 7, thereby avoiding unnecessary load on the third impeller 10. When the third impeller 10 rotates, it transfers water from the pumping chamber 13 to the second water outlet 7. The one-way valve only allows water to flow in one direction, ensuring that water does not flow in the opposite direction, thereby improving the efficiency and performance of the turbine pump.

[0042] In this embodiment, preferably, multiple support rods 18 are provided within the housing 1. Each support rod 18 has a connection hole for mounting a bearing 17, and the drive shaft is pivotally connected to the bearing 17. The multiple support rods 18 and the bearing 17 together ensure the stable operation of the drive shaft. The multiple support rods 18 are evenly distributed within the power input chamber and spaced circumferentially, forming a stable support structure that effectively prevents the drive shaft from shifting or shaking under high-speed rotation or water flow impact, ensuring that it always rotates stably along its axis. The installation of the bearing 17 significantly reduces the friction between the drive shaft and the support rods 18, significantly reducing the friction experienced by the drive shaft during rotation. This not only reduces mechanical energy loss but also enables the turbine pump to operate the impeller within the power input chamber with less water flow impact even under low flow or low head conditions, ensuring reliable operation of the turbine pump under various operating conditions. This design significantly improves the operating efficiency of the equipment, enhances its ability to adapt to different water flow conditions, and extends the service life of the equipment.

[0043] The housing 1 is made of acrylic. Acrylic's excellent transparency allows for clear visibility of the housing 1, facilitating observation of the internal operation of the turbine pump. It is also resistant to UV rays, ensuring that the housing 1 resists yellowing and fading during long-term use. Acrylic's low density makes the housing 1 lightweight and easy to transport and install. Acrylic also exhibits excellent processability and can be easily formed into complex shapes to meet diverse design requirements. Furthermore, acrylic exhibits a certain degree of impact resistance, allowing it to withstand a certain degree of external impact, enhancing the durability of the housing 1.

[0044] In the description of this specification, the reference terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0046] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A coaxial direct-connected water turbine pump, characterized in that: include: A shell (1), wherein a first partition plate (2) and a second partition plate (3) are provided in the shell (1), wherein the first partition plate (2) divides the shell (1) into a pumping chamber (13) and a power input chamber, and the second partition plate (3) divides the power input chamber into a horizontal power input chamber (11) and a vertical power input chamber (12) that are interconnected; the shell (1) is provided with a first water inlet (4), a first water outlet (5), a second water inlet (6) and a second water outlet (7), wherein the first water inlet (4), the horizontal power input chamber (11), the vertical power input chamber (12) and the first outlet are connected along a first water flow direction; and the second water inlet (6), the pumping chamber (13) and the second water outlet (7) are connected along a second water flow direction; A transmission shaft, wherein the transmission shaft is connected with a first impeller (8), a second impeller (9) and a third impeller (10), wherein the first impeller (8) is located in the horizontal power input chamber (11), and the second impeller (9) is located in the vertical power input chamber (12), the first impeller (8) is used to convert the kinetic energy of the liquid into mechanical energy for the rotation of the transmission shaft, and the second impeller (9) is used to convert the gravitational potential energy of the liquid into mechanical energy for the rotation of the transmission shaft, and the first impeller (8) and the second impeller (9) drive the transmission shaft to rotate in the same direction; the third impeller (10) is located in the pumping chamber (13), and the third impeller (10) is used to pump liquid.

2. A coaxial direct-connected water turbine pump according to claim 1, characterized in that: The second impeller (9) and the third impeller (10) are spiral structures.

3. The coaxial direct-connected water turbine pump according to claim 1, characterized in that: The first water inlet (4) is provided with a filter screen (14).

4. A coaxial direct-connected water turbine pump according to claim 3, characterized in that: The filter screen (14) has a conical structure.

5. The coaxial direct-connected water turbine pump according to claim 1, characterized in that: The second partition plate (3) is provided with a first liquid through hole (15), the first liquid through hole (15) extends in a spiral line along the horizontal direction, and the diameter of the first liquid through hole (15) gradually increases.

6. The coaxial direct-connected water turbine pump according to claim 1, characterized in that: The first water inlet (4) is connected to the horizontal power input chamber (11) via a flow guide tube (16), and the direction of the flow guide tube (16) is tangential to the horizontal power input chamber (11).

7. The coaxial direct-connected water turbine pump according to claim 1, characterized in that: A plurality of the second water inlets (6) are provided, and the plurality of the second water inlets (6) are distributed at intervals around the circumference of the pumping chamber (13).

8. The coaxial direct-connected water turbine pump according to claim 1, characterized in that: The second water outlet (7) is provided with a one-way valve, and the one-way valve is used to prevent liquid from entering the water pumping chamber (13).

9. The coaxial direct-connected water turbine pump according to claim 1, characterized in that: A plurality of support rods (18) are provided in the housing (1), and the support rods (18) are provided with connection holes. The connection holes are used to install bearings (17), and the transmission shaft is pivotally connected to the bearings (17).

10. The coaxial direct-connected water turbine pump according to claim 1, characterized in that: The shell (1) is a component made of acrylic material.

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