A water conservancy project gate

Abstract

The utility model discloses a water conservancy project gate belongs to water conservancy engineering technical field, including valve stem and gate and gate seat, the top center position of gate seat is provided with threaded hole, and valve stem is connected with threaded hole screw thread, and the top of valve stem is fixedly connected with hand wheel, the utility model discloses can have water flow dispersion structure, so water flow impact force no longer concentrates, avoids local stress too big, avoids gate vibration, deformation damage, avoids conventional single bearing structure, so will not local stress concentration, also can not cause bearing wear and gate deviation, also can not reduce the stability of gate, can also effectively disperse water flow impact force, has eliminated the eddy current and vibration problem, has improved the service life of gate.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and in particular to a water conservancy engineering gate. Background Technology

[0002] Water conservancy projects are engineering projects constructed to eliminate water hazards and develop and utilize water resources. They are categorized by their service targets, including flood control projects, farmland irrigation projects, hydropower projects, waterway and port projects, water supply and drainage projects, environmental water conservancy projects, and coastal reclamation projects. Water conservancy projects that simultaneously serve multiple objectives such as flood control, water supply, irrigation, and power generation are called comprehensive utilization water conservancy projects. In water conservancy projects, gates are key devices for controlling water flow and are widely used in reservoirs, rivers, and irrigation systems. However, existing water conservancy gate designs often suffer from numerous problems in practical applications. For example, current gate designs typically lack water flow dispersion structures, leading to concentrated water flow impact forces and excessive local stress. Therefore, the impact of water flow on the gate can cause vibration, deformation, or even damage, ultimately reducing the gate's service life.

[0003] In addition, existing gate bearings typically use a single-row structure, which cannot effectively distribute rotational torsional loads and axial thrust, easily leading to local stress concentration, which in turn causes bearing wear and gate misalignment, reducing the stability of the gate.

[0004] Finally, existing diversion designs cannot effectively disperse the impact force of water flow, leading to eddies and vibration problems, thus reducing the service life of the gates. In conclusion, existing hydraulic engineering gates are insufficient to meet the requirements of hydraulic engineering for high efficiency, stability, and durability.

[0005] To overcome the above-mentioned shortcomings, the inventor invented a sluice gate for water conservancy projects. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a hydraulic engineering gate with a water flow dispersion structure. This prevents the water flow impact force from concentrating, avoids excessive local stress, and prevents gate vibration, deformation, and damage. It also avoids the conventional single-row bearing structure, thus preventing local stress concentration, bearing wear, gate offset, and reduced gate stability. Furthermore, it effectively disperses the water flow impact force, eliminates eddies and vibration problems, and improves the service life of the gate.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A gate for a water conservancy project includes a valve stem, a gate, and a gate seat. A threaded through hole is provided at the center of the top of the gate seat. The valve stem is threadedly connected to the threaded through hole, and the top of the valve stem is fixedly connected to a handwheel. The front and back of the gate are each provided with a triangular bevel with a central protrusion. A fixed crossbar is provided at the top of the gate, and a stabilizing through hole is provided at the center of the fixed crossbar. The inner surface of the stabilizing through hole is fixedly connected to the outer ring of a first bearing. The inner ring of the first bearing is fixedly connected to the middle section of the valve stem. The bottom of the valve stem is fixedly connected to the inner ring of a second bearing, and the outer ring of the second bearing is fixedly connected to the gate.

[0009] As a further implementation, both the first and second bearings are double-row angular contact ball bearings.

[0010] As a further implementation, the center points of the first and second bearings are on the same vertical plane.

[0011] As a further implementation, the two ends of the fixed crossbar are connected to the top of the gate respectively.

[0012] As a further implementation, the connecting crossbar is set horizontally, and a layer of polyurethane is applied to the surface of the connecting crossbar.

[0013] As a further implementation, a flow guide channel is provided on the water-facing side of the gate, extending from the middle to both sides of the gate.

[0014] As a further implementation, the guide channel is at a 45-degree angle to the horizontal plane.

[0015] As a further implementation method, the gate is molded as a single piece.

[0016] The beneficial effects of this utility model are as follows:

[0017] This utility model features a triangular bevel with a raised center on both the front and back of the gate. This design effectively guides the direction of water flow and disperses the water flow, thus dispersing the impact force of the water flow, avoiding local stress concentration, reducing the risk of eddies and gate vibration, and improving the service life of the gate.

[0018] This invention utilizes double-row angular contact ball bearings for both the first and second bearings, departing from the traditional single-row bearing structure. The first bearing, through its two rows of rolling elements, evenly distributes the rotational and torsional loads of the valve stem, preventing localized stress concentration and thus avoiding gate vibration and deformation caused by impact forces. The second bearing withstands the axial thrust generated by the water flow impact at the bottom of the gate. Furthermore, the double-row angular contact ball bearing structure of the second bearing provides bidirectional limiting, preventing gate misalignment or vibration due to impact forces. This eliminates bearing wear and gate misalignment, improving gate stability.

[0019] The gate's upstream face is equipped with guide channels that extend radially from the center to both sides, dividing the oncoming water flow into multiple streams and reducing the concentrated impact force on the gate's center. The guide channels are inclined at a 45-degree angle to the horizontal plane, guiding the water flow to diffuse to both sides, creating a smooth laminar flow and reducing eddy currents. A polyurethane coating with a low elastic modulus is applied to the surface of the fixed crossbar, absorbing the vibration energy generated by the water flow impact and reducing the fatigue risk of the fixed crossbar. Simultaneously, the low coefficient of friction of the polyurethane surface reduces frictional losses between the fixed crossbar and the guide rails or water flow, and its hydrophobic properties prevent the adhesion of algae, shellfish, and other organisms, reducing maintenance frequency and extending the gate's service life. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 This is a top view of the present invention with the handwheel removed;

[0024] Among them, 1. valve stem; 2. gate; 3. gate seat; 4. threaded through hole; 5. handwheel; 6. fixed crossbar; 7. stabilizing through hole; 8. first bearing; 9. second bearing; 10. guide groove. Detailed Implementation

[0025] Example:

[0026] This embodiment provides a gate for a water conservancy project, such as... Figure 1-3As shown, the device includes a valve stem 1, a gate 2, and a gate seat 3. A threaded through hole 4 is provided at the top center of the gate seat 3. The valve stem 1 is threadedly connected to the threaded through hole 4, which provides a vertical movement track for the valve stem 1, ensuring the stability of the gate 2's lifting and lowering. The top of the valve stem 1 is fixedly connected to a handwheel 5, which is a device for manually operating the gate 2. Rotating the handwheel 5 drives the valve stem 1 to rotate, thereby opening or closing the gate 2. The valve stem 1 converts the rotational movement of the handwheel 5 into the vertical lifting and lowering of the gate 2. The valve stem 1 is the core component of the entire device, controlling the opening and closing of the gate 2 through rotation or vertical movement. When the valve stem 1 rotates, it drives the gate 2 to move up and down, thereby controlling the water flow. Both the front and back of the gate 2 are provided with triangular bevels with raised centers. The triangular bevels guide the direction of water flow and disperse the impact force of water flow. This design reduces local stress concentration. The triangular bevels are used to reduce the impact force of water flow on the gate 2. The triangular bevels can guide the water flow along the surface of the gate 2, reducing the risk of eddies and vibration of the gate 2. A fixed crossbar 6 is provided at the top of the gate 2. A stabilizing through hole 7 is provided in the center of the fixed crossbar 6. The inner surface of the stabilizing through hole 7 is fixedly connected to the outer ring of the first bearing 8. The inner ring of the first bearing 8 is fixedly connected to the middle section of the valve stem 1. The bottom of the valve stem 1 is fixedly connected to the inner ring of the second bearing 9. The outer ring of the second bearing 9 is fixedly connected to the gate 2.

[0027] Both the first bearing 8 and the second bearing 9 are double-row angular contact ball bearings. The first bearing 8 distributes the rotational torsional load of the valve stem 1 evenly through two rows of rolling elements, avoiding local stress concentration and thus preventing the impact force from damaging the gate 2. The second bearing 9 bears the axial thrust generated by the water flow impact at the bottom of the gate 2, and the second bearing 9 achieves bidirectional limiting through the double-row structure, preventing the gate 2 from shifting due to impact force or vibrating due to impact force.

[0028] The center points of the first bearing 8 and the second bearing 9 are on the same vertical plane, ensuring that the valve stem 1 always coincides with the axis of motion of the gate 2 during the lifting and lowering process, thus eliminating asymmetrical friction caused by axis offset.

[0029] The two ends of the fixed crossbar 6 are connected to the top of the gate 2 respectively. When the gate 2 is subjected to water flow pressure, the fixed crossbar 6 evenly distributes the concentrated load at the top to the main structure of the gate 2 on both sides. This disperses the water pressure into two components through the fixed crossbar 6, reducing the risk of stress concentration and the negative impact of water flow on the gate 2.

[0030] The fixed crossbar 6 is horizontally positioned, and its surface is coated with a layer of polyurethane. This design allows the fixed crossbar 6 to act as a rigid support frame, evenly distributing the water flow impact force and its own weight load borne by the gate 2 to the main structure of the gate 2 on both sides. The polyurethane has a low elastic modulus (approximately 3-30 MPa), and its coating can absorb the vibration energy generated by the water flow impact, reducing the fatigue risk of the fixed crossbar 6. The polyurethane surface has a low coefficient of friction (specifically 0.2-0.4), which reduces frictional losses between the fixed crossbar 6 and the guide rail or water flow. Simultaneously, its hydrophobicity prevents the adhesion of algae, shellfish, and other organisms, reducing maintenance frequency.

[0031] The water-facing side of the gate 2 is provided with a guide channel 10. The guide channel 10 extends from the middle to both sides of the gate 2. The radial layout of the guide channel 10 extending from the center of the gate 2 to both sides can divide the water flow into multiple branches, reducing the concentrated impact force of the water flow on the center of the gate 2.

[0032] The guide channel 10 is at a 45-degree angle to the horizontal plane. This 45-degree inclination guides the water flow to diffuse to both sides along the guide channel 10, forming a smooth laminar flow state and reducing eddy current generation. Simultaneously, the laminar flow state also mitigates the impact of the water flow on the upstream surface of the gate 2, reducing the vibration of the gate 2. The gate 2 is integrally formed. Through the above design, the handwheel 5 can be used to close the gate 2 and the gate seat 3, completely blocking the water flow.

[0033] The application process of the hydraulic engineering gate of this utility model is as follows:

[0034] (1) Rotate handwheel 5: Handwheel 5 is a device for manually operating gate 2. By rotating handwheel 5, valve stem 1 can be rotated, thereby realizing the opening or closing of gate 2.

[0035] (2) Controlling water flow: By rotating the handwheel 5, the operator can manually control the raising and lowering of the gate 2, thereby adjusting the size of the water flow or completely shutting off the water flow.

[0036] (3) Regular inspection and maintenance: However, in order to ensure the normal operation of the gate 2, the operator needs to regularly check the wear of components such as handwheel 5, valve stem 1, first bearing 8 and second bearing 9, and perform necessary maintenance (such as lubrication and cleaning).

[0037] The length, thickness, and height of the lines of valve stem 1, gate 2, gate seat 3, and handwheel 5 in the attached diagram are for illustrative purposes only, and those skilled in the art can make adaptive adjustments according to actual usage.

[0038] The length, thickness, and number of the lines of the guide groove 10 in the attached figure are for illustrative purposes only, and those skilled in the art can make adaptive adjustments according to actual use.

[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A gate for a hydraulic engineering project, comprising a valve stem, a gate valve, and a gate seat; characterized in that, The gate seat has a threaded through hole at the top center, the valve stem is threaded to the threaded through hole, and the top of the valve stem is fixedly connected to the handwheel. The front and back of the gate are provided with triangular bevels with a raised center. The top of the gate is provided with a fixed crossbar, and the center of the fixed crossbar is provided with a stabilizing through hole. The inner surface of the stabilizing through hole is fixedly connected to the outer ring of the first bearing. The inner ring of the first bearing is fixedly connected to the middle section of the valve stem. The bottom of the valve stem is fixedly connected to the inner ring of the second bearing. The outer ring of the second bearing is fixedly connected to the gate.

2. The sluice gate of the water conservancy project according to claim 1, characterized in that, Both the first and second bearings are double-row angular contact ball bearings.

3. The sluice gate of the water conservancy project according to claim 2, characterized in that, The center points of the first bearing and the second bearing are on the same vertical plane.

4. The sluice gate of the water conservancy project according to claim 1, characterized in that, The two ends of the fixed crossbar are connected to the top of the gate respectively.

5. The sluice gate of a water conservancy project according to claim 4, characterized in that, The connecting crossbar is set horizontally, and a layer of polyurethane is applied to the surface of the connecting crossbar.

6. The sluice gate of the water conservancy project according to claim 1, characterized in that, The gate's water-facing side is equipped with a flow guide channel, which extends from the center to both sides of the gate.

7. The sluice gate of a water conservancy project according to claim 6, characterized in that, The guide channel is at a 45-degree angle to the horizontal plane.

8. The sluice gate of a water conservancy project according to claim 1, characterized in that, The gate is molded as a single piece.

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