Water conveying pipeline capable of automatically exhausting air and keeping flow
By combining the exhaust mechanism and the pier in the water supply pipeline, using the air collection chamber, float ball and anti-overflow device, the problem of incomplete elimination of airbags in the gravity flow water supply pipeline is solved, and efficient exhaust and anti-overflow are achieved. Reduces cost and maintenance difficulties.
Patent Information
- Application Number
- CN202421083194.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-17
AI Technical Summary
In the cross-basin water diversion project, the method of eliminating airbases in gravity flow water transmission pipelines is not effective enough, resulting in problems of blockage and high cost.
A water supply pipeline that automatically exhausts and maintains flow is designed, combining the exhaust mechanism and the pier, adopts a gas collection cavity, float ball and anti-overflow device to gather gas through the gas collection pipe and return pipe and discharge it through the exhaust pipe to prevent The water overflow device includes a water loss sensor, a control valve, a water-expanding rubber block and a water-gas conversion chamber to ensure efficient exhaust and prevent overflow.
It improves exhaust efficiency and reliability, reduces construction and maintenance costs, ensures stability of water flow, and prevents water flow from overflowing.
Smart Images
Figure CN222297315U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water supply network optimization models, in particular to a water supply pipeline with automatic exhaust and flow preservation. Background Art
[0002] The objective situation of uneven distribution of water resources and the imbalance between water resources and water demand forces water transfer to become inevitable; reallocating water resources by building water pipelines and adopting inter-basin water transfer methods is an important means to alleviate or even solve the needs of water-scarce areas.
[0003] In inter-basin water transfer projects, gravity flow water transfer is a common water transfer method. In the process of water transfer through pressurized pipes using gravity, some air is dissolved in the water. During the continuous movement of the water flow, gas is precipitated and attached to the pipe wall to form air pockets. The air pockets attached to the pipe wall affect the water transfer efficiency to varying degrees.
[0004] At present, the method of removing gas from the pipe is to set an exhaust valve at the high point of the pipeline or based on experience, specifically to build a valve well and set up an inspection port. This method not only has a large amount of engineering, but also is inconvenient for maintenance; if in a long-distance low-pressure water pipeline, the flow rate is small, the slope of the pipeline is a gentle slope, and the air pockets are irregularly distributed along the way, the exhaust valve cannot effectively remove the gas in the pipeline, and the air pockets gather and cause blockage, preventing the water from continuing to flow. The exhaust reliability is poor, the cost is high, and the maintenance is difficult. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a water pipeline with automatic exhaust and flow preservation, which can not only improve the exhaust efficiency and reliability of the water pipeline and ensure the water flow rate, but also combine the exhaust mechanism with the anchor pier to reduce the construction cost.
[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a water supply pipeline with automatic exhaust and flow preservation, including a water supply pipeline, an exhaust mechanism and a anchor pier, the exhaust mechanism and the anchor pier are arranged in a one-to-one correspondence; the exhaust mechanism includes an air collecting pipe and a return pipe connected to different positions of the water supply pipeline, the air collecting pipe and the return pipe converge in an air collecting cavity, the top of the air collecting cavity is connected to an exhaust pipe, an anti-overflow device is arranged on the exhaust pipe, the upper end of the exhaust pipe passes through the upper surface of the anchor pier and bends downward to form an inverted U-shaped structure; the air collecting cavity is filled with a float, the top contour of the air collecting cavity is hemispherical, the radius of the hemisphere is equal to the radius of the float, and the inner surface of the air collecting cavity is covered with a rubber water-stop layer.
[0007] Furthermore, the anti-overflow device includes a water loss sensor and a control valve installed in the exhaust pipe, the water loss sensor and the control valve work in conjunction through a controller, the water loss sensor and the control valve are respectively connected to the input end and output end of the controller through a signal line, and a wire groove is provided outside the signal line.
[0008] Furthermore, the anti-overflow device includes a water-swellable rubber block installed on the inner wall of the exhaust pipe, and an air passage is opened through the water-swellable rubber block. The shape of the air passage is honeycomb, cross or straight.
[0009] Furthermore, the anti-overflow device includes a water-gas conversion chamber arranged on the exhaust pipe and a secondary float filled in the water-gas switching chamber. The exhaust pipe is divided into a lower exhaust pipe and an upper exhaust pipe. The water-gas conversion chamber includes a front chamber and a rear chamber arranged side by side and connected by a transverse channel. The lower exhaust pipe and the upper exhaust pipe are respectively connected to the bottom of the front chamber and the top of the rear chamber. The secondary float is located in the rear chamber. The transverse channel between the front chamber and the rear chamber is smaller than the secondary float. The bottom of the rear chamber sinks to form a sinking bin with a non-spherical structure. The top of the rear chamber is hemispherical and adapted for the secondary float. When the secondary float is located at the bottom of the sinking bin, the top of the secondary float is lower than the transverse channel.
[0010] Furthermore, the anchor pier is integrally cast to fix the water pipeline and the exhaust mechanism together.
[0011] The beneficial effects of adopting the above technical solution are: 1. The anchor pier of the utility model is constructed in combination with the exhaust mechanism, which saves the cost of construction, maintenance and replacement of accessories; 2. The exhaust mechanism has high exhaust efficiency and strong reliability; 3. The anti-overflow device can prevent water in the water pipeline from overflowing from the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0013] Figure 1 It is a sectional view of the utility model after assembly.
[0014] Figure 2 It is an enlarged view of the matching relationship between the air collecting chamber and the floating ball of the utility model.
[0015] Figure 3 It is a schematic structural diagram of the anti-overflow device of the first embodiment of the utility model.
[0016] Figure 4 It is a schematic diagram of the structure of the anti-overflow device of the second embodiment of the utility model (showing three airway shapes).
[0017] Figure 5 It is a schematic structural diagram of the anti-overflow device of the third embodiment of the utility model.
[0018] In the figure: 1, water delivery pipeline 2, exhaust mechanism 3, ballast 7, front chamber 8, rear chamber 9, transverse channel 10, secondary float 11, sinking bin 21, gas collecting pipe 22, reflux pipe 23, gas collecting cavity 24, exhaust pipe 25, anti-overflow device 28, float 251, water loss sensor 252, control valve 253, controller 254, signal line 255, wire trough 256, water-swellable rubber block 257, airway 241, lower exhaust pipe 242, upper exhaust pipe. DETAILED DESCRIPTION
[0019] Also see the attached Figure 1-5 The structure of the utility model includes a water pipeline 1, an exhaust mechanism 2 connected to the top of the water pipeline 1, and a pier 3 for fixing the water pipeline 1. The exhaust mechanism 2 and the pier 3 are arranged in a one-to-one correspondence.
[0020] exist Figure 1 In the figure, the exhaust mechanism 2 includes an air collecting pipe 21 and a return pipe 22 connected at different positions of the water supply pipeline 1, the air collecting pipe 21 is located upstream of the return pipe 22, the air collecting pipe 21 and the return pipe 22 converge in an air collecting cavity 23, the top of the air collecting cavity 23 is connected with an exhaust pipe 24, the exhaust pipe 24 is provided with an anti-overflow device 25, the upper end of the exhaust pipe 24 passes through the upper surface of the anchor 3 and bends downward to form an inverted U-shaped structure; the air collecting cavity 23 is filled with a float 28, the cross-section of the air collecting cavity 23 at any height is circular, and the inner surface of the air collecting cavity 23 is covered with a rubber water-stopping layer. Due to the different densities of gas and water, most of the gas is located at the top of the water supply pipeline 1, and can enter the gas collecting chamber 23 through the gas collecting pipe 21, and then be discharged through the exhaust pipe 24; the water entering the gas collecting chamber 23 with the gas flows back to the water supply pipeline 1 from the return pipe 22; when the water level in the gas collecting chamber 23 is too high, the float 28 floats up to block the exhaust pipe 24 to prevent water from entering the exhaust pipe 24; when the float 28 is damaged, the anti-overflow device 25 automatically closes when it encounters water, thereby achieving the effect of secondary waterproof overflow drain pipe 24.
[0021] exist Figure 2 In the embodiment, the top profile of the gas collecting cavity 23 is hemispherical, and the radius of the hemispherical shape is equal to the radius of the floating ball 28.
[0022] Figure 3 In the first embodiment shown, the anti-overflow device 25 includes a water loss sensor 251 and a control valve 252 installed in the exhaust pipe 24. The water loss sensor 251 and the control valve 252 work in conjunction with each other through a controller 253. The water loss sensor 251 and the control valve 252 are respectively connected to the input end and the output end of the controller 253 through a signal line 254. This embodiment is suitable for a location where electricity is convenient to obtain. The water loss sensor 251 and the control valve 252 are sensitive to response, and a flow sensor can be installed as needed to detect the change process of exhaust gas.
[0023] Figure 4 In the second embodiment shown, the anti-overflow device 25 includes a water-swelling rubber block 256 installed on the inner wall of the exhaust pipe 24, and an air passage 257 is formed through the water-swelling rubber block 256. The shape of the air passage 257 is honeycomb, cross or straight. It is suitable for locations where it is inconvenient to get electricity. The water-swelling rubber block 256 will automatically expand when it comes into contact with water, and the air passage 257 will be closed. However, the slow expansion process may cause the blocking reaction to be not sensitive enough. The advantages are low cost and no reliance on electricity.
[0024] Figure 5 In the third embodiment shown, the anti-overflow device 25 includes a water-gas conversion chamber arranged on the exhaust pipe 24 and a secondary float 10 filled in the water-gas switching chamber. The exhaust pipe 24 is divided into a lower exhaust pipe 241 and an upper exhaust pipe 242. The water-gas conversion chamber includes a front chamber 7 and a rear chamber 8 arranged side by side and connected by a transverse channel 9. The lower exhaust pipe 241 and the upper exhaust pipe 242 are respectively connected to the bottom of the front chamber 7 and the top of the rear chamber 8. The secondary float 10 is located in the rear chamber 8. The channel 9 between the front chamber 7 and the rear chamber 8 is smaller than the secondary float 10. The bottom of the rear chamber 8 is sunken to form a sinking bin 11 with a non-spherical structure. The top of the rear chamber 8 is hemispherical and adapted to the secondary float 10. When the secondary float 10 is located at the bottom of the sinking bin 11, the top of the secondary float 10 is lower than the transverse channel 9. When there is no water in the exhaust pipe 24, the secondary float 10 falls into the sinking bin 11, and the gas can pass smoothly through the water-gas conversion chamber; when water in the exhaust pipe 24, the secondary float 10 floats up due to buoyancy, and blocks the rear chamber 8 and the upper exhaust pipe 242 to avoid overflow. Because the sinking bin 11 is a non-spherical structure, water will inevitably enter the bottom of the secondary float 10, avoiding the situation where the secondary float 10 and the sinking bin 11 are too close to each other and cannot float. This embodiment not only does not require power supply, but also has a sensitive response. The manufacturing standard of the secondary float 10 refers to the manufacturing standard of the float 28.
[0025] The above three embodiments each have their own advantages and disadvantages, and can be flexibly selected according to the conditions of the construction site during construction.
[0026] The above description is only proposed as an implementable technical solution of the present invention, and is not intended to be a single limitation on the technical solution itself.
Claims
1. A water pipeline with automatic exhaust and flow preservation, characterized in that: It includes a water supply pipeline, an exhaust mechanism and a ballast pier, and the exhaust mechanism and the ballast pier are arranged in a one-to-one correspondence; the exhaust mechanism includes an air collecting pipe and a return pipe connected to different positions of the water supply pipeline, the air collecting pipe and the return pipe converge in an air collecting chamber, the top of the air collecting chamber is connected to an exhaust pipe, an anti-overflow device is arranged on the exhaust pipe, the upper end of the exhaust pipe passes through the upper surface of the ballast pier and bends downward to form an inverted U-shaped structure; a floating ball is filled in the air collecting chamber, the top contour of the air collecting chamber is hemispherical, the radius of the hemisphere is equal to the radius of the floating ball, and the inner surface of the air collecting chamber is covered with a rubber water-stop layer.
2. The automatic exhaust and flow-preserving water pipeline according to claim 1 is characterized in that: The anti-overflow device includes a water loss sensor and a control valve installed in the exhaust pipe. The water loss sensor and the control valve work in conjunction with each other through a controller. The water loss sensor and the control valve are respectively connected to the input end and the output end of the controller through a signal line, and a wire groove is arranged outside the signal line.
3. The automatic exhaust and flow-preserving water pipeline according to claim 1 is characterized in that: The anti-overflow device comprises a water-swellable rubber block installed on the inner wall of the exhaust pipe, and an air passage is provided through the water-swellable rubber block. The shape of the air passage is honeycomb, cross or straight.
4. The automatic exhaust and flow-preserving water pipeline according to claim 1 is characterized in that: The anti-overflow device includes a water-gas conversion chamber arranged on the exhaust pipe and a secondary float filled in the water-gas conversion chamber. The exhaust pipe is divided into a lower exhaust pipe and an upper exhaust pipe. The water-gas conversion chamber includes a front chamber and a rear chamber arranged side by side and connected by a transverse channel. The lower exhaust pipe and the upper exhaust pipe are respectively connected to the bottom of the front chamber and the top of the rear chamber. The secondary float is located in the rear chamber. The transverse channel between the front chamber and the rear chamber is smaller than the secondary float. The bottom of the rear chamber sinks to form a sinking bin with a non-spherical structure. The top of the rear chamber is hemispherical to fit the secondary float. When the secondary float is located at the bottom of the sinking bin, the top of the secondary float is lower than the transverse channel.
5. The automatic exhaust and flow-preserving water pipeline according to claim 1 is characterized in that: The anchor pier is integrally cast to fix the water delivery pipeline and the exhaust mechanism together.