Layered water taking device for sandy reservoir in cold region

Abstract

The utility model provides a stratified water taking device for a sandy reservoir in a cold region, which comprises a water inlet flow channel, a siphon elbow and a water drainage flow channel, the water inlet flow channel is arranged below the water level of the reservoir, the water drainage flow channel is arranged along an inclined dam surface on a dam, a water outlet of the water drainage flow channel is communicated with a downstream river channel, and the siphon elbow is arranged at the top of the dam. One end of the siphon elbow is communicated with the water inlet runner, the other end of the siphon elbow is communicated with the water outlet runner, a vacuum system for adjusting the pressure in the siphon elbow is arranged on the siphon elbow, vibration reduction systems are arranged on the water inlet runner and the water outlet runner, and a plurality of circulation guide plates are arranged at an inlet of the water inlet runner. The water taking device is scientific and reasonable in structural design, large in water taking amount, stable and controllable in siphon effect, good in vibration reduction effect, not prone to damage, safe, reliable, easy and convenient to install, good in using effect and capable of being used and popularized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a water taking device, concretely relates to a layered water taking device for cold region high-sand reservoir. BACKGROUND

[0002] Water temperature is an important physical characteristic index and driving factor for measuring water ecological change, and the reservoir storage suppresses the vertical exchange of water body, and the water temperature in the reservoir appears thermal stratification phenomenon, thereby causing the change of dissolved oxygen and each organic salt, and leading to the deterioration of reservoir environment.

[0003] The cold region high-sand reservoir in the Yellow River basin of China is more complex, and its characteristics are that the vertical distribution of water temperature is greatly different in summer, the surface ice is serious in the reservoir area in winter, the water temperature distribution under the ice is relatively close and the difference is small, the suspended sand concentration in the reservoir area is large, and the siltation is serious.

[0004] In order to alleviate the adverse effects of water temperature stratification, the layered water taking technology has been widely applied at home and abroad. The prior art adopts a simple siphon device to take water, the water taking amount of the device is small, the siltation phenomenon of the pipe is more prominent, and the layered water taking effect is not ideal. Therefore, it is necessary to improve and design a water taking device with higher water taking efficiency and safety and reliability. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problem in the prior art, provides a layered water taking device for cold region high-sand reservoir, the device has the advantages of scientific and reasonable structure design, large water taking amount, stable and controllable siphon effect, good damping effect, not easy to be damaged, safety and reliability, simple installation, good use effect, and can be popularized and used.

[0006] To solve the above technical problems, the utility model adopts the technical scheme of a layered water taking device for cold region high-sand reservoir, characterized by comprising a water inlet channel, a siphon elbow pipe and a drainage channel, the water inlet channel is arranged below the horizontal plane of the reservoir, the drainage channel is arranged along the inclined dam surface of the dam, the water outlet of the drainage channel is communicated with the downstream river channel, the siphon elbow pipe is arranged at the top of the dam, one end of the siphon elbow pipe is communicated with the water inlet channel, the other end of the siphon elbow pipe is communicated with the drainage channel, a vacuum system for adjusting the pressure in the siphon elbow pipe is arranged on the siphon elbow pipe, a damping system is equidistantly arranged on the water inlet channel, the siphon elbow pipe and the drainage channel, and a plurality of circulating guide plates are arranged at the inlet of the water inlet channel.

[0007] Preferably, the water inlet channel is trumpet-shaped, the trumpet-shaped water inlet channel can expand the water inlet area, the large end of the water inlet channel is a water inlet, and six ring flow guide plates are connected in an annular array at the water inlet of the bottom of the water inlet channel, the cross section of the ring flow guide plate is trapezoidal, an included angle is arranged between the ring flow guide plate and the water inlet channel, water flow enters the water inlet channel due to the water level difference between the upstream and downstream, the flow line is deflected under the action of the ring flow guide plate, and gradually forms a spiral flow flow state, the number of the ring flow guide plates is six and the included angle is 30 degrees according to the hydraulic model experiment.

[0008] Preferably, the two ends of the siphon bend are connected with the water inlet channel and the water outlet channel through flange joints, the vacuum system comprises a vacuum pump, an exhaust pipe and an exhaust valve, the air outlet of the vacuum pump is communicated with the upper part of the side wall of the siphon bend, the air outlet of the vacuum pump is connected with the exhaust pipe, and the exhaust valve is arranged on the exhaust pipe.

[0009] Preferably, the damping system comprises a cover plate, an outer cylinder, vertical springs, horizontal springs, longitudinal springs and a protection ring, the outer cylinder is fixed on the dam through bolts, two ear plates are symmetrically connected on the cover plate, the inner wall of the outer cylinder is connected with the two ear plates in the up-down direction through two vertical springs, the inner wall of the outer cylinder is connected with the ear plates in the left-right direction through horizontal springs, the inner wall of the outer cylinder is connected with the ear plates in the front-rear direction through longitudinal springs, the protection ring is fixedly connected on the cover plate, and the water inlet channel, the siphon bend or the water outlet channel penetrates through the protection ring.

[0010] The vibration is buffered and weakened through the springs in three directions, the vertical springs mainly weaken the longitudinal displacement caused by the water level rising and falling of the reservoir, and the horizontal springs and the longitudinal springs are mainly used for weakening the vibration caused by complex hydraulic phenomena such as ice impact, inflow in the reservoir area and transverse ring flow. The vertical springs, the horizontal springs and the longitudinal springs are all rubber springs.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1、 the utility model discloses the front end of water inlet channel is set to trumpet shape, expands the water area, and sets up cyclone guide plate simultaneously, makes water flow have tangential velocity at the import under the action of the guide plate, and water flow in the middle of pipe produces low pressure area, is favorable to the water flow in the reservoir area and enters the water inlet, thereby obtains greater water flow, realizes better temperature compensation effect to downstream riverway.

[0013] 2、 the utility model discloses setting up cyclone guide plate, makes water flow state in pipe change into spiral flow, enhances water flow turbulent effect, increases the shear stress between water flow and wall surface simultaneously, drags the silt that is easy to deposit in siphon bend and makes it " spin and float in the main flow, effectively solves the pipe siltation problem in traditional siphon water taking of many sand reservoir.

[0014] 3. The utility model discloses set up damping system, set up rubber spring in three directions, reduced the vibration problem of pipeline system because of the water level of reservoir, winter ice and snow impact etc.

[0015] The utility model will be further explained in detail below in connection with the drawings and examples. DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model.

[0017] Figure 2 It is the structure schematic diagram of water inlet channel entrance in the utility model.

[0018] Figure 3 It is the three -dimensional structure schematic diagram of water inlet channel in the utility model.

[0019] Figure 4 It is the structure schematic diagram of vacuum system in the utility model.

[0020] Figure 5 It is the first visual angle cross section structure schematic diagram of damping system in the utility model.

[0021] Figure 6 It is the second visual angle cross section structure schematic diagram of damping system in the utility model.

[0022] Mark explanation:

[0023] 1 - water inlet channel; 2 - siphon bend;

[0024] 4 - vacuum system; 5 - damping system; 6 - circulation guide plate;

[0025] 401 - vacuum pump; 402 - exhaust pipe; 403 - exhaust valve;

[0026] 501 - cover plate; 502 - outer tube; 503 - vertical spring;

[0027] 504 - horizontal spring; 505 - longitudinal spring; 506 - retainer ring. DETAILED DESCRIPTION

[0028] As Figures 1 to 6As shown, the utility model of water inlet channel 1, siphon bend 2 and drainage channel 3, water inlet channel 1 is arranged below the water level of reservoir, drainage channel 3 is along the dam face of dam up inclination and is arranged, the water outlet of drainage channel 3 is connected with downstream river channel, siphon bend 2 is arranged at the top of dam, one end of siphon bend 2 is connected with water inlet channel 1, the other end of siphon bend 2 is connected with drainage channel 3, vacuum system 4 for adjusting the pressure in siphon bend 2 is arranged on siphon bend 2, damping system 5 is arranged on water inlet channel 1 and drainage channel 3, and a plurality of circulating guide plates 6 are arranged at the inlet of water inlet channel 1.

[0029] In the embodiment, the water inlet channel 1 is trumpet-shaped, the trumpet-shaped water inlet channel 1 can expand the water inlet area, the large opening of the water inlet channel 1 is the water inlet, and the bottom water inlet of the water inlet channel 1 is connected with six circulating guide plates 6 in an annular array. The cross section of the circulating guide plate 6 is trapezoidal, and an included angle of 30° is arranged between the circulating guide plate 6 and the water inlet channel 1. The water flow enters the water inlet channel 1 due to the water level difference between the upstream and downstream, and the flow line is deflected under the action of the circulating guide plate 6, gradually forming a spiral flow flow state. According to the hydraulic model experiment, the number of circulating guide plates 6 is determined to be six, and the included angle is 30°.

[0030] In the embodiment, the two ends of the siphon bend 2 are connected with the water inlet channel 1 and the drainage channel 3 through flange joints. The vacuum system 4 includes a vacuum pump 401, an exhaust pipe 402, and an exhaust valve 403. The air outlet of the vacuum pump 401 is connected with the upper part of the side wall of the siphon bend 2. The air outlet of the vacuum pump 401 is connected with the exhaust pipe 402. The exhaust valve 403 is arranged on the exhaust pipe 402.

[0031] The damping system (5) includes a cover plate (501), an outer cylinder (502), a vertical spring (503), a horizontal spring 504, a longitudinal spring 505, and a guard ring 506. The outer cylinder 502 is fixed on the dam by bolts. Two ear plates are symmetrically connected to the cover plate 501. The inner wall of the outer cylinder 502 is connected to the two ear plates in the vertical direction by two vertical springs 503. The inner wall of the outer cylinder 502 is connected to the ear plates in the horizontal direction by a horizontal spring 504. The inner wall of the outer cylinder 502 is connected to the ear plates in the front-back direction by a longitudinal spring 505. The guard ring 506 is fixedly connected to the cover plate 501. The guard ring 506 passes through the water inlet channel 1, the siphon bend 2, or the drainage channel 3. The vibration is buffered and weakened by the springs in three directions. The vertical spring 503 mainly weakens the longitudinal displacement caused by the water level rise and fall of the reservoir. The horizontal spring 504 and the longitudinal spring 505 are mainly used to weaken the vibration caused by complex hydraulic phenomena such as ice impact, incoming flow in the reservoir area, and horizontal circulation. The vertical spring 503, the horizontal spring 504, and the longitudinal spring 505 are all rubber springs.

[0032] In use, water flow enters the water inlet flow channel 1 due to the water level difference between upstream and downstream, and the flow line deflects under the action of the circulating guide plate 6, gradually forming a spiral flow flow state, enhancing the water flow turbulence effect, and increasing the shear stress between the water flow and the wall, dragging the sediment deposited at the bottom of the siphon bend to "spin and float" in the main flow, keeping the water flow unobstructed, and the water outlet flow channel 3 conveying the water flow to the downstream river channel power station tail water tunnel. During water intake operation, the vertical spring 503 can reduce the longitudinal displacement caused by the rise and fall of the reservoir water level, and the transverse spring 504 and the longitudinal spring 505 can reduce the vibration caused by complex hydraulic phenomena such as ice impact, incoming flow in the reservoir area, and transverse circulation, ensuring the safety of the overall device and prolonging the service life.

[0033] The above is only a preferred embodiment of the present application, and does not limit the present application in any way. Any simple modification, change and equivalent change made according to the technical essence of the present application to the above embodiments are still within the protection scope of the technical scheme of the present application.

Claims

1. A layered water taking device for cold region multi-sand reservoir, characterized in that, The system includes an inlet channel (1), a siphon bend (2), and a drainage channel (3). The inlet channel (1) is located below the water level of the reservoir. The drainage channel (3) is laid out along the inclined dam surface. The outlet of the drainage channel (3) is connected to the downstream river channel. The siphon bend (2) is located at the top of the dam. One end of the siphon bend (2) is connected to the inlet channel (1), and the other end of the siphon bend (2) is connected to the drainage channel (3). A vacuum system (4) for adjusting the pressure inside the siphon bend (2) is installed on the siphon bend (2). Multiple vibration damping systems (5) are equidistantly arranged on the inlet channel (1), the siphon bend (2), and the drainage channel (3). Multiple circulating guide plates (6) are installed at the inlet of the inlet channel (1).

2. The layered water intake device for cold region multi-sand reservoir according to claim 1, characterized in that, The water inlet channel (1) is funnel-shaped, and the large opening of the water inlet channel (1) is the water inlet. At the bottom water inlet of the water inlet channel (1), six circulating guide plates (6) are connected in a ring array. The cross-section of the circulating guide plate (6) is trapezoidal, and a 30° angle is set between the circulating guide plate (6) and the water inlet channel (1).

3. The layered water taking device for cold region multi-sand reservoir according to claim 1, characterized in that, Both ends of the siphon bend (2) are connected to the water inlet channel (1) and the drainage channel (3) through flange joints. The vacuum system (4) includes a vacuum pump (401), an exhaust pipe (402) and an exhaust valve (403). The suction port of the vacuum pump (401) is connected to the upper part of the side wall of the siphon bend (2). The exhaust port of the vacuum pump (401) is connected to the exhaust pipe (402). An exhaust valve (403) is provided on the exhaust pipe (402).

4. The layered water intake device for cold region multi-sand reservoir according to claim 1, characterized in that, The vibration damping system (5) includes a cover plate (501), an outer cylinder (502), vertical springs (503), transverse springs (504), longitudinal springs (505), and a retaining ring (506). The outer cylinder (502) is fixed to the dam with bolts. Two ear plates are symmetrically connected to the cover plate (501). The inner wall of the outer cylinder (502) is connected to the two ear plates in the vertical direction by two vertical springs (503). The inner wall of the outer cylinder (502) is connected to the ear plates in the horizontal direction by transverse springs (504). The inner wall of the outer cylinder (502) is connected to the ear plates in the front-back direction by longitudinal springs (505). The retaining ring (506) is fixedly connected to the cover plate (501). The retaining ring (506) passes through an inlet channel (1), a siphon bend (2), or a drainage channel (3).

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