Reservoir reconstruction emptying hole structure

Abstract

The utility model relates to a reservoir reconstruction emptying cavity structure, and relates to the technical field of reservoir reconstruction, the reservoir reconstruction emptying cavity structure comprises a water inlet tower connected with an emptying cavity, the emptying cavity is used for discharging water in the water inlet tower out of a dam body, a sand setting mechanism is arranged in front of the water inlet tower, and the sand setting mechanism comprises a sand setting tank, a water inlet pipe, a sealing cover, a sand collecting tank and a spiral desilting assembly. Water flow in the water inlet pipe flows into the grit chamber in the tangential direction of the grit chamber, so that the water flow rotates in the grit chamber, under the combined action of gravity and centrifugal force, mud and sand impact on the side wall of the grit chamber and flow into the sand collecting chamber along the side wall of the grit chamber, the interior of the sand collecting chamber is subjected to desilting treatment through the spiral desilting assembly, and the desilting efficiency is improved. And finally, the water flow subjected to grit treatment in the grit chamber enters the water inlet tower through the drainage pipe on the sealing cover, the content of the mud and the sand entering the water inlet tower is finally reduced, and the probability of blockage of the emptying hole is further reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of reservoir reconstruction, in particular to a reservoir reconstruction emptying hole structure. BACKGROUND

[0002] The reservoir hub in a water conservancy and hydropower project generally comprises a dam, a water diversion system, a flood discharge system and an emptying system and the like buildings. One of the functions of the emptying system is to empty the reservoir so as to facilitate the maintenance of the hub buildings. After a long period of operation, the emptying system buildings are generally damaged to a certain extent, the use function is affected, and need to be repaired, and for the severely damaged, a new emptying building needs to be constructed.

[0003] The reservoir emptying system updating and reconstruction emptying hole structure disclosed by the Chinese patent with the publication number CN214143599U comprises a water inlet tower, the water inlet tower is connected with an emptying hole, the emptying hole extends to the downstream side of the dam body, a working gate chamber is arranged in the middle part of the emptying hole, the downstream side of the working gate chamber to the water outlet end of the emptying hole is a non-pressure hole section, the end of the non-pressure hole section is provided with a water outlet structure, the non-pressure hole section is the original diversion emptying hole, and the original diversion emptying hole on the upstream side of the working gate chamber is filled with a plugging body. A section from the downstream side of the working gate chamber to the water outlet is a non-pressure hole section, and the non-pressure hole section and the water outlet structure are both original structures; the construction of the new emptying hole is carried out on the basis of the original diversion emptying hole, thereby reducing the engineering quantity and engineering cost.

[0004] However, the water inlet elevation of the water inlet tower is higher than that of the original diversion hole, but since no dredging device is arranged, the emptying hole may be blocked after a long period of operation, thereby finally affecting the normal operation of the reservoir emptying hole. CONTENT OF THE UTILITY MODEL

[0005] In order to reduce the probability of emptying hole blockage, the application provides a reservoir reconstruction emptying hole structure.

[0006] The reservoir reconstruction emptying hole structure provided by the application adopts the following technical scheme:

[0007] A reservoir reconstruction emptying hole structure comprises a water inlet tower, the water inlet tower is connected with an emptying hole, the emptying hole extends to the downstream side of the dam body and is used for discharging water in the water inlet tower out of the dam body, a sand setting mechanism for setting sand in water is arranged in front of the water inlet tower, and the sand setting mechanism comprises:

[0008] A sand setting pool is arranged in the reservoir;

[0009] A water inlet pipe is arranged on the side wall of the sand setting pool, the water inlet pipe flows water in the reservoir into the sand setting pool in a tangent direction and forms a rotating water flow;

[0010] A sealing cover is arranged on the sand trap and seals the top of the sand trap, and a drain pipe is arranged on the sealing cover and used to drain water on the top of the sand trap into the water intake tower.

[0011] A sand collecting pool is arranged at the bottom of the sand trap and used to collect the sediment in the sand trap.

[0012] A spiral dredging assembly is arranged on the dam body and used to dredge the sand collecting pool.

[0013] By adopting the above technical scheme, the water flow in the water inlet pipe flows into the sand trap in the tangential direction of the sand trap, so as to make the water flow rotate in the sand trap. Under the joint action of gravity and centrifugal force, the sediment is impacted on the side wall of the sand trap and flows into the sand collecting pool along the side wall of the sand trap. The sand collecting pool is dredged by the spiral dredging assembly, so as to ensure the collection of the sediment by the sand collecting pool. Finally, the water flow after the sand trap sedimentation treatment enters the water intake tower through the drain pipe on the sealing cover, so as to reduce the sediment content in the water intake tower and reduce the probability of the blowout hole blockage.

[0014] Further, the sand trap comprises:

[0015] A frame body is arranged on the reservoir;

[0016] An upper section is arranged on the frame body and connected with the water inlet pipe, and the upper section is a cylindrical structure;

[0017] A middle section is coaxially arranged below the upper section through a flange and connected with the frame body, and the middle section is a circular truncated cone structure and the diameter of the side close to the upper section is larger than the diameter of the side away from the upper section;

[0018] A lower section is arranged below the middle section through a flange and connected with the frame body, and the lower section is an inverted conical structure and used to collect the sediment and then drain into the sand collecting pool.

[0019] By adopting the above technical scheme, the upper section, the middle section and the lower section are fixedly installed on the frame body, and the adjacent sections are sealingly connected through the flanges. When any one of the upper section, the middle section and the lower section is damaged, the corresponding section can be replaced, so as to realize the maintenance of the sand trap and improve the maintenance efficiency and reduce the maintenance cost of the sand trap.

[0020] Further, the inner side walls of the upper section, the middle section and the lower section are embedded with wear-resistant ceramic lining plates, which are used to improve the wear resistance of the upper section, the middle section and the lower section.

[0021] By adopting the above technical scheme, the wear-resistant ceramic lining plates embedded and installed on the upper section, the middle section and the lower section improve the wear resistance of the inner side walls of the sand trap, so as to reduce the wear frequency of the sand trap.

[0022] Further, the wear-resistant ceramic lining plate is provided with a plurality of V-shaped grooves on the side close to the inside of the sand pool, and the plurality of V-shaped grooves are arranged in a direction and used for guiding water flow to form orderly laminar flow.

[0023] By adopting the above technical scheme, the plurality of V-shaped grooves are arranged in a direction to guide water flow to form orderly laminar flow along the direction of the V-shaped grooves, and the V-shaped grooves guide water flow to form a local high-speed area to generate scouring force on particles attached to the surface, thereby facilitating the sedimentation of the particles.

[0024] Further, the spiral dredging assembly comprises:

[0025] A sand discharge pipe is arranged on the sand collecting pool and used for discharging the mud sand in the sand collecting pool out of the sand collecting pool;

[0026] A spiral shaft is arranged in the sand discharge pipe in a rotating manner and used for moving the mud sand in the sand discharge pipe;

[0027] A driving member is arranged on the sand discharge pipe and used for driving the spiral shaft to rotate;

[0028] A detection member is arranged on the sand collecting pool and used for detecting the content of the mud sand in the sand collecting pool, and the detection member is electrically connected with the driving member and used for controlling the opening and closing of the driving member.

[0029] By adopting the above technical scheme, when the detection member detects that the amount of mud sand in the sand collecting pool reaches a maximum value, the driving member is started to discharge the mud sand in the sand collecting pool out of the sand collecting pool through the spiral shaft and the sand discharge pipe, thereby realizing the cleaning of the mud sand in the sand collecting pool.

[0030] Further, the water inlet pipe is provided with a tapered flow guide cover close to the sand pool side, and the diameter of the tapered flow guide cover gradually decreases, and the diameter close to the sand pool side is smaller than the diameter away from the sand pool side.

[0031] By adopting the above technical scheme, the tapered flow guide cover with gradually decreasing diameter accelerates the water flow, so that the water flow uniformly accelerates into the sand pool, facilitating the sedimentation of the mud sand in the sand pool.

[0032] Further, the water inlet pipe is provided with a grid on the side away from the sand pool for preventing part of the sundries from entering the sand pool.

[0033] By adopting the above technical scheme, the grid blocks the sundries with large volume in the water flow entering the water inlet pipe, thereby reducing the probability of blockage caused by the large-volume sundries entering the sand pool.

[0034] Further, the grid is inclined to be arranged, and the side of the grid away from the water inlet pipe is inclined downward and facilitates the debris to fall into the bottom of the water reservoir under the action of gravity when the water inlet pipe is closed.

[0035] By adopting the above technical scheme, since the grid is inclined to be arranged, and the side of the grid away from the water inlet pipe is inclined downward, when the water inlet pipe is filled with water, the water flow passes through the grid from the horizontal direction into the water inlet pipe, at this time, the water flow pushes the larger volume of impurities on the grid to move along the inclined grid, and finally slips out of the grid, thereby reducing the adhesion probability of the impurities on the grid; at the same time, when the water inlet pipe is closed, the impurities on the grid fall into the bottom of the water reservoir under the action of gravity, thereby reducing the probability of the debris blocking the grid.

[0036] In summary, the present application has at least one of the following beneficial technical effects:

[0037] 1. The impurities in the water flow entering the water inlet pipe are preliminarily filtered by the grid, then the water flow is accelerated by the tapered flow guide cover, and finally the water flow in the water inlet pipe flows into the sand trap along the tangent direction of the sand trap, so as to make the water flow rotate in the sand trap, under the joint action of gravity and centrifugal force, the mud and sand impact on the side wall of the sand trap and flow into the sand collecting pool along the side wall of the sand trap, and finally the water flow after the sand and mud treatment in the sand trap is discharged into the water inlet tower through the drain pipe on the sealing cover, thereby reducing the content of the sand and mud entering the water inlet tower, and further reducing the probability of the blowout hole being blocked.

[0038] 2. The amount of mud and sand in the sand collecting pool is detected by the detection member, when the amount of mud and sand in the sand collecting pool is too much, the driving member drives the spiral shaft to rotate, and finally the mud and sand in the sand collecting pool is discharged through the sand discharging pipe, so as to ensure that the sand collecting pool collects the mud and sand deposited in the sand trap. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a schematic view of the reservoir reconstruction blowout hole structure of the present application;

[0040] Figure 2 is a schematic view of the sand collecting mechanism and water inlet tower structure of the present application;

[0041] Figure 3 is Figure 2 a cross-sectional view of A-A in FIG.

[0042] Reference signs: 1, water inlet tower; 2, emptying hole; 21, pressure tunnel section; 22, working gate chamber; 23, non-pressure tunnel section; 3, grit removal mechanism; 31, grit chamber; 311, frame body; 312, upper section; 313, middle section; 314, lower section; 32, water inlet pipe; 321, tapered fairing; 33, sealing cover; 331, drain pipe; 34, sand collecting pool; 4, wear-resistant ceramic lining plate; 41, V-shaped groove; 5, spiral dredging assembly; 51, sand discharge pipe; 52, spiral shaft; 53, driving piece; 54, detection piece; 6, grille. DETAILED DESCRIPTION

[0043] The following will be described in detail in combination with the accompanying drawings. Figures 1-3 The application is further described in detail.

[0044] The application discloses a reservoir reconstruction emptying hole structure.

[0045] Reference Figure 1 A reservoir reconstruction emptying hole structure, comprising a water inlet tower 1, the water inlet tower 1 is connected with an emptying hole 2, the emptying hole 2 extends to the downstream side of the dam body and is used for discharging water in the water inlet tower 1 out of the dam body, and a grit removal mechanism 3 for grit removal treatment of water is arranged in front of the water inlet tower 1.

[0046] Reference Figure 1 And Figure 2 The water inlet tower 1 is connected with an emptying hole, the emptying hole extends to the downstream side of the dam body, the emptying hole is used for discharging water in the water inlet tower 1 out of the dam body, and the emptying hole 2 comprises a pressure tunnel section 21, a working gate chamber 22 and a non-pressure tunnel section 23, wherein the pressure tunnel section 21 is in communication with a water outlet of the water inlet tower 1, the other end of the pressure tunnel section 21 is in communication with the working gate chamber 22, the working gate chamber 22 is used for controlling opening or closing of the emptying hole 2, the non-pressure tunnel section 23 is in communication with the working gate chamber 22, and the non-pressure tunnel section 23 is used for discharging liquid discharged from the working gate chamber 22, so as to realize emptying of water in the reservoir; wherein the non-pressure tunnel section 23 is part of the original emptying hole 2 structure.

[0047] Reference Figure 2The sand setting mechanism 3 is arranged at the front end of the water inlet tower 1, and is used for sand setting treatment of water flow entering the water inlet tower 1. The sand setting mechanism 3 comprises a sand setting pool 31, a water inlet pipe 32, a sealing cover 33 and a sand collecting pool 34. The sand setting pool 31 is arranged in the reservoir. The water inlet pipe 32 is fixedly installed on the side wall of the sand setting pool 31. The water inlet pipe 32 flows water in the reservoir into the sand setting pool 31 in a tangent direction, so that the water finally forms a rotating water flow in the sand setting pool 31. The sealing cover 33 is fixedly installed on the top of the sand setting pool 31, and is used for sealing the top of the sand setting pool 31. The sealing cover 33 is fixedly installed with a water drain pipe 331 for draining water on the top of the sand setting pool 31 into the water inlet tower 1. The water drain pipe 331 is located at the axis position of the sand setting pool 31. The sand collecting pool 34 is fixedly installed on the bottom of the sand setting pool 31, and is used for collecting the deposited silt in the sand setting pool 31.

[0048] With reference to Figure 2 and Figure 3 The sand setting pool 31 comprises a frame body 311, an upper section 312, a middle section 313 and a lower section 314. The frame body 311 is fixedly installed on the reservoir. The upper section 312 is fixedly installed on the frame body 311 by bolts. The upper section 312 is connected with the water inlet pipe 32, and is in a cylindrical structure. The middle section 313 is fixedly installed on the frame body 311 by bolts. The middle section 313 is coaxially fixedly installed below the upper section 312 by a flange. The middle section 313 is sealingly connected with the upper section 312. The middle section 313 is in a circular table structure. The diameter of the side close to the upper section 312 is greater than the diameter of the side far from the upper section 312, so as to reduce the flow radius of the water flow, and facilitate the silt state on the side wall of the middle section 313. The lower section 314 is fixedly installed on the frame body 311 by bolts. The lower section 314 is coaxially fixedly installed below the middle section 313 by a flange. The lower section 314 is sealingly connected with the middle section 313. The lower section 314 is in an inverted conical structure. The lower section 314 is used for collecting the deposited silt and draining the silt into the sand collecting pool 34. The frame body 311 provides support for the upper section 312, the middle section 313 and the lower section 314. The upper section 312, the middle section 313 and the lower section 314 can be individually taken out from the frame body 311. When any one of the upper section 312, the middle section 313 and the lower section 314 is damaged, the corresponding section can be replaced, so as to realize the maintenance of the sand setting pool 31, improve the maintenance efficiency of the sand setting pool 31, and reduce the maintenance cost of the sand setting pool 31.

[0049] With reference to Figure 3The wear-resistant ceramic lining plate 4 is embedded and installed on the inner side wall of the upper section 312, the middle section 313 and the lower section 314. The wear-resistant lining plate improves the wear resistance of the upper section 312, the middle section 313 and the lower section 314, so that when the water flow drives the mud and sand to rotate, the wear-resistant lining plate reduces the wear probability of the mud and sand on the upper section 312, the middle section 313 and the lower section 314, and improves the service life of the upper section 312, the middle section 313 and the lower section 314.

[0050] With reference to Figure 3 The wear-resistant ceramic lining plate 4 is embedded and installed on the inner side wall of the upper section 312, the middle section 313 and the lower section 314. The wear-resistant lining plate improves the wear resistance of the upper section 312, the middle section 313 and the lower section 314, so that when the water flow drives the mud and sand to rotate, the wear-resistant lining plate reduces the wear probability of the mud and sand on the upper section 312, the middle section 313 and the lower section 314, and improves the service life of the upper section 312, the middle section 313 and the lower section 314.

[0051] With reference to Figure 2 and Figure 3 The sand collecting mechanism 3 further comprises a spiral dredging assembly 5 arranged on the dam body and used for dredging the sand collecting pool 34, so as to ensure that the sand collecting pool 34 collects the mud and sand. The spiral dredging assembly 5 comprises a sand discharging pipe 51, a spiral shaft 52, a driving member 53 and a detection member 54. The sand discharging pipe 51 is fixedly installed on the sand collecting pool 34 and is used for discharging the mud and sand in the sand collecting pool 34. The spiral shaft 52 is rotatably installed in the sand discharging pipe 51 and is used for moving the mud and sand in the sand discharging pipe 51. The driving member 53 is fixedly installed on the sand discharging pipe 51 and is used for driving the spiral shaft 52 to rotate, so that the spiral shaft 52 moves the mud and sand in the sand discharging pipe 51 and finally discharges the mud and sand in the sand collecting pool 34. The detection member 54 is fixedly installed on the sand collecting pool 34 and is used for monitoring the content of the mud and sand in the sand collecting pool 34 in real time. The detection member 54 is electrically connected with the driving member 53 and controls the opening and closing of the driving member 53 according to the detection result. Specifically, when the detection member 54 detects that the amount of the mud and sand in the sand collecting pool 34 reaches a maximum value, the detection member 54 starts the driving member 53 through an electric signal, so as to discharge the mud and sand in the sand collecting pool 34 through the spiral shaft 52 and the sand discharging pipe 51. When the detection member 54 detects that the amount of the mud and sand in the sand collecting pool 34 is lower than a set value, the detection member 54 closes the driving member 53 through an electric signal, so as to clean the mud and sand in the sand collecting pool 34. The driving member 53 of the embodiment is a waterproof driving motor, and the detection member 54 can be a pressure sensor or an ultrasonic thickness gauge fixedly installed at the bottom of the sand collecting pool 34.

[0052] With reference to Figure 2 and Figure 3The water inlet pipe 32 is provided with a tapered fairing 321 close to the grit chamber 31, the diameter of the tapered fairing 321 gradually decreases, and the diameter of the tapered fairing 321 close to the grit chamber 31 is smaller than the diameter of the tapered fairing 321 far from the grit chamber 31, so that the water flow uniformly accelerates into the grit chamber 31; the contraction ratio of the tapered fairing 321 of the embodiment is 1:3.

[0053] Referring to Figure 2 Figure 3 The water inlet pipe 32 is provided with a tapered fairing 321 close to the grit chamber 31, the diameter of the tapered fairing 321 gradually decreases, and the diameter of the tapered fairing 321 close to the grit chamber 31 is smaller than the diameter of the tapered fairing 321 far from the grit chamber 31, so that the water flow uniformly accelerates into the grit chamber 31; the contraction ratio of the tapered fairing 321 of the embodiment is 1:3.

[0054] The working principle of the embodiment of the application is as follows:

[0055] The impurities in the water flow into the water inlet pipe 32 are preliminarily filtered by the grid 6, then the water flow is accelerated by the tapered fairing 321, and finally the water flow in the water inlet pipe 32 flows into the grit chamber 31 along the tangent direction of the grit chamber 31, so that the water flow rotates in the grit chamber 31, under the joint action of gravity and centrifugal force, the sludge hits the side wall of the grit chamber 31 and flows into the sand collecting tank 34 along the side wall of the grit chamber 31, and finally the water flow treated by the grit chamber 31 is discharged into the water inlet tower 1 through the drain pipe 331 on the sealing cover 33, so as to reduce the sludge content in the water inlet tower 1, and further reduce the probability of blockage of the vent hole 2.

[0056] The above are preferred embodiments of the application, and are not intended to limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A reservoir reconstruction vent hole structure comprising a water intake tower (1) connected to a vent hole (2) extending to the downstream side of a dam body and used to discharge water in the water intake tower (1) from the dam body, characterized in that: The water inlet tower (1) is provided with a sand setting mechanism (3) in front for sand setting treatment of water, and the sand setting mechanism (3) comprises: A sand setting pool (31) is arranged in the reservoir; A water inlet pipe (32) is arranged on the side wall of the sand setting pool (31), and the water inlet pipe (32) flows water in the reservoir into the sand setting pool (31) in a tangent direction and forms a rotating water flow; A sealing cover (33) is arranged on the sand setting pool (31) and seals the top of the sand setting pool (31), and the sealing cover (33) is provided with a drain pipe (331) for draining water on the top of the sand setting pool (31) into the water inlet tower (1); A sand collecting pool (34) is arranged at the bottom of the sand setting pool (31) and is used for collecting the sediment in the sand setting pool (31); A spiral dredging assembly (5) is arranged on the dam body and is used for dredging the sand collecting pool (34).

2. The reservoir reconstruction vent hole structure according to claim 1, characterized by: The sand setting pool (31) comprises: A frame body (311) is arranged on the reservoir; An upper section (312) is arranged on the frame body (311) and connected with the water inlet pipe (32), and the upper section (312) is a cylindrical structure; A middle section (313) is coaxially arranged below the upper section (312) through a flange and connected with the frame body (311), and the middle section (313) is a circular table structure and the diameter near one side of the upper section (312) is larger than the diameter away from the other side of the upper section (312); A lower section (314) is arranged below the middle section (313) through a flange and connected with the frame body (311), and the lower section (314) is an inverted conical structure and is used for collecting and discharging the sediment into the sand collecting pool (34).

3. The reservoir reconstruction vent hole structure according to claim 2, characterized by: The inner side walls of the upper section (312), the middle section (313) and the lower section (314) are embedded with wear-resistant ceramic lining plates (4), which are used to improve the wear resistance of the upper section (312), the middle section (313) and the lower section (314).

4. The reservoir reconstruction vent hole structure according to claim 3, characterized by: A plurality of V-shaped grooves (41) are arranged on one side of the wear-resistant ceramic lining plate (4) near the inside of the sand setting pool (31), and the plurality of V-shaped grooves (41) are directionally arranged and used to guide the water flow to form an orderly laminar flow.

5. The reservoir reconstruction vent hole structure according to claim 1, characterized by: The spiral dredging assembly (5) comprises: A sand discharging pipe (51) is arranged on the sand collecting pool (34) and is used for discharging the sediment in the sand collecting pool (34) out of the sand collecting pool (34); A spiral shaft (52) is rotatably arranged in the sand discharging pipe (51) and is used to drive the sediment in the sand discharging pipe (51) to move; A driving member (53) is arranged on the sand discharging pipe (51) and is used to drive the spiral shaft (52) to rotate; A detection member (54) is arranged on the sand collecting pool (34) and is used to detect the sediment content in the sand collecting pool (34), and the detection member (54) is electrically connected with the driving member (53) and is used to control the opening and closing of the driving member (53).

6. The reservoir reconstruction vent hole structure according to claim 1, characterized by: The water inlet pipe (32) is provided with a tapered fairing (321) near one side of the grit chamber (31), the diameter of the tapered fairing (321) gradually decreases, and the diameter of the side close to the grit chamber (31) is smaller than the diameter of the side away from the grit chamber (31).

7. The reservoir reconstruction vent hole structure according to claim 6, characterized by: The water inlet pipe (32) is provided with a grid (6) on the side away from the grit chamber (31) for preventing part of the sundries from entering the grit chamber (31).

8. The reservoir reconstruction vent hole structure according to claim 7, characterized by: The grid (6) is inclinedly arranged, the side of the grid (6) away from the water inlet pipe (32) is inclined downward, and the sundries are easily dropped into the bottom of the reservoir under the action of gravity when the water inlet pipe (32) is closed.

Images