CN215653969U

CN215653969U - Sand setting circulating device for slope-variable wave-flow water tank test tailings

Info

Publication number: CN215653969U
Application number: CN202122503024.7U
Authority: CN
Inventors: 张曦; 李天�; 王新鸣; 陈国强; 王刚; 曲坤; 于德双; 王建康
Original assignee: Fisheries Engineering Research Institute of CAFS
Current assignee: Fisheries Engineering Research Institute of CAFS
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-01-28
Anticipated expiration: 2031-10-18

Abstract

The utility model relates to the technical field of hydraulic model tests, in particular to a sand setting circulating device for slope-variable wave-current water tank test tailings, wherein a slope-variable lifter driven by a driving motor is movably connected with a hinged support at the bottom of a water tank main body, so that the slope of the water tank main body can be conveniently and accurately adjusted, time and labor are saved, the efficiency is high, and the defect of stress concentration caused by deformation at the joint of the slope-variable lifter and the bottom of the water tank main body is effectively avoided; the front end through the tail gate at the basin main part is equipped with the sand collection device of collecting great particle size sand body, is equipped with sand-water separator at the end, carries out sand, separation of water with tail water after the energy dissipation, through passing through the clear water with the clear water after the separation the wet return gets into the clean water reservoir, carries out cyclic utilization, has not only solved the problem that traditional sand setting system exists betterly, has effectively reduced test cost moreover.

Description

Sand setting circulating device for slope-variable wave-flow water tank test tailings

Technical Field

The utility model relates to the technical field of hydraulic model tests, in particular to a sand setting circulating device for slope-variable wave-current water tank test tailings.

Background

The sand movement test is one of the important components of hydraulic model tests, and in the marine and offshore projects, tests such as sand-carrying water flow turbulent motion structure and sand conveying rule, turbulent flow burst and sand movement relation and the like must be completed by the sand movement test, so that the water-sand separation treatment of test tailings is required in the water tank model test by using wave flow power to carry out the tests on the sand movement, and continuous and long-time cyclic conversion is kept.

At present, a herringbone tail gate is often installed at the tail end of a water tank in a wave flow water tank, a sand collecting cup is installed at the front end of the tail gate to separate water and sand from test tailings, the sand collecting cup can only collect 50% -65% of bottom sand with large dead weight and coarse particles, and suspended sand with fine particles cannot be collected by the sand collecting cup, so that the tailings enter a water return channel along with water flow at the downstream of the wave flow water tank and then enter a test reservoir, so that the water body of the reservoir is turbid, the water body cannot be used for other clear water tests, and a large amount of water body waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects and provides the sand setting circulating device of the test tailings of the wave current water tank with the variable slope, the slope-variable lifter driven by the driving motor is movably connected with the hinged support at the bottom of the water tank main body, so that the slope of the water tank main body can be conveniently and accurately adjusted, time and labor are saved, the efficiency is high, and the defect of stress concentration caused by deformation at the connection part of the slope-variable lifter and the bottom of the water tank main body is effectively avoided; the front end through the tail gate at the basin main part is equipped with the sand collection device of collecting great particle size sand body, is equipped with sand-water separator at the end, carries out sand, separation of water with tail water after the energy dissipation, through passing through the clear water with the clear water after the separation the wet return gets into the clean water reservoir, carries out cyclic utilization, has not only solved the problem that traditional sand setting system exists betterly, has effectively reduced test cost moreover.

The specific technical scheme provided by the utility model is as follows:

a sand setting circulating device of slope-variable wave-current water tank test tailings comprises,

the water tank main body is a container for bearing a test water body and comprises a water tank, wherein the water tank comprises a water tank bottom and water tank side walls with two transparent sides; the tail end of the water tank is sequentially provided with a sand collecting device for collecting sand bodies with larger grain sizes, a tail gate device for controlling the height of a water level, an energy dissipation device for reducing the water flow disorder energy and a sand-water separation device along the water flow direction;

the slope changing devices are arranged at the bottom of the water tank at intervals, and are driven by the driving devices to enable the water tank to ascend or descend so as to realize slope changing;

the water tank foundation is positioned below the water tank main body and used for supporting the water tank main body, and the water tank foundation comprises water tank pad beams which are fixedly connected with the lower ends of all the slope changing devices.

Preferably, the slope changing device comprises a driving motor and a lifter connected with the driving motor, the upper end of the lifter is movably connected with a hinged support arranged at the bottom of the water tank main body, and the lower end of the lifter is fixedly connected with the water tank pad beam through a bolt.

Further, the lower extreme of basin floorbar with every the device that becomes the slope corresponds the position and all is equipped with a basis and upsets the seat, the basin floorbar with basis upset seat fixed connection.

Further, the slope change proportion of the water tank main body is not more than +/-1.2% of the total length of the water tank.

Preferably, the sand collecting device comprises a sand collecting cup, and an opening of the sand collecting cup is upwards arranged at the bottom of the water tank, so that sand bodies with larger particle sizes sink due to the self gravity and are naturally collected under the action of the vortex water body.

Preferably, the sand-water separation device is positioned at the tail end of the water tank main body and comprises a collection device and a sand suction device; the collecting device comprises a sand collecting barrel with an upper end open, the sand collecting barrel comprises a large-diameter cylinder positioned on the upper part, a small-diameter cylinder positioned on the lower part and a cone body connected with the middle part, a sand sucking device is arranged in a cavity arranged in the sand collecting barrel, and the sand sucking device is provided with an impeller.

Furthermore, the sand suction device comprises a driving motor, a transmission shaft internally provided with a hollow cavity and an impeller vertically and fixedly arranged on the transmission shaft, wherein the impeller is positioned at the upper end part of the small-diameter cylinder, and the diameter of the impeller is matched with the inner diameter of the small-diameter cylinder, so that the centripetal force generated when the impeller rotates along with the transmission shaft can be realized to suck out small-particle-diameter sand along the hollow cavity, and the sand and the water are separated.

The beneficial effects are that:

the utility model provides a sand setting circulating device of slope-variable wave-current water channel test tailings, which is characterized in that a slope-variable lifter driven by a driving motor is movably connected with a hinged support at the bottom of a water channel main body, so that the slope of the water channel main body can be conveniently and accurately adjusted, time and labor are saved, the efficiency is high, and the defect of stress concentration caused by deformation at the connection part of the slope-variable lifter and the bottom of the water channel main body is effectively avoided; the front end through the tail gate at the basin main part is equipped with the sand collection device of collecting great particle size sand body, is equipped with sand-water separator at the end, carries out sand, separation of water with tail water after the energy dissipation, through passing through the clear water with the clear water after the separation the wet return gets into the clean water reservoir, carries out cyclic utilization, has not only solved the problem that traditional sand setting system exists betterly, has effectively reduced test cost moreover.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application.

In the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural diagram of the present invention in a variable slope state.

Wherein:

a sink foundation 1; a slope-changing elevator 2; a water tank 3; a water tank wall 4; a sand collecting cup 5; a tail gate 6; a tail gate motor 7; an energy dissipating net 8; a slope-changing motor 9; a sand discharge port 10; a separation motor 11; a drive shaft 12; a cavity 13; a drain port 14; an impeller 15; a sand collection barrel 16; a sand suction port 17; a small conical cavity 18; a fixed plate 19; a sand body 20; a large cylinder 21; a small cylinder 22; a return pipe 23; a clear water reservoir 24; a hinge support 25; an end cap 26; sink pad beams 27; a support frame 28; a foundation pier seat 29; a bolt 30.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated; "number" means more than two; the description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.

The preferred embodiment of the utility model, with reference to fig. 1 and 2:

a sand setting circulating device of slope-variable wave-flow water tank test tailings comprises a water tank main body, a slope-variable device, a sand-water separation device and a driving motor.

The basin main part includes basin 3, is used for supporting the support frame 28 of basin 3, is located the basin basis 1 that the basin 3 lower part was equipped with the ground effect, and bolt 30 fixed mounting is passed through in the 2 bottoms of slope-changing lift on the basin filler beam 27 of basin basis 1, basin basis 1 comprises reinforced concrete, basin filler beam 27 is the channel-section steel material, the lower extreme of basin filler beam 27 and every slope-changing lift 2 correspond the position and all are equipped with a basis pier base 29, basin filler beam 27 with basis pier base 29 welded connection is in the same place, and the top of slope-changing lift 2 articulates through hinged-support 25 the bottom of basin 3, hinged-support 25 through fastener (not shown in the figure) with the bottom fixed connection of basin 3.

The variable slope lifting machine 2 is connected with a variable slope motor 9, the variable slope lifting machine 2 is provided with a plurality of variable slope lifting machines according to test requirements, the variable slope lifting machines are respectively arranged at different positions of the bottom of the water tank 3, the variable slope lifting machines 2 are driven by the variable slope motor 9 to rise for different distances, and the bottom of the water tank 3 is made to have different slopes, as shown in fig. 2.

The slope change proportion of the water tank main body is not more than +/-1.2% of the total length of the water tank 3.

The supporting frames 28 are uniformly arranged on the periphery of the water tank 3 along the water flow direction, and the water tank wall 4 between the adjacent supporting frames 28 is a transparent wall made of glass materials, so that the experimental observation is facilitated.

The tail end of the water tank 3 is sequentially provided with a sand collecting cup 5 for collecting sand bodies with larger grain sizes, a tail gate 6 for controlling the height of a water level and an energy dissipation net 8 for reducing the water flow disorder energy along the water flow direction.

The tail gate 6 is installed on the water tank 3 through bolts, the tail gate motor 7 is installed on the tail gate 6, and the tail gate motor 7 controls the tail gate 6 to rise or fall so as to maintain the height of the water body in the water tank 3 to meet the preset requirements of the test.

The sand collecting cup 5 is arranged at the bottom of the water tank 3 and is positioned at the position of about 50cm away from the front end of the tail gate 6, the cup opening is connected with the bottom plane of the water tank 3 through a sealant, and the lower end of the sand collecting cup 5 is movably provided with an end cover 26 through threads. When the experimental tailings moved to the sand collecting cup 5 top because of the power effect of rivers, because the effect of blocking water of tail gate 6, the velocity of flow of rivers can suddenly reduce, formed secondary vortex water environment above sand collecting cup 5, and the great sand body 20 of particle diameter can deposit in sand collecting cup 5 because of self action of gravity this moment, has realized once collecting the great sand body 20 of particle diameter, and the sand body 20 of collecting can be opened after the experiment the lower extreme end cover 26 of sand collecting cup 5, spills the back sand body 20 and shifts out and supply cyclic utilization next time.

And the sand-water separation device is arranged below the tail end of the water tank main body and comprises a sand collecting barrel 16 and a sand suction device.

The sand body 20 with smaller grain diameter flows into the sand collecting barrel 16 after flowing through the energy dissipation net 8 along with water.

The sand collecting barrel 16 consists of a large cylinder 21 at the upper end, a small cylinder 22 at the lower end and a connecting part cone in the middle, and the middle is a hollow chamber; the upper end of the large cylinder 21 is open, the water outlet 14 is arranged at the upper end of the large cylinder 21, and the lower end chamber of the small cylinder 22 is a conical small conical cavity 18, so that sand bodies 20 with small particle sizes are concentrated at the bottom and are convenient to absorb.

The sand suction device is installed in the cavity of the sand collection barrel 16, and comprises a fixing plate 19 which is installed at the opening part of the sand collection barrel 16 through fasteners, a separation motor 11 which is fixedly installed on the fixing plate 19 through bolts and other fasteners, wherein the separation motor 11 drives a transmission shaft 12 to rotate, the transmission shaft 12 is vertically positioned at the center of the sand collection barrel 16, and a sand suction port 17 is formed in the lower end of the transmission shaft 12.

Further, an impeller 15 is fixedly installed on the transmission shaft 12, the impeller 15 is located at the upper end of the cavity of the small cylinder 22, and the diameter of the impeller 15 is matched with the inner diameter of the cavity of the small cylinder 22, so that when the impeller 15 rotates along with the transmission shaft 12, water in the cavity of the small cylinder 22 and the sand body 20 with the small particle size rotate in the cavity; the transmission shaft 12 is internally provided with a through cavity 13, and centripetal force generated by rotation of the impeller 15 enables the sand body 20 with the micro particle size to be sucked out along the cavity 13 and discharged through the sand discharge port 10, so that secondary collection of the sand body 20 with the micro particle size is realized, and sand and water separation is realized.

The rotating speed of the transmission shaft 12 can be controlled by adjusting the rotating speed of the separation motor 11 according to the sand output of the sand discharge port 10, so that the rotating speed of the impeller 15 can be adjusted in real time, and the absorption amount of the sand body 20 with the micro particle size by the sand suction port 17 can be controlled.

The separated tail water flows into a clear water reservoir 24 through a water return pipe 23 through a water discharge port 14 at the upper end of the sand collection barrel 16, so that the tail water can be recycled.

The foregoing description shows and describes the preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

1. The utility model provides a sand setting circulating device of experimental tailings of wave current basin on variable slope which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the water tank main body is a container for bearing a test water body and comprises a water tank, wherein the water tank comprises a water tank bottom and water tank side walls with two transparent sides; the tail end of the water tank is sequentially provided with a sand collecting device for collecting large-particle-size sand bodies, a tail gate device for controlling the height of a water level, an energy dissipation device for reducing water flow disorder energy and a sand-water separation device along the direction of water flow;

2. The sand setting circulation device for the test tailings of the variable-slope wave-current flume according to claim 1, characterized in that:

the slope changing device comprises a driving motor and a lifter connected with the driving motor, the upper end of the lifter is movably connected with a hinged support arranged at the bottom of the water tank main body, and the lower end of the lifter is fixedly connected with the water tank pad beam through a bolt.

3. The sand setting circulation device for the test tailings of the wave current flume with the variable slope according to claim 2, characterized in that: the lower extreme of basin floorbar with every the slope device corresponds the position and all is equipped with a basis and upsets the seat, basin floorbar with basis upset seat fixed connection.

4. The sand setting circulation device of the variable slope wave current water tank test tailings according to claim 3, wherein: the slope change proportion of the water tank main body is not more than +/-1.2% of the total length of the water tank.

5. The sand setting circulation device of the variable slope wave current water tank test tailings according to claim 4, wherein: the sand collecting device comprises a sand collecting cup, an opening is upwards arranged at the bottom of the water tank, so that under the action of a vortex water body, the sand bodies with large particle sizes sink due to the self gravity and are naturally collected.

6. The sand setting circulation device for the test tailings of the variable-slope wave-current flume according to claim 1, characterized in that: the collecting device comprises a sand collecting barrel with an upper end open, the sand collecting barrel comprises a large-diameter cylinder positioned on the upper part, a small-diameter cylinder positioned on the lower part and a cone body connected with the middle part, and a sand sucking device is arranged in a cavity formed in the sand collecting barrel.

7. The sand setting circulation device for the test tailings of the wave current flume with the variable slope according to claim 6, characterized in that: the sand suction device comprises a driving motor, a transmission shaft which is driven by the motor and is rotatably provided with a hollow cavity inside, and an impeller vertically and fixedly arranged on the transmission shaft, wherein the impeller is positioned at the upper end part of the small-diameter cylinder, and the diameter of the impeller is matched with the inner diameter of the small-diameter cylinder, so that the centripetal force generated when the impeller rotates along with the transmission shaft can suck out small-particle-diameter sand along the hollow cavity, and sand and water separation is realized.