CN85107771A

CN85107771A - Swirling flow mud absorbing head

Info

Publication number: CN85107771A
Application number: CN 85107771
Authority: CN
Inventors: 彭龙生
Original assignee: TAIYUAN POLYTECHNIC UNIVERSITY
Current assignee: TAIYUAN POLYTECHNIC UNIVERSITY
Priority date: 1985-10-19
Filing date: 1985-10-19
Publication date: 1987-05-06
Also published as: CN85107771B

Abstract

Swirling flow mud absorbing head of the present invention belongs to separation, dredging technology, more particularly belong to a kind of external energy that need not, the spiral flow that only utilizes water body pressure in the deep water can form high flow velocity in the runner that specialized designs becomes is sucked, the mechanical device of scour reservoir bottom shoal materials.The present invention compares with the soil-suction head and the Accrete clearing device of existing other type, has extremely significant advantage, need not external energy, can guarantee the regulatory function for many years of reservoir, the more important thing is to be suitable for deepwater work to have the certain development prospect.

Description

Swirling flow mud absorbing head

The invention belongs to and separate and dredging technology, belong to a kind of external energy that need not or rather, the spiral flow that only utilizes the pressure of water body in the deep water can form high flow velocity in the runner that specialized designs becomes is sucked, the mechanical device of the shoal materials of scour reservoir bottom.

For Sedimentation Problems worldwide also is a long-standing insoluble difficult problem.At present, the existing dredging machinery that is used under water, all based on utilizing extra power to pass through the machine cut of cutter, shovel etc. or the injection by giant, discrete mud also utilizes pump line system suction muddy water to leave the water, the back is seen off by pipeline or other haulage device, this desilting equipment can only be used for the operation of shallow water territory, just powerless for deep water, and the energy and operational management personnel that need be enough, expense is higher, and well-known in addition dredge boat also can only be a shallow water operations.

Silt alluvial problem for big-and-middle-sized reservoir, can only lean on the operational mode of " hold arrange clearly muddy " to reduce the alluvial of reservoir at present, cooperate modes such as " emptying wash away " simultaneously, utilize a large amount of storehouse water to come sand surfing, this sand surfing mode water consumption is big, sand surfing weak effect, the more reservoir that can't be applied to regulate for many years, also can only drain silt near the preceding aperture, dam the sand surfing funnel for the husky mode of bottom outlet row, and can not drain large-area a large amount of silts in the reservoir area.

The present invention solves the difficult problem that people's serious hope for these years solves for a long time, utilize the natural potential energy of the interior institute of reservoir (especially high water head) water-accumulating body, specific function with natural eddy current, having designed a kind of swirling flow mud absorbing head sucts bottom of the reservior mud, and drain into the downstream automatically by bottom of the reservior row sand tube, and need not external energy, be specially adapted to deepwater work, for the specific function of utilizing the nature eddy current suck, scour reservoir sedimentation silt beyond example still also in the world, so the invention belongs to ground-breaking.

Swirling flow mud absorbing head of the present invention can guide water body head sucting body 1 that produces spiral flow and scour and propelling downwards automatically under the pressure differential effect voluntarily and the orifice plug 6 that can play throttling action when suction nozzle returns to be formed by one.The stator 2(that main body the is provided with three pairs of different radiis weather strip of holding concurrently) separates pressure distribution step by step, and will play guide functions continuously, guarantee stable formation of spiral flow on whole stream interfaces along radial direction; The guide face 3 of taper; To guarantee that spiral flow expands from inside to outside and be unlikely because the destruction that the out-of-flatness of mud face causes eddy flow, the antifouling ditch 4 that gos deep into guide face 3 is difficult for directly contacting with silt, guarantee the unimpeded of current in the ditch under any circumstance, avoid the suction nozzle possibility that runner is all blocked by silt when promotion; Wen Teli manages 5 upper ends and bottom of the reservior sand tube and joins and guaranteed the low-pressure and the high flow rate of current in whole working ranges, thereby make the energy conversion rate of eddy flow reach maximum value, entered the diffuser pipe of Wen Teli pipe by the silt of scour with eddy flow, speed can will convert pressure automatically to and can be at last arranges sand tube by the bottom of the reservior and pass dam and drain in the suitable water channel in downstream herein.

Its above the stator 2(weather strip of holding concurrently) a pair of for every grade, symmetrically, and should keep vertical direction to be beneficial to incision and sealing, section configuration is bordering on blade; Its above antifouling ditch initial section should be bordering on 1 * 2 rectangle, and its width is that 1/3 and stator direction of runner shoals gradually; The entrance in the vertical section of its above Wen Teli pipe should be ellipse garden ogee curve s.

The present invention compares with the soil-suction head and the Accrete clearing device of existing other type, has extremely significant advantage, need not external energy, can guarantee the regulatory function for many years of reservoir, and the more important thing is to be suitable for deepwater work.

The present invention has carried out too much time simulation test in the pressurized tank of a sealing, the result shows, under the head effect of 6～7m, it is 1.73 mud that clear water can wash away 10～14 days proportion of alluvial, and the sand content of silt carrying flow can reach 100kg/m ³, this only is preliminary index, is hopeful to obtain more high target.

Description of drawings:

Last figure is the upward view of swirling flow mud absorbing head

Figure below is the longitudinal plan of swirling flow mud absorbing head

1-head sucting body wherein

2-stator (weather strip of holding concurrently)

3-taper guide face

The antifouling ditch of 4-

5-Wen Teli pipe

The 6-orifice plug

Claims

1, a kind of external energy that need not, only utilize the pressure of water body in the deep water in the runner that specialized designs becomes, to suck by the spiral flow of the high flow velocity of formation, mechanical device-the swirling flow mud absorbing head of the shoal materials of scour reservoir bottom, it is characterized in that, it can guide water body head sucting body 1 that produces spiral flow and scour and propelling downwards automatically under the pressure differential effect voluntarily and the orifice plug 6 that can play throttling action when suction nozzle returns to be formed by one, its main body is provided with and guarantees that spiral flow is expanded from inside to outside and unlikely because the out-of-flatness of mud face, cause the guide face 3 of the taper that eddy flow destroys and separate stator 2 (double weather strip) step by step along three pairs of different radiis of radial direction pressure distribution, avoid suction nozzle when promotion, to be goed deep into guide face 3 by the antifouling ditch 4 that silt all blocks, and guaranteeing that the low pressure of current in whole work plane scopes and high flow rate make the eddy flow energy conversion rate reach peaked Wen Teli pipe 5, this pipe is connected with bottom of the reservior row's sand tube.

2, by the stator of three pairs of different radiis on the described swirling flow mud absorbing head main body of claim 1 (weather strip of holding concurrently) 2 it is characterized in that every grade a pair of, symmetrically.

3, by the stator of three pairs of different radiis on claim 1, the 2 described swirling flow mud absorbing head main bodys (weather strip of holding concurrently) 2 it is characterized in that every grade a pair of, symmetrically and keep vertical direction, section configuration is bordering on blade.

4, by the guide face 3 of the set taper of the described swirling flow mud absorbing head main body of claim 1, the cone angle of its feature garden conical surface is advisable with 100 °～140 °.

5, by the antifouling ditch 4 on the described swirling flow mud absorbing head main body of claim 1, it is characterized in that initial section should be bordering on 1 * 2 rectangle, width be about runner wide 1/3, and shoal gradually along stator.

It is characterized in that by the Wen Teli pipe on the described swirling flow mud absorbing head main body of claim 1 that 6, the vertical section inlet is ellipse garden ogee curve s.