CN101457536B

CN101457536B - Siphon multi-point sand pumping device and using method thereof

Info

Publication number: CN101457536B
Application number: CN2007100507641A
Authority: CN
Inventors: 刘永言; 王勇
Original assignee: SICHUAN HOPE DEEP BLUE POWER CO Ltd
Current assignee: Sichuan Hope Hydropower Development Co ltd
Priority date: 2007-12-13
Filing date: 2007-12-13
Publication date: 2011-05-04
Anticipated expiration: 2027-12-13
Also published as: CN101457536A

Abstract

The invention relates to a device for carrying out automatic sand pumping by utilizing the siphon principle in a sand-settling basin of a headrace tunnel of a hydropower station and a use method thereof. The device consists of a fork type rectangular siphon pipe, a siphon stopping pipe which is provided with a siphon stopping floating ball and is connected with the fork type rectangular siphon pipe, a sand baffle at the position of a sand-pumping port and anti-blocking sand-flushing pipe and the like. When the hydropower station carries out switching off of the gate and reduction of load, the siphon condition is formed, thus realizing sand pumping. The invention is characterized in that a water outlet of the siphon pipe is arranged at the lower position to increase the siphon potential energy and the siphon stopping pipe is used for controlling the water level of starting sand pumping and stopping sand pumping; a branching mode of the siphon pipe is used for adding sand pumping points; and the increase of the group number of the siphon pipe is used for realizing multiple section even sand pumping at the bottom part of the sand settling basin. The device greatly improves the sand pumping efficiency, is stable and reliable and is convenient to implementation.

Description

Siphon multi-point sand pumping device and using method thereof

Technical field

The present invention relates to the sand pumping device of sand trap in the seepage tunnel, a kind of power station, utilize siphon principle to carry out automatic multi-point sand pumping.The invention still further relates to increases syphon group number and places each long-pending sand pit to take out husky using method to realize multistage respectively.

Background technology

The long-pending sand furrow of design adopts major diameter sand surfing regular sand surfing of pipe single-point or pipe siphon single-point to take out sand at the bottom of the sand trap of at present common high water head small hydropower station, utilizes the valve lock to open and stop to take out the mode of operation of sand.Because single-point is taken out husky active region taking out a little near in the limited range, grow or long-pending Shamian Island amasss wide occasion when long-pending sand furrow, it is just undesirable to take out husky effect, and can not move automatically.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of automatic siphon and takes out husky device, takes out husky better effects if, and is more reliable; For this reason, the present invention also will provide many group V shape syphons and place the multistage in each long-pending sand pit to take out method for determining sand respectively.

For solving the problems of the technologies described above, the present invention by V shape rectangle syphon, end the rainbow ball float, end tube, sandboard, anti-blocking clear sand tube form, because of the syphon delivery port is arranged on low level, strengthened siphon potential energy, therefore between ordinary water level and the highest spilling water water level, be provided with only tube, thereby reach the purpose of automatic termination siphon.When the barrier gate load shedding took place in the power station, water level increased to the preset water level height and floods only tube, and this water level is that husky beginning water level is taken out in siphon; When the low tube soffit to end of spilling water water level ends Hongkou, the rainbow ball float that ends that hangs in the basket herein falls, and air enters only tube, and the siphon decompression stops, and this water level is that husky stopping water level is taken out in siphon.End the rainbow ball float when drawing water and be attracted to only on Hongkou, take away on the water channel too much clear water in the time of can preventing siphon.The syphon cross section adopts the purpose of rectangular tube to be, siphon is not easy destroyed, and water level control is more accurate.It is lower that embowment can be taken out siphon the setting of husky beginning water level, and then prolong siphon and take out the husky time, increases the husky amount of taking out; The design of arc crotch has detachable pipeline structure, is convenient to clear up runner.

Take out sand for the multistage of realizing the sand trap bottom, the sand trap section configuration has been done further improvement: the straight-through long-pending sand furrow under the sand trap inclined-plane changes the long-pending sand pit of segmentation into usually, and the flow path direction that meets water is horn mouth, is convenient to silt and slips into alluvial.Syphon suction lower end is told two or more breeches pipes and is stretched into long-pending sand pit respectively, and end cut is parallel with long-pending sand pit and keep at a distance with the bottom surface.For preventing that syphon from taking out husky mouthful and stopping up, top, long-pending sand pit is provided with sandboard, the plate upper shed, so that weld the clear sand tube of siphon nozzle vertically, the pipe upper end is positioned at below the ordinary water level, and the opening flow path direction that meets water, and provides lasting water impact to take out husky mouthful, with anti-clogging.

The husky system of whole row is made up of one or more groups syphon, and every group of syphon can divide several jaws.The quantity of group number and jaw can be definite according to situations such as the length of culvert, landform, sand contents.

Adopt said apparatus significantly to improve and take out husky efficient, effective, the reliability height is convenient to implement.

Description of drawings

The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.

Fig. 1 places culvert sand trap and the full stereogram of siphon multi-point sand pumping device for the present invention.

Fig. 2 is the sectional view of sand trap shown in Figure 1 and siphon multi-point sand pumping device section.

Fig. 3 is Hongkou partial enlarged drawing I of ending shown in Figure 1.

Fig. 4 is the long-pending sand pit partial enlarged drawing II of place shown in Figure 2.

The long-pending sand pits 5. of 1. sand traps, 2. V shape rectangle syphons, 3. desilting pool walls 4. are ended tube 6. spilling water grooves 7. cross bars 8. and are ended Hongkou 9. sandboards, 10. clear sand tube 11. ordinary water levels 12. spilling water water levels 13. and take out husky beginning water level 14. and end rainbow ball float 15. and hang indigo plants among the figure

The specific embodiment

Fig. 1 places culvert sand trap and the full stereogram of siphon multi-point sand pumping device for the present invention.Every group of V shape rectangle syphon 2 placed sand trap, syphon 2 curved arc shapes place is associated with three quarter bends, wherein wear the sand trap body under two and enter long-pending sand pit 4 along inclined-plane desilting pool wall 3, take out husky mouthful parallel with the bottom surface and leave distance, the end is provided with sandboard 9 and sand tube 10 clearly; Another ends tube 5 levels and passes the desilting pool wall, and only Hongkou 8 is offered in the end.The curved arc shape place other end is fixed by the support of pipe end downwards along spilling water groove 6, and cross bar 7 links three groups of devices fixing.

Shown in Figure 2, ordinary water level 11 goes up and floods only tube 5 when the barrier gate load shedding of power station, and this takes out husky beginning water level 13 for siphon; When water level rose to spilling water water level 12 places of tank, siphon was taken out Sha Junke and is continued, and only reduced to the tube end when water level and ended 8 places, Hongkou, be that husky stopping water level is taken out in siphon, the rainbow ball float 14 that ends that Fig. 3 ends in the tube end Hanging Basket 15 falls, and air enters only tube 5 from ending Hongkou 8, and the siphon decompression stops.

The long-pending sand pit of Fig. 4 loam cake sandboard 9, clear sand tube 10 that links with it and syphon are taken out husky mouthful and are communicated, and under hydraulic action, provide lasting current sand surfing anti-blocking, and the sandboard 9 flow path direction two ends that meet water interspace and are convenient to silt and slip into alluvial.

The present invention is made up of three groups of V shape rectangle syphons 2 as can be seen from Figure 1.But the group number can be adjusted according to the scene.

Claims

1. siphon multi-point sand pumping device, this device mainly comprises V shape rectangle syphon (2) and the only tube (5) that is attached thereto, ends rainbow ball float (14), it is characterized in that: rectangle is adopted in the syphon cross section, R is little than heavy in section siphon pipe radius bend, delivery port is arranged at low level, has strengthened siphon potential energy; End rainbow ball float (14) when drawing water and be attracted to only on Hongkou (8), form the siphon necessary condition; Syphon is taken out husky mouthful of bifurcated and is realized multi-point sand pumping, makes that to take out husky effect obvious.

2. according to the described siphon multi-point sand pumping device of claim 1, it is characterized in that: end rainbow ball float (14) and fluctuate in hanging blue (15), control ends the unlatching or the obstruction in Hongkou (8) according to water level, realizes taking out automatically sand.

3. according to the described siphon multi-point sand pumping device of claim 1, it is characterized in that: V shape rectangle syphon (2) is at the vertical clear sand tube (9) of sand-absorbing end mouth welding.

4. according to the described siphon multi-point sand pumping device of claim 1, it is characterized in that: a plurality of minutes prongs of V shape rectangle syphon (2) stretch into long-pending sand pit (4), and the husky mouth of taking out of syphon (2) passes the husky plates of shelves (9) and communicates with sand tube (10) clearly.

5. according to the described siphon multi-point sand pumping device of claim 1, it is characterized in that: several groups of V shape rectangle syphons (2) place the long-pending sand pit or the long-pending sand furrow of several sections sand trap bottoms.