CN203570354U - Moving overhauling drainage device of long tailrace tunnel system for hydropower station - Google Patents
Moving overhauling drainage device of long tailrace tunnel system for hydropower station Download PDFInfo
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- CN203570354U CN203570354U CN201320635519.8U CN201320635519U CN203570354U CN 203570354 U CN203570354 U CN 203570354U CN 201320635519 U CN201320635519 U CN 201320635519U CN 203570354 U CN203570354 U CN 203570354U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000007667 floating Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000012423 maintenance Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012279 drainage procedure Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Abstract
The utility model discloses a moving overhauling drainage device of a long tailrace tunnel system for a hydropower station. The device comprises a wading truck in a tunnel and a diesel generating set outside the tunnel, and is characterized in that a buoyancy tank connected with the wading truck is further arranged in the tunnel, is of an integral structure composed of a structural frame, floating cylinders, a jet pump and a water level gauge, and is further connected with a water pump and a drainage branch pipe, and a drainage main pipe is further arranged along the bottom edge of the tunnel in the axial direction of the tunnel and is fixedly connected with the drainage branch pipe through a joint. The device is mainly applied to drainage of a tailrace tunnel, especially for drainage of a long tailrace tunnel; compared with a conventional drainage scheme, reliability of a tailrace tunnel drainage system can be remarkably improved, the civil engineering project amount can be reduced, and investment is saved.
Description
Technical field
The utility model relates to Hydraulic and Hydro-Power Engineering mechanical & electrical technology field, specifically refers to that the long tailwater tunnel system in a kind of power station moves drainage for overhaul device.
Background technology
When power station is moved, in tailwater tunnel, be filled with setting-out stream, repair and maintenance, after operation a period of time, need to be carried out to tailwater tunnel in power station.Before tailwater tunnel maintenance, need close the gate of tunnel outlet, and get rid of the ponding in tunnel, then power station operations staff enters tunnel and makes an inspection tour and safeguard.The draining of conventional tail water tunnel for overhaul has following several scheme:
1, scheme one: the other layout of minimum point at tailwater tunnel overhauled collecting well and draining pump house, and buries steel pipe underground and will overhaul collecting well and tailwater tunnel connection, is equipped with the equipment such as corresponding drainage pump and valve in pump house.This drainaging scheme system works is reliable and stable, equipment operation and maintenance is more convenient, but need to excavate special access gallery for equipment conveying and personnel's traffic, construction investment is very large, and access gallery also needs the accessory systems such as supporting ventilation, illumination and draining are set, and the economy of scheme is very poor.
2, scheme two: other the drawing of tailwater tunnel, dig and arrange sump, water pump is installed in sump and is carried out draining.This drainaging scheme system configuration is simple, civil engineering only needs to do a small amount of excavation, small investment, the better economy of scheme, but after tailwater tunnel water-filling, all relevant devices such as the water pump of tunnel drainage system, valve, cable are all submerged under water for a long time, and whether equipment is working properly cannot make an inspection tour.When if in water, sand content is larger in addition, silt may deposit in sump, water pump is covered completely, affect the normal work of water pump, if fault has appearred in any one parts of drainage system, because personnel cannot enter, all can not keep in repair, also just mean that drainage system cannot be used, and affects the maintenance of tunnel, so the reliability of scheme is poor, very risky.
Summary of the invention
A kind of reliable, the economic tailwater tunnel that the purpose of this utility model is to provide moves drainage for overhaul scheme, is particularly useful for long tailwater tunnel system.
For achieving the above object, the long tailwater tunnel system in power station of the utility model design moves drainage for overhaul device, comprises the diesel generating set of paddling outside truck and tunnel in tunnel, it is characterized in that: in tunnel, be also provided with the buoyancy tank being connected with the truck of paddling; The overall structure of described buoyancy tank for being formed by structural frame, floating drum, jet pump and water-level gauge; On described buoyancy tank, be also fixed with submersible pump and branch drain; At the bottom of tunnel, along tunnel, be axially also embedded with main drain; Described main drain and branch drain are affixed by joint.
As preferred version, described floating drum, jet pump and water-level gauge are all positioned at the below of structural frame; On described buoyancy tank, be also provided with searchlight.
Further, at tunnel top, along tunnel, be axially arranged with steel bracket, be fixed on interim airduct, axial flow blower and supporting cable on steel bracket; Described axial flow blower is connected with interim airduct; One end of described cable is connected with diesel generating set, and the other end of cable is connected with searchlight.
Further, be also provided with keg buoy, described keg buoy is secured together with branch drain and cable respectively.
The utility model adopts the truck of paddling, the buoyancy tank of drive device, diesel-driven generator, water pump, branch drain, main drain, water level to take into account cable etc. and is built into a tailwater tunnel and moves water drainage system for maintenance.Dewatering installation inwardly advances along with the decline of tunnel middle water level, until reach the emptying ponding of tunnel minimum point.Except the basic components such as main drain, cable hanger, airduct hook, other all parts all just enter tunnel when needs draining, find that any fault all can on-call maintenance, even if therefore equipment component breaks down, also do not affect and complete drainage works on schedule, reliability is very high.
Conventional drainaging scheme is to overhaul collecting well and draining pump house other layout of minimum point of tailwater tunnel, and buries steel pipe underground and will overhaul collecting well and tailwater tunnel connection, is equipped with the equipment such as corresponding drainage pump and valve in pump house; Other the drawing of tailwater tunnel, dig and arrange sump, water pump is installed in sump and is carried out draining.The former construction investment is very large, and the economy of scheme is very poor; Though the latter's configuration is simple, construction investment is few, the better economy of scheme, whether equipment is working properly cannot make an inspection tour, and if there is fault in any one parts of drainage system, drainage system cannot maintenance and use, so the reliability of scheme is poor, very risky.
The utility model has the advantage of: the utility model is mainly applicable to the draining of tailrace tunnel, the particularly draining in long-tail water hole, relatively conventional drainaging scheme can significantly improve the reliability of tailrace tunnel drainage system and can reduce civilwork engineering quantity, saves investment.
Accompanying drawing explanation
Fig. 1 is the structural representation of long-tail of the present utility model water hole drainage system technical scheme schematic diagram.
The buoyancy tank schematic diagram of Fig. 2 drive device.
In figure: the buoyancy tank 6 of diesel generating set 1, steel bracket 2, the truck 3 of paddling, junction box 4, cable 5, drive device, floating drum 61, jet pump 62, water-level gauge 63, structural frame 64, joint 7, submersible pump 8, branch drain 9, main drain 10, keg buoy 11, interim airduct 12, axial flow blower 13, searchlight 14.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in fig. 1, the long tailwater tunnel system in power station moves drainage for overhaul device, comprises the diesel generating set 1 of paddling outside truck 3 and tunnel in tunnel, is also provided with the buoyancy tank 6 being connected with the truck 3 of paddling in tunnel; The overall structure of buoyancy tank 6 for being formed by structural frame 64, floating drum 61, jet pump 62 and water-level gauge 63; Submersible pump 8 and branch drain 9 are fixed on buoyancy tank 6; Along tunnel edge along tunnel, be axially also embedded with main drain 10; Main drain 10 is affixed by joint 7 with branch drain 9.
The long tailwater tunnel system in power station moves drainage for overhaul device, it is characterized in that: floating drum 61, jet pump 62 and water-level gauge 63 are all positioned at the below of structural frame 64; On buoyancy tank 6, be also provided with searchlight 14.
At tunnel top, along tunnel, be axially arranged with steel bracket 2, be fixed on interim airduct 12 on steel bracket 2, axial flow blower 13 and cable 5; Axial flow blower 13 is connected with interim airduct 12; One end of cable 5 is connected with diesel generating set 1, and the other end is connected with submersible pump 8 and searchlight 14; Also be provided with keg buoy 11, each keg buoy 11 is fixed together with branch drain 9 and cable 5, and it is for preventing branch drain and cable submerged that keg buoy 11 is set.
Cable is drawn from diesel generating set 1, is fixed on steel bracket default in tunnel 2, and every section of long 50m of cable 5, along with the decline of water level is laid forward gradually, adopts junction box 4 to connect between every section of cable 5.
While needing draining, the truck 3 of paddling is pushing away buoyancy tank 6 equipment such as grade and is moving forward, and to needing the position of draining to stop, water outlet branch drain 9 is connected on buoyancy tank 6, opens the power set-jet pump 62 on buoyancy tank 6, pushes buoyancy tank 6 to deep water place; When buoyancy tank 6 advances, constantly emit branch drain 9, cable 5 and keg buoy 11 are fixed on branch drain 9 simultaneously, buoyancy tank 6 advances to 50m place, and branch drain 9 is fixing by joint 7 with pre-buried main drain 10.When water level drops to desired location, stop submersible pump 8, branch drain 9 and main drain 10 are disconnected; Start the truck 3 of paddling to certain position, again open the jet pump 62 on buoyancy tank 6, buoyancy tank 6 is advanced into 50m place, repeat the in place and drainage procedure of above-mentioned buoyancy tank 6, directly arrive tailwater tunnel lowest part.
In addition, because long-tail water hole is an approximate airtight space, atmosphere draught-free, in drainage procedure, the operation of truck also needs fresh air and can produce waste gas to need to discharge, and personnel need to enter; For guaranteeing personnel's safety and the normal operation of truck, need to establish at a certain distance an axial flow blower 13 and set up interim airduct 12 and ventilate, axial flow blower 13 and interim airduct 12 are suspended on default steel bracket 2; Also needing that in addition searchlight 14 is set throws light on; Axial flow blower 13 and searchlight 14 electric consumption on lighting are all taken from diesel-driven generator 1.
Wherein, reserved interface band flap valve on main drain 10, flap valve uses blind flange airtight at ordinary times, when needs are used, open blind flange, the joint of branch drain 9 is received on flap valve, after draining herein completes, taken off joint 7 and cover again blind flange, then move to next row water spot and operate equally.
As shown in Figure 2, the chief component parts of buoyancy tank 6 have floating drum 61, jet pump 62, water-level gauge 63, proof submersible sand discharging pump and structural frame 64 etc., and above all parts connect together by structural frame 4, form an integral body; The floating drum 61 on both sides provides enough buoyancy for whole buoyancy tank 6, and buoyancy tank 6 can swim in the water surface; Power source when jet pump 2 advances for buoyancy tank 6, puts into water by buoyancy tank 6, opens jet pump 62, owing to exporting the effect of current, whole buoyancy tank 6 is moved to deep water place; Water-level gauge 63 is used for measuring the depth of water of current point, by it, judges whether the depth of water can meet submersible pump 8 job requirements, if met, can continue draining; Otherwise, stop submersible pump 8, buoyancy tank 6 is moved to next deep water place is again in place restarts submersible pump 8 drainings.
Operating principle of the present utility model is: while starting draining, the truck of paddling is pushing away buoyancy tank and is moving to drainage point, the power set of restarting on buoyancy tank make the related water pump of buoyancy tank reach deep water place, tunnel peripheral hardware diesel-driven generator also provides power by water-proof cable for water pump and buoyancy tank, water pump outfall is connected on pre-buried main drain by flexible pipe, main drain leads to tunnel outside, and after unlatching water pump, water level slowly reduces, and water pump is also along with water level declines; Water pump drops to certain position, stops water pump, and the truck of paddling continues to move ahead again, repeats said process, until reach tunnel minimum point.When entering the degree of depth of tunnel, deepen, can throw light on by small-sized searchlight, axial flow blower is set at a certain distance and sets up airduct and ventilate, guarantee into hole personnel's safety, illumination and ventilation equipment are powered by diesel-driven generator outside hole equally simultaneously.
Claims (5)
1. the long tailwater tunnel system in power station moves a drainage for overhaul device, comprises the truck of paddling (3) in tunnel and the diesel generating set (1) outside tunnel, it is characterized in that: in tunnel, be also provided with the buoyancy tank (6) being connected with the truck of paddling (3); Described buoyancy tank (6) is the overall structure consisting of structural frame (64), floating drum (61), jet pump (62) and water-level gauge (63); On described buoyancy tank (6), be also fixed with submersible pump (8) and branch drain (9); At the bottom of tunnel, along tunnel, be axially also embedded with main drain (10); Described main drain (10) is affixed by joint (7) with branch drain (9).
2. the long tailwater tunnel system in power station according to claim 1 moves drainage for overhaul device, it is characterized in that: described floating drum (61), jet pump (62) and water-level gauge (63) are all positioned at the below of structural frame (64); On described buoyancy tank (6), be also provided with searchlight (14).
3. the long tailwater tunnel system in power station according to claim 1 and 2 moves drainage for overhaul device, it is characterized in that: at tunnel top, along tunnel, be axially arranged with steel bracket (2), be fixed on interim airduct (12), axial flow blower (13) and cable (5) on steel bracket (2); Described axial flow blower (13) is connected with interim airduct (12); One end of described cable (5) is connected with diesel generating set (1), and the other end of cable (5) is connected with submersible pump (8) and searchlight (14).
4. the long tailwater tunnel system in power station according to claim 1 and 2 moves drainage for overhaul device, it is characterized in that: be also provided with keg buoy (11), described keg buoy (11) is fixed together with branch drain (9) and cable (5).
5. the long tailwater tunnel system in power station according to claim 3 moves drainage for overhaul device, it is characterized in that: be also provided with keg buoy (11), described keg buoy (11) is fixed together with branch drain (9) and cable (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320635519.8U CN203570354U (en) | 2013-10-15 | 2013-10-15 | Moving overhauling drainage device of long tailrace tunnel system for hydropower station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320635519.8U CN203570354U (en) | 2013-10-15 | 2013-10-15 | Moving overhauling drainage device of long tailrace tunnel system for hydropower station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570354U true CN203570354U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320635519.8U Expired - Lifetime CN203570354U (en) | 2013-10-15 | 2013-10-15 | Moving overhauling drainage device of long tailrace tunnel system for hydropower station |
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| CN (1) | CN203570354U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119141A (en) * | 2020-01-17 | 2020-05-08 | 中国电建集团贵阳勘测设计研究院有限公司 | Tail water hole export overhauls gate and fills drainage structures |
-
2013
- 2013-10-15 CN CN201320635519.8U patent/CN203570354U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119141A (en) * | 2020-01-17 | 2020-05-08 | 中国电建集团贵阳勘测设计研究院有限公司 | Tail water hole export overhauls gate and fills drainage structures |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |