CN212336278U - Large-scale underground type hydropower station factory building leakage drainage system combined with slope shaft - Google Patents
Large-scale underground type hydropower station factory building leakage drainage system combined with slope shaft Download PDFInfo
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- CN212336278U CN212336278U CN201921669338.0U CN201921669338U CN212336278U CN 212336278 U CN212336278 U CN 212336278U CN 201921669338 U CN201921669338 U CN 201921669338U CN 212336278 U CN212336278 U CN 212336278U
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Abstract
The utility model discloses a large underground hydropower station factory building leakage drainage system combined with a side slope shaft, wherein a shaft (3.1) is arranged on one side of a dam side slope (3.3), and a side slope (3.4) is arranged on the other side of the shaft (3.1); the side slope (3.4) in be provided with penstock (3.2), penstock (3.2) one end and shaft (3.1) link up mutually, penstock (3.2) pass through the dam seam department in side slope (3.4) be provided with and cross seam processing structure (3.5), cross seam processing structure (3.5) be located the dam seam department in side slope (3.4). The pipeline device overcomes the defects that the outlet of a drain pipe is too high and the pipeline needs to climb upwards for a large distance in the prior art, and has the advantages that the slope pipeline adopts a buried pipe form, stains can not be formed on the slope, and the appearance can be beautified.
Description
Technical Field
The utility model relates to hydraulic and hydroelectric engineering technical field, more specifically be a large-scale underground formula power station factory building seepage drainage system who combines the side slope shaft.
Background
The factory building leakage drainage system of the large underground hydropower station combined with the slope shaft collects various leakage water (leakage water of a factory building structure, leakage water of a unit top cover, leakage water of a main shaft seal and leakage water of various valves in the factory) in a factory building to a leakage water collecting well, and then the leakage water is pumped and drained to the downstream by a long-shaft deep well pump arranged above the leakage water collecting well so as to prevent accidents of flooding the factory building, and is very important for safe operation of the hydropower station.
According to a traditional design method, a factory building leakage drainage system of an underground hydropower station discharges leakage water in a leakage water collecting well to a plunge pool by using a long-shaft deep well pump, and the outlet elevation of a drainage pipe is usually higher than a design flood level and has a certain distance from a dam so as to prevent the water outlet from being flapped by surge induced when a power station discharges flood and influence the safe operation of the leakage drainage system.
The conventional design method has several disadvantages: firstly, the outlet of the drain pipe is too high, the pipeline needs to climb upwards for a large distance, and a composite exhaust valve is inevitably needed to be arranged at a plurality of highest points of the pipeline, so that the damage to the pipeline caused by high vacuum or a bridging water hammer generated in the pipeline when the water pump is suddenly powered off is prevented. And the additional arrangement of the exhaust valve needs to leave a valve well in the mountain body and leave enough space for the exhaust valve to suck and exhaust, so that the civil engineering excavation work amount and the equipment purchase cost are increased. In addition, these exhaust valves that are comparatively scattered in space also need maintenance and overhaul in the later stage, and will spend great manpower, material resources for this reason.
Secondly, the outlet of the pipeline is used for preventing the outlet from beating due to surge induced during flood discharge, a certain distance is reserved between the outlet of the pipeline and the downstream of the dam, the pipeline arrangement is long, the hydraulic loss of the pipeline is increased, the energy consumption of a water pump is increased, and the outlet pipeline is obviously installed in a large power station in consideration of later-stage outlet pipeline maintenance, so that a pipeline gallery can be additionally excavated for the pipeline, the investment is increased, and the construction period is prolonged.
And thirdly, the water outlet directly discharges on the side slope, stains are formed on the side slope in the years, the whole appearance of the dam is not favorable, and the water outlet is contrary to the development concept of green water hills.
Therefore, a method for solving the above problems is urgently needed.
Disclosure of Invention
The utility model aims to overcome the weak point of above-mentioned background art, and provide a large-scale underground formula hydropower station factory building seepage drainage system who combines the side slope shaft.
The utility model aims at being implemented through the following technical scheme: a large underground hydropower station factory building leakage drainage system combined with a slope shaft comprises a drainage pump house water pump device part, a water pump water pumping pipeline part and a gravity flow self-flowing part; said water pumping line portion being located between said drain pump house water pumping equipment portion and said gravity flow portion; the water pump lifting pipe part is clearly coated in the construction branch hole;
the gravity flow self-flowing part comprises a vertical shaft, a pressure steel pipe, a dam side slope, a side slope and a gap processing structure;
a vertical shaft is arranged on one side of the dam side slope, and a side slope is arranged on the other side of the vertical shaft; a pressure steel pipe is arranged in the side slope, one end of the pressure steel pipe is communicated with the vertical shaft, and an over-seam processing structure is arranged at the position, passing through a dam seam in the side slope, of the pressure steel pipe; the pressure steel pipes are arranged along the direction of the side slope, and the outlet at the other end of each pressure steel pipe is positioned below the tail water level.
In the above technical scheme: the drainage pump room water pump equipment part is positioned in an auxiliary installation field of an underground power plant of the power station; a drainage main pipe, a cleaning water main pipe and a drainage pump room are arranged in the auxiliary installation field of the power station underground workshop;
the drainage pump room water pump equipment part comprises a seepage water collecting well, a long-shaft deep water pump, an elastic seat seal gate valve, a check valve, a pressure gauge, an exhaust valve, a liquid level meter and a flow indicating annunciator;
a liquid level meter is arranged on one side inside the seepage water collecting well, a submersible sewage pump is arranged at the bottom of the seepage water collecting well, and the submersible sewage pump is communicated with tail water at the downstream through a pipeline;
three long-shaft deep water pumps are arranged in the seepage water collecting well, and each long-shaft deep water pump is connected with a drainage main pipe arranged inside the deep water pump through a pipeline;
the cleaning water main pipe is connected with a motor at the top of the long-shaft deep water pump through a pipeline;
an exhaust valve, a pressure gauge, a flow indicating annunciator, an elastic seat seal gate valve and a check valve are sequentially arranged between the top outlet of each long-shaft deep water pump and the drainage main pipe.
In the above technical scheme: the water pump water pumping pipeline part comprises a water pumping steel pipe and a flap valve; one end of the water lifting steel pipe penetrates through the dam slope and extends into the vertical shaft, a flap valve is arranged at the outlet of the water lifting steel pipe and is positioned in the vertical shaft, and the other end of the water lifting steel pipe is connected with the drainage main pipe.
The utility model has the advantages of as follows: one, when water drainage line when water pump outage operating mode, the utility model discloses a shaft carries out the tonifying qi to water drainage line, prevents that the water drainage line peak from appearing vacuum destruction and close nature water hammer even, solves the problem that influences drainage system safe operation such as vacuum destruction and close nature water hammer even effectively.
Secondly, the outlet of the water pumping steel pipe is arranged in the shaft, and the water level in the shaft is stable, so that the outlet pressure of the water pump water pumping pipe part is stable; simultaneously, because the protection of shaft and side slope exterior structure, surge when having avoided the dam flood discharge effectively directly patting the export of water pump lifting line portion, be favorable to the long-term steady operation of water pump.
③ the utility model provides a gravity flow part utilizes the shaft to the low reaches tail water about 25m drop free drainage that forms, and the pipeline diameter can suitably reduce, save material.
Fourthly, the utility model discloses benefit from the protection of shaft, drainage pipeline can stretch out along the construction branch tunnel that is more close to the position of dam and arranges to low reaches, and needn't excavate the pipeline corridor in addition again, saves construction cost by a wide margin, reduces construction period, reduces the construction degree of difficulty.
Fifth, the utility model discloses a pipeline is along journey loss less, is favorable to water pump energy saving and consumption reduction.
The pipeline of the side slope of the utility model adopts a pipe burying form, which can not form stains on the side slope and is beneficial to beautifying the appearance.
Drawings
Fig. 1 is an overall layout diagram of the present invention.
Fig. 2 is the schematic structural diagram of the room water pump equipment of the middle drainage pump of the present invention.
Fig. 3 is the utility model discloses well water pump lifting line portion's structural schematic.
Fig. 4 is a schematic structural view of the gravity-flow portion of the present invention.
In the figure: the device comprises a drainage pump house water pump equipment part 1, a seepage water collecting well 1.1, a submersible sewage pump 1.1.1, a long-axis deep water pump 1.2, an elastic seat seal gate valve 1.3, a check valve 1.4, a pressure gauge 1.5, an exhaust valve 1.6, a liquid level meter 1.7, a flow indicating annunciator 1.8, a water pump water lifting pipe part 2, a water lifting steel pipe 2.1, a flap valve 2.2, a gravity flow part 3, a vertical shaft 3.1, a pressure steel pipe 3.2, a dam side slope 3.3, a side slope 3.4, a seam crossing processing structure 3.5, a construction branch hole 4, a power station underground workshop auxiliary installation field 5, a drainage main pipe 5.1, a clean water main pipe 5.2 and a drainage pump house 5.3. The arrows in the figure indicate the direction of the water flow.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to FIGS. 1-4: a large underground hydropower station factory building leakage drainage system combined with a slope shaft comprises a drainage pump room water pump device part 1, a water pump water pumping pipeline part 2 and a gravity flow part 3; said water pumping line section 2 is located between said drain pump house water pumping equipment section 1 and said gravity flow section 3; the water pump lifting pipe part 2 is exposed in the construction branch hole 4;
the gravity flow flowing part 3 comprises a vertical shaft 3.1, a pressure steel pipe 3.2, a dam side slope 3.3, a side slope 3.4 and a seam crossing processing structure 3.5. (the overlock structure 3.5 is a conventional overlock method)
A vertical shaft 3.1 is arranged on one side of the dam side slope 3.3, and a side slope 3.4 is arranged on the other side of the vertical shaft 3.1; a pressure steel pipe 3.2 is arranged in the side slope 3.4, and one end of the pressure steel pipe 3.2 is communicated with the vertical shaft 3.1.
The penstock 3.2 is provided with a gap-passing processing structure 3.5 at the position of a dam gap passing through the side slope 3.4. (the overlock processing structure 3.5 is wrapped around the pressure steel pipe 3.2 to prevent the pressure steel pipe 3.2 from being damaged due to the settlement of the side slope 3.4.)
The pressure steel pipe 3.2 is protected by a seam crossing processing structure 3.5 when passing through a dam seam, (seam crossing processing is a conventional design, a pipeline only passes through the dam seam, and if the pipeline does not pass through the dam seam, the pipeline is not) the pressure steel pipe 3.2 is arranged along the trend of the side slope 3.4, and the outlet at the other end of the pressure steel pipe 3.2 is positioned below a tail water level.
The drainage pump room water pump equipment part 1 is positioned in an auxiliary installation field 5 of an underground power plant of the power station; and a drainage main pipe 5.1, a clean water main pipe 5.2 and a drainage pump room 5.3 are arranged in the power station underground workshop auxiliary installation field 5.
The draining pump room water pump equipment part 1 comprises a seepage collecting well 1.1, a long-axis deep water pump 1.2, an elastic seat seal gate valve 1.3, a check valve 1.4, a pressure gauge 1.5, an exhaust valve 1.6, a liquid level meter 1.7 and a flow indicator annunciator 1.8. (wherein: the seepage water collecting well 1.1 is used for collecting seepage water in the underground power plant, the long shaft deep water pump 1.2 is used for discharging the water collected in the seepage water collecting well 1.1, the elastic seat seal gate valve 1.3 is used for cutting off the water flow in the pipeline, the check valve 1.4 prevents the water flow in the pipeline from flowing backwards, the pressure gauge 1.5 is used for monitoring the pressure of the pipeline, the exhaust valve 1.6 is used for supplementing air at the outlet of the pipeline of the long shaft deep water pump 1.2 and preventing the vacuum damage at the outlet of the water pump of the long shaft deep water pump 1.2, the liquid level meter 1.7 is used for monitoring the water level in the seepage water collecting well 1.1, and the flow indicator 1.8 is used for monitoring the flow rate of
A liquid level meter 1.7 is arranged on one side inside the seepage water collecting well 1.1, a submersible sewage pump 1.1.1 is arranged at the bottom of the seepage water collecting well 1.1, and the submersible sewage pump 1.1.1 is communicated with tail water at the downstream through a pipeline;
three long-axis deep water pumps 1.2 are arranged in the seepage water collecting well 1.1, and each long-axis deep water pump 1.2 is connected with a drainage main pipe 5.1 arranged in the seepage water collecting well through a pipeline;
the cleaning water main pipe 5.2 is connected with a motor at the top of the long-shaft deep water pump 1.2 through a pipeline;
an exhaust valve 1.6, a pressure gauge 1.5, a flow indicating annunciator 1.8, an elastic seat seal gate valve 1.3 and a check valve 1.4 are sequentially arranged between the top outlet of each long-shaft deep water pump 1.2 and the drainage main pipe 5.1.
The water pumping pipeline part 2 of the water pump comprises a water pumping steel pipe 2.1 and a flap valve 2.2; one end of the water lifting steel pipe 2.1 is exposed along the construction branch hole 4 and extends into the vertical shaft 3.1, a flap valve 2.2 is arranged on an outlet of the water lifting steel pipe 2.1, the flap valve 2.2 is positioned in the vertical shaft 3.1, and the other end of the water lifting steel pipe 2.1 is connected with the drainage main pipe 5.1. (advantages are: when the drainage main pipe 5.1 is in the water pump power-off working condition, the drainage pipeline is supplied with air through the vertical shaft 3.1, the highest point of the drainage pipeline is prevented from generating vacuum damage or even closure water hammer, the problem that the vacuum damage or even closure water hammer and the like influence the safe operation of the drainage system is effectively solved, the outlet of the pumping steel pipe is arranged in the vertical shaft, the water level in the vertical shaft is stable, the outlet pressure of the pumping water pipe part 2 of the water pump is stable, meanwhile, because the vertical shaft 3.1 and the side slope 3.4 are protected by the external structure, the direct flapping of surge to the outlet of the pumping water pipe part 2 of the water pump during flood discharge of the dam is effectively avoided, and the long-term stable operation of the water pump is facilitated.)
For comparability, taking a power station as an example, the same effective volume of 150m in the water collecting well3Under the condition, the economic and technical comparison of the design of the utility model and the traditional design is shown in the following table 1:
TABLE 1 the economic and technical comparisons of the design of the utility model and the traditional design
Can see out by last table 1, adopt the utility model relates to a scheme, more traditional design scheme can save the engineering investment, reduce the energy consumption, still improved system safety and stability operating performance by a wide margin. (the table describes the advantages of the utility model (c))
Referring to FIG. 1: the utility model relates to a large-scale underground formula hydropower station factory building seepage drainage system who combines side slope shaft includes the three: the first part is a drainage pump house water pump device part 1, and the drainage pump house water pump device part 1 is arranged in an underground plant auxiliary installation field 5 of a power station; the second part is a water pump lifting pipe part 2, and pipelines in the water pump lifting pipe part 2 can be arranged by adopting open pipes and are arranged from a leakage water collecting well 1.1 to a vertical well 3.1 part (namely a water lifting steel pipe 2.1 in the figure); the third part is a gravity flow part 3, and pipelines of the gravity flow part are arranged by adopting buried pipes from an outlet along the vertical shaft 3.1 to the position below a downstream tail water level.
Referring to FIG. 2: the first part is a drainage pump house water pump equipment part 1, which comprises a seepage water collecting well 1.1, a submersible sewage pump 1.1, a long shaft deep water pump 1.2, an elastic seat seal gate valve 1.3, a check valve 1.4, a pressure gauge 1.5, an exhaust valve 1.6, a liquid level meter 1.7 and a flow indication annunciator 1.8, wherein when the water level in the seepage water collecting well 1.1 reaches a working pump starting water level (the working pump starting water level refers to a control water level for starting the working pump, and needs to be judged according to actual conditions on site), the long shaft deep well pump 1.2 starts to drain water; when the water level in the seepage water collecting well 1.1 reaches the starting water level of the standby pump (the starting water level of the standby pump is particularly the control water level for starting the standby pump, and needs to be judged according to the actual situation on site), the standby long-shaft deep well pump 1-2 starts to drain water; when the water level in the seepage water collecting well 1.1 is reduced to the pump stopping water level, the long-shaft deep well pump 1.2 stops working. (the utility model discloses the major axis deep-well pump 1.2 of figure 1 has three, and one of them is the working pump, and two other are the reserve pump)
Referring to FIG. 3: the second part is water pump lift head line portion 2, and drainage pipeline draws forth by the drainage main in the formula factory building seepage drainage pump house underground, along construction branch hole open laying, leads to the shaft 3.1 that sets up on the side slope of low reaches all the time, and the part on the pipeline is in proper order: a water pumping steel pipe 2-1 and a flap valve 2-2.
Referring to FIG. 4: the third part is a gravity self-flowing part 3, a buried pipe is arranged at the bottom of the other end of the vertical shaft 3.1, a pressure steel pipe 3.2 is downwards arranged along a side slope and is discharged below a downstream water level, and the parts on the pipeline are as follows: a vertical shaft 3-1 and a pressure steel pipe 3-2.
The system operation mechanism comprises: when the power station normally operates, the long-shaft deep well pump 1.2 normally works, the seepage drainage system drains seepage collected water in the seepage collected water well 1.1 into the vertical shaft 3.1 through the water pump lifting pipe part 2, and then the seepage collected water flows from the other end of the vertical shaft 3.1 through the pipeline gravity to rapidly drain into downstream tail water through the self-flowing part 3. The vertical shaft 3.1 plays a role in stabilizing the pressure of the drainage system and supplementing air.
When the power station is discharging flood, the downstream slope is subjected to the beating of the flood discharge surge, and the long-shaft deep-well pump 1.2 still works normally. Shaft 3.1 this moment play the effect of 2 exports of protection water pump lift line portion (the effect of protection flap door 2.2 promptly), prevent to surge and pat and flood backward flow the pipeline export for 2 export pressure relatively stable in water pump lift line portion, thereby guarantee the safety and stability operation of water pump, in order to ensure the safety of secret factory building.
When the water pump draws water and cuts off the power supply suddenly, rivers appear the vacuum in the 2.1 highest point department of water pumping pipeline, shaft 3.1 this moment play the effect of moisturizing, tonifying qi, prevent that water pumping pipeline 2.1 from being destroyed because of the too big vacuum, avoiding forming the water hammer of closure in the pipeline.
The above-mentioned parts not described in detail are prior art.
Claims (3)
1. A large underground hydropower station factory building leakage drainage system combined with a slope shaft comprises a drainage pump room water pump device part (1), a water pump water pumping pipeline part (2) and a gravity flow part (3); said water pumping line portion (2) being located between said drain pump house water pump equipment portion (1) and said gravity flow portion (3); the water pump lifting pipe part (2) is exposed in the construction branch hole (4);
the method is characterized in that: the gravity flow flowing part (3) comprises a vertical shaft (3.1), a pressure steel pipe (3.2), a dam side slope (3.3), a side slope (3.4) and a gap processing structure (3.5);
a vertical shaft (3.1) is arranged on one side of the dam side slope (3.3), and a side slope (3.4) is arranged on the other side of the vertical shaft (3.1); the side slope (3.4) is internally provided with a pressure steel pipe (3.2), one end of the pressure steel pipe (3.2) is communicated with the vertical shaft (3.1), the pressure steel pipe (3.2) is provided with a seam crossing treatment structure (3.5) at a dam seam passing through the side slope (3.4), the pressure steel pipe (3.2) is arranged along the direction of the side slope (3.4), and the outlet of the other end of the pressure steel pipe (3.2) is positioned below the tail water level.
2. The seepage drainage system of the large underground hydropower station building combined with the slope shaft, according to claim 1, is characterized in that: the drainage pump room water pump equipment part (1) is positioned in an auxiliary installation field (5) of an underground power plant of the power station; a drainage main pipe (5.1), a clean water main pipe (5.2) and a drainage pump room (5.3) are arranged in the power station underground workshop auxiliary installation field (5);
the drainage pump room water pump equipment part (1) comprises a leakage water collecting well (1.1), a long-axis deep water pump (1.2), an elastic seat seal gate valve (1.3), a check valve (1.4), a pressure gauge (1.5), an exhaust valve (1.6), a liquid level meter (1.7) and a flow indicating annunciator (1.8);
a liquid level meter (1.7) is arranged on one side inside the seepage water collecting well (1.1), a submersible sewage pump (1.1.1) is arranged at the bottom of the seepage water collecting well (1.1), and the submersible sewage pump (1.1.1) is communicated with downstream tail water through a pipeline; three long-axis deep water pumps (1.2) are arranged in the seepage water collecting well (1.1), and each long-axis deep water pump (1.2) is connected with a drainage main pipe (5.1) arranged inside through a pipeline; the cleaning water main pipe (5.2) is connected with a motor at the top of the long-shaft deep water pump (1.2) through a pipeline; an exhaust valve (1.6), a pressure gauge (1.5), a flow indicating annunciator (1.8), an elastic seat seal gate valve (1.3) and a check valve (1.4) are sequentially arranged between the top outlet of each long-shaft deep water pump (1.2) and the drainage main pipe (5.1).
3. The seepage drainage system of the large underground hydropower station building combined with the slope shaft as claimed in claim 2, wherein the seepage drainage system comprises: the water pump water lifting pipe part (2) comprises a water lifting steel pipe (2.1) and a flap valve (2.2); one end of the water pumping steel pipe (2.1) is exposed along the construction branch hole (4) and extends into the vertical shaft (3.1), a flap valve (2.2) is arranged at the outlet of the water pumping steel pipe (2.1), the flap valve (2.2) is positioned in the vertical shaft (3.1), and the other end of the water pumping steel pipe (2.1) is connected with the drainage main pipe (5.1).
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| CN201921669338.0U CN212336278U (en) | 2019-10-08 | 2019-10-08 | Large-scale underground type hydropower station factory building leakage drainage system combined with slope shaft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073619A (en) * | 2021-03-04 | 2021-07-06 | 中国电建集团华东勘测设计研究院有限公司 | Arrangement structure of horizontal tunnel and drainage gallery in pressure pipeline combined with TBM construction and construction method |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073619A (en) * | 2021-03-04 | 2021-07-06 | 中国电建集团华东勘测设计研究院有限公司 | Arrangement structure of horizontal tunnel and drainage gallery in pressure pipeline combined with TBM construction and construction method |
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