Door back desilting structure for pressure tunnel overhaul access door
A technology for dredging the back of the door and entering the door, which is applied in water conservancy projects, hydroelectric power stations, hydroelectric power generation, etc., can solve problems such as sediment deposition, and achieve low cost effects
Active Publication Date: 2015-07-15
怀远县翰邦科技咨询有限公司
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a dredging structure at the back of the entrance door for maintenance of a pressurized tunnel with a simple structure and low cost in view of the above existing problems, so as to solve the problem of sediment deposition behind the maintenance entrance door
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[0014] Such as figure 1 , figure 2 As shown, this embodiment is a dredging structure at the back of the maintenance access door of a pressurized tunnel. The pressurized tunnel 1 is connected to the construction branch tunnel 2, and a side-opening maintenance entry door 3 is installed at the exit of the construction branch tunnel 2.
[0015] In this example, a sand collection tank 6 is provided on the bottom plate of the pressurized tunnel 1 behind the maintenance access door 3, and the sand collection tank 6 covers the range of the maintenance access door switch stroke. Sand collecting tank 6 bottoms are made up of two obtuse-angled slopes (see figure 2 ), compared with the rectangular pool, this structure is easier to concentrate sediment, and the sediment in it can be washed away more conveniently. A stainless steel support 5 is laid above the sand collection tank 6, and the steel support 5 is covered with a stainless steel mesh 4, which does not affect the normal operat...
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The invention relates to a door back desilting structure for a pressure tunnel overhaul access door. The invention aims at providing the door back desilting structure for pressure tunnel overhaul access door with the advantages of simple structure and lower cost for solving the problem of sediment accumulation behind the overhaul access door. The door back desilting structure has the technical scheme that a pressure tunnel of the door back desilting structure for the pressure tunnel overhaul access door is connected with a construction adit, and a side opening type overhaul access door is arranged at a construction adit outlet part. The door back desilting structure is characterized in that a sand collecting pool is arranged on a pressure tunnel bottom plate which is arranged behind the overhaul access door and in the opening and closing stroke range of the overhaul access door, a water storage cavity is arranged in the overhaul access door, a plurality of water discharge pipes are arranged at the back side of the overhaul access door and face the sand collecting pool, and the water storage cavity and the water discharge pipes are communicated through a water discharge valve arranged at the side, near the construction adit, of the overhaul access door.
Description
technical field [0001] The invention relates to a dredging structure at the back of an entry door for maintenance of a pressurized tunnel. Applicable to water conservancy and hydropower projects. Background technique [0002] In water conservancy and hydropower projects, in order to ensure the convenience of maintenance of the pressurized diversion tunnel during the operation of the power station, a certain number of maintenance access doors are generally set up. However, because the water flow behind the maintenance access door is in the "dead water zone", the flow velocity is very small, which causes a large amount of suspended sediment carried by the upstream of the pressurized water diversion tunnel to settle and deposit behind the access door, blocking the access to the maintenance access door. open. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a dredging structure at the back of the entrance door for m...
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Login to View More IPC IPC(8): E02B9/06
CPCE02B9/06Y02E10/20
Inventor 苏琳
Owner 怀远县翰邦科技咨询有限公司