CN205576873U

CN205576873U - Fill water surge suppressor suitable for major diameter conduit valve

Info

Publication number: CN205576873U
Application number: CN201620060298.XU
Authority: CN
Inventors: 叶洁慧; 张永进; 张树存; 赖勇
Original assignee: Zhejiang Design Institute of Water Conservancy and Hydroelectric Power
Current assignee: Zhejiang Design Institute of Water Conservancy and Hydroelectric Power
Priority date: 2016-01-21
Filing date: 2016-01-21
Publication date: 2016-09-14
Anticipated expiration: 2026-01-21

Abstract

Fill water surge suppressor suitable for major diameter conduit valve, including bypass pipe, bypass valve and bypass branch pipe, on the conduit, the bypass pipe afterbody is equipped with fork connection bypass branch pipe before the maintain valve at the maintain valve upper reaches in the water inlet setting of bypass pipe, and the bypass pipe is equipped with the bypass valve in the upper reaches at minute fork section, and the head -end and the bypass pipe of bypass branch pipe are connected, and conduit after pipeline center line elevation behind the maintain valve is established the delivery port to insert the maintain valve is held in the low reaches of bypass branch pipe. This novel practical one tub of two offset dissipation structure that divides that adopts, both reducible bypass valve quantity realized one -man operation, simplified the management, also the reducible offset time difference, guaranteed the effect that hedges.

Description

It is applicable to the water-filling surge suppressor of major diameter aqueduct valve

Technical field

This utility model belongs to aqueduct water-filling surge suppression technique field, is specifically related to one and is applicable to major diameter aqueduct valve Water-filling surge suppressor.

Background technology

Long-distance diversion tunnel is when crossing over the position such as cheuch, rivers water system, frequently with pipe laying, immersed tube or the pattern wearing river tunnel, For ease of the maintenance that discharges water, general maintenance lock or the service valve of all setting on the aqueduct of the section of falling rainbow upstream and downstream, wherein maintenance lock can be used Opening operating mode in small guide vane, but during due to gate dash, before lock, water body will be along the aboveground liter of lock, for avoiding current to overflow, lock top is examined Repair platform height and be higher than peak level before lock, and long distance water diversion engineering is often difficult to reach this requirement, therefore, distance Diversion tunnel particularly mountain area tunnel uses service valve to control maintenance mostly.

Service valve operating condition closes quiet opening for dynamic, and the ripe electric device operational torque of current domestic production is generally no greater than 100 Ten thousand N.m, after service valve diameter is more than 3m, reach certain head difference after and before the valve, and valve hydrostatic is opened and is necessary for using Hydraulic-driven or the bypass valve of minor diameter is set carries out water-filling concora crush.

The available driving force of fluid pressure drive device is greater than electric device, but exist investment compared with high, energy consumption big, structure is complicated, The troublesome shortcoming of Operation Administration and Maintenance, especially for the underground maintenance valve chamber being arranged in massif, hydraulic means takes up an area big, makes Become underground cavern excavation area to strengthen, and air-conditioning requirement is the highest.

Pipeline is washed away relatively big by conventional minor diameter bypass pipe surge suppressor, is easily destroyed the corrosion-inhibiting coating of steel pipe inner wall, symmetrical When two small diameter pipelines are set, two set valves need to be set, for reducing the unlatching time difference that liquidates, often need two people to operate simultaneously, Also being difficult to Complete Synchronization during unlatching, management more bothers.

Chinese patent CN203741796U discloses a kind of water-filling flat pressing structure for the long diversion tunnel gate, at diversion tunnel Lateral symmetry arranges the diversion bypass flow channel in " 7 " font, and downstream sets cavern's stiling basin and carries out the structure of energy dissipating, and this structure can play Disspation through hydraudic jimp and the effect of part colliding energy dissipation, it is adaptable to concrete-lined tunnel structure, but for using steel lining or steel pipe as load The pipeline configuration that body carries out water delivery is inapplicable.

Utility model content

The purpose of this utility model is to improve the deficiencies in the prior art, it is provided that a kind of be applicable to filling of major diameter aqueduct valve Horizontal pressure device, by arranging a pipe shunting colliding energy dissipation structure, on the one hand, bypass valve quantity can be reduced, single the most operable Streamlining management；On the other hand, the time difference that liquidates can be reduced, it is to avoid the time difference that liquidates causes Pipeline damage, it is ensured that liquidate effect.

This utility model be the technical scheme is that the water-filling surge suppressor being applicable to major diameter aqueduct valve, includes Bypass pipe, bypass valve and bypass arm, the water inlet of described bypass pipe is defeated before being arranged on the service valve of aqueduct service valve upstream The bottom of waterpipe, bypass pipe afterbody is provided with fork connecting bypass arm, and bypass pipe is provided with bypass valve at the Upstream section of bifurcation mouth； Bypass pipe typically uses stainless steel tube or seamless steel pipe, and caliber determines according to water-filling concora crush Time Calculation, and thickness of steel pipe is according to being held The maximum internal pressure head being subject to determines；Bypass valve is arranged on bypass pipe, it is considered to crosses valve fluidised form, before bypass valve valve, is provided with one after valve The flat segments of measured length, the bypass pipe diameter of typically no less than 1 times；Bypass arm be typically provided two, use stainless steel tube or Seamless steel pipe, caliber is identical, is arranged symmetrically with relative to aqueduct centrage, and the upstream extremity of bypass arm is connected with bypass pipe, The downstream of bypass arm sets out the mouth of a river after service valve and accesses aqueduct after service valve at aqueduct centrage elevation.Bypass The water inlet of pipe, the outlet of bypass arm generally use the pattern of welding to be connected with aqueduct.

The subsurface valve that described water-filling surge suppressor both can be disposed at tunnel steel lining is indoor, by maintenance access tunnel turnover management, it is possible to Exposed penstock is directly arranged, if floor control room is managed.

It is turned off when described bypass valve is properly functioning at aqueduct and overhauls, only after aqueduct overhauls, service valve valve Need after front valve to open during water flowing concora crush.

Described bypass arm also can connect multiple two grades of bypass arms again in downstream, and two grades of bypass arms diverge in " foretelling " shape, and it goes out After valve, the centrage elevation of pipeline is in " non-" font array distribution at the mouth of a river, and outlet quantity increases, and is conducive to improving further Liquidate effect, but investment can increased.

The described total conveyance capacity of bypass arm should be less than the conveyance capacity of bypass pipe, i.e. caliber is necessarily less than bypass pipe, two bypass When arm is arranged, 0.7 times of the bypass general desirable bypass pipe caliber of branch diameter；When bypass arm arranges two grades of bypass arms, Two grades of bypass total conveyance capacities of arm of this bypass arm also require that the conveyance capacity less than this bypass arm.

The beneficial effects of the utility model are: solve the water-filling concora crush problem of major diameter aqueduct valve, use a pipe double Divide colliding energy dissipation structure, both can reduce bypass valve quantity, it is achieved single the most operable, thus streamlining management, it is possible to reduce and liquidate The time difference, it is ensured that liquidate effect.

Accompanying drawing explanation

Fig. 1 is floor map of the present utility model；

Fig. 2 is the A A sectional view of Fig. 1；

Fig. 3 is the B B sectional view of Fig. 1；

Fig. 4 is the C C sectional view of Fig. 1；

Fig. 5 is the profile that this utility model is arranged on exposed penstock；

Fig. 6 is the floor map that this utility model arranges multiple two grades of bypass arms.

In figure: 1-water-filling surge suppressor；11-bypass pipe；12-bypass valve；13-bypasses arm；14-bis-grades bypasses arm；2-is defeated Waterpipe；Aqueduct before 21-service valve；Aqueduct after 22-service valve；3-aqueduct service valve；4-underground valve chamber；5- Transition；6-upstream tunnel；7-overhauls access tunnel；8-exposed penstock；9-floor control room.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment, this utility model is described in further detail.

As shown in Figure 1 to 4, this utility model is applicable to the water-filling surge suppressor 1 of major diameter aqueduct valve, includes side Siphunculus 11, bypass valve 12 and bypass arm 13；Consider that bypass valve 12 is installed, run easy to operate and take into account pipe before service valve The erosion and deposition in road 21, the water inlet of bypass pipe 1 is arranged on the end of aqueduct 21 before the service valve of aqueduct service valve 3 upstream Portion, the afterbody of bypass pipe 11 is provided with fork connecting bypass arm 13, and bypass pipe 11 sets bypass valve 12 at the Upstream section of bifurcation mouth, Bypass pipe 11 uses stainless steel tube or seamless steel pipe, caliber determines according to water-filling concora crush Time Calculation, and thickness of steel pipe is according to bearing Maximum internal pressure head determines；Considered valve fluidised form, bypass pipe 11 before the valve of bypass valve 12, be equipped with length after valve and be not less than The flat segments of 1 times of bypass pipe 11 diameter, bypass arm 13 is provided with two, uses stainless steel tube or seamless steel pipe, and caliber is identical, Being arranged symmetrically with relative to the centrage of aqueduct 2, the upstream extremity of bypass arm 13 is connected with bypass pipe 11, holds downstream After service valve, aqueduct 22 centrage elevation sets out the mouth of a river and accesses aqueduct 22 after service valve.The water inlet of bypass pipe 11, The outlet of bypass arm 13 uses the pattern of welding to be connected with aqueduct 2.Water delivery before the service valve of aqueduct 2 Upstream section Pipeline 21 is connected with upstream tunnel 6 by transition 5.

Described water-filling surge suppressor 1 both can be overhauled as it is shown in figure 1, be arranged in the underground valve chamber 4 of tunnel steel lining by turnover Access tunnel 7 is managed, it is possible to as it is shown in figure 5, be directly arranged on exposed penstock 8, if floor control room 9 is managed.

It is turned off when described bypass valve 12 is properly functioning at aqueduct 2 and overhauls, only after aqueduct 2 overhauls, inspection Before repairing valve 3 valve, need after valve to open during water flowing concora crush.

As shown in Figure 6, the bypass arm 13 of the present embodiment also can connect multiple two grades of arms 14, two grades of bypass arms again in downstream 14 in " foretelling " shape diverge, outlet after service valve the centrage elevation of aqueduct 22 in " non-" font array distribution, Outlet quantity increases, and is conducive to improving further the effect that liquidates, but investment can increased.

The described total conveyance capacity of bypass arm 13 should be less than the conveyance capacity of bypass pipe 11, and i.e. the caliber of bypass arm 13 must be little In the caliber of bypass pipe 11, when two bypass arms 13 are arranged symmetrically with, bypass arm 13 caliber takes the 0.7 of bypass pipe 11 caliber Times；When bypass arm 13 arranges two grades of bypass arms 14, total conveyance capacity of two grades of bypass arms 14 also requires that less than by this The conveyance capacity of logical arm 13.

Claims

1. it is applicable to the water-filling surge suppressor of major diameter aqueduct valve, it is characterized in that: it includes bypass pipe, bypass valve and bypass arm, the water inlet of described bypass pipe is arranged on the bottom of aqueduct before the service valve of aqueduct Upstream section, bypass pipe afterbody is provided with fork connecting bypass arm, bypass pipe is provided with bypass valve at the Upstream section of bifurcation mouth, the upstream extremity of described bypass arm is connected with bypass pipe, and the downstream of bypass arm sets out the mouth of a river after service valve and accesses aqueduct after service valve at aqueduct centrage elevation.

The water-filling surge suppressor being applicable to major diameter aqueduct valve the most according to claim 1, it is characterised in that: described bypass pipe is equipped with the length flat segments not less than 1 times of bypass pipe diameter before the valve of described bypass valve, after valve.

The water-filling surge suppressor being applicable to major diameter aqueduct valve the most according to claim 1, it is characterised in that: described bypass arm is provided with two, and caliber is identical, is arranged symmetrically with relative to aqueduct centrage.

The water-filling surge suppressor being applicable to major diameter aqueduct valve flat segments door the most according to claim 1, it is characterized in that: described bypass arm is connected to multiple two grades of bypass arms in downstream, two grades bypass arms diverge in " foretelling " shape, its outlet after service valve the centrage elevation of aqueduct in " non-" font array distribution.

5. according to the water-filling surge suppressor being applicable to major diameter aqueduct valve flat segments door described in claim 1 or 3, it is characterised in that: the described total conveyance capacity of bypass arm is less than the conveyance capacity of bypass pipe.

The water-filling surge suppressor being applicable to major diameter aqueduct valve flat segments door the most according to claim 4, it is characterised in that: described two grades of bypass total conveyance capacities of arm are less than the conveyance capacity of described bypass arm.

The water-filling surge suppressor being applicable to major diameter aqueduct valve flat segments door the most according to claim 1, it is characterised in that: it is arranged in the subsurface valve indoor of tunnel steel lining or is directly arranged on exposed penstock.