CN109778791A - The anti-jetting lintel of down-the-hole type upstream sealing emergency overhaul gate - Google Patents
The anti-jetting lintel of down-the-hole type upstream sealing emergency overhaul gate Download PDFInfo
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- CN109778791A CN109778791A CN201910192039.0A CN201910192039A CN109778791A CN 109778791 A CN109778791 A CN 109778791A CN 201910192039 A CN201910192039 A CN 201910192039A CN 109778791 A CN109778791 A CN 109778791A
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Abstract
The present invention relates to hydraulic and hydroelectric engineering technical fields, more particularly to a kind of anti-jetting lintel of down-the-hole type upstream sealing emergency overhaul gate.Lintel of the present invention is fixed on upstream breastwork bottom end；The lintel includes lintel panel, anti-jetting plate, sealing seat board；Lintel panel is stretched out in the lintel panel and anti-jetting plate welding at an acute angle, anti-jetting plate one end part；The anti-jetting plate stretching lintel panel partially protrudes into gate slot；Or the anti-jetting plate is welded on the lower part of lintel panel；The sealing seat board is welded on lintel lower panels.The present invention can reduce emergency overhaul gate and close door body vibration during door, reduce the fluctuating pressure intensity of gate slot and mesoporous runner near zone, improve mesoporous runner fluidised form, structure novel, construction are compact, manufacture is easy for installation, at low cost.
Description
Technical field
The present invention relates to hydraulic and hydroelectric engineering technical fields, more particularly to a kind of down-the-hole type upstream sealing emergency overhaul gate
Anti- jetting lintel.
Background technique
Large hydropower station dam flood-discharge mesoporous (or deep hole, see Fig. 1) usually stops in mesoporous import setting down-the-hole type upstream
Water emergency overhaul gate, is operated by Transformation Plan of Gantry Crane.Arch gate is set in outlet, is operated by hydraulic headstock gear.Usually
In the case of, arch gate is operated by hydraulic headstock gear opens flood discharge, is closed after the completion of flood discharge by hydraulic headstock gear.Such as
There is accident during opening or closing in fruit Segmental service gate, and cannot normally open and close, then needs import emergency overhaul gate on dam
Dynamic water closes door so that water flow is truncated under the operation of roof door machine, creates conditions for maintenance arch gate and hydraulic headstock gear.Accident
Maintenance door is closed during door, and gate slot tonifying Qi is insufficient particularly problematic, be easy to cause radial gate vibration violent, this is to a certain degree
On affect the operational safety of emergency overhaul gate.
Summary of the invention
The purpose of the present invention is in view of the above-mentioned problems existing in the prior art, provide a kind of down-the-hole type upstream sealing accident inspection
Repair the anti-jetting lintel of door.The present invention can reduce emergency overhaul gate and close door body vibration during door, improve mesoporous runner fluidised form,
It manufactures easy for installation.
As shown in Fig. 2, be arranged in the emergency overhaul gate of upstream side for sealing, hydraulics test the result shows that, down-the-hole type
Upstream sealing emergency overhaul gate enters during aperture closes entirely to gate from gate root edge, in mesoporous runner a large amount of high-pressure water bodies from
It more moves into one's husband's household upon marriage at gap (width about 100mm) between emergency overhaul gate upstream face plate and upstream breastwork and spreads and splash after pushing up, blocking
Air supply passage between emergency overhaul gate downstream panel and gate slot, causing the accident, it is insufficient to overhaul passage downstream tonifying Qi.Due in
Runner tonifying Qi during closing door in hole is insufficient, and emergency overhaul gate downstream canal top area will form extremely unstable negative pressure cavity
Area's B area, nearby fluctuating pressure intensity is big for negative pressure cavity zone；And since jet stream water volume flow rate is high, in emergency overhaul gate upstream
Nearby panels will appear instantaneous negative pressuren zone a-quadrant, which occurs with eddy with horizontal axis.Close the jet stream of water body and punching during door
The negative pressure condition to be formed is hit, the dynamic water for having seriously affected door body, the operational safety of gate slot and emergency overhaul gate closes door.
As shown in figure 3, to solve the problems, such as that gate slot tonifying Qi is insufficient during emergency overhaul gate closes door, existing engineering is in practice
The snorkel of a 2~3m of diameter is arranged in emergency overhaul gate gate slot downstream 2m or so top position, makes discharge orifice runner top
Portion's B area has unobstructed ventilation channel, so as to improve the fluidised form of discharge orifice and the pressure characteristic of gate slot areas adjacent.But
It is that, there are still certain gap between emergency overhaul gate and upstream breastwork, leading to close water body during door still can more move into one's husband's household upon marriage top
It flows to downstream and flow rate of water flow is higher, it is negative that such emergency overhaul gate upstream face plate partial region a-quadrant still will appear instantaneous extreme value
Pressure, and downstream panel and root edge are sealed by water curtain at this time, can not be ventilated, and extreme value negative pressure is held time longer, influence accident inspection
Door is repaired smoothly to close.
A kind of anti-jetting lintel of down-the-hole type upstream sealing emergency overhaul gate, it is characterised in that: lintel is mounted on upstream breastwork
Bottom end；The lintel includes lintel panel, anti-jetting plate, sealing seat board；The lintel panel and anti-jetting plate welding at an acute angle,
Lintel panel is stretched out in anti-jetting plate one end part；The anti-jetting plate stretching lintel panel partially protrudes into gate slot；Or institute
State the lower part that anti-jetting plate is welded on lintel panel；The sealing seat board is welded on lintel lower panels.
Further, the panel beam vertical is welded on lintel panel；There is the gusset will by the welding of three faces
Lintel panel, anti-jetting plate, panel crossbeam are connected；Or the gusset is welded by three faces by lintel panel, bottom plate, panel
Crossbeam is connected.
Further, anti-jetting stiffening plate is set between the lintel panel and anti-jetting plate.
Further, between the anti-jetting plate top and emergency overhaul gate between slot reservation 2cm or so.
Sealing emergency overhaul gate anti-jetting lintel in down-the-hole type upstream provided by the present invention, anti-jetting plate and lintel panel weld
It is connected in one, anti-jetting plate bears high speed water jet impact load as upstream breastwork corner protector, and also serves as anti-jetting structure and prevent water
Body directive door top, the configuration of the present invention is simple, good integrity.The beneficial effects of the present invention are:
1, lintel panel of the invention is mainly used for installing sealing seat board, and enters slot and accident inspection as emergency overhaul gate
Repair a guide frame for top sealing dropping place；Anti- jetting plate closes during door the high-pressure water body prevented in runner for emergency overhaul gate
Gap between lintel panel and emergency overhaul gate upstream face plate is sprayed upwards, and bears high-velocity flow suffered by lintel structure
Impact load；Anti- jetting stiffening plate welding Chong Die with anti-jetting plate, for reinforcing anti-jetting plate structural strength；Sealing seat board conduct
Emergency overhaul gate top water stop rubber fulcrum bearing fits closely realization watertight with top water stop rubber after emergency overhaul gate closing；Panel
Crossbeam and gusset and anti-jetting plate, lintel panel weld, and lintel structure consolidation is integrated, strong for enhancing lintel overall structure
Degree, rigidity；
2, it adds the anti-jetting lintel and can reduce emergency overhaul gate and close door body vibration during door, reduce gate slot
And the fluctuating pressure intensity of runner near zone, improve mesoporous runner fluidised form, effect is better than adding snorkel；
3, the anti-jetting lintel installation region is only upstream breastwork bottom end local location, leads directly to dam compared to snorkel
The fitting limit on top, manufacture, mounting process are simple；
4, the anti-jetting lintel is few using material, and economic cost is low compared to snorkel.
Detailed description of the invention
Fig. 1 is dam flood-discharge mesoporous cross-section diagram, and horizontal arrow direction is flow direction.
Fig. 2 is not set venthole down-the-hole type upstream sealing emergency overhaul gate to close a process schematic, and horizontal arrow direction is
Flow direction, vertical arrows direction are tonifying Qi direction.
Fig. 3 is that emergency overhaul gate closes a process schematic under the conditions of adding snorkel, and horizontal arrow direction is flow direction, vertically
Arrow direction is tonifying Qi direction.
Fig. 4 is to add emergency overhaul gate under structural condition of the invention to close a process schematic, and horizontal arrow direction is stream
To vertical arrows direction is tonifying Qi direction.
Fig. 5 a is the structural representation sectional view of the embodiment of the present invention one.
Fig. 5 b is the structural representation sectional view of the embodiment of the present invention two.
Fig. 6 is structural representation front view of the invention.
In figure: 1- emergency overhaul gate, 2- Transformation Plan of Gantry Crane, 3- arch gate, 4- hydraulic headstock gear, 5- gate slot, on 6-
Trip breastwork, 7- air supply passage, 8- mesoporous runner, 9- snorkel, the anti-jetting lintel of 10-, 1.1- emergency overhaul gate top sealing,
10.1- lintel panel, 10.2- sealing seat board, the anti-jetting stiffening plate of 10.3-, the anti-jetting plate of 10.4-, 10.5- panel crossbeam,
10.6- gusset, 10.7- bottom plate.
Specific embodiment
The performance that the invention will now be described in detail with reference to the accompanying drawings, but they and do not constitute a limitation of the invention, only
It is for example, while by illustrating that advantages of the present invention will become clearer and be readily appreciated that.
The embodiment of the present invention one is referring to shown in Fig. 5 a and Fig. 6, a kind of anti-jetting of down-the-hole type upstream sealing emergency overhaul gate
Lintel, including lintel panel 10.1, sealing seat board 10.2, anti-jetting stiffening plate 10.3, anti-jetting plate 10.4, panel crossbeam 10.5
With gusset 10.6；The lintel panel 10.1 and the welding at an acute angle of anti-jetting stiffening plate 10.3, and welded using apical grafting form；Institute
The placement Chong Die with anti-jetting plate 10.4 of anti-jetting stiffening plate 10.3 is stated to be welded as a whole；The panel crossbeam 10.5 is arranged vertically on
10.1 back side of lintel panel, panel crossbeam 10.5 and 10.1 apical grafting of lintel panel weld；The gusset 10.6 is welded by three faces
Lintel panel 10.1, anti-jetting plate 10.4, panel crossbeam 10.5 are consolidated integrally；The patch of sealing seat board 10.2 is welded in lintel
On panel 10.1.
One structure of the present embodiment can also be preferably that the lintel panel 10.1 is welded with anti-jetting plate 10.4 apical grafting at an acute angle
It is connected together.
The lintel panel 10.1 and primary structure of the anti-jetting plate 10.4 as lintel 10, the lintel panel 10.1 are simultaneous
Make the guide frame that emergency overhaul gate 1 enters 1.1 dropping place of gate slot 5 and emergency overhaul gate top sealing.The anti-jetting plate 10.4 1
End part stretches out lintel panel 10.1, protrudes into gate slot 5, and extension stretches out lintel as anti-jetting structure, anti-jetting plate 10.4
The length of 10.1 part of panel is determined according to the gap between upstream breastwork 6 and emergency overhaul gate 1.
The sealing seat board 10.2 is mounted on 10.1 surface of lintel panel, and 10.2 installation site of sealing seat board is examined according to accident
Top 1.1 position of sealing is repaired to determine.
The setting of the anti-jetting stiffening plate 10.3 is mainly used for increasing the structural strength of anti-jetting plate 10.4, prevent its
High-velocity flow washes away, the structure under high water head effect is destroyed, and anti-jetting stiffening plate 10.3 can be required according to specific loading condition,
Determine whether to be arranged.When being not provided with anti-jetting stiffening plate 10.3, lintel panel 10.1 and anti-jetting plate 10.4 are at an angle
Apical grafting welds together, and anti-jetting plate 10.4 is welded into 10.1 apical grafting of lintel panel is similar to asymmetric T-shape structure.
The panel crossbeam 10.5 is arranged vertically on 10.1 back side of lintel panel, panel crossbeam 10.5 and lintel panel 10.1
Apical grafting welding, panel crossbeam 10.5 are mainly used for enhancing structural strength, the rigidity of lintel panel 10.1, arrange spacing and structure ruler
The very little uplift pressure born according to lintel panel 10.1 determines.
The embodiment of the present invention two is welded on the sealing seat on lintel panel 10.1 referring to Fig. 5 b, the anti-jetting plate 10.4
10.2 lower part of plate, the lintel panel 10.1 and the welding at an acute angle of bottom plate 10.7, the panel crossbeam 10.5 are arranged vertically on door
10.1 back side of lintel panel, the gusset 10.6 are connected lintel panel 10.1, bottom plate 10.7, panel crossbeam 10.5 by the welding of three faces
Integrally.
The present invention is welding structural element, other connection methods do not constitute a limitation of the invention simultaneously.
Referring to shown in Fig. 4, anti-jetting lintel 10 of the invention requires to install according to the arrangement of emergency overhaul gate top sealing 1.1
6 bottom end of breastwork in upstream；The panel 10.1 of the lintel 10 is towards 5 side of gate slot, 10.1 top of lintel panel and upstream breastwork 6
Fist stage concrete is connected, and lower surface installs sealing seat board 10.2, and 10.1 surface direction of lintel panel is opened with emergency overhaul gate 1
It is consistent to close traffic direction；Anti- 10.4 bottom surface of jetting plate and 8 import top surface of runner of the lintel 10 are mutually neat, before anti-jetting plate 10.4
It holds and stretches out lintel panel 10.1, in the gate slot 5 for partially protruding into down-the-hole type upstream sealing emergency overhaul gate 1, protrude into the portion in gate slot 5
It is allocated as anti-jetting structure.
1 root edge of down-the-hole type upstream sealing emergency overhaul gate initially enters in mesoporous runner 8 until emergency overhaul gate 1
It closes and completes in whole process, between anti-10.4 top of jetting plate of the lintel 10 of the invention and 1 upstream face plate of emergency overhaul gate
Gap control always in 2cm, lesser gap can block a large amount of water bodys from 1 upstream face plate of emergency overhaul gate and upstream breastwork
6 project, it is ensured that the air supply passage 7 between emergency overhaul gate downstream panel and gate slot 5 is unimpeded, substantially eliminates emergency overhaul gate upstream
There is emergency overhaul gate oscillation phenomenon caused by extreme value negative pressure in faceplate part region, is effectively improved 8 fluidised form of mesoporous runner, reduces door
The fluctuating pressure intensity of slot 5 and mesoporous runner 8.
The present invention can generate significant economic effect.It is (normal with down-the-hole type upstream sealing emergency overhaul gate water blocking head 80m
The difference of water storage level and bottom sill elevation), ventilate pipe diameter 2m, 10 flood discharge mesoporous apertures (in existing engineering, the power station Wu Dongde cloth
6 hole flood discharge mesoporous are set, Three Gorges Key Water Project arranges 22 hole flood discharge mesoporous.Therefore by most engineerings compromise values, 10 holes, aperture ruler are taken
Very little 6m × 8m is calculated) calculate for:
1) anti-jetting lintel of the present invention is used, it is about 0.5t that single hole, which increases project amount, manufacture mounting cost per ton
About 1.5 ten thousand yuan, 10 holes add up to expense to be 10 × 0.5 × 1.5=7.5 ten thousand；
2) snorkel is used, ventilation length of tube takes 100m, and single hole project amount is about 60t, and manufacture mounting cost per ton is about
1.5 ten thousand yuan, 10 holes add up to expense to be 10 × 60 × 1.5=900 ten thousand.Using breather pipe structure direct economy cost about using anti-
26 times of jetting lintel structure, and installation period length, the installation difficulty of breather pipe structure are big, and indirect economy cost is also above peace
Fill anti-jetting lintel structure.
The part that the present invention does not illustrate is the prior art or the part that those skilled in the art should know.With
The upper preferred embodiments only of the invention, are not intended to limit the invention, are done all within the spirits and principles of the present invention
Any modification, equivalent substitution, improvement and etc., should all be included in the protection scope of the present invention.
Claims (4)
1. the anti-jetting lintel of down-the-hole type upstream sealing emergency overhaul gate, it is characterised in that: lintel (10) is mounted on upstream breastwork (6)
Bottom end；The lintel (10) includes lintel panel (10.1), anti-jetting plate (10.4), sealing seat board (10.2)；The lintel face
Lintel panel (10.1) are stretched out in plate (10.1) and the welding at an acute angle of anti-jetting plate (10.4), anti-jetting plate (10.4) one end part；
Anti- jetting plate (10.4) stretching lintel panel (10.1) partially protrudes into gate slot (5)；Or the anti-jetting plate
(10.4) it is welded on the lower part of lintel panel (10.1)；The sealing seat board (10.2) is welded on lintel panel (10.1) lower part.
2. sealing emergency overhaul gate anti-jetting lintel in down-the-hole type upstream according to claim 1, it is characterised in that: have described
Panel crossbeam (10.5) is vertically welded on lintel panel (10.1)；There are the gusset (10.6) to weld by three faces by lintel face
Plate (10.1), anti-jetting plate (10.4), panel crossbeam (10.5) are connected；Or the gusset (10.6) will by the welding of three faces
Lintel panel (10.1), bottom plate (10.7), panel crossbeam (10.5) are connected.
3. sealing emergency overhaul gate anti-jetting lintel in down-the-hole type upstream according to claim 1 or 2, it is characterised in that: institute
It states and anti-jetting stiffening plate (10.3) is set between lintel panel (10.1) and anti-jetting plate (10.4).
4. sealing emergency overhaul gate anti-jetting lintel in down-the-hole type upstream according to claim 3, it is characterised in that: described anti-
Slot reservation 2cm or so between jetting plate (10.4) top and emergency overhaul gate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192039.0A CN109778791A (en) | 2019-03-14 | 2019-03-14 | The anti-jetting lintel of down-the-hole type upstream sealing emergency overhaul gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192039.0A CN109778791A (en) | 2019-03-14 | 2019-03-14 | The anti-jetting lintel of down-the-hole type upstream sealing emergency overhaul gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109778791A true CN109778791A (en) | 2019-05-21 |
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ID=66489223
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910192039.0A Pending CN109778791A (en) | 2019-03-14 | 2019-03-14 | The anti-jetting lintel of down-the-hole type upstream sealing emergency overhaul gate |
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| CN (1) | CN109778791A (en) |
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|---|---|---|---|---|
| CN2440058Y (en) * | 1999-05-11 | 2001-07-25 | 刘刊 | Lintel water-stopping structure of arc-shaped sluice gate |
| CN201056682Y (en) * | 2007-11-05 | 2008-05-07 | 中国水电顾问集团昆明勘测设计研究院 | Water sealing device of high water head radial gate |
| CN203307780U (en) * | 2013-06-18 | 2013-11-27 | 中国水电顾问集团成都勘测设计研究院 | Gate top lintel |
| CN103790141A (en) * | 2012-11-02 | 2014-05-14 | 长江三峡通航管理局 | Miter gate bottom waterstop anti-jamming device |
| JP2014114550A (en) * | 2012-12-06 | 2014-06-26 | Hokoku Kogyo Co Ltd | Dam's discharge gate |
| CN105089018A (en) * | 2015-06-05 | 2015-11-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Jet-proof water sealing method and device for plane gate |
| CN107401146A (en) * | 2017-07-28 | 2017-11-28 | 贵州省水利水电勘测设计研究院 | A kind of twice formula water sealing structure for deep-outiet radial gate top |
| CN207619941U (en) * | 2017-12-05 | 2018-07-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Sluice gate down-the-hole plane accident gate structure |
| CN210031702U (en) * | 2019-03-14 | 2020-02-07 | 长江勘测规划设计研究有限责任公司 | Down-the-hole type upstream water stop accident access door anti-water injection door head |
-
2019
- 2019-03-14 CN CN201910192039.0A patent/CN109778791A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2440058Y (en) * | 1999-05-11 | 2001-07-25 | 刘刊 | Lintel water-stopping structure of arc-shaped sluice gate |
| CN201056682Y (en) * | 2007-11-05 | 2008-05-07 | 中国水电顾问集团昆明勘测设计研究院 | Water sealing device of high water head radial gate |
| CN103790141A (en) * | 2012-11-02 | 2014-05-14 | 长江三峡通航管理局 | Miter gate bottom waterstop anti-jamming device |
| JP2014114550A (en) * | 2012-12-06 | 2014-06-26 | Hokoku Kogyo Co Ltd | Dam's discharge gate |
| CN203307780U (en) * | 2013-06-18 | 2013-11-27 | 中国水电顾问集团成都勘测设计研究院 | Gate top lintel |
| CN105089018A (en) * | 2015-06-05 | 2015-11-25 | 中国电建集团贵阳勘测设计研究院有限公司 | Jet-proof water sealing method and device for plane gate |
| CN107401146A (en) * | 2017-07-28 | 2017-11-28 | 贵州省水利水电勘测设计研究院 | A kind of twice formula water sealing structure for deep-outiet radial gate top |
| CN207619941U (en) * | 2017-12-05 | 2018-07-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Sluice gate down-the-hole plane accident gate structure |
| CN210031702U (en) * | 2019-03-14 | 2020-02-07 | 长江勘测规划设计研究有限责任公司 | Down-the-hole type upstream water stop accident access door anti-water injection door head |
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