CN105274972A - Air floatation type dam gate - Google Patents
Air floatation type dam gate Download PDFInfo
- Publication number
- CN105274972A CN105274972A CN201510582394.0A CN201510582394A CN105274972A CN 105274972 A CN105274972 A CN 105274972A CN 201510582394 A CN201510582394 A CN 201510582394A CN 105274972 A CN105274972 A CN 105274972A
- Authority
- CN
- China
- Prior art keywords
- gate
- lock
- open
- fixed pulley
- relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses an air floatation type dam gate. The air floatation type dam gate is characterized by comprising an upper fixed pulley and a lower fixed pulley; one end of a first mooring rope is connected with the top edge of the gate, and the other end of the first mooring rope winds across the upper fixed pulley to be connected to a pulley support of a movable pulley; one end of a second mooring rope is fixed to the bottom of a dam body, and the other end of the second mooring rope sequentially winds across the movable pulley and the lower fixed pulley to be connected with a gate starting airbag; one end of a mooring rope on the left side and one end of a mooring rope on the right are connected to the corresponding sides of the gate respectively, and the other ends wind across the fixed pulleys to be connected with a gate closing airbag; the air floatation type dam gate is provided with a flood discharge magnetic float position switch, a water storage magnetic float position switch, an electromagnetic switch and an air pump; the water level is detected through the switches, then air inflation and deflation control is achieved over the gate starting airbag and the gate closing airbag, and then starting and closing control over the gate is achieved. The air floatation type dam gate is suitable for the areas with inconvenient traffics and low power supply assurance rate, the management difficulty is reduced, dam safety is ensured, and water resource waste is avoided.
Description
Technical field
The present invention relates to dam sluice gate, is more particularly a kind of air-flotation type dam sluice gate.
Background technology
At present, the gate opening/closing mode that China's medium and small reservoirs is conventional has winding type, screw and fluid pressure type, is all take forceful electric power as power.But some small reservoirs are positioned at mountain area or remote districts mostly, have inconvenient traffic, fraction of powering is low, mountain torrents took place frequently and increased management difficulty especially rainy season, if consequence of can not opening a sluice gate and drawing out some water in time is very serious, What is more threatens to dam safety, for this reason, some medium and small reservoirs adopt and control formula design of spillway without lock, but this form has water resource waste phenomenon to a certain degree.
Summary of the invention
The present invention is the weak point for avoiding existing for above-mentioned prior art, provides a kind of air-flotation type dam sluice gate, to the area that the fraction that can be suitable for having inconvenient traffic and power is low, reduces management difficulty, ensures Dam safety, avoid water resource waste.
The present invention is that technical solution problem adopts following technical scheme:
The design feature of air-flotation type dam sluice gate of the present invention is provided with:
One top fixed pulley, its pulley yoke is fixedly installed on dam slope, is in the top of flood discharge water level, is positioned on the extended line of vertical center line of gate;
One bottom fixed pulley, its pulley yoke is fixedly installed on the bottom of dam body, is positioned on the extended line of vertical center line of gate;
One gate, it can slide up and down in strobe track, and described strobe track is positioned at sluice gate both sides, to drop on the bottom of strobe track under gate for closing lock, is upwards promoted to above sluice gate as opening a sluice gate along strobe track with gate;
One end of first hawser is connected with the top margin of gate, and the other end is walked around top fixed pulley and is connected on the pulley bracket of movable pulley;
One end of second hawser is fixed on bottom dam body, the other end successively by movable pulley and bottom fixed pulley with open lock air bag and be connected;
Bottom dam body, being positioned at the below of gate, being fixedly installed the gate base plate for supporting gate, arrange left side fixed pulley in the left side of gate base plate, and have hawser one end, left side to be connected to the left side of gate, the other end is walked around left side fixed pulley and is closed lock air bag and be connected; Arrange right side fixed pulley on the right side of gate base plate, and have dextral cable one end to be connected to the right side of gate, the other end is walked around right side fixed pulley and is closed lock air bag and be connected; Described left side fixed pulley and right side fixed pulley are for symmetrical centre with the extended line of the vertical center line of gate;
One flood discharge magnetic float position switch, it is fixedly installed on dam slope, is in the flood discharge height of water level place of setting, its only when water level reaches the flood discharge height of water level set as closed;
One retaining magnetic float position switch, it is fixedly installed on dam slope, is in the normal pool level At The Height of setting, its only when water level reaches the normal pool level height set as closed;
One electromagnetic switch, it is fixedly installed on the top margin of gate, touches with strobe track, and when gate opening, electromagnetic switch disconnects; When gate is closed completely, electromagnetic switch is closed;
One inflator pump, its output gas circuit one tunnel leads to by opening lock charge valve and opening brake tube road and open lock airbags successively, and another road leads to by closing lock charge valve and closing brake tube road and close lock airbags successively; Described open on brake tube road arrange open lock outlet valve, described close on brake tube road arrange close lock outlet valve.
The design feature of air-flotation type dam sluice gate of the present invention is also: described in open lock air bag and close lock air bag and be umbrella shape air bag.
The design feature of air-flotation type dam sluice gate of the present invention is also: arrange air-flotation type dam sluice gate control circuit, and described control circuit is for working power with battery GB;
The constant open contact j opening lock relay is arranged in series in the electric power loop of inflator pump
28-1, at the described constant open contact j opening lock relay
28-1on be arranged in parallel the constant open contact j closing lock relay
29-1;
The constant open contact j closing lock outlet valve He open lock relay is arranged in series in the electric power loop opening lock charge valve
28-2; In the electric power loop closing lock charge valve, be arranged in series and open lock outlet valve and close lock relay normally open contact j
29-2;
Arrange two-way switch SA, the fixed contact c of two-way switch SA is connected with battery anode, and two-way switch SA selects to connect between manual contact a and automated contact b;
Manual contact a mono-tunnel is through manually opening lock switch S B
31with the coil J opening lock relay
28connect battery negative terminal formation Non-follow control and open lock electric power loop; Another road of manual contact a is through manually closing lock switch S B
32with the coil J closing lock relay
29connect battery negative terminal formation Non-follow control and close lock electric power loop;
The constant open contact j of automated contact b mono-tunnel first relay
30-1, flood discharge magnetic float position switch and open the coil J of lock relay
28connect power supply negative terminal formation and automatically open lock electric power loop; The constant close contact j of another road first relay of automated contact b
30-2, retaining magnetic float position switch and close the coil J of lock relay
29form and automatically open lock electric power loop; The coil J of the first relay
30be connected in the electric power loop of electromagnetic switch.
The present invention realizes the air-flotation type automatic open and close of dam sluice gate according to water level situation, greatly can reduce management difficulty, and be particularly suited for mountain area and the unmanned realizing medium and small reservoirs from far-off regions, compared with the prior art, beneficial effect of the present invention is embodied in:
1, for unattended medium and small reservoirs: the present invention is particularly useful for unattended medium and small hydraulic engineering, particularly be positioned at Small Reservoir that is remote, mountain area, can avoiding may causing dam break and people's lives and properties massive losses not in time because controlling flood discharge, improving the fraction of hydraulic engineering safe operation.
2, for all kinds of gate opening/closing hydraulic structure: except reservoir, other kinds sluice, culvert etc. all can run needs according to design water level etc., rationally apply the technology of the present invention.
3, for gate opening/closing emergency set: the similar reservoirs such as Foziling Reservoirs in 1969 overflow dam accident and illustrate, emergency gate opening and closing device is equipped with extremely important.According to the present invention, can further improve the safety guarantee rate of big-and-middle-sized hydraulic engineering, time crucial, play acting on very much.
4, for dynamic water closed shutter equipment: for only not closing the gate of lock by deadweight, adopt the inventive method, can ensure that gate can be closed completely in dynamic water, avoiding gate can not safety shutdown in time and the serious consequence that causes.
Accompanying drawing explanation
Figure 1A is the main TV structure schematic diagram of the present invention;
Figure 1B is side-looking structural representation of the present invention;
Fig. 2 A, Fig. 2 B and Fig. 2 C are different operating view of the present invention;
Fig. 3 is control principle of the present invention signal;
Number in the figure: 1 top fixed pulley, 2 movable pulley, 3 bottom fixed pulleys, fixed pulley on the left of in the of 4, fixed pulley on the right side of in the of 5, 6 open lock air bag, 7 close lock air bag, 8 gate base plates, 9 gates, 10 electromagnetic switch, 11 strobe tracks, 12 flood discharge magnetic float position switches, 13 retaining magnetic float position switches, 14 first hawsers, 15 second hawsers, 16 dextral cable, hawser on the left of in the of 17, 18 inflator pumps, 19 close lock outlet valve, 20 close lock charge valve, 21 open lock charge valve, 22 open lock outlet valve, 23 open brake tube road, 24 close brake tube road, 25 dam slopes, 26 dam bodys, 27 sluice culverts.
Detailed description of the invention
See Figure 1A and Fig. 2 B, in the present embodiment, the form of structure of air-flotation type dam sluice gate is:
Top fixed pulley 1, its pulley yoke is fixedly installed on dam slope 25, is in the top of flood discharge water level, is positioned on the extended line of vertical center line of gate 9.Bottom fixed pulley 3, its pulley yoke is fixedly installed on the bottom of dam body 26, is positioned on the extended line of vertical center line of gate 9.
Gate 9 can slide up and down in strobe track 11, strobe track 11 is positioned at sluice gate both sides, and drop on the bottom of strobe track 11 for 9 times for closing lock with gate, sluice culvert 27 is closed, upwards be promoted to for opening a sluice gate above sluice gate with gate 9 along strobe track, sluice culvert 27 is unlocked.
One end of first hawser 14 is connected with the top margin of gate 9, and the other end is walked around top fixed pulley 1 and is connected on the pulley bracket of movable pulley 2; One end of second hawser 15 is fixed on bottom dam body, the other end successively by movable pulley 2 and bottom fixed pulley 3 with open lock air bag 6 and be connected.
In the bottom of dam body 26, the below being positioned at gate 9, be fixedly installed the gate base plate 8 for supporting gate 9, arrange left side fixed pulley 4 in the left side of gate base plate 8, and have hawser 17 one end, left side to be connected to the left side of gate 9, the other end is walked around left side fixed pulley 4 and is closed lock air bag 7 and be connected; Arrange right side fixed pulley 5 on the right side of gate base plate 8, and have dextral cable 16 one end to be connected to the right side of gate 9, the other end is walked around right side fixed pulley 5 and is closed lock air bag 7 and be connected; Left side fixed pulley 4 is for symmetrical centre with the extended line of the vertical center line of gate 9 with right side fixed pulley 5.
Flood discharge magnetic float position switch 12 is fixedly installed on dam slope 25, is in the flood discharge height of water level place of setting, its only when water level reaches the flood discharge height of water level set as closed; Flood discharge magnetic float position switch 12 be uprightly and just placement, when water level does not reach flood discharge water level, magnetic float can not fall by buoyancy, switch disconnects, when water level reach flood discharge height of water level flood flood discharge magnetic float position switch time, magnetic float float, switch close; After water level decreasing, magnetic float declines, and switch disconnects.
Retaining magnetic float position switch 13 is fixedly installed on dam slope 25, is in the normal pool level At The Height of setting, its only when water level reaches the normal pool level height set as closed; Retaining magnetic float position switch 13 is upright and upside down, and when water level is more than water storage level, magnetic float is submerged in water, magnetic float can float, and switch disconnects, time below water level decreasing to magnetic float, magnetic float does not have buoyant effect to fall, and switch closes.
Electromagnetic switch 10 is fixedly installed on the top margin of gate 9, touches with strobe track 11, and when gate 9 is opened, electromagnetic switch 10 disconnects; When gate 9 is closed completely, electromagnetic switch 10 is closed;
As shown in Fig. 2 A, Fig. 2 B and Fig. 2 C, output gas circuit one tunnel of inflator pump 18 is successively by opening lock charge valve 21 and opening brake tube road 23 and open lock air bag 6 and be connected, and another road is successively by closing lock charge valve 20 and closing brake tube road 24 and close lock air bag 7 and be connected; Open on brake tube road 23 arrange open lock outlet valve 22, close on brake tube road 24 arrange close lock outlet valve 19.Open lock air bag 6 and close lock air bag 7 and be umbrella shape air bag.
As shown in Figure 3, arrange air-flotation type dam sluice gate control circuit in the present embodiment, control circuit is for working power with battery GB.
The constant open contact j opening lock relay is arranged in series in the electric power loop of inflator pump 18
28-1, at the described constant open contact j opening lock relay
28-1on be arranged in parallel the constant open contact j closing lock relay
29-1;
The constant open contact j closing lock outlet valve 19 and open lock relay is arranged in series in the electric power loop opening lock charge valve 21
28-2; In the electric power loop closing lock charge valve 20, be arranged in series and open lock outlet valve 22 and close lock relay normally open contact j
29-2;
Arrange two-way switch SA, the fixed contact c of two-way switch SA is connected with battery anode, and two-way switch SA selects to connect between manual contact a and automated contact b;
Manual contact a mono-tunnel is through manually opening lock switch S B
31with the coil J opening lock relay
28connect battery negative terminal formation Non-follow control and open lock electric power loop; Another road of manual contact a is through manually closing lock switch S B
32with the coil J closing lock relay
29connect battery negative terminal formation Non-follow control and close lock electric power loop;
The constant open contact j of automated contact b mono-tunnel first relay
30-1, flood discharge magnetic float position switch 12 and open the coil J of lock relay
28connect power supply negative terminal formation and automatically open lock electric power loop; The constant close contact j of another road first relay of automated contact b
30-2, retaining magnetic float position switch 13 and close the coil J of lock relay
29form and automatically open lock electric power loop; The coil J of the first relay
30be connected in the electric power loop of electromagnetic switch 10.
Operating principle:
When needing automatic open and close gate, the fixed contact c of two-way switch SA is connected with automated contact b.
The operating principle of automatic starting gate: when reservoir level reaches flood discharge height of water level, inflator pump 18 start working and along opening brake tube road 23, open lock charge valve 21 and inflate to opening lock air bag 6, close lock air bag 7 by hydraulic pressure effect simultaneously, close gas in lock air bag 7 along closing brake tube road 24, close lock outlet valve 19 and be outwards vented voluntarily.Due to the use of movable pulley 2, make to open the half that buoyancy suffered by lock air bag 6 is greater than Qi Menli, can starting gate 9.When gate 9 upwardly opens, the electromagnetic switch 10 being positioned at gate 9 top disconnects, and inflator pump 18 quits work, and opens lock charge valve 21, closes lock outlet valve 19 and all close, open lock action and complete.
The operating principle of automatic closed shutter: when reservoir water level descending is to normal reserve-water-level height, inflator pump 18 start working and along closing brake tube road 24, close lock charge valve 20 and inflate to closing lock air bag 7, open lock air bag 6 by hydraulic pressure effect simultaneously, open gas in lock air bag 6 along opening brake tube road 23, open lock outlet valve 22 and be outwards vented voluntarily.When close buoyancy suffered by lock air bag 7 be greater than close power time, pull gate 9 to close.When gate 9 is closed completely, the electromagnetic switch 10 being positioned at gate 9 top closes, and inflator pump 18 quits work, and closes lock charge valve 20, opens lock outlet valve 22 and all close, close lock action and complete.
When needing manual opening-closing gate, the fixed contact c of two-way switch SA is connected with manual contact a.Lock switch S B is manually opened when needs starting gate
31closed, inflator pump 18 is started working to opening lock air bag 6 and is inflated, and closes lock air bag 7 by hydraulic pressure effect automatic vent simultaneously, opens after lock action completes, manually opens lock switch S B
31disconnect, inflator pump 18 quits work; Lock switch S B is manually closed when needs closed shutter
32closed, inflator pump 18 is started working to closing lock air bag 7 and is inflated, and opens lock air bag 6 by hydraulic pressure effect automatic vent simultaneously, closes after lock action completes, manually closes lock switch S B
32disconnect, inflator pump 18 quits work.
Claims (3)
1. an air-flotation type dam sluice gate, is characterized in that being provided with:
One top fixed pulley (1), its pulley yoke is fixedly installed on dam slope (25), is in the top of flood discharge water level, is positioned on the extended line of vertical center line of gate (9);
One bottom fixed pulley (3), its pulley yoke is fixedly installed on the bottom of dam body (26), is positioned on the extended line of the vertical center line of gate (9);
One gate (9), it can slide up and down in strobe track (11), described strobe track (11) is positioned at sluice gate both sides, to drop on the bottom of strobe track (11) under gate (9) for closing lock, be upwards promoted to above sluice gate as opening a sluice gate along strobe track with gate (9);
One end of first hawser (14) is connected with the top margin of gate (9), and the other end is walked around top fixed pulley (1) and is connected on the pulley bracket of movable pulley (2);
One end of second hawser (15) is fixed on bottom dam body, the other end successively by movable pulley (2) and bottom fixed pulley (3) with open lock air bag (6) and be connected;
Bottom dam body, be positioned at the below of gate (9), be fixedly installed the gate base plate (8) for supporting gate (9), left side fixed pulley (4) is set in the left side of gate base plate (8), and having hawser (17) one end, left side to be connected to the left side of gate (9), the other end is walked around left side fixed pulley (4) and is closed lock air bag (7) and be connected; Right side fixed pulley (5) is set on the right side of gate base plate (8), and having dextral cable (16) one end to be connected to the right side of gate (9), the other end is walked around right side fixed pulley (5) and is closed lock air bag (7) and be connected; Described left side fixed pulley (4) and right side fixed pulley (5) are for symmetrical centre with the extended line of the vertical center line of gate (9);
One flood discharge magnetic float position switch (12), it is fixedly installed on dam slope (25), is in the flood discharge height of water level place of setting, its only when water level reaches the flood discharge height of water level set as closed;
One retaining magnetic float position switch (13), it is fixedly installed on dam slope (25), is in the normal pool level At The Height of setting, its only when water level reaches the normal pool level height set as closed;
One electromagnetic switch (10), it is fixedly installed on the top margin of gate (9), touches with strobe track (11), and when gate (9) is opened, electromagnetic switch (10) disconnects; When gate (9) is closed completely, electromagnetic switch (10) is closed;
One inflator pump (18), it exports gas circuit one tunnel successively by opening lock charge valve (21) and opening brake tube road (23) and open lock air bag (6) and be connected, and another road is successively by closing lock charge valve (20) and closing brake tube road (24) and close lock air bag (7) and be connected; Open the upper setting in brake tube road (23) open lock outlet valve (22) described, close the upper setting in brake tube road (24) close lock outlet valve (19) described.
2. air-flotation type dam sluice gate according to claim 1, is characterized in that: described in open lock air bag (6) and close lock air bag (7) and be umbrella shape air bag.
3. air-flotation type dam sluice gate according to claim 1, is characterized in that: arrange air-flotation type dam sluice gate control circuit, and described control circuit is for working power with battery GB;
The constant open contact j opening lock relay is arranged in series in the electric power loop of inflator pump (18)
28-1, at the described constant open contact j opening lock relay
28-1on be arranged in parallel the constant open contact j closing lock relay
29-1;
The constant open contact j closing lock outlet valve (19) and open lock relay is arranged in series in the electric power loop opening lock charge valve (21)
28-2; In the electric power loop closing lock charge valve (20), be arranged in series and open lock outlet valve (22) and close lock relay normally open contact j
29-2;
Arrange two-way switch SA, the fixed contact c of two-way switch SA is connected with battery anode, and two-way switch SA selects to connect between manual contact a and automated contact b;
Manual contact a mono-tunnel is through manually opening lock switch S B
31with the coil J opening lock relay
28connect battery negative terminal formation Non-follow control and open lock electric power loop; Another road of manual contact a is through manually closing lock switch S B
32with the coil J closing lock relay
29connect battery negative terminal formation Non-follow control and close lock electric power loop;
The constant open contact j of automated contact b mono-tunnel first relay
30-1, flood discharge magnetic float position switch (12) and open the coil J of lock relay
28connect power supply negative terminal formation and automatically open lock electric power loop; The constant close contact j of another road first relay of automated contact b
30-2, retaining magnetic float position switch (13) and close the coil J of lock relay
29form and automatically open lock electric power loop; The coil J of the first relay
30be connected in the electric power loop of electromagnetic switch (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510582394.0A CN105274972A (en) | 2015-09-11 | 2015-09-11 | Air floatation type dam gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510582394.0A CN105274972A (en) | 2015-09-11 | 2015-09-11 | Air floatation type dam gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105274972A true CN105274972A (en) | 2016-01-27 |
Family
ID=55144732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510582394.0A Pending CN105274972A (en) | 2015-09-11 | 2015-09-11 | Air floatation type dam gate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105274972A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780739A (en) * | 2016-03-08 | 2016-07-20 | 华北水利水电大学 | Channel gate |
| CN109778793A (en) * | 2019-03-18 | 2019-05-21 | 黄河勘测规划设计研究院有限公司 | Pressurising open-close type plane gate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100826292B1 (en) * | 2007-03-08 | 2008-04-30 | 광 훈 전 | Upset apparatus for upset flood gate |
| CN203960817U (en) * | 2014-07-28 | 2014-11-26 | 杨木超 | Small and medium-sized pumping station flap valve electromagnetic buffer device |
| CN104563066A (en) * | 2014-12-18 | 2015-04-29 | 合肥工业大学 | Water stop body for plane gate of inflating type water gate and installing method thereof |
| CN104831693A (en) * | 2015-05-20 | 2015-08-12 | 河海大学 | Floating type intelligent gate opening and closing device |
-
2015
- 2015-09-11 CN CN201510582394.0A patent/CN105274972A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100826292B1 (en) * | 2007-03-08 | 2008-04-30 | 광 훈 전 | Upset apparatus for upset flood gate |
| CN203960817U (en) * | 2014-07-28 | 2014-11-26 | 杨木超 | Small and medium-sized pumping station flap valve electromagnetic buffer device |
| CN104563066A (en) * | 2014-12-18 | 2015-04-29 | 合肥工业大学 | Water stop body for plane gate of inflating type water gate and installing method thereof |
| CN104831693A (en) * | 2015-05-20 | 2015-08-12 | 河海大学 | Floating type intelligent gate opening and closing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780739A (en) * | 2016-03-08 | 2016-07-20 | 华北水利水电大学 | Channel gate |
| CN109778793A (en) * | 2019-03-18 | 2019-05-21 | 黄河勘测规划设计研究院有限公司 | Pressurising open-close type plane gate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102852162B (en) | Water discharging manhole cover capable of automatically hoisting | |
| JP4388494B2 (en) | Automatic tide door equipment at Rikusu | |
| CN202706186U (en) | Automatic drainage anti-backflow sewer cover | |
| CN211368620U (en) | Water sluicegate that small-size reservoir was used | |
| CN105274972A (en) | Air floatation type dam gate | |
| CN104831693A (en) | Floating type intelligent gate opening and closing device | |
| CN101886375B (en) | Steel rolling cylinder gate | |
| CN104141283A (en) | Automatic waterlogging prevention device used in transformer substation | |
| CN113202036A (en) | Prevent ponding warning type highway culvert drainage equipment | |
| CN102561273B (en) | Self-adjusting water intake device | |
| CN107366347A (en) | A kind of underpass flood reverse-filling drainage system | |
| CN217203918U (en) | Upturning type hydraulic integrated pump gate | |
| CN211717512U (en) | River course velocity of flow, water level automatic monitoring device | |
| CN216517712U (en) | Automatic lifting type flood-proof baffle plate for subway tunnel portal | |
| KR20110080231A (en) | Apparatus for auto descending of water gate | |
| CN202809556U (en) | Flood prevention apparatus | |
| CN204023484U (en) | In a kind of Substation Station, use prevention waterlogging device automatically | |
| CN203729271U (en) | Rigid slab automatic water blocking machine | |
| KR101985540B1 (en) | Up/down building structure | |
| CN207436020U (en) | It is a kind of to automatically control water gate headstock gear using photovoltaic power generation plate | |
| CN207143866U (en) | A kind of dam, which discharges water, uses sluice | |
| CN203559401U (en) | Mechanical full-automatic waterlogging and drought control valve | |
| CN216339785U (en) | Dredging device for hydraulic engineering | |
| CN219343015U (en) | High-order flood storage body | |
| CN104131538A (en) | Automatic flood protection and drainage irrigation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160127 |
|
| WD01 | Invention patent application deemed withdrawn after publication |